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key-duplicates: Handle merge keys (<<)

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Merge keys are described here: http://yaml.org/type/merge.html
They shouldn't be considered as duplicated keys.

Fixes https://github.com/adrienverge/yamllint/issues/88
This commit is contained in:
Nick Burke
2017-12-07 14:00:52 -08:00
committed by Adrien Vergé
parent 6a842229fd
commit 1b379628d7
2 changed files with 21 additions and 1 deletions
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18
tests/rules/test_key_duplicates.py
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@@ -78,6 +78,15 @@ class KeyDuplicatesTestCase(RuleTestCase):
' duplicates with\n'
' many styles\n'
': 1\n', conf)
self.check('---\n'
'Merge Keys are OK:\n'
'anchor_one: &anchor_one\n'
' one: one\n'
'anchor_two: &anchor_two\n'
' two: two\n'
'anchor_reference:\n'
' <<: *anchor_one\n'
' <<: *anchor_two\n', conf)
def test_enabled(self):
conf = 'key-duplicates: enable'
@@ -147,6 +156,15 @@ class KeyDuplicatesTestCase(RuleTestCase):
': 1\n', conf,
problem1=(3, 1), problem2=(4, 1), problem3=(5, 3),
problem4=(7, 3))
self.check('---\n'
'Merge Keys are OK:\n'
'anchor_one: &anchor_one\n'
' one: one\n'
'anchