yamllint version 0.7.0

Sets are like mappings, that do not contain values. Example:

    set:
      ? key one
      ? key two
      ? [non, scalar, key]

.gitignore

@@ -1,2 +1,3 @@
 __pycache__
 *.py[cod]
+/docs/_build

.travis.yml

@@ -1,7 +1,6 @@
 ---
 language: python
 python:
-  - 2.6
   - 2.7
   - 3.3
   - 3.4

README.md

@@ -1,6 +0,0 @@
-# yamllint
-
-A linter for YAML files.
-
-[![Build Status](https://travis-ci.org/adrienverge/yamllint.svg?branch=master)](https://travis-ci.org/adrienverge/yamllint)
-[![Coverage Status](https://coveralls.io/repos/adrienverge/yamllint/badge.svg?branch=master&service=github)](https://coveralls.io/github/adrienverge/yamllint?branch=master)

README.rst

@@ -0,0 +1,65 @@
+yamllint
+========
+
+A linter for YAML files.
+
+yamllint does not only check for syntax validity, but for common cosmetic
+conventions such as lines length, trailing spaces, indentation, etc.
+
+.. image::
+   https://travis-ci.org/adrienverge/yamllint.svg?branch=master
+   :target: https://travis-ci.org/adrienverge/yamllint
+   :alt: CI tests status
+.. image::
+   https://coveralls.io/repos/github/adrienverge/yamllint/badge.svg?branch=master
+   :target: https://coveralls.io/github/adrienverge/yamllint?branch=master
+   :alt: Code coverage status
+.. image:: https://readthedocs.org/projects/yamllint/badge/?version=latest
+   :target: http://yamllint.readthedocs.org/en/latest/?badge=latest
+   :alt: Documentation status
+
+Written in Python (compatible with Python 2 & 3).
+
+Documentation
+-------------
+
+http://yamllint.readthedocs.org/
+
+Short overview
+--------------
+
+Screenshot
+^^^^^^^^^^
+
+.. image:: docs/screenshot.png
+   :alt: yamllint screenshot
+
+Installation
+^^^^^^^^^^^^
+
+.. code:: bash
+
+ sudo pip install yamllint
+
+Usage
+^^^^^
+
+.. code:: bash
+
+ # Lint one or more files
+ yamllint my_file.yml my_other_file.yaml ...
+
+.. code:: bash
+
+ # Lint all YAML files in a directory
+ yamllint .
+
+.. code:: bash
+
+ # Use a custom lint configuration
+ yamllint -c ~/myconfig file.yml
+
+.. code:: bash
+
+ # Output a parsable format (for syntax checking in editors like Vim, emacs...)
+ yamllint -f parsable file.yml

docs/Makefile

@@ -0,0 +1,177 @@
+# Makefile for Sphinx documentation
+#
+
+# You can set these variables from the command line.
+SPHINXOPTS    =
+SPHINXBUILD   = sphinx-build
+PAPER         =
+BUILDDIR      = _build
+
+# User-friendly check for sphinx-build
+ifeq ($(shell which $(SPHINXBUILD) >/dev/null 2>&1; echo $$?), 1)
+$(error The '$(SPHINXBUILD)' command was not found. Make sure you have Sphinx installed, then set the SPHINXBUILD environment variable to point to the full path of the '$(SPHINXBUILD)' executable. Alternatively you can add the directory with the executable to your PATH. If you don't have Sphinx installed, grab it from http://sphinx-doc.org/)
+endif
+
+# Internal variables.
+PAPEROPT_a4     = -D latex_paper_size=a4
+PAPEROPT_letter = -D latex_paper_size=letter
+ALLSPHINXOPTS   = -d $(BUILDDIR)/doctrees $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) .
+# the i18n builder cannot share the environment and doctrees with the others
+I18NSPHINXOPTS  = $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) .
+
+.PHONY: help clean html dirhtml singlehtml pickle json htmlhelp qthelp devhelp epub latex latexpdf text man changes linkcheck doctest gettext
+
+help:
+	@echo "Please use \`make <target>' where <target> is one of"
+	@echo "  html       to make standalone HTML files"
+	@echo "  dirhtml    to make HTML files named index.html in directories"
+	@echo "  singlehtml to make a single large HTML file"
+	@echo "  pickle     to make pickle files"
+	@echo "  json       to make JSON files"
+	@echo "  htmlhelp   to make HTML files and a HTML help project"
+	@echo "  qthelp     to make HTML files and a qthelp project"
+	@echo "  devhelp    to make HTML files and a Devhelp project"
+	@echo "  epub       to make an epub"
+	@echo "  latex      to make LaTeX files, you can set PAPER=a4 or PAPER=letter"
+	@echo "  latexpdf   to make LaTeX files and run them through pdflatex"
+	@echo "  latexpdfja to make LaTeX files and run them through platex/dvipdfmx"
+	@echo "  text       to make text files"
+	@echo "  man        to make manual pages"
+	@echo "  texinfo    to make Texinfo files"
+	@echo "  info       to make Texinfo files and run them through makeinfo"
+	@echo "  gettext    to make PO message catalogs"
+	@echo "  changes    to make an overview of all changed/added/deprecated items"
+	@echo "  xml        to make Docutils-native XML files"
+	@echo "  pseudoxml  to make pseudoxml-XML files for display purposes"
+	@echo "  linkcheck  to check all external links for integrity"
+	@echo "  doctest    to run all doctests embedded in the documentation (if enabled)"
+
+clean:
+	rm -rf $(BUILDDIR)/*
+
+html:
+	$(SPHINXBUILD) -b html $(ALLSPHINXOPTS) $(BUILDDIR)/html
+	@echo
+	@echo "Build finished. The HTML pages are in $(BUILDDIR)/html."
+
+dirhtml:
+	$(SPHINXBUILD) -b dirhtml $(ALLSPHINXOPTS) $(BUILDDIR)/dirhtml
+	@echo
+	@echo "Build finished. The HTML pages are in $(BUILDDIR)/dirhtml."
+
+singlehtml:
+	$(SPHINXBUILD) -b singlehtml $(ALLSPHINXOPTS) $(BUILDDIR)/singlehtml
+	@echo
+	@echo "Build finished. The HTML page is in $(BUILDDIR)/singlehtml."
+
+pickle:
+	$(SPHINXBUILD) -b pickle $(ALLSPHINXOPTS) $(BUILDDIR)/pickle
+	@echo
+	@echo "Build finished; now you can process the pickle files."
+
+json:
+	$(SPHINXBUILD) -b json $(ALLSPHINXOPTS) $(BUILDDIR)/json
+	@echo
+	@echo "Build finished; now you can process the JSON files."
+
+htmlhelp:
+	$(SPHINXBUILD) -b htmlhelp $(ALLSPHINXOPTS) $(BUILDDIR)/htmlhelp
+	@echo
+	@echo "Build finished; now you can run HTML Help Workshop with the" \
+	      ".hhp project file in $(BUILDDIR)/htmlhelp."
+
+qthelp:
+	$(SPHINXBUILD) -b qthelp $(ALLSPHINXOPTS) $(BUILDDIR)/qthelp
+	@echo
+	@echo "Build finished; now you can run "qcollectiongenerator" with the" \
+	      ".qhcp project file in $(BUILDDIR)/qthelp, like this:"
+	@echo "# qcollectiongenerator $(BUILDDIR)/qthelp/yamllint.qhcp"
+	@echo "To view the help file:"
+	@echo "# assistant -collectionFile $(BUILDDIR)/qthelp/yamllint.qhc"
+
+devhelp:
+	$(SPHINXBUILD) -b devhelp $(ALLSPHINXOPTS) $(BUILDDIR)/devhelp
+	@echo
+	@echo "Build finished."
+	@echo "To view the help file:"
+	@echo "# mkdir -p $$HOME/.local/share/devhelp/yamllint"
+	@echo "# ln -s $(BUILDDIR)/devhelp $$HOME/.local/share/devhelp/yamllint"
+	@echo "# devhelp"
+
+epub:
+	$(SPHINXBUILD) -b epub $(ALLSPHINXOPTS) $(BUILDDIR)/epub
+	@echo
+	@echo "Build finished. The epub file is in $(BUILDDIR)/epub."
+
+latex:
+	$(SPHINXBUILD) -b latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
+	@echo
+	@echo "Build finished; the LaTeX files are in $(BUILDDIR)/latex."
+	@echo "Run \`make' in that directory to run these through (pdf)latex" \
+	      "(use \`make latexpdf' here to do that automatically)."
+
+latexpdf:
+	$(SPHINXBUILD) -b latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
+	@echo "Running LaTeX files through pdflatex..."
+	$(MAKE) -C $(BUILDDIR)/latex all-pdf
+	@echo "pdflatex finished; the PDF files are in $(BUILDDIR)/latex."
+
+latexpdfja:
+	$(SPHINXBUILD) -b latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
+	@echo "Running LaTeX files through platex and dvipdfmx..."
+	$(MAKE) -C $(BUILDDIR)/latex all-pdf-ja
+	@echo "pdflatex finished; the PDF files are in $(BUILDDIR)/latex."
+
+text:
+	$(SPHINXBUILD) -b text $(ALLSPHINXOPTS) $(BUILDDIR)/text
+	@echo
+	@echo "Build finished. The text files are in $(BUILDDIR)/text."
+
+man:
+	$(SPHINXBUILD) -b man $(ALLSPHINXOPTS) $(BUILDDIR)/man
+	@echo
+	@echo "Build finished. The manual pages are in $(BUILDDIR)/man."
+
+texinfo:
+	$(SPHINXBUILD) -b texinfo $(ALLSPHINXOPTS) $(BUILDDIR)/texinfo
+	@echo
+	@echo "Build finished. The Texinfo files are in $(BUILDDIR)/texinfo."
+	@echo "Run \`make' in that directory to run these through makeinfo" \
+	      "(use \`make info' here to do that automatically)."
+
+info:
+	$(SPHINXBUILD) -b texinfo $(ALLSPHINXOPTS) $(BUILDDIR)/texinfo
+	@echo "Running Texinfo files through makeinfo..."
+	make -C $(BUILDDIR)/texinfo info
+	@echo "makeinfo finished; the Info files are in $(BUILDDIR)/texinfo."
+
+gettext:
+	$(SPHINXBUILD) -b gettext $(I18NSPHINXOPTS) $(BUILDDIR)/locale
+	@echo
+	@echo "Build finished. The message catalogs are in $(BUILDDIR)/locale."
+
+changes:
+	$(SPHINXBUILD) -b changes $(ALLSPHINXOPTS) $(BUILDDIR)/changes
+	@echo
+	@echo "The overview file is in $(BUILDDIR)/changes."
+
+linkcheck:
+	$(SPHINXBUILD) -b linkcheck $(ALLSPHINXOPTS) $(BUILDDIR)/linkcheck
+	@echo
+	@echo "Link check complete; look for any errors in the above output " \
+	      "or in $(BUILDDIR)/linkcheck/output.txt."
+
+doctest:
+	$(SPHINXBUILD) -b doctest $(ALLSPHINXOPTS) $(BUILDDIR)/doctest
+	@echo "Testing of doctests in the sources finished, look at the " \
+	      "results in $(BUILDDIR)/doctest/output.txt."
+
+xml:
+	$(SPHINXBUILD) -b xml $(ALLSPHINXOPTS) $(BUILDDIR)/xml
+	@echo
+	@echo "Build finished. The XML files are in $(BUILDDIR)/xml."
+
+pseudoxml:
+	$(SPHINXBUILD) -b pseudoxml $(ALLSPHINXOPTS) $(BUILDDIR)/pseudoxml
+	@echo
+	@echo "Build finished. The pseudo-XML files are in $(BUILDDIR)/pseudoxml."

docs/conf.py

@@ -0,0 +1,43 @@
+# -*- coding: utf-8 -*-
+# yamllint documentation build configuration file, created by
+# sphinx-quickstart on Thu Jan 21 21:18:52 2016.
+
+import sys
+import os
+
+sys.path.insert(0, os.path.abspath('..'))  # noqa
+
+from yamllint import __copyright__, APP_NAME, APP_VERSION
+
+# -- General configuration ------------------------------------------------
+
+extensions = [
+    'sphinx.ext.autodoc',
+]
+
+source_suffix = '.rst'
+
+master_doc = 'index'
+
+project = APP_NAME
+copyright = __copyright__
+
+version = APP_VERSION
+release = APP_VERSION
+
+pygments_style = 'sphinx'
+
+# -- Options for HTML output ----------------------------------------------
+
+html_theme = 'default'
+
+htmlhelp_basename = 'yamllintdoc'
+
+# -- Options for manual page output ---------------------------------------
+
+# One entry per manual page. List of tuples
+# (source start file, name, description, authors, manual section).
+man_pages = [
+    ('index', 'yamllint', u'yamllint Documentation',
+     [u'Adrien Vergé'], 1)
+]

docs/configuration.rst

@@ -0,0 +1,74 @@
+Configuration
+=============
+
+yamllint uses a set of *rules* to check sources files for problems. Each rule is
+independent from the others, and can be enabled, disabled or tweaked. All these
+settings can be gathered in a configuration file.
+
+To use a custom configuration file, either name it ``.yamllint`` in your working
+directory, or use the ``-c`` option:
+
+::
+
+ yamllint -c ~/myconfig file.yml
+
+Default configuration
+---------------------
+
+Unless told otherwise, yamllint uses its ``default`` configuration:
+
+.. literalinclude:: ../yamllint/conf/default.yml
+   :language: yaml
+
+Details on rules can be found on :doc:`the rules page <rules>`.
+
+Extending the default configuration
+-----------------------------------
+
+When writing a custom configuration file, you don't need to redefine every rule.
+Just extend the ``default`` configuration (or any already-existing configuration
+file).
+
+For instance, if you just want to disable the ``comments-indentation`` rule,
+your file could look like this:
+
+.. code-block:: yaml
+
+ # This is my first, very own configuration file for yamllint!
+ # It extends the default conf by adjusting some options.
+
+ extends: default
+
+ rules:
+   comments-indentation: disable  # don't bother me with this rule
+
+Similarly, if you want to set the ``line-length`` rule as a warning and be less
+strict on block sequences indentation:
+
+.. code-block:: yaml
+
+ extends: default
+
+ rules:
+   # 80 should be enough, but don't fail if a line is longer
+   line-length:
+     max: 80
+     level: warning
+
+   # accept both     key:
+   #                   - item
+   #
+   # and             key:
+   #                 - item
+   indentation:
+     indent-sequences: whatever
+
+Errors and warnings
+-------------------
+
+Problems detected by yamllint can be raised either as errors or as warnings.
+
+In both cases, the script will output them (with different colors when using the
+``standard`` output format), but the exit code can be different. More precisely,
+the script will exit will a failure code *only when* there is one or more
+error(s).

docs/development.rst

@@ -0,0 +1,8 @@
+Development
+===========
+
+yamllint provides both a script and a Python module. The latter can be used to
+write your own linting tools:
+
+.. automodule:: yamllint.linter
+   :members:

docs/index.rst

@@ -0,0 +1,30 @@
+yamllint documentation
+======================
+
+A linter for YAML files.
+
+yamllint does not only check for syntax validity, but for common cosmetic
+conventions such as lines length, trailing spaces, indentation, etc.
+
+Screenshot
+----------
+
+.. image:: screenshot.png
+   :alt: yamllint screenshot
+
+.. note::
+
+   The default output format is inspired by `eslint <http://eslint.org/>`_, a
+   great linting tool for Javascript.
+
+Table of contents
+-----------------
+
+.. toctree::
+   :maxdepth: 2
+
+   quickstart
+   configuration
+   rules
+   development
+   text_editors

docs/quickstart.rst

@@ -0,0 +1,75 @@
+Quickstart
+==========
+
+Installing yamllint
+-------------------
+
+First, install yamllint. The easiest way is to use pip, the Python package
+manager:
+
+::
+
+ sudo pip install yamllint
+
+If you prefer installing from source, you can run, from the source directory:
+
+::
+
+ python setup.py sdist
+ sudo pip install dist/yamllint-*.tar.gz
+
+Running yamllint
+----------------
+
+Basic usage:
+
+::
+
+ yamllint file.yml other-file.yaml
+
+You can also lint all YAML files in a whole directory:
+
+::
+
+ yamllint .
+
+The output will look like (colors are not displayed here):
+
+::
+
+ file.yml
+   1:4       error    trailing spaces  (trailing-spaces)
+   4:4       error    wrong indentation: expected 4 but found 3  (indentation)
+   5:4       error    duplication of key "id-00042" in mapping  (key-duplicates)
+   6:6       warning  comment not indented like content  (comments-indentation)
+   12:6      error    too many spaces after hyphen  (hyphens)
+   15:12     error    too many spaces before comma  (commas)
+
+ other-file.yaml
+   1:1       warning  missing document start "---"  (document-start)
+   6:81      error    line too long (87 > 80 characters)  (line-length)
+   10:1      error    too many blank lines (4 > 2)  (empty-lines)
+   11:4      error    too many spaces inside braces  (braces)
+
+Add the ``-f parsable`` arguments if you need an output format parsable by a
+machine (for instance for :doc:`syntax highlighting in text editors
+<text_editors>`). The output will then look like:
+
+::
+
+ file.yml:6:2: [warning] missing starting space in comment (comments)
+ file.yml:57:1: [error] trailing spaces (trailing-spaces)
+ file.yml:60:3: [error] wrong indentation: expected 4 but found 2 (indentation)
+
+If you have a custom linting configuration file (see :doc:`how to configure
+yamllint <configuration>`), it can be passed to yamllint using the ``-c``
+option:
+
+::
+
+ yamllint -c ~/myconfig file.yml
+
+.. note::
+
+   If you have a ``.yamllint`` file in your working directory, it will be
+   automatically loaded as configuration by yamllint.

docs/rules.rst

@@ -0,0 +1,95 @@
+Rules
+=====
+
+When linting a document with yamllint, a series of rules (such as
+``line-length``, ``trailing-spaces``, etc.) are checked against.
+
+A :doc:`configuration file <configuration>` can be used to enable or disable
+these rules, to set their level (*error* or *warning*), but also to tweak their
+options.
+
+This page describes the rules and their options.
+
+.. contents:: List of rules
+   :local:
+   :depth: 1
+
+braces
+------
+
+.. automodule:: yamllint.rules.braces
+
+brackets
+--------
+
+.. automodule:: yamllint.rules.brackets
+
+colons
+------
+
+.. automodule:: yamllint.rules.colons
+
+commas
+------
+
+.. automodule:: yamllint.rules.commas
+
+comments
+--------
+
+.. automodule:: yamllint.rules.comments
+
+comments-indentation
+--------------------
+
+.. automodule:: yamllint.rules.comments_indentation
+
+document-end
+------------
+
+.. automodule:: yamllint.rules.document_end
+
+document-start
+--------------
+
+.. automodule:: yamllint.rules.document_start
+
+empty-lines
+-----------
+
+.. automodule:: yamllint.rules.empty_lines
+
+hyphens
+-------
+
+.. automodule:: yamllint.rules.hyphens
+
+indentation
+-----------
+
+.. automodule:: yamllint.rules.indentation
+
+key-duplicates
+--------------
+
+.. automodule:: yamllint.rules.key_duplicates
+
+line-length
+-----------
+
+.. automodule:: yamllint.rules.line_length
+
+new-line-at-end-of-file
+-----------------------
+
+.. automodule:: yamllint.rules.new_line_at_end_of_file
+
+new-lines
+---------
+
+.. automodule:: yamllint.rules.new_lines
+
+trailing-spaces
+---------------
+
+.. automodule:: yamllint.rules.trailing_spaces

docs/text_editors.rst

@@ -0,0 +1,40 @@
+Integration with text editors
+=============================
+
+Most text editors support syntax checking and highlighting, to visually report
+syntax errors and warnings to the user. yamllint can be used to syntax-check
+YAML source, but a bit of configuration is required depending on your favorite
+text editor.
+
+Vim
+---
+
+Assuming that the `syntastic <https://github.com/scrooloose/syntastic>`_ plugin
+is installed, add to your ``.vimrc``:
+
+::
+
+ let g:syntastic_yaml_checkers = ['yamllint']
+
+Neovim
+------
+
+Assuming that the `neomake <https://github.com/benekastah/neomake>`_ plugin is
+installed, add to your ``.config/nvim/init.vim``:
+
+::
+
+ if executable('yamllint')
+   let g:neomake_yaml_yamllint_maker = {
+     \ 'args': ['-f', 'parsable'],
+     \ 'errorformat': '%E%f:%l:%c: [error] %m,%W%f:%l:%c: [warning] %m' }
+   let g:neomake_yaml_enabled_makers = ['yamllint']
+ endif
+
+Other text editors
+------------------
+
+.. rubric:: Help wanted!
+
+Your favorite text editor is not listed here? Help us improve by adding a
+section (by opening a pull-request or issue on GitHub).

setup.py

@@ -24,9 +24,10 @@ setup(
     name=APP_NAME,
     version=APP_VERSION,
     author=__author__,
-    description=APP_DESCRIPTION,
+    description=APP_DESCRIPTION.split('\n')[0],
+    long_description=APP_DESCRIPTION,
     license=__license__,
-    keywords=['yaml', 'lint', 'linter'],
+    keywords=['yaml', 'lint', 'linter', 'syntax', 'checker'],
     url='https://github.com/adrienverge/yamllint',
     classifiers=[
         'Development Status :: 4 - Beta',
@@ -42,7 +43,7 @@ setup(
     ],
 
     packages=find_packages(),
-    scripts=['bin/yamllint'],
+    entry_points={'console_scripts': ['yamllint=yamllint.cli:run']},
     package_data={'yamllint': ['conf/*.yml']},
     install_requires=['pyyaml'],
     tests_require=['nose'],

tests/common.py

@@ -18,9 +18,8 @@ import unittest
 
 import yaml
 
-from yamllint.config import parse_config
-from yamllint.errors import LintProblem
-from yamllint import lint
+from yamllint.config import YamlLintConfig
+from yamllint import linter
 
 
 class RuleTestCase(unittest.TestCase):
@@ -31,15 +30,22 @@ class RuleTestCase(unittest.TestCase):
             conf = yaml.safe_load(conf)
         conf = {'extends': 'default',
                 'rules': conf}
-        return parse_config(yaml.safe_dump(conf))
+        return YamlLintConfig(yaml.safe_dump(conf))
 
-    def check(self, source, conf, line=None, column=None, **kwargs):
+    def check(self, source, conf, **kwargs):
         expected_problems = []
         for key in kwargs:
             assert key.startswith('problem')
-            expected_problems.append(
-                LintProblem(kwargs[key][0], kwargs[key][1], rule=self.rule_id))
+            if len(kwargs[key]) > 2:
+                if kwargs[key][2] == 'syntax':
+                    rule_id = None
+                else:
+                    rule_id = kwargs[key][2]
+            else:
+                rule_id = self.rule_id
+            expected_problems.append(linter.LintProblem(
+                kwargs[key][0], kwargs[key][1], rule=rule_id))
         expected_problems.sort()
 
-        real_problems = list(lint(source, self.build_fake_config(conf)))
+        real_problems = list(linter.run(source, self.build_fake_config(conf)))
         self.assertEqual(real_problems, expected_problems)

tests/rules/test_braces.py

@@ -14,7 +14,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-from tests.rules.common import RuleTestCase
+from tests.common import RuleTestCase
 
 
 class ColonTestCase(RuleTestCase):

tests/rules/test_brackets.py

@@ -14,7 +14,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-from tests.rules.common import RuleTestCase
+from tests.common import RuleTestCase
 
 
 class ColonTestCase(RuleTestCase):

tests/rules/test_colons.py

@@ -14,7 +14,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-from tests.rules.common import RuleTestCase
+from tests.common import RuleTestCase
 
 
 class ColonTestCase(RuleTestCase):
@@ -42,7 +42,7 @@ class ColonTestCase(RuleTestCase):
                    '    - p: kdjf\n'
                    '    - q: val0\n'
                    '    - q2:\n'
-                   '      - val1\n'
+                   '        - val1\n'
                    '...\n', conf)
         self.check('---\n'
                    'object:\n'
@@ -67,7 +67,7 @@ class ColonTestCase(RuleTestCase):
                    '    - o: {k1: v1}\n'
                    '    - o:  {k1: v1}\n'
                    '    - q2:\n'
-                   '      - val1\n'
+                   '        - val1\n'
                    '...\n', conf)
         self.check('---\n'
                    'a: {b: {c:  d, e : f}}\n', conf)
@@ -94,7 +94,7 @@ class ColonTestCase(RuleTestCase):
                    '...\n', conf, problem=(2, 4))
         self.check('---\n'
                    '- lib :\n'
-                   '  - var\n'
+                   '    - var\n'
                    '...\n', conf, problem=(2, 6))
         self.check('---\n'
                    'a: {b: {c : d, e : f}}\n', conf,
@@ -118,7 +118,7 @@ class ColonTestCase(RuleTestCase):
                    '...\n', conf, problem=(3, 8))
 
     def test_before_with_explicit_block_mappings(self):
-        conf = 'colons: {max-spaces-before: 0, max-spaces-after: -1}'
+        conf = 'colons: {max-spaces-before: 0, max-spaces-after: 1}'
         self.check('---\n'
                    'object:\n'
                    '  ? key\n'
@@ -129,6 +129,30 @@ class ColonTestCase(RuleTestCase):
                    '  ? key\n'
                    '  : value\n'
                    '...\n', conf, problem=(2, 7))
+        self.check('---\n'
+                   '? >\n'
+                   '    multi-line\n'
+                   '    key\n'
+                   ': >\n'
+                   '    multi-line\n'
+                   '    value\n'
+                   '...\n', conf)
+        self.check('---\n'
+                   '- ? >\n'
+                   '      multi-line\n'
+                   '      key\n'
+                   '  : >\n'
+                   '      multi-line\n'
+                   '      value\n'
+                   '...\n', conf)
+        self.check('---\n'
+                   '- ? >\n'
+                   '      multi-line\n'
+                   '      key\n'
+                   '  :  >\n'
+                   '       multi-line\n'
+                   '       value\n'
+                   '...\n', conf, problem=(5, 5))
 
     def test_after_enabled(self):
         conf = 'colons: {max-spaces-before: -1, max-spaces-after: 1}'
@@ -152,6 +176,21 @@ class ColonTestCase(RuleTestCase):
                    'a: {b: {c:  d, e :  f}}\n', conf,
                    problem1=(2, 12), problem2=(2, 20))
 
+    def test_after_enabled_question_mark(self):
+        conf = 'colons: {max-spaces-before: -1, max-spaces-after: 1}'
+        self.check('---\n'
+                   '? key\n'
+                   ': value\n', conf)
+        self.check('---\n'
+                   '?  key\n'
+                   ': value\n', conf, problem=(2, 3))
+        self.check('---\n'
+                   '?  key\n'
+                   ':  value\n', conf, problem1=(2, 3), problem2=(3, 3))
+        self.check('---\n'
+                   '- ?  key\n'
+                   '  :  value\n', conf, problem1=(2, 5), problem2=(3, 5))
+
     def test_after_max(self):
         conf = 'colons: {max-spaces-before: -1, max-spaces-after: 3}'
         self.check('---\n'

tests/rules/test_commas.py

@@ -14,7 +14,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-from tests.rules.common import RuleTestCase
+from tests.common import RuleTestCase
 
 
 class CommaTestCase(RuleTestCase):
@@ -33,9 +33,25 @@ class CommaTestCase(RuleTestCase):
                    '  key2: val2,\n'
                    '}\n'
                    '...\n', conf)
+        self.check('---\n'
+                   '- [one, two , three,four]\n'
+                   '- {five,six , seven, eight}\n'
+                   '- [\n'
+                   '  nine,  ten\n'
+                   '  , eleven\n'
+                   '  ,twelve\n'
+                   ']\n'
+                   '- {\n'
+                   '  thirteen: 13,  fourteen\n'
+                   '  , fifteen: 15\n'
+                   '  ,sixteen: 16\n'
+                   '}\n', conf)
 
-    def test_before_enabled(self):
-        conf = 'commas: {max-spaces-before: 0, max-spaces-after: -1}'
+    def test_before_max(self):
+        conf = ('commas:\n'
+                '  max-spaces-before: 0\n'
+                '  min-spaces-after: 0\n'
+                '  max-spaces-after: -1\n')
         self.check('---\n'
                    'array: [1, 2,  3, 4]\n'
                    '...\n', conf)
@@ -75,8 +91,51 @@ class CommaTestCase(RuleTestCase):
                    '  key2: val2 ,\n'
                    '}\n', conf, problem=(4, 13))
 
-    def test_before_max(self):
-        conf = 'commas: {max-spaces-before: 3, max-spaces-after: -1}'
+    def test_before_max_with_comma_on_new_line(self):
+        conf = ('commas:\n'
+                '  max-spaces-before: 0\n'
+                '  min-spaces-after: 0\n'
+                '  max-spaces-after: -1\n')
+        self.check('---\n'
+                   'flow-seq: [1, 2, 3\n'
+                   '           , 4, 5, 6]\n'
+                   '...\n', conf, problem=(3, 11))
+        self.check('---\n'
+                   'flow-map: {a: 1, b: 2\n'
+                   '           , c: 3}\n'
+                   '...\n', conf, problem=(3, 11))
+
+        conf = ('commas:\n'
+                '  max-spaces-before: 0\n'
+                '  min-spaces-after: 0\n'
+                '  max-spaces-after: -1\n'
+                'indentation: disable\n')
+        self.check('---\n'
+                   'flow-seq: [1, 2, 3\n'
+                   '         , 4, 5, 6]\n'
+                   '...\n', conf, problem=(3, 9))
+        self.check('---\n'
+                   'flow-map: {a: 1, b: 2\n'
+                   '         , c: 3}\n'
+                   '...\n', conf, problem=(3, 9))
+        self.check('---\n'
+                   '[\n'
+                   '1,\n'
+                   '2\n'
+                   ', 3\n'
+                   ']\n', conf, problem=(5, 1))
+        self.check('---\n'
+                   '{\n'
+                   'a: 1,\n'
+                   'b: 2\n'
+                   ', c: 3\n'
+                   '}\n', conf, problem=(5, 1))
+
+    def test_before_max_3(self):
+        conf = ('commas:\n'
+                '  max-spaces-before: 3\n'
+                '  min-spaces-after: 0\n'
+                '  max-spaces-after: -1\n')
         self.check('---\n'
                    'array: [1 , 2, 3   , 4]\n'
                    '...\n', conf)
@@ -90,8 +149,32 @@ class CommaTestCase(RuleTestCase):
                    '  key: val,\n'
                    ']\n', conf, problem=(4, 11))
 
-    def test_after_enabled(self):
-        conf = 'commas: {max-spaces-before: -1, max-spaces-after: 1}'
+    def test_after_min(self):
+        conf = ('commas:\n'
+                '  max-spaces-before: -1\n'
+                '  min-spaces-after: 1\n'
+                '  max-spaces-after: -1\n')
+        self.check('---\n'
+                   '- [one, two , three,four]\n'
+                   '- {five,six , seven, eight}\n'
+                   '- [\n'
+                   '  nine,  ten\n'
+                   '  , eleven\n'
+                   '  ,twelve\n'
+                   ']\n'
+                   '- {\n'
+                   '  thirteen: 13,  fourteen\n'
+                   '  , fifteen: 15\n'
+                   '  ,sixteen: 16\n'
+                   '}\n', conf,
+                   problem1=(2, 21), problem2=(3, 9),
+                   problem3=(7, 4), problem4=(12, 4))
+
+    def test_after_max(self):
+        conf = ('commas:\n'
+                '  max-spaces-before: -1\n'
+                '  min-spaces-after: 0\n'
+                '  max-spaces-after: 1\n')
         self.check('---\n'
                    'array: [1, 2, 3, 4]\n'
                    '...\n', conf)
@@ -124,8 +207,11 @@ class CommaTestCase(RuleTestCase):
                    '  key1: val1,   key2: [val2,  val3]\n'
                    '}\n', conf, problem1=(3, 16), problem2=(3, 30))
 
-    def test_after_max(self):
-        conf = 'commas: {max-spaces-before: -1, max-spaces-after: 3}'
+    def test_after_max_3(self):
+        conf = ('commas:\n'
+                '  max-spaces-before: -1\n'
+                '  min-spaces-after: 1\n'
+                '  max-spaces-after: 3\n')
         self.check('---\n'
                    'array: [1,  2, 3,   4]\n'
                    '...\n', conf)
@@ -137,7 +223,10 @@ class CommaTestCase(RuleTestCase):
                    '...\n', conf, problem1=(2, 31), problem2=(2, 49))
 
     def test_both_before_and_after(self):
-        conf = 'commas: {max-spaces-before: 0, max-spaces-after: 1}'
+        conf = ('commas:\n'
+                '  max-spaces-before: 0\n'
+                '  min-spaces-after: 1\n'
+                '  max-spaces-after: 1\n')
         self.check('---\n'
                    'dict: {a: b ,   c: "1 2 3",    d: e , f: [g,      h]}\n'
                    'array: [\n'
@@ -152,3 +241,25 @@ class CommaTestCase(RuleTestCase):
                    problem1=(2, 12), problem2=(2, 16), problem3=(2, 31),
                    problem4=(2, 36), problem5=(2, 50), problem6=(4, 8),
                    problem7=(5, 11), problem8=(8, 13))
+        conf = ('commas:\n'
+                '  max-spaces-before: 0\n'
+                '  min-spaces-after: 1\n'
+                '  max-spaces-after: 1\n'
+                'indentation: disable\n')
+        self.check('---\n'
+                   '- [one, two , three,four]\n'
+                   '- {five,six , seven, eight}\n'
+                   '- [\n'
+                   '  nine,  ten\n'
+                   '  , eleven\n'
+                   '  ,twelve\n'
+                   ']\n'
+                   '- {\n'
+                   '  thirteen: 13,  fourteen\n'
+                   '  , fifteen: 15\n'
+                   '  ,sixteen: 16\n'
+                   '}\n', conf,
+                   problem1=(2, 12), problem2=(2, 21), problem3=(3, 9),
+                   problem4=(3, 12), problem5=(5, 9), problem6=(6, 2),
+                   problem7=(7, 2), problem8=(7, 4), problem9=(10, 17),
+                   problem10=(11, 2), problem11=(12, 2), problem12=(12, 4))

tests/rules/test_comments.py

@@ -14,7 +14,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-from tests.rules.common import RuleTestCase
+from tests.common import RuleTestCase
 
 
 class CommentsTestCase(RuleTestCase):
@@ -131,3 +131,19 @@ class CommentsTestCase(RuleTestCase):
                 '  require-starting-space: yes\n'
                 '  min-spaces-from-content: 2\n')
         self.check('# comment\n', conf)
+
+    def test_multi_line_scalar(self):
+        conf = ('comments:\n'
+                '  require-starting-space: yes\n'
+                '  min-spaces-from-content: 2\n'
+                'trailing-spaces: disable\n')
+        self.check('---\n'
+                   'string: >\n'
+                   '  this is plain text\n'
+                   '\n'
+                   '# comment\n', conf)
+        self.check('---\n'
+                   '- string: >\n'
+                   '    this is plain text\n'
+                   '  \n'
+                   '  # comment\n', conf)

tests/rules/test_comments_indentation.py

@@ -14,7 +14,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-from tests.rules.common import RuleTestCase
+from tests.common import RuleTestCase
 
 
 class CommentsIndentationTestCase(RuleTestCase):
@@ -88,15 +88,39 @@ class CommentsIndentationTestCase(RuleTestCase):
         self.check('---\n'
                    'obj1:\n'
                    '  a: 1\n'
-                   '  # comments\n'
+                   '  # the following line is disabled\n'
+                   '  # b: 2\n', conf)
+        self.check('---\n'
+                   'obj1:\n'
+                   '  a: 1\n'
+                   '  # b: 2\n'
                    '\n'
                    'obj2:\n'
-                   '  b: 2\n', conf, problem=(4, 3))
+                   '  b: 2\n', conf)
+        self.check('---\n'
+                   'obj1:\n'
+                   '  a: 1\n'
+                   '  # b: 2\n'
+                   '# this object is useless\n'
+                   'obj2: no\n', conf)
+        self.check('---\n'
+                   'obj1:\n'
+                   '  a: 1\n'
+                   '# this object is useless\n'
+                   '  # b: 2\n'
+                   'obj2: no\n', conf, problem=(5, 3))
         self.check('---\n'
                    'obj1:\n'
                    '  a: 1\n'
                    '  # comments\n'
                    '  b: 2\n', conf)
+        self.check('---\n'
+                   'my list for today:\n'
+                   '  - todo 1\n'
+                   '  - todo 2\n'
+                   '  # commented for now\n'
+                   '  # - todo 3\n'
+                   '...\n', conf)
 
     def test_first_line(self):
         conf = 'comments-indentation: {}'

tests/rules/test_common.py

@@ -18,10 +18,32 @@ import unittest
 
 import yaml
 
-from yamllint.rules.common import Comment, get_comments_between_tokens
+from yamllint.rules.common import (Comment, get_line_indent,
+                                   get_comments_between_tokens)
 
 
 class CommonTestCase(unittest.TestCase):
+    def test_get_line_indent(self):
+        tokens = list(yaml.scan('a: 1\n'
+                                'b:\n'
+                                '  - c: [2, 3, {d: 4}]\n'))
+
+        self.assertEqual(tokens[3].value, 'a')
+        self.assertEqual(tokens[5].value, '1')
+        self.assertEqual(tokens[7].value, 'b')
+        self.assertEqual(tokens[13].value, 'c')
+        self.assertEqual(tokens[16].value, '2')
+        self.assertEqual(tokens[18].value, '3')
+        self.assertEqual(tokens[22].value, 'd')
+        self.assertEqual(tokens[24].value, '4')
+
+        for i in (3, 5):
+            self.assertEqual(get_line_indent(tokens[i]), 0)
+        for i in (7,):
+            self.assertEqual(get_line_indent(tokens[i]), 0)
+        for i in (13, 16, 18, 22, 24):
+            self.assertEqual(get_line_indent(tokens[i]), 2)
+
     def check_comments(self, buffer, *expected):
         yaml_loader = yaml.BaseLoader(buffer)
 

tests/rules/test_document_end.py

@@ -14,7 +14,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-from tests.rules.common import RuleTestCase
+from tests.common import RuleTestCase
 
 
 class DocumentEndTestCase(RuleTestCase):

tests/rules/test_document_start.py

@@ -14,7 +14,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-from tests.rules.common import RuleTestCase
+from tests.common import RuleTestCase
 
 
 class DocumentStartTestCase(RuleTestCase):
@@ -82,7 +82,7 @@ class DocumentStartTestCase(RuleTestCase):
                    '...\n'
                    'second: document\n'
                    '---\n'
-                   'third: document\n', conf, problem=(4, 1))
+                   'third: document\n', conf, problem=(4, 1, 'syntax'))
 
     def test_directives(self):
         conf = 'document-start: {present: yes}'

tests/rules/test_empty_lines.py

@@ -14,7 +14,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-from tests.rules.common import RuleTestCase
+from tests.common import RuleTestCase
 
 
 class EmptyLinesTestCase(RuleTestCase):

tests/rules/test_hyphens.py

@@ -14,7 +14,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-from tests.rules.common import RuleTestCase
+from tests.common import RuleTestCase
 
 
 class HyphenTestCase(RuleTestCase):
@@ -36,12 +36,12 @@ class HyphenTestCase(RuleTestCase):
                    '- elem2\n', conf)
         self.check('---\n'
                    'object:\n'
-                   '- elem1\n'
-                   '-  elem2\n', conf)
+                   '  - elem1\n'
+                   '  -  elem2\n', conf)
         self.check('---\n'
                    'object:\n'
-                   '-  elem1\n'
-                   '-  elem2\n', conf)
+                   '  -  elem1\n'
+                   '  -  elem2\n', conf)
         self.check('---\n'
                    'object:\n'
                    '  subobject:\n'
@@ -69,12 +69,12 @@ class HyphenTestCase(RuleTestCase):
                    '- elem2\n', conf, problem=(2, 3))
         self.check('---\n'
                    'object:\n'
-                   '- elem1\n'
-                   '-  elem2\n', conf, problem=(4, 3))
+                   '  - elem1\n'
+                   '  -  elem2\n', conf, problem=(4, 5))
         self.check('---\n'
                    'object:\n'
-                   '-  elem1\n'
-                   '-  elem2\n', conf, problem1=(3, 3), problem2=(4, 3))
+                   '  -  elem1\n'
+                   '  -  elem2\n', conf, problem1=(3, 5), problem2=(4, 5))
         self.check('---\n'
                    'object:\n'
                    '  subobject:\n'

tests/rules/test_indentation.py

@@ -14,7 +14,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-from tests.rules.common import RuleTestCase
+from tests.common import RuleTestCase
 
 
 class IndentationTestCase(RuleTestCase):
@@ -48,37 +48,205 @@ class IndentationTestCase(RuleTestCase):
                    '...\n', conf)
 
     def test_one_space(self):
-        conf = 'indentation: {spaces: 1}'
+        conf = 'indentation: {spaces: 1, indent-sequences: no}'
+        self.check('---\n'
+                   'object:\n'
+                   ' k1:\n'
+                   ' - a\n'
+                   ' - b\n'
+                   ' k2: v2\n'
+                   ' k3:\n'
+                   ' - name: Unix\n'
+                   '   date: 1969\n'
+                   ' - name: Linux\n'
+                   '   date: 1991\n'
+                   '...\n', conf)
+        conf = 'indentation: {spaces: 1, indent-sequences: yes}'
         self.check('---\n'
                    'object:\n'
                    ' k1:\n'
                    '  - a\n'
                    '  - b\n'
                    ' k2: v2\n'
+                   ' k3:\n'
+                   '  - name: Unix\n'
+                   '    date: 1969\n'
+                   '  - name: Linux\n'
+                   '    date: 1991\n'
                    '...\n', conf)
 
     def test_two_spaces(self):
-        conf = 'indentation: {spaces: 2}'
+        conf = 'indentation: {spaces: 2, indent-sequences: no}'
+        self.check('---\n'
+                   'object:\n'
+                   '  k1:\n'
+                   '  - a\n'
+                   '  - b\n'
+                   '  k2: v2\n'
+                   '  k3:\n'
+                   '  - name: Unix\n'
+                   '    date: 1969\n'
+                   '  - name: Linux\n'
+                   '    date: 1991\n'
+                   '...\n', conf)
+        conf = 'indentation: {spaces: 2, indent-sequences: yes}'
         self.check('---\n'
                    'object:\n'
                    '  k1:\n'
                    '    - a\n'
                    '    - b\n'
                    '  k2: v2\n'
+                   '  k3:\n'
+                   '    - name: Unix\n'
+                   '      date: 1969\n'
+                   '    - name: Linux\n'
+                   '      date: 1991\n'
                    '...\n', conf)
 
     def test_three_spaces(self):
-        conf = 'indentation: {spaces: 3}'
+        conf = 'indentation: {spaces: 3, indent-sequences: no}'
+        self.check('---\n'
+                   'object:\n'
+                   '   k1:\n'
+                   '   - a\n'
+                   '   - b\n'
+                   '   k2: v2\n'
+                   '   k3:\n'
+                   '   - name: Unix\n'
+                   '     date: 1969\n'
+                   '   - name: Linux\n'
+                   '     date: 1991\n'
+                   '...\n', conf)
+        conf = 'indentation: {spaces: 3, indent-sequences: yes}'
         self.check('---\n'
                    'object:\n'
                    '   k1:\n'
                    '      - a\n'
                    '      - b\n'
                    '   k2: v2\n'
+                   '   k3:\n'
+                   '      - name: Unix\n'
+                   '        date: 1969\n'
+                   '      - name: Linux\n'
+                   '        date: 1991\n'
                    '...\n', conf)
 
-    def test_under_indented(self):
+    def test_indent_sequences_whatever(self):
+        conf = 'indentation: {spaces: 4, indent-sequences: whatever}'
+        self.check('---\n'
+                   'list one:\n'
+                   '- 1\n'
+                   '- 2\n'
+                   '- 3\n'
+                   'list two:\n'
+                   '    - a\n'
+                   '    - b\n'
+                   '    - c\n', conf)
+        self.check('---\n'
+                   'list one:\n'
+                   '  - 1\n'
+                   '  - 2\n'
+                   '  - 3\n'
+                   'list two:\n'
+                   '    - a\n'
+                   '    - b\n'
+                   '    - c\n', conf, problem=(3, 3))
+        self.check('---\n'
+                   'list one:\n'
+                   '- 1\n'
+                   '- 2\n'
+                   '- 3\n'
+                   'list two:\n'
+                   '  - a\n'
+                   '  - b\n'
+                   '  - c\n', conf, problem=(7, 3))
+        self.check('---\n'
+                   'list:\n'
+                   '    - 1\n'
+                   '    - 2\n'
+                   '    - 3\n'
+                   '- a\n'
+                   '- b\n'
+                   '- c\n', conf, problem=(6, 1, 'syntax'))
+
+    def test_flow_mappings(self):
         conf = 'indentation: {spaces: 2}'
+        self.check('---\n'
+                   'a: {x: 1,\n'
+                   '    y,\n'
+                   '    z: 1}\n', conf)
+        self.check('---\n'
+                   'a: {x: 1,\n'
+                   '   y,\n'
+                   '    z: 1}\n', conf, problem=(3, 4))
+        self.check('---\n'
+                   'a: {x: 1,\n'
+                   '     y,\n'
+                   '    z: 1}\n', conf, problem=(3, 6))
+        self.check('---\n'
+                   'a: {x: 1,\n'
+                   '  y, z: 1\n'
+                   '}\n', conf, problem=(3, 3))
+        self.check('---\n'
+                   'a: {\n'
+                   '  x: 1,\n'
+                   '  y, z: 1\n'
+                   '}\n', conf)
+        self.check('---\n'
+                   'a: {\n'
+                   '  x: 1,\n'
+                   '  y, z: 1}\n', conf)
+        self.check('---\n'
+                   'a: {\n'
+                   '   x: 1,\n'
+                   '  y, z: 1\n'
+                   '}\n', conf, problem=(3, 4))
+        self.check('---\n'
+                   'a: {\n'
+                   '  x: 1,\n'
+                   '  y, z: 1\n'
+                   '  }\n', conf, problem=(5, 3))
+
+    def test_flow_sequences(self):
+        conf = 'indentation: {spaces: 2}'
+        self.check('---\n'
+                   'a: [x,\n'
+                   '    y,\n'
+                   '    z]\n', conf)
+        self.check('---\n'
+                   'a: [x,\n'
+                   '   y,\n'
+                   '    z]\n', conf, problem=(3, 4))
+        self.check('---\n'
+                   'a: [x,\n'
+                   '     y,\n'
+                   '    z]\n', conf, problem=(3, 6))
+        self.check('---\n'
+                   'a: [x,\n'
+                   '  y, z\n'
+                   ']\n', conf, problem=(3, 3))
+        self.check('---\n'
+                   'a: [\n'
+                   '  x,\n'
+                   '  y, z\n'
+                   ']\n', conf)
+        self.check('---\n'
+                   'a: [\n'
+                   '  x,\n'
+                   '  y, z]\n', conf)
+        self.check('---\n'
+                   'a: [\n'
+                   '   x,\n'
+                   '  y, z\n'
+                   ']\n', conf, problem=(3, 4))
+        self.check('---\n'
+                   'a: [\n'
+                   '  x,\n'
+                   '  y, z\n'
+                   '  ]\n', conf, problem=(5, 3))
+
+    def test_under_indented(self):
+        conf = 'indentation: {spaces: 2, indent-sequences: yes}'
         self.check('---\n'
                    'object:\n'
                    ' val: 1\n'
@@ -88,7 +256,13 @@ class IndentationTestCase(RuleTestCase):
                    '  k1:\n'
                    '   - a\n'
                    '...\n', conf, problem=(4, 4))
-        conf = 'indentation: {spaces: 4}'
+        self.check('---\n'
+                   'object:\n'
+                   '  k3:\n'
+                   '    - name: Unix\n'
+                   '     date: 1969\n'
+                   '...\n', conf, problem=(5, 6, 'syntax'))
+        conf = 'indentation: {spaces: 4, indent-sequences: yes}'
         self.check('---\n'
                    'object:\n'
                    '   val: 1\n'
@@ -98,9 +272,15 @@ class IndentationTestCase(RuleTestCase):
                    '- el2:\n'
                    '   - subel\n'
                    '...\n', conf, problem=(4, 4))
+        self.check('---\n'
+                   'object:\n'
+                   '    k3:\n'
+                   '        - name: Linux\n'
+                   '         date: 1991\n'
+                   '...\n', conf, problem=(5, 10, 'syntax'))
 
     def test_over_indented(self):
-        conf = 'indentation: {spaces: 2}'
+        conf = 'indentation: {spaces: 2, indent-sequences: yes}'
         self.check('---\n'
                    'object:\n'
                    '   val: 1\n'
@@ -110,7 +290,13 @@ class IndentationTestCase(RuleTestCase):
                    '  k1:\n'
                    '     - a\n'
                    '...\n', conf, problem=(4, 6))
-        conf = 'indentation: {spaces: 4}'
+        self.check('---\n'
+                   'object:\n'
+                   '  k3:\n'
+                   '    - name: Unix\n'
+                   '       date: 1969\n'
+                   '...\n', conf, problem=(5, 12, 'syntax'))
+        conf = 'indentation: {spaces: 4, indent-sequences: yes}'
         self.check('---\n'
                    'object:\n'
                    '     val: 1\n'
@@ -118,7 +304,7 @@ class IndentationTestCase(RuleTestCase):
         self.check('---\n'
                    ' object:\n'
                    '     val: 1\n'
-                   '...\n', conf, problem1=(2, 2), problem2=(3, 6))
+                   '...\n', conf, problem=(2, 2))
         self.check('---\n'
                    '- el1\n'
                    '- el2:\n'
@@ -129,30 +315,57 @@ class IndentationTestCase(RuleTestCase):
                    '- el2:\n'
                    '              - subel\n'
                    '...\n', conf, problem=(4, 15))
+        self.check('---\n'
+                   '  - el1\n'
+                   '  - el2:\n'
+                   '        - subel\n'
+                   '...\n', conf,
+                   problem=(2, 3))
+        self.check('---\n'
+                   'object:\n'
+                   '    k3:\n'
+                   '        - name: Linux\n'
+                   '           date: 1991\n'
+                   '...\n', conf, problem=(5, 16, 'syntax'))
+        conf = 'indentation: {spaces: 4, indent-sequences: whatever}'
         self.check('---\n'
                    '  - el1\n'
                    '  - el2:\n'
                    '    - subel\n'
                    '...\n', conf,
-                   problem1=(2, 3), problem2=(3, 3), problem3=(4, 5))
+                   problem=(2, 3))
 
     def test_multi_lines(self):
+        conf = 'indentation: {spaces: 2, indent-sequences: yes}'
         self.check('---\n'
                    'long_string: >\n'
                    '  bla bla blah\n'
                    '  blah bla bla\n'
-                   '...\n', None)
+                   '...\n', conf)
         self.check('---\n'
                    '- long_string: >\n'
                    '    bla bla blah\n'
                    '    blah bla bla\n'
-                   '...\n', None)
+                   '...\n', conf)
         self.check('---\n'
                    'obj:\n'
                    '  - long_string: >\n'
                    '      bla bla blah\n'
                    '      blah bla bla\n'
-                   '...\n', None)
+                   '...\n', conf)
+
+    def test_empty_value(self):
+        conf = 'indentation: {spaces: 2}'
+        self.check('---\n'
+                   'key1:\n'
+                   'key2: not empty\n'
+                   'key3:\n'
+                   '...\n', conf)
+        self.check('---\n'
+                   '-\n'
+                   '- item 2\n'
+                   '-\n'
+                   '...\n', conf)
 
     def test_nested_collections(self):
         conf = 'indentation: {spaces: 2}'
@@ -163,7 +376,7 @@ class IndentationTestCase(RuleTestCase):
         self.check('---\n'
                    '- o:\n'
                    ' k1: v1\n'
-                   '...\n', conf, problem=(3, 2))
+                   '...\n', conf, problem=(3, 2, 'syntax'))
         self.check('---\n'
                    '- o:\n'
                    '   k1: v1\n'
@@ -171,18 +384,33 @@ class IndentationTestCase(RuleTestCase):
         conf = 'indentation: {spaces: 4}'
         self.check('---\n'
                    '- o:\n'
-                   '    k1: v1\n'
+                   '      k1: v1\n'
                    '...\n', conf)
-        self.check('---\n'
-                   '- o:\n'
-                   '   k1: v1\n'
-                   '...\n', conf, problem=(3, 4))
         self.check('---\n'
                    '- o:\n'
                    '     k1: v1\n'
                    '...\n', conf, problem=(3, 6))
+        self.check('---\n'
+                   '- o:\n'
+                   '       k1: v1\n'
+                   '...\n', conf, problem=(3, 8))
+        self.check('---\n'
+                   '- - - - item\n'
+                   '    - elem 1\n'
+                   '    - elem 2\n'
+                   '    - - - - - very nested: a\n'
+                   '              key: value\n'
+                   '...\n', conf)
+        self.check('---\n'
+                   ' - - - - item\n'
+                   '     - elem 1\n'
+                   '     - elem 2\n'
+                   '     - - - - - very nested: a\n'
+                   '               key: value\n'
+                   '...\n', conf, problem=(2, 2))
 
     def test_return(self):
+        conf = 'indentation: {spaces: 2}'
         self.check('---\n'
                    'a:\n'
                    '  b:\n'
@@ -191,19 +419,19 @@ class IndentationTestCase(RuleTestCase):
                    '    e:\n'
                    '      f:\n'
                    'g:\n'
-                   '...\n', None)
-        # self.check('---\n'
-        #            'a:\n'
-        #            '  b:\n'
-        #            '    c:\n'
-        #            '   d:\n'
-        #            '...\n', None, problem=(5, 5))
-        # self.check('---\n'
-        #            'a:\n'
-        #            '  b:\n'
-        #            '    c:\n'
-        #            ' d:\n'
-        #            '...\n', None, problem=(5, 2))
+                   '...\n', conf)
+        self.check('---\n'
+                   'a:\n'
+                   '  b:\n'
+                   '    c:\n'
+                   '   d:\n'
+                   '...\n', conf, problem=(5, 4, 'syntax'))
+        self.check('---\n'
+                   'a:\n'
+                   '  b:\n'
+                   '    c:\n'
+                   ' d:\n'
+                   '...\n', conf, problem=(5, 2, 'syntax'))
 
     def test_first_line(self):
         conf = ('indentation: {spaces: 2}\n'
@@ -224,3 +452,489 @@ class IndentationTestCase(RuleTestCase):
                    '   2,\n'
                    ' 3\n'
                    ']\n', conf, problem1=(4, 4), problem2=(5, 2))
+
+    def test_explicit_block_mappings(self):
+        conf = 'indentation: {spaces: 4}'
+        self.check('---\n'
+                   'object:\n'
+                   '    ? key\n'
+                   '    :\n'
+                   '        value\n'
+                   '...\n', conf)
+        self.check('---\n'
+                   'object:\n'
+                   '    ? key\n'
+                   '    :\n'
+                   '       value\n'
+                   '...\n', conf, problem=(5, 8))
+        self.check('---\n'
+                   'object:\n'
+                   '    ?\n'
+                   '        key\n'
+                   '    :\n'
+                   '        value\n'
+                   '...\n', conf)
+        self.check('---\n'
+                   'object:\n'
+                   '    ?\n'
+                   '       key\n'
+                   '    :\n'
+                   '         value\n'
+                   '...\n', conf, problem1=(4, 8), problem2=(6, 10))
+        self.check('---\n'
+                   'object:\n'
+                   '    ?\n'
+                   '         key\n'
+                   '    :\n'
+                   '       value\n'
+                   '...\n', conf, problem1=(4, 10), problem2=(6, 8))
+
+    def test_clear_sequence_item(self):
+        conf = 'indentation: {spaces: 2}'
+        self.check('---\n'
+                   '-\n'
+                   '  string\n'
+                   '-\n'
+                   '  map: ping\n'
+                   '-\n'
+                   '  - sequence\n'
+                   '  -\n'
+                   '    nested\n'
+                   '  -\n'
+                   '    >\n'
+                   '      multi\n'
+                   '      line\n'
+                   '...\n', conf)
+        self.check('---\n'
+                   '-\n'
+                   ' string\n'
+                   '-\n'
+                   '   string\n', conf, problem1=(3, 2), problem2=(5, 4))
+        self.check('---\n'
+                   '-\n'
+                   ' map: ping\n'
+                   '-\n'
+                   '   map: ping\n', conf, problem1=(3, 2), problem2=(5, 4))
+        self.check('---\n'
+                   '-\n'
+                   ' - sequence\n'
+                   '-\n'
+                   '   - sequence\n', conf, problem1=(3, 2), problem2=(5, 4))
+        self.check('---\n'
+                   '-\n'
+                   '  -\n'
+                   '   nested\n'
+                   '  -\n'
+                   '     nested\n', conf, problem1=(4, 4), problem2=(6, 6))
+        self.check('---\n'
+                   '-\n'
+                   '  -\n'
+                   '     >\n'
+                   '      multi\n'
+                   '      line\n'
+                   '...\n', conf, problem=(4, 6))
+
+
+class ScalarIndentationTestCase(RuleTestCase):
+    rule_id = 'indentation'
+
+    def test_basics_plain(self):
+        conf = ('indentation: {spaces: 2, check-multi-line-strings: no}\n'
+                'document-start: disable\n')
+        self.check('multi\n'
+                   'line\n', conf)
+        self.check('multi\n'
+                   ' line\n', conf)
+        self.check('- multi\n'
+                   '  line\n', conf)
+        self.check('- multi\n'
+                   '   line\n', conf)
+        self.check('a key: multi\n'
+                   '       line\n', conf)
+        self.check('a key: multi\n'
+                   '  line\n', conf)
+        self.check('a key: multi\n'
+                   '        line\n', conf)
+        self.check('a key:\n'
+                   '  multi\n'
+                   '  line\n', conf)
+        self.check('- C code: void main() {\n'
+                   '              printf("foo");\n'
+                   '          }\n', conf)
+        self.check('- C code:\n'
+                   '    void main() {\n'
+                   '        printf("foo");\n'
+                   '    }\n', conf)
+
+    def test_check_multi_line_plain(self):
+        conf = ('indentation: {spaces: 2, check-multi-line-strings: yes}\n'
+                'document-start: disable\n')
+        self.check('multi\n'
+                   ' line\n', conf, problem=(2, 2))
+        self.check('- multi\n'
+                   '   line\n', conf, problem=(2, 4))
+        self.check('a key: multi\n'
+                   '  line\n', conf, problem=(2, 3))
+        self.check('a key: multi\n'
+                   '        line\n', conf, problem=(2, 9))
+        self.check('a key:\n'
+                   '  multi\n'
+                   '   line\n', conf, problem=(3, 4))
+        self.check('- C code: void main() {\n'
+                   '              printf("foo");\n'
+                   '          }\n', conf, problem=(2, 15))
+        self.check('- C code:\n'
+                   '    void main() {\n'
+                   '        printf("foo");\n'
+                   '    }\n', conf, problem=(3, 9))
+
+    def test_basics_quoted(self):
+        conf = ('indentation: {spaces: 2, check-multi-line-strings: no}\n'
+                'document-start: disable\n')
+        self.check('"multi\n'
+                   ' line"\n', conf)
+        self.check('- "multi\n'
+                   '   line"\n', conf)
+        self.check('a key: "multi\n'
+                   '        line"\n', conf)
+        self.check('a key:\n'
+                   '  "multi\n'
+                   '   line"\n', conf)
+        self.check('- jinja2: "{% if ansible is defined %}\n'
+                   '             {{ ansible }}\n'
+                   '           {% else %}\n'
+                   '             {{ chef }}\n'
+                   '           {% endif %}"\n', conf)
+        self.check('- jinja2:\n'
+                   '    "{% if ansible is defined %}\n'
+                   '       {{ ansible }}\n'
+                   '     {% else %}\n'
+                   '       {{ chef }}\n'
+                   '     {% endif %}"\n', conf)
+        self.check('["this is a very long line\n'
+                   '  that needs to be split",\n'
+                   ' "other line"]\n', conf)
+        self.check('["multi\n'
+                   '  line 1", "multi\n'
+                   '            line 2"]\n', conf)
+
+    def test_check_multi_line_quoted(self):
+        conf = ('indentation: {spaces: 2, check-multi-line-strings: yes}\n'
+                'document-start: disable\n')
+        self.check('"multi\n'
+                   'line"\n', conf, problem=(2, 1))
+        self.check('"multi\n'
+                   '  line"\n', conf, problem=(2, 3))
+        self.check('- "multi\n'
+                   '  line"\n', conf, problem=(2, 3))
+        self.check('- "multi\n'
+                   '    line"\n', conf, problem=(2, 5))
+        self.check('a key: "multi\n'
+                   '  line"\n', conf, problem=(2, 3))
+        self.check('a key: "multi\n'
+                   '       line"\n', conf, problem=(2, 8))
+        self.check('a key: "multi\n'
+                   '         line"\n', conf, problem=(2, 10))
+        self.check('a key:\n'
+                   '  "multi\n'
+                   '  line"\n', conf, problem=(3, 3))
+        self.check('a key:\n'
+                   '  "multi\n'
+                   '    line"\n', conf, problem=(3, 5))
+        self.check('- jinja2: "{% if ansible is defined %}\n'
+                   '             {{ ansible }}\n'
+                   '           {% else %}\n'
+                   '             {{ chef }}\n'
+                   '           {% endif %}"\n', conf,
+                   problem1=(2, 14), problem2=(4, 14))
+        self.check('- jinja2:\n'
+                   '    "{% if ansible is defined %}\n'
+                   '       {{ ansible }}\n'
+                   '     {% else %}\n'
+                   '       {{ chef }}\n'
+                   '     {% endif %}"\n', conf,
+                   problem1=(3, 8), problem2=(5, 8))
+        self.check('["this is a very long line\n'
+                   '  that needs to be split",\n'
+                   ' "other line"]\n', conf)
+        self.check('["this is a very long line\n'
+                   ' that needs to be split",\n'
+                   ' "other line"]\n', conf, problem=(2, 2))
+        self.check('["this is a very long line\n'
+                   '   that needs to be split",\n'
+                   ' "other line"]\n', conf, problem=(2, 4))
+        self.check('["multi\n'
+                   '  line 1", "multi\n'
+                   '            line 2"]\n', conf)
+        self.check('["multi\n'
+                   '  line 1", "multi\n'
+                   '           line 2"]\n', conf, problem=(3, 12))
+        self.check('["multi\n'
+                   '  line 1", "multi\n'
+                   '             line 2"]\n', conf, problem=(3, 14))
+
+    def test_basics_folded_style(self):
+        conf = ('indentation: {spaces: 2, check-multi-line-strings: no}\n'
+                'document-start: disable\n')
+        self.check('>\n'
+                   '  multi\n'
+                   '  line\n', conf)
+        self.check('- >\n'
+                   '    multi\n'
+                   '    line\n', conf)
+        self.check('- key: >\n'
+                   '    multi\n'
+                   '    line\n', conf)
+        self.check('- key:\n'
+                   '    >\n'
+                   '      multi\n'
+                   '      line\n', conf)
+        self.check('- ? >\n'
+                   '      multi-line\n'
+                   '      key\n'
+                   '  : >\n'
+                   '      multi-line\n'
+                   '      value\n', conf)
+        self.check('- ?\n'
+                   '    >\n'
+                   '      multi-line\n'
+                   '      key\n'
+                   '  :\n'
+                   '    >\n'
+                   '      multi-line\n'
+                   '      value\n', conf)
+        self.check('- jinja2: >\n'
+                   '    {% if ansible is defined %}\n'
+                   '      {{ ansible }}\n'
+                   '    {% else %}\n'
+                   '      {{ chef }}\n'
+                   '    {% endif %}\n', conf)
+
+    def test_check_multi_line_folded_style(self):
+        conf = ('indentation: {spaces: 2, check-multi-line-strings: yes}\n'
+                'document-start: disable\n')
+        self.check('>\n'
+                   '  multi\n'
+                   '   line\n', conf, problem=(3, 4))
+        self.check('- >\n'
+                   '    multi\n'
+                   '     line\n', conf, problem=(3, 6))
+        self.check('- key: >\n'
+                   '    multi\n'
+                   '     line\n', conf, problem=(3, 6))
+        self.check('- key:\n'
+                   '    >\n'
+                   '      multi\n'
+                   '       line\n', conf, problem=(4, 8))
+        self.check('- ? >\n'
+                   '      multi-line\n'
+                   '       key\n'
+                   '  : >\n'
+                   '      multi-line\n'
+                   '       value\n', conf,
+                   problem1=(3, 8), problem2=(6, 8))
+        self.check('- ?\n'
+                   '    >\n'
+                   '      multi-line\n'
+                   '       key\n'
+                   '  :\n'
+                   '    >\n'
+                   '      multi-line\n'
+                   '       value\n', conf,
+                   problem1=(4, 8), problem2=(8, 8))
+        self.check('- jinja2: >\n'
+                   '    {% if ansible is defined %}\n'
+                   '      {{ ansible }}\n'
+                   '    {% else %}\n'
+                   '      {{ chef }}\n'
+                   '    {% endif %}\n', conf,
+                   problem1=(3, 7), problem2=(5, 7))
+
+    def test_basics_literal_style(self):
+        conf = ('indentation: {spaces: 2, check-multi-line-strings: no}\n'
+                'document-start: disable\n')
+        self.check('|\n'
+                   '  multi\n'
+                   '  line\n', conf)
+        self.check('- |\n'
+                   '    multi\n'
+                   '    line\n', conf)
+        self.check('- key: |\n'
+                   '    multi\n'
+                   '    line\n', conf)
+        self.check('- key:\n'
+                   '    |\n'
+                   '      multi\n'
+                   '      line\n', conf)
+        self.check('- ? |\n'
+                   '      multi-line\n'
+                   '      key\n'
+                   '  : |\n'
+                   '      multi-line\n'
+                   '      value\n', conf)
+        self.check('- ?\n'
+                   '    |\n'
+                   '      multi-line\n'
+                   '      key\n'
+                   '  :\n'
+                   '    |\n'
+                   '      multi-line\n'
+                   '      value\n', conf)
+        self.check('- jinja2: |\n'
+                   '    {% if ansible is defined %}\n'
+                   '     {{ ansible }}\n'
+                   '    {% else %}\n'
+                   '      {{ chef }}\n'
+                   '    {% endif %}\n', conf)
+
+    def test_check_multi_line_literal_style(self):
+        conf = ('indentation: {spaces: 2, check-multi-line-strings: yes}\n'
+                'document-start: disable\n')
+        self.check('|\n'
+                   '  multi\n'
+                   '   line\n', conf, problem=(3, 4))
+        self.check('- |\n'
+                   '    multi\n'
+                   '     line\n', conf, problem=(3, 6))
+        self.check('- key: |\n'
+                   '    multi\n'
+                   '     line\n', conf, problem=(3, 6))
+        self.check('- key:\n'
+                   '    |\n'
+                   '      multi\n'
+                   '       line\n', conf, problem=(4, 8))
+        self.check('- ? |\n'
+                   '      multi-line\n'
+                   '       key\n'
+                   '  : |\n'
+                   '      multi-line\n'
+                   '       value\n', conf,
+                   problem1=(3, 8), problem2=(6, 8))
+        self.check('- ?\n'
+                   '    |\n'
+                   '      multi-line\n'
+                   '       key\n'
+                   '  :\n'
+                   '    |\n'
+                   '      multi-line\n'
+                   '       value\n', conf,
+                   problem1=(4, 8), problem2=(8, 8))
+        self.check('- jinja2: |\n'
+                   '    {% if ansible is defined %}\n'
+                   '      {{ ansible }}\n'
+                   '    {% else %}\n'
+                   '      {{ chef }}\n'
+                   '    {% endif %}\n', conf,
+                   problem1=(3, 7), problem2=(5, 7))
+
+    # The following "paragraph" examples are inspired from
+    # http://stackoverflow.com/questions/3790454/in-yaml-how-do-i-break-a-string-over-multiple-lines
+
+    def test_paragraph_plain(self):
+        conf = ('indentation: {spaces: 2, check-multi-line-strings: yes}\n'
+                'document-start: disable\n')
+        self.check('- long text: very "long"\n'
+                   '             \'string\' with\n'
+                   '\n'
+                   '             paragraph gap, \\n and\n'
+                   '             spaces.\n', conf)
+        self.check('- long text: very "long"\n'
+                   '    \'string\' with\n'
+                   '\n'
+                   '    paragraph gap, \\n and\n'
+                   '    spaces.\n', conf,
+                   problem1=(2, 5), problem2=(4, 5), problem3=(5, 5))
+        self.check('- long text:\n'
+                   '    very "long"\n'
+                   '    \'string\' with\n'
+                   '\n'
+                   '    paragraph gap, \\n and\n'
+                   '    spaces.\n', conf)
+
+    def test_paragraph_double_quoted(self):
+        conf = ('indentation: {spaces: 2, check-multi-line-strings: yes}\n'
+                'document-start: disable\n')
+        self.check('- long text: "very \\"long\\"\n'
+                   '              \'string\' with\n'
+                   '\n'
+                   '              paragraph gap, \\n and\n'
+                   '              spaces."\n', conf)
+        self.check('- long text: "very \\"long\\"\n'
+                   '    \'string\' with\n'
+                   '\n'
+                   '    paragraph gap, \\n and\n'
+                   '    spaces."\n', conf,
+                   problem1=(2, 5), problem2=(4, 5), problem3=(5, 5))
+        self.check('- long text: "very \\"long\\"\n'
+                   '\'string\' with\n'
+                   '\n'
+                   'paragraph gap, \\n and\n'
+                   'spaces."\n', conf,
+                   problem1=(2, 1), problem2=(4, 1), problem3=(5, 1))
+        self.check('- long text:\n'
+                   '    "very \\"long\\"\n'
+                   '     \'string\' with\n'
+                   '\n'
+                   '     paragraph gap, \\n and\n'
+                   '     spaces."\n', conf)
+
+    def test_paragraph_single_quoted(self):
+        conf = ('indentation: {spaces: 2, check-multi-line-strings: yes}\n'
+                'document-start: disable\n')
+        self.check('- long text: \'very "long"\n'
+                   '              \'\'string\'\' with\n'
+                   '\n'
+                   '              paragraph gap, \\n and\n'
+                   '              spaces.\'\n', conf)
+        self.check('- long text: \'very "long"\n'
+                   '    \'\'string\'\' with\n'
+                   '\n'
+                   '    paragraph gap, \\n and\n'
+                   '    spaces.\'\n', conf,
+                   problem1=(2, 5), problem2=(4, 5), problem3=(5, 5))
+        self.check('- long text: \'very "long"\n'
+                   '\'\'string\'\' with\n'
+                   '\n'
+                   'paragraph gap, \\n and\n'
+                   'spaces.\'\n', conf,
+                   problem1=(2, 1), problem2=(4, 1), problem3=(5, 1))
+        self.check('- long text:\n'
+                   '    \'very "long"\n'
+                   '     \'\'string\'\' with\n'
+                   '\n'
+                   '     paragraph gap, \\n and\n'
+                   '     spaces.\'\n', conf)
+
+    def test_paragraph_folded(self):
+        conf = ('indentation: {spaces: 2, check-multi-line-strings: yes}\n'
+                'document-start: disable\n')
+        self.check('- long text: >\n'
+                   '    very "long"\n'
+                   '    \'string\' with\n'
+                   '\n'
+                   '    paragraph gap, \\n and\n'
+                   '    spaces.\n', conf)
+        self.check('- long text: >\n'
+                   '    very "long"\n'
+                   '     \'string\' with\n'
+                   '\n'
+                   '      paragraph gap, \\n and\n'
+                   '       spaces.\n', conf,
+                   problem1=(3, 6), problem2=(5, 7), problem3=(6, 8))
+
+    def test_paragraph_literal(self):
+        conf = ('indentation: {spaces: 2, check-multi-line-strings: yes}\n'
+                'document-start: disable\n')
+        self.check('- long text: |\n'
+                   '    very "long"\n'
+                   '    \'string\' with\n'
+                   '\n'
+                   '    paragraph gap, \\n and\n'
+                   '    spaces.\n', conf)
+        self.check('- long text: |\n'
+                   '    very "long"\n'
+                   '     \'string\' with\n'
+                   '\n'
+                   '      paragraph gap, \\n and\n'
+                   '       spaces.\n', conf,
+                   problem1=(3, 6), problem2=(5, 7), problem3=(6, 8))

tests/rules/test_key_duplicates.py

@@ -0,0 +1,156 @@
+# -*- coding: utf-8 -*-
+# Copyright (C) 2016 Adrien Vergé
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from tests.common import RuleTestCase
+
+
+class KeyDuplicatesTestCase(RuleTestCase):
+    rule_id = 'key-duplicates'
+
+    def test_disabled(self):
+        conf = 'key-duplicates: disable'
+        self.check('---\n'
+                   'block mapping:\n'
+                   '  key: a\n'
+                   '  otherkey: b\n'
+                   '  key: c\n', conf)
+        self.check('---\n'
+                   'flow mapping:\n'
+                   '  {key: a, otherkey: b, key: c}\n', conf)
+        self.check('---\n'
+                   'duplicated twice:\n'
+                   '  - k: a\n'
+                   '    ok: b\n'
+                   '    k: c\n'
+                   '    k: d\n', conf)
+        self.check('---\n'
+                   'duplicated twice:\n'
+                   '  - {k: a, ok: b, k: c, k: d}\n', conf)
+        self.check('---\n'
+                   'multiple duplicates:\n'
+                   '  a: 1\n'
+                   '  b: 2\n'
+                   '  c: 3\n'
+                   '  d: 4\n'
+                   '  d: 5\n'
+                   '  b: 6\n', conf)
+        self.check('---\n'
+                   'multiple duplicates:\n'
+                   '  {a: 1, b: 2, c: 3, d: 4, d: 5, b: 6}\n', conf)
+        self.check('---\n'
+                   'at: root\n'
+                   'multiple: times\n'
+                   'at: root\n', conf)
+        self.check('---\n'
+                   'nested but OK:\n'
+                   '  a: {a: {a: 1}}\n'
+                   '  b:\n'
+                   '    b: 2\n'
+                   '    c: 3\n', conf)
+        self.check('---\n'
+                   'nested duplicates:\n'
+                   '  a: {a: 1, a: 1}\n'
+                   '  b:\n'
+                   '    c: 3\n'
+                   '    d: 4\n'
+                   '    d: 4\n'
+                   '  b: 2\n', conf)
+        self.check('---\n'
+                   'duplicates with many styles: 1\n'
+                   '"duplicates with many styles": 1\n'
+                   '\'duplicates with many styles\': 1\n'
+                   '? duplicates with many styles\n'
+                   ': 1\n'
+                   '? >-\n'
+                   '    duplicates with\n'
+                   '    many styles\n'
+                   ': 1\n', conf)
+
+    def test_enabled(self):
+        conf = 'key-duplicates: {}'
+        self.check('---\n'
+                   'block mapping:\n'
+                   '  key: a\n'
+                   '  otherkey: b\n'
+                   '  key: c\n', conf,
+                   problem=(5, 3))
+        self.check('---\n'
+                   'flow mapping:\n'
+                   '  {key: a, otherkey: b, key: c}\n', conf,
+                   problem=(3, 25))
+        self.check('---\n'
+                   'duplicated twice:\n'
+                   '  - k: a\n'
+                   '    ok: b\n'
+                   '    k: c\n'
+                   '    k: d\n', conf,
+                   problem1=(5, 5), problem2=(6, 5))
+        self.check('---\n'
+                   'duplicated twice:\n'
+                   '  - {k: a, ok: b, k: c, k: d}\n', conf,
+                   problem1=(3, 19), problem2=(3, 25))
+        self.check('---\n'
+                   'multiple duplicates:\n'
+                   '  a: 1\n'
+                   '  b: 2\n'
+                   '  c: 3\n'
+                   '  d: 4\n'
+                   '  d: 5\n'
+                   '  b: 6\n', conf,
+                   problem1=(7, 3), problem2=(8, 3))
+        self.check('---\n'
+                   'multiple duplicates:\n'
+                   '  {a: 1, b: 2, c: 3, d: 4, d: 5, b: 6}\n', conf,
+                   problem1=(3, 28), problem2=(3, 34))
+        self.check('---\n'
+                   'at: root\n'
+                   'multiple: times\n'
+                   'at: root\n', conf,
+                   problem=(4, 1))
+        self.check('---\n'
+                   'nested but OK:\n'
+                   '  a: {a: {a: 1}}\n'
+                   '  b:\n'
+                   '    b: 2\n'
+                   '    c: 3\n', conf)
+        self.check('---\n'
+                   'nested duplicates:\n'
+                   '  a: {a: 1, a: 1}\n'
+                   '  b:\n'
+                   '    c: 3\n'
+                   '    d: 4\n'
+                   '    d: 4\n'
+                   '  b: 2\n', conf,
+                   problem1=(3, 13), problem2=(7, 5), problem3=(8, 3))
+        self.check('---\n'
+                   'duplicates with many styles: 1\n'
+                   '"duplicates with many styles": 1\n'
+                   '\'duplicates with many styles\': 1\n'
+                   '? duplicates with many styles\n'
+                   ': 1\n'
+                   '? >-\n'
+                   '    duplicates with\n'
+                   '    many styles\n'
+                   ': 1\n', conf,
+                   problem1=(3, 1), problem2=(4, 1), problem3=(5, 3),
+                   problem4=(7, 3))
+
+    def test_key_tokens_in_flow_sequences(self):
+        conf = 'key-duplicates: {}'
+        self.check('---\n'
+                   '[\n'
+                   '  flow: sequence, with, key: value, mappings\n'
+                   ']\n', conf)

tests/rules/test_line_length.py

@@ -14,7 +14,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-from tests.rules.common import RuleTestCase
+from tests.common import RuleTestCase
 
 
 class LineLengthTestCase(RuleTestCase):
@@ -43,17 +43,17 @@ class LineLengthTestCase(RuleTestCase):
         self.check('---\n', conf)
         self.check(80 * 'a', conf)
         self.check('---\n' + 80 * 'a' + '\n', conf)
-        self.check(81 * 'a', conf, problem=(1, 81))
-        self.check('---\n' + 81 * 'a' + '\n', conf, problem=(2, 81))
-        self.check(1000 * 'b', conf, problem=(1, 81))
-        self.check('---\n' + 1000 * 'b' + '\n', conf, problem=(2, 81))
+        self.check(16 * 'aaaa ' + 'z', conf, problem=(1, 81))
+        self.check('---\n' + 16 * 'aaaa ' + 'z' + '\n', conf, problem=(2, 81))
+        self.check(1000 * 'word ' + 'end', conf, problem=(1, 81))
+        self.check('---\n' + 1000 * 'word ' + 'end\n', conf, problem=(2, 81))
 
     def test_max_length_10(self):
         conf = ('line-length: {max: 10}\n'
                 'new-line-at-end-of-file: disable\n')
-        self.check('---\nABCDEFGHIJ', conf)
-        self.check('---\nABCDEFGHIJK', conf, problem=(2, 11))
-        self.check('---\nABCDEFGHIJK\n', conf, problem=(2, 11))
+        self.check('---\nABCD EFGHI', conf)
+        self.check('---\nABCD EFGHIJ', conf, problem=(2, 11))
+        self.check('---\nABCD EFGHIJ\n', conf, problem=(2, 11))
 
     def test_spaces(self):
         conf = ('line-length: {max: 80}\n'
@@ -61,3 +61,36 @@ class LineLengthTestCase(RuleTestCase):
                 'trailing-spaces: disable\n')
         self.check('---\n' + 81 * ' ', conf, problem=(2, 81))
         self.check('---\n' + 81 * ' ' + '\n', conf, problem=(2, 81))
+
+    def test_non_breakable_word(self):
+        conf = 'line-length: {max: 20, allow-non-breakable-words: yes}'
+        self.check('---\n' + 30 * 'A' + '\n', conf)
+        self.check('---\n'
+                   'this:\n'
+                   '  is:\n'
+                   '    - a:\n'
+                   '        http://localhost/very/long/url\n'
+                   '...\n', conf)
+        self.check('---\n'
+                   'this:\n'
+                   '  is:\n'
+                   '    - a:\n'
+                   '        # http://localhost/very/long/url\n'
+                   '        comment\n'
+                   '...\n', conf)
+
+        conf = 'line-length: {max: 20, allow-non-breakable-words: no}'
+        self.check('---\n' + 30 * 'A' + '\n', conf, problem=(2, 21))
+        self.check('---\n'
+                   'this:\n'
+                   '  is:\n'
+                   '    - a:\n'
+                   '        http://localhost/very/long/url\n'
+                   '...\n', conf, problem=(5, 21))
+        self.check('---\n'
+                   'this:\n'
+                   '  is:\n'
+                   '    - a:\n'
+                   '        # http://localhost/very/long/url\n'
+                   '        comment\n'
+                   '...\n', conf, problem=(5, 21))

tests/rules/test_new_line_at_end_of_file.py

@@ -14,7 +14,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-from tests.rules.common import RuleTestCase
+from tests.common import RuleTestCase
 
 
 class NewLineAtEndOfFileTestCase(RuleTestCase):

tests/rules/test_new_lines.py

@@ -14,7 +14,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-from tests.rules.common import RuleTestCase
+from tests.common import RuleTestCase
 
 
 class NewLinesTestCase(RuleTestCase):

tests/rules/test_syntax_error.py

@@ -1,37 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright (C) 2016 Adrien Vergé
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-from tests.rules.common import RuleTestCase
-
-
-class YamlLintTestCase(RuleTestCase):
-    rule_id = None  # syntax error
-
-    def test_lint(self):
-        self.check('---\n'
-                   'this is not: valid: YAML\n', None, problem=(2, 19))
-        self.check('---\n'
-                   'this is: valid YAML\n'
-                   '\n'
-                   'this is an error: [\n'
-                   '\n'
-                   '...\n', None, problem=(6, 1))
-
-    def test_directives(self):
-        self.check('%YAML 1.2\n'
-                   '%TAG ! tag:clarkevans.com,2002:\n'
-                   'doc: ument\n'
-                   '...\n', None, problem=(3, 1))

tests/rules/test_trailing_spaces.py

@@ -14,7 +14,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-from tests.rules.common import RuleTestCase
+from tests.common import RuleTestCase
 
 
 class TrailingSpacesTestCase(RuleTestCase):
@@ -33,11 +33,11 @@ class TrailingSpacesTestCase(RuleTestCase):
         self.check('', conf)
         self.check('\n', conf)
         self.check('    \n', conf, problem=(1, 1))
-        self.check('\t\t\t\n', conf, problem=(1, 1))
+        self.check('\t\t\t\n', conf, problem=(1, 1, 'syntax'))
         self.check('---\n'
                    'some: text \n', conf, problem=(2, 11))
         self.check('---\n'
-                   'some: text\t\n', conf, problem=(2, 11))
+                   'some: text\t\n', conf, problem=(2, 11, 'syntax'))
 
     def test_with_dos_new_lines(self):
         conf = ('trailing-spaces: {}\n'

tests/test_config.py

@@ -0,0 +1,177 @@
+# -*- coding: utf-8 -*-
+# Copyright (C) 2016 Adrien Vergé
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import unittest
+
+from yamllint import config
+
+
+class SimpleConfigTestCase(unittest.TestCase):
+    def test_parse_config(self):
+        new = config.YamlLintConfig('rules:\n'
+                                    '  colons:\n'
+                                    '    max-spaces-before: 0\n'
+                                    '    max-spaces-after: 1\n')
+
+        self.assertEqual(list(new.rules.keys()), ['colons'])
+        self.assertEqual(new.rules['colons']['max-spaces-before'], 0)
+        self.assertEqual(new.rules['colons']['max-spaces-after'], 1)
+
+        self.assertEqual(len(new.enabled_rules()), 1)
+
+    def test_unknown_rule(self):
+        with self.assertRaisesRegexp(
+                config.YamlLintConfigError,
+                'invalid config: no such rule: "this-one-does-not-exist"'):
+            config.YamlLintConfig('rules:\n'
+                                  '  this-one-does-not-exist: {}\n')
+
+    def test_missing_option(self):
+        with self.assertRaisesRegexp(
+                config.YamlLintConfigError,
+                'invalid config: missing option "max-spaces-before" '
+                'for rule "colons"'):
+            config.YamlLintConfig('rules:\n'
+                                  '  colons:\n'
+                                  '    max-spaces-after: 1\n')
+
+    def test_unknown_option(self):
+        with self.assertRaisesRegexp(
+                config.YamlLintConfigError,
+                'invalid config: unknown option "abcdef" for rule "colons"'):
+            config.YamlLintConfig('rules:\n'
+                                  '  colons:\n'
+                                  '    max-spaces-before: 0\n'
+                                  '    max-spaces-after: 1\n'
+                                  '    abcdef: yes\n')
+
+
+class ExtendedConfigTestCase(unittest.TestCase):
+    def test_extend_add_rule(self):
+        old = config.YamlLintConfig('rules:\n'
+                                    '  colons:\n'
+                                    '    max-spaces-before: 0\n'
+                                    '    max-spaces-after: 1\n')
+        new = config.YamlLintConfig('rules:\n'
+                                    '  hyphens:\n'
+                                    '    max-spaces-after: 2\n')
+        new.extend(old)
+
+        self.assertEqual(sorted(new.rules.keys()), ['colons', 'hyphens'])
+        self.assertEqual(new.rules['colons']['max-spaces-before'], 0)
+        self.assertEqual(new.rules['colons']['max-spaces-after'], 1)
+        self.assertEqual(new.rules['hyphens']['max-spaces-after'], 2)
+
+        self.assertEqual(len(new.enabled_rules()), 2)
+
+    def test_extend_remove_rule(self):
+        old = config.YamlLintConfig('rules:\n'
+                                    '  colons:\n'
+                                    '    max-spaces-before: 0\n'
+                                    '    max-spaces-after: 1\n'
+                                    '  hyphens:\n'
+                                    '    max-spaces-after: 2\n')
+        new = config.YamlLintConfig('rules:\n'
+                                    '  colons: disable\n')
+        new.extend(old)
+
+        self.assertEqual(sorted(new.rules.keys()), ['colons', 'hyphens'])
+        self.assertEqual(new.rules['colons'], False)
+        self.assertEqual(new.rules['hyphens']['max-spaces-after'], 2)
+
+        self.assertEqual(len(new.enabled_rules()), 1)
+
+    def test_extend_edit_rule(self):
+        old = config.YamlLintConfig('rules:\n'
+                                    '  colons:\n'
+                                    '    max-spaces-before: 0\n'
+                                    '    max-spaces-after: 1\n'
+                                    '  hyphens:\n'
+                                    '    max-spaces-after: 2\n')
+        new = config.YamlLintConfig('rules:\n'
+                                    '  colons:\n'
+                                    '    max-spaces-before: 3\n'
+                                    '    max-spaces-after: 4\n')
+        new.extend(old)
+
+        self.assertEqual(sorted(new.rules.keys()), ['colons', 'hyphens'])
+        self.assertEqual(new.rules['colons']['max-spaces-before'], 3)
+        self.assertEqual(new.rules['colons']['max-spaces-after'], 4)
+        self.assertEqual(new.rules['hyphens']['max-spaces-after'], 2)
+
+        self.assertEqual(len(new.enabled_rules()), 2)
+
+    def test_extend_reenable_rule(self):
+        old = config.YamlLintConfig('rules:\n'
+                                    '  colons:\n'
+                                    '    max-spaces-before: 0\n'
+                                    '    max-spaces-after: 1\n'
+                                    '  hyphens: disable\n')
+        new = config.YamlLintConfig('rules:\n'
+                                    '  hyphens:\n'
+                                    '    max-spaces-after: 2\n')
+        new.extend(old)
+
+        self.assertEqual(sorted(new.rules.keys()), ['colons', 'hyphens'])
+        self.assertEqual(new.rules['colons']['max-spaces-before'], 0)
+        self.assertEqual(new.rules['colons']['max-spaces-after'], 1)
+        self.assertEqual(new.rules['hyphens']['max-spaces-after'], 2)
+
+        self.assertEqual(len(new.enabled_rules()), 2)
+
+
+class ExtendedLibraryConfigTestCase(unittest.TestCase):
+    def test_extend_config_disable_rule(self):
+        old = config.YamlLintConfig('extends: default')
+        new = config.YamlLintConfig('extends: default\n'
+                                    'rules:\n'
+                                    '  trailing-spaces: disable\n')
+
+        old.rules['trailing-spaces'] = False
+
+        self.assertEqual(sorted(new.rules.keys()), sorted(old.rules.keys()))
+        for rule in new.rules:
+            self.assertEqual(new.rules[rule], old.rules[rule])
+
+    def test_extend_config_override_whole_rule(self):
+        old = config.YamlLintConfig('extends: default')
+        new = config.YamlLintConfig('extends: default\n'
+                                    'rules:\n'
+                                    '  empty-lines:\n'
+                                    '    max: 42\n'
+                                    '    max-start: 43\n'
+                                    '    max-end: 44\n')
+
+        old.rules['empty-lines']['max'] = 42
+        old.rules['empty-lines']['max-start'] = 43
+        old.rules['empty-lines']['max-end'] = 44
+
+        self.assertEqual(sorted(new.rules.keys()), sorted(old.rules.keys()))
+        for rule in new.rules:
+            self.assertEqual(new.rules[rule], old.rules[rule])
+
+    def test_extend_config_override_rule_partly(self):
+        old = config.YamlLintConfig('extends: default')
+        new = config.YamlLintConfig('extends: default\n'
+                                    'rules:\n'
+                                    '  empty-lines:\n'
+                                    '    max-start: 42\n')
+
+        old.rules['empty-lines']['max-start'] = 42
+
+        self.assertEqual(sorted(new.rules.keys()), sorted(old.rules.keys()))
+        for rule in new.rules:
+            self.assertEqual(new.rules[rule], old.rules[rule])

tests/test_parser.py

@@ -65,8 +65,8 @@ class ParserTestCase(unittest.TestCase):
         e = list(token_generator(''))
         self.assertEqual(len(e), 2)
         self.assertEqual(e[0].prev, None)
-        self.assertTrue(isinstance(e[0].curr, yaml.Token))
-        self.assertTrue(isinstance(e[0].next, yaml.Token))
+        self.assertIsInstance(e[0].curr, yaml.Token)
+        self.assertIsInstance(e[0].next, yaml.Token)
         self.assertEqual(e[1].prev, e[0].curr)
         self.assertEqual(e[1].curr, e[0].next)
         self.assertEqual(e[1].next, None)
@@ -74,20 +74,20 @@ class ParserTestCase(unittest.TestCase):
         e = list(token_generator('---\n'
                                  'k: v\n'))
         self.assertEqual(len(e), 9)
-        self.assertTrue(isinstance(e[3].curr, yaml.KeyToken))
-        self.assertTrue(isinstance(e[5].curr, yaml.ValueToken))
+        self.assertIsInstance(e[3].curr, yaml.KeyToken)
+        self.assertIsInstance(e[5].curr, yaml.ValueToken)
 
     def test_token_or_line_generator(self):
         e = list(token_or_line_generator('---\n'
                                          'k: v\n'))
         self.assertEqual(len(e), 12)
-        self.assertTrue(isinstance(e[0], Token))
-        self.assertTrue(isinstance(e[0].curr, yaml.StreamStartToken))
-        self.assertTrue(isinstance(e[1], Token))
-        self.assertTrue(isinstance(e[1].curr, yaml.DocumentStartToken))
-        self.assertTrue(isinstance(e[2], Line))
-        self.assertTrue(isinstance(e[3].curr, yaml.BlockMappingStartToken))
-        self.assertTrue(isinstance(e[4].curr, yaml.KeyToken))
-        self.assertTrue(isinstance(e[6].curr, yaml.ValueToken))
-        self.assertTrue(isinstance(e[8], Line))
-        self.assertTrue(isinstance(e[11], Line))
+        self.assertIsInstance(e[0], Token)
+        self.assertIsInstance(e[0].curr, yaml.StreamStartToken)
+        self.assertIsInstance(e[1], Token)
+        self.assertIsInstance(e[1].curr, yaml.DocumentStartToken)
+        self.assertIsInstance(e[2], Line)
+        self.assertIsInstance(e[3].curr, yaml.BlockMappingStartToken)
+        self.assertIsInstance(e[4].curr, yaml.KeyToken)
+        self.assertIsInstance(e[6].curr, yaml.ValueToken)
+        self.assertIsInstance(e[8], Line)
+        self.assertIsInstance(e[11], Line)

tests/test_spec_examples.py

@@ -0,0 +1,186 @@
+# -*- coding: utf-8 -*-
+# Copyright (C) 2016 Adrien Vergé
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import os
+
+from tests.common import RuleTestCase
+
+
+# This file checks examples from YAML 1.2 specification [1] against yamllint.
+#
+# [1]: http://www.yaml.org/spec/1.2/spec.html
+#
+# Example files generated with:
+#
+#     from bs4 import BeautifulSoup
+#     with open('spec.html', encoding='iso-8859-1') as f:
+#         soup = BeautifulSoup(f, 'lxml')
+#         for ex in soup.find_all('div', class_='example'):
+#             title = ex.find('p', class_='title').find('b').get_text()
+#             id = '-'.join(title.split('\xa0')[:2])[:-1].lower()
+#             span = ex.find('span', class_='database')
+#             for br in span.find_all("br"):
+#                 br.replace_with("\n")
+#             text = text.replace('\u2193', '')    # downwards arrow
+#             text = text.replace('\u00b7', ' ')   # visible space
+#             text = text.replace('\u21d4', '')    # byte order mark
+#             text = text.replace('\u2192', '\t')  # right arrow
+#             text = text.replace('\u00b0', '')    # empty scalar
+#             with open('tests/yaml-1.2-spec-examples/%s' % id, 'w',
+#                       encoding='utf-8') as g:
+#                 g.write(text)
+
+class SpecificationTestCase(RuleTestCase):
+    rule_id = None
+
+conf_general = ('document-start: disable\n'
+                'comments: {min-spaces-from-content: 1}\n'
+                'braces: {min-spaces-inside: 1, max-spaces-inside: 1}\n'
+                'brackets: {min-spaces-inside: 1, max-spaces-inside: 1}\n')
+conf_overrides = {
+    'example-2.2': ('colons: {max-spaces-after: 2}\n'),
+    'example-2.4': ('colons: {max-spaces-after: 3}\n'),
+    'example-2.5': ('empty-lines: {max-end: 2}\n'
+                    'brackets: {min-spaces-inside: 0, max-spaces-inside: 2}\n'
+                    'commas: {max-spaces-before: -1}\n'),
+    'example-2.6': ('braces: {min-spaces-inside: 0, max-spaces-inside: 0}\n'
+                    'indentation: disable\n'),
+    'example-2.12': ('empty-lines: {max-end: 1}\n'
+                     'colons: {max-spaces-before: -1}\n'),
+    'example-2.16': ('empty-lines: {max-end: 1}\n'),
+    'example-2.18': ('empty-lines: {max-end: 1}\n'),
+    'example-2.19': ('empty-lines: {max-end: 1}\n'),
+    'example-2.28': ('empty-lines: {max-end: 3}\n'),
+    'example-5.3': ('indentation: {indent-sequences: no}\n'
+                    'colons: {max-spaces-before: 1}\n'),
+    'example-6.4': ('trailing-spaces: disable\n'),
+    'example-6.5': ('trailing-spaces: disable\n'),
+    'example-6.6': ('trailing-spaces: disable\n'),
+    'example-6.7': ('trailing-spaces: disable\n'),
+    'example-6.8': ('trailing-spaces: disable\n'),
+    'example-6.10': ('empty-lines: {max-end: 2}\n'
+                     'trailing-spaces: disable\n'
+                     'comments-indentation: disable\n'),
+    'example-6.11': ('empty-lines: {max-end: 1}\n'
+                     'comments-indentation: disable\n'),
+    'example-6.13': ('comments-indentation: disable\n'),
+    'example-6.14': ('comments-indentation: disable\n'),
+    'example-6.23': ('colons: {max-spaces-before: 1}\n'),
+    'example-7.4': ('colons: {max-spaces-before: 1}\n'
+                    'indentation: disable\n'),
+    'example-7.5': ('trailing-spaces: disable\n'),
+    'example-7.6': ('trailing-spaces: disable\n'),
+    'example-7.7': ('indentation: disable\n'),
+    'example-7.8': ('colons: {max-spaces-before: 1}\n'
+                    'indentation: disable\n'),
+    'example-7.9': ('trailing-spaces: disable\n'),
+    'example-7.11': ('colons: {max-spaces-before: 1}\n'
+                     'indentation: disable\n'),
+    'example-7.13': ('brackets: {min-spaces-inside: 0, max-spaces-inside: 1}\n'
+                     'commas: {max-spaces-before: 1, min-spaces-after: 0}\n'),
+    'example-7.14': ('indentation: disable\n'),
+    'example-7.15': ('braces: {min-spaces-inside: 0, max-spaces-inside: 1}\n'
+                     'commas: {max-spaces-before: 1, min-spaces-after: 0}\n'
+                     'colons: {max-spaces-before: 1}\n'),
+    'example-7.17': ('indentation: disable\n'),
+    'example-7.18': ('indentation: disable\n'),
+    'example-7.19': ('indentation: disable\n'),
+    'example-7.20': ('colons: {max-spaces-before: 1}\n'
+                     'indentation: disable\n'),
+    'example-8.1': ('empty-lines: {max-end: 1}\n'),
+    'example-8.2': ('trailing-spaces: disable\n'),
+    'example-8.5': ('comments-indentation: disable\n'
+                    'trailing-spaces: disable\n'),
+    'example-8.6': ('empty-lines: {max-end: 1}\n'),
+    'example-8.7': ('empty-lines: {max-end: 1}\n'),
+    'example-8.8': ('trailing-spaces: disable\n'),
+    'example-8.9': ('empty-lines: {max-end: 1}\n'),
+    'example-8.14': ('colons: {max-spaces-before: 1}\n'),
+    'example-8.16': ('indentation: {spaces: 1}\n'),
+    'example-8.17': ('indentation: disable\n'),
+}
+
+files = os.listdir('tests/yaml-1.2-spec-examples')
+assert len(files) == 132
+
+
+def _gen_test(buffer, conf):
+    def test(self):
+        self.check(buffer, conf)
+    return test
+
+# TODO
+# The following tests are blacklisted because they contain rarely-used formats
+# that yamllint does not handle yet.
+tmp_blacklist = (
+    'example-7.16',
+    'example-8.20',
+    'example-8.22',
+    'example-10.1',
+)
+# The following tests are blacklisted (i.e. will not be checked against
+# yamllint), because pyyaml is currently not able to parse the contents
+# (using yaml.parse()).
+pyyaml_blacklist = (
+    'example-2.11',
+    'example-2.23',
+    'example-2.24',
+    'example-2.27',
+    'example-5.10',
+    'example-5.12',
+    'example-5.13',
+    'example-5.14',
+    'example-5.6',
+    'example-6.1',
+    'example-6.12',
+    'example-6.15',
+    'example-6.17',
+    'example-6.18',
+    'example-6.19',
+    'example-6.2',
+    'example-6.20',
+    'example-6.21',
+    'example-6.22',
+    'example-6.24',
+    'example-6.25',
+    'example-6.26',
+    'example-6.27',
+    'example-6.3',
+    'example-7.1',
+    'example-7.10',
+    'example-7.12',
+    'example-7.17',
+    'example-7.2',
+    'example-7.21',
+    'example-7.22',
+    'example-7.3',
+    'example-8.18',
+    'example-8.19',
+    'example-8.21',
+    'example-8.3',
+    'example-9.3',
+    'example-9.4',
+    'example-9.5',
+)
+
+for file in files:
+    if file in tmp_blacklist or file in pyyaml_blacklist:
+        continue
+
+    with open('tests/yaml-1.2-spec-examples/' + file) as f:
+        conf = conf_general + conf_overrides.get(file, '')
+        setattr(SpecificationTestCase, 'test_' + file,
+                _gen_test(f.read(), conf))

tests/test_syntax_errors.py

@@ -0,0 +1,94 @@
+# -*- coding: utf-8 -*-
+# Copyright (C) 2016 Adrien Vergé
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from tests.common import RuleTestCase
+
+
+class YamlLintTestCase(RuleTestCase):
+    rule_id = None  # syntax error
+
+    def test_syntax_errors(self):
+        self.check('---\n'
+                   'this is not: valid: YAML\n', None, problem=(2, 19))
+        self.check('---\n'
+                   'this is: valid YAML\n'
+                   '\n'
+                   'this is an error: [\n'
+                   '\n'
+                   '...\n', None, problem=(6, 1))
+        self.check('%YAML 1.2\n'
+                   '%TAG ! tag:clarkevans.com,2002:\n'
+                   'doc: ument\n'
+                   '...\n', None, problem=(3, 1))
+
+    def test_empty_flows(self):
+        self.check('---\n'
+                   '- []\n'
+                   '- {}\n'
+                   '- [\n'
+                   ']\n'
+                   '- {\n'
+                   '}\n'
+                   '...\n', None)
+
+    def test_explicit_mapping(self):
+        self.check('---\n'
+                   '? key\n'
+                   ': - value 1\n'
+                   '  - value 2\n'
+                   '...\n', None)
+        self.check('---\n'
+                   '?\n'
+                   '  key\n'
+                   ': {a: 1}\n'
+                   '...\n', None)
+        self.check('---\n'
+                   '?\n'
+                   '  key\n'
+                   ':\n'
+                   '  val\n'
+                   '...\n', None)
+
+    def test_mapping_between_sequences(self):
+        # This is valid YAML. See http://www.yaml.org/spec/1.2/spec.html,
+        # example 2.11
+        self.check('---\n'
+                   '? - Detroit Tigers\n'
+                   '  - Chicago cubs\n'
+                   ':\n'
+                   '  - 2001-07-23\n'
+                   '\n'
+                   '? [New York Yankees,\n'
+                   '   Atlanta Braves]\n'
+                   ': [2001-07-02, 2001-08-12,\n'
+                   '   2001-08-14]\n', None)
+
+    def test_sets(self):
+        self.check('---\n'
+                   '? key one\n'
+                   '? key two\n'
+                   '? [non, scalar, key]\n'
+                   '? key with value\n'
+                   ': value\n'
+                   '...\n', None)
+        self.check('---\n'
+                   '? - multi\n'
+                   '  - line\n'
+                   '  - keys\n'
+                   '? in:\n'
+                   '    a:\n'
+                   '      set\n'
+                   '...\n', None)

tests/yaml-1.2-spec-examples/example-10.1

@@ -0,0 +1,6 @@
+Block style: !!map
+  Clark : Evans
+  Ingy  : döt Net
+  Oren  : Ben-Kiki
+
+Flow style: !!map { Clark: Evans, Ingy: döt Net, Oren: Ben-Kiki }

tests/yaml-1.2-spec-examples/example-10.2

@@ -0,0 +1,6 @@
+Block style: !!seq
+- Clark Evans
+- Ingy döt Net
+- Oren Ben-Kiki
+
+Flow style: !!seq [ Clark Evans, Ingy döt Net, Oren Ben-Kiki ]

tests/yaml-1.2-spec-examples/example-10.3

@@ -0,0 +1,4 @@
+Block style: !!str |-
+  String: just a theory.
+
+Flow style: !!str "String: just a theory."

tests/yaml-1.2-spec-examples/example-10.4

@@ -0,0 +1,2 @@
+!!null null: value for null key
+key with null value: !!null null

tests/yaml-1.2-spec-examples/example-10.5

@@ -0,0 +1,2 @@
+YAML is a superset of JSON: !!bool true
+Pluto is a planet: !!bool false

tests/yaml-1.2-spec-examples/example-10.6

@@ -0,0 +1,3 @@
+negative: !!int -12
+zero: !!int 0
+positive: !!int 34

tests/yaml-1.2-spec-examples/example-10.7

@@ -0,0 +1,5 @@
+negative: !!float -1
+zero: !!float 0
+positive: !!float 2.3e4
+infinity: !!float .inf
+not a number: !!float .nan

tests/yaml-1.2-spec-examples/example-10.8

@@ -0,0 +1,5 @@
+A null: null
+Booleans: [ true, false ]
+Integers: [ 0, -0, 3, -19 ]
+Floats: [ 0., -0.0, 12e03, -2E+05 ]
+Invalid: [ True, Null, 0o7, 0x3A, +12.3 ]

tests/yaml-1.2-spec-examples/example-10.9

@@ -0,0 +1,7 @@
+A null: null
+Also a null: # Empty
+Not a null: ""
+Booleans: [ true, True, false, FALSE ]
+Integers: [ 0, 0o7, 0x3A, -19 ]
+Floats: [ 0., -0.0, .5, +12e03, -2E+05 ]
+Also floats: [ .inf, -.Inf, +.INF, .NAN ]

tests/yaml-1.2-spec-examples/example-2.1

@@ -0,0 +1,3 @@
+- Mark McGwire
+- Sammy Sosa
+- Ken Griffey

tests/yaml-1.2-spec-examples/example-2.10

@@ -0,0 +1,8 @@
+---
+hr:
+  - Mark McGwire
+  # Following node labeled SS
+  - &SS Sammy Sosa
+rbi:
+  - *SS # Subsequent occurrence
+  - Ken Griffey

tests/yaml-1.2-spec-examples/example-2.11

@@ -0,0 +1,9 @@
+? - Detroit Tigers
+  - Chicago cubs
+:
+  - 2001-07-23
+
+? [ New York Yankees,
+    Atlanta Braves ]
+: [ 2001-07-02, 2001-08-12,
+    2001-08-14 ]

tests/yaml-1.2-spec-examples/example-2.12

@@ -0,0 +1,9 @@
+---
+# Products purchased
+- item    : Super Hoop
+  quantity: 1
+- item    : Basketball
+  quantity: 4
+- item    : Big Shoes
+  quantity: 1
+

tests/yaml-1.2-spec-examples/example-2.13

@@ -0,0 +1,4 @@
+# ASCII Art
+--- |
+  \//||\/||
+  // ||  ||__

tests/yaml-1.2-spec-examples/example-2.14

@@ -0,0 +1,4 @@
+--- >
+  Mark McGwire's
+  year was crippled
+  by a knee injury.

tests/yaml-1.2-spec-examples/example-2.15

@@ -0,0 +1,8 @@
+>
+ Sammy Sosa completed another
+ fine season with great stats.
+
+   63 Home Runs
+   0.288 Batting Average
+
+ What a year!

tests/yaml-1.2-spec-examples/example-2.16

@@ -0,0 +1,8 @@
+name: Mark McGwire
+accomplishment: >
+  Mark set a major league
+  home run record in 1998.
+stats: |
+  65 Home Runs
+  0.278 Batting Average
+

tests/yaml-1.2-spec-examples/example-2.17

@@ -0,0 +1,7 @@
+unicode: "Sosa did fine.\u263A"
+control: "\b1998\t1999\t2000\n"
+hex esc: "\x0d\x0a is \r\n"
+
+single: '"Howdy!" he cried.'
+quoted: ' # Not a ''comment''.'
+tie-fighter: '|\-*-/|'

tests/yaml-1.2-spec-examples/example-2.18

@@ -0,0 +1,7 @@
+plain:
+  This unquoted scalar
+  spans many lines.
+
+quoted: "So does this
+  quoted scalar.\n"
+

tests/yaml-1.2-spec-examples/example-2.19

@@ -0,0 +1,5 @@
+canonical: 12345
+decimal: +12345
+octal: 0o14
+hexadecimal: 0xC
+

tests/yaml-1.2-spec-examples/example-2.2

@@ -0,0 +1,3 @@
+hr:  65    # Home runs
+avg: 0.278 # Batting average
+rbi: 147   # Runs Batted In

tests/yaml-1.2-spec-examples/example-2.20

@@ -0,0 +1,5 @@
+canonical: 1.23015e+3
+exponential: 12.3015e+02
+fixed: 1230.15
+negative infinity: -.inf
+not a number: .NaN

tests/yaml-1.2-spec-examples/example-2.21

@@ -0,0 +1,3 @@
+null:
+booleans: [ true, false ]
+string: '012345'

tests/yaml-1.2-spec-examples/example-2.22

@@ -0,0 +1,4 @@
+canonical: 2001-12-15T02:59:43.1Z
+iso8601: 2001-12-14t21:59:43.10-05:00
+spaced: 2001-12-14 21:59:43.10 -5
+date: 2002-12-14

tests/yaml-1.2-spec-examples/example-2.23

@@ -0,0 +1,14 @@
+---
+not-date: !!str 2002-04-28
+
+picture: !!binary |
+ R0lGODlhDAAMAIQAAP//9/X
+ 17unp5WZmZgAAAOfn515eXv
+ Pz7Y6OjuDg4J+fn5OTk6enp
+ 56enmleECcgggoBADs=
+
+application specific tag: !something |
+ The semantics of the tag
+ above may be different for
+ different documents.
+

tests/yaml-1.2-spec-examples/example-2.24

@@ -0,0 +1,14 @@
+%TAG ! tag:clarkevans.com,2002:
+--- !shape
+  # Use the ! handle for presenting
+  # tag:clarkevans.com,2002:circle
+- !circle
+  center: &ORIGIN {x: 73, y: 129}
+  radius: 7
+- !line
+  start: *ORIGIN
+  finish: { x: 89, y: 102 }
+- !label
+  start: *ORIGIN
+  color: 0xFFEEBB
+  text: Pretty vector drawing.

tests/yaml-1.2-spec-examples/example-2.25

@@ -0,0 +1,7 @@
+# Sets are represented as a
+# Mapping where each key is
+# associated with a null value
+--- !!set
+? Mark McGwire
+? Sammy Sosa
+? Ken Griff

tests/yaml-1.2-spec-examples/example-2.26

@@ -0,0 +1,7 @@
+# Ordered maps are represented as
+# A sequence of mappings, with
+# each mapping having one key
+--- !!omap
+- Mark McGwire: 65
+- Sammy Sosa: 63
+- Ken Griffy: 58

tests/yaml-1.2-spec-examples/example-2.27

@@ -0,0 +1,29 @@
+--- !<tag:clarkevans.com,2002:invoice>
+invoice: 34843
+date   : 2001-01-23
+bill-to: &id001
+    given  : Chris
+    family : Dumars
+    address:
+        lines: |
+            458 Walkman Dr.
+            Suite #292
+        city    : Royal Oak
+        state   : MI
+        postal  : 48046
+ship-to: *id001
+product:
+    - sku         : BL394D
+      quantity    : 4
+      description : Basketball
+      price       : 450.00
+    - sku         : BL4438H
+      quantity    : 1
+      description : Super Hoop
+      price       : 2392.00
+tax  : 251.42
+total: 4443.52
+comments:
+    Late afternoon is best.
+    Backup contact is Nancy
+    Billsmer @ 338-4338.

tests/yaml-1.2-spec-examples/example-2.28

@@ -0,0 +1,29 @@
+---
+Time: 2001-11-23 15:01:42 -5
+User: ed
+Warning:
+  This is an error message
+  for the log file
+---
+Time: 2001-11-23 15:02:31 -5
+User: ed
+Warning:
+  A slightly different error
+  message.
+---
+Date: 2001-11-23 15:03:17 -5
+User: ed
+Fatal:
+  Unknown variable "bar"
+Stack:
+  - file: TopClass.py
+    line: 23
+    code: |
+      x = MoreObject("345\n")
+  - file: MoreClass.py
+    line: 58
+    code: |-
+      foo = bar
+
+
+

tests/yaml-1.2-spec-examples/example-2.3

@@ -0,0 +1,8 @@
+american:
+  - Boston Red Sox
+  - Detroit Tigers
+  - New York Yankees
+national:
+  - New York Mets
+  - Chicago Cubs
+  - Atlanta Braves

tests/yaml-1.2-spec-examples/example-2.4

@@ -0,0 +1,8 @@
+-
+  name: Mark McGwire
+  hr:   65
+  avg:  0.278
+-
+  name: Sammy Sosa
+  hr:   63
+  avg:  0.288

tests/yaml-1.2-spec-examples/example-2.5

@@ -0,0 +1,5 @@
+- [name        , hr, avg  ]
+- [Mark McGwire, 65, 0.278]
+- [Sammy Sosa  , 63, 0.288]
+
+

tests/yaml-1.2-spec-examples/example-2.6

@@ -0,0 +1,5 @@
+Mark McGwire: {hr: 65, avg: 0.278}
+Sammy Sosa: {
+    hr: 63,
+    avg: 0.288
+  }

tests/yaml-1.2-spec-examples/example-2.7

@@ -0,0 +1,10 @@
+# Ranking of 1998 home runs
+---
+- Mark McGwire
+- Sammy Sosa
+- Ken Griffey
+
+# Team ranking
+---
+- Chicago Cubs
+- St Louis Cardinals

tests/yaml-1.2-spec-examples/example-2.8

@@ -0,0 +1,10 @@
+---
+time: 20:03:20
+player: Sammy Sosa
+action: strike (miss)
+...
+---
+time: 20:03:47
+player: Sammy Sosa
+action: grand slam
+...

tests/yaml-1.2-spec-examples/example-2.9

@@ -0,0 +1,8 @@
+---
+hr: # 1998 hr ranking
+  - Mark McGwire
+  - Sammy Sosa
+rbi:
+  # 1998 rbi ranking
+  - Sammy Sosa
+  - Ken Griffey

tests/yaml-1.2-spec-examples/example-5.1

@@ -0,0 +1 @@
+# Comment only.

tests/yaml-1.2-spec-examples/example-5.10

@@ -0,0 +1,2 @@
+commercial-at: @text
+grave-accent: `text

tests/yaml-1.2-spec-examples/example-5.11

@@ -0,0 +1,3 @@
+|
+  Line break (no glyph)
+  Line break (glyphed)

tests/yaml-1.2-spec-examples/example-5.12

@@ -0,0 +1,6 @@
+# Tabs and spaces
+quoted: "Quoted 	"
+block:	|
+  void main() {
+  	printf("Hello, world!\n");
+  }

tests/yaml-1.2-spec-examples/example-5.13

@@ -0,0 +1,5 @@
+"Fun with \\
+\" \a \b \e \f \
+\n \r \t \v \0 \
+\  \_ \N \L \P \
+\x41 \u0041 \U00000041"

tests/yaml-1.2-spec-examples/example-5.14

@@ -0,0 +1,3 @@
+Bad escapes:
+  "\c
+  \xq-"

tests/yaml-1.2-spec-examples/example-5.2

@@ -0,0 +1,3 @@
+- Invalid use of BOM
+
+- Inside a document.

tests/yaml-1.2-spec-examples/example-5.3

@@ -0,0 +1,7 @@
+sequence:
+- one
+- two
+mapping:
+  ? sky
+  : blue
+  sea : green

tests/yaml-1.2-spec-examples/example-5.4

@@ -0,0 +1,2 @@
+sequence: [ one, two, ]
+mapping: { sky: blue, sea: green }

tests/yaml-1.2-spec-examples/example-5.5

@@ -0,0 +1 @@
+# Comment only.

tests/yaml-1.2-spec-examples/example-5.6

@@ -0,0 +1,2 @@
+anchored: !local &anchor value
+alias: *anchor

tests/yaml-1.2-spec-examples/example-5.7

@@ -0,0 +1,6 @@
+literal: |
+  some
+  text
+folded: >
+  some
+  text

tests/yaml-1.2-spec-examples/example-5.8

@@ -0,0 +1,2 @@
+single: 'text'
+double: "text"

tests/yaml-1.2-spec-examples/example-5.9

@@ -0,0 +1,2 @@
+%YAML 1.2
+--- text

tests/yaml-1.2-spec-examples/example-6.1

@@ -0,0 +1,12 @@
+  # Leading comment line spaces are
+   # neither content nor indentation.
+    
+Not indented:
+ By one space: |
+    By four
+      spaces
+ Flow style: [    # Leading spaces
+   By two,        # in flow style
+  Also by two,    # are neither
+  	Still by two   # content nor
+    ]             # indentation.

tests/yaml-1.2-spec-examples/example-6.10

@@ -0,0 +1,3 @@
+  # Comment
+   
+

tests/yaml-1.2-spec-examples/example-6.11

@@ -0,0 +1,4 @@
+key:    # Comment
+        # lines
+  value
+

tests/yaml-1.2-spec-examples/example-6.12

@@ -0,0 +1,6 @@
+{ first: Sammy, last: Sosa }:
+# Statistics:
+  hr:  # Home runs
+     65
+  avg: # Average
+   0.278

tests/yaml-1.2-spec-examples/example-6.13

@@ -0,0 +1,3 @@
+%FOO  bar baz # Should be ignored
+               # with a warning.
+--- "foo"

tests/yaml-1.2-spec-examples/example-6.14

@@ -0,0 +1,4 @@
+%YAML 1.3 # Attempt parsing
+           # with a warning
+---
+"foo"

tests/yaml-1.2-spec-examples/example-6.15

@@ -0,0 +1,3 @@
+%YAML 1.2
+%YAML 1.1
+foo

tests/yaml-1.2-spec-examples/example-6.16

@@ -0,0 +1,3 @@
+%TAG !yaml! tag:yaml.org,2002:
+---
+!yaml!str "foo"

tests/yaml-1.2-spec-examples/example-6.17

@@ -0,0 +1,3 @@
+%TAG ! !foo
+%TAG ! !foo
+bar

tests/yaml-1.2-spec-examples/example-6.18

@@ -0,0 +1,7 @@
+# Private
+!foo "bar"
+...
+# Global
+%TAG ! tag:example.com,2000:app/
+---
+!foo "bar"

tests/yaml-1.2-spec-examples/example-6.19

@@ -0,0 +1,3 @@
+%TAG !! tag:example.com,2000:app/
+---
+!!int 1 - 3 # Interval, not integer

tests/yaml-1.2-spec-examples/example-6.2

@@ -0,0 +1,4 @@
+? a
+: -	b
+  -  -	c
+     - d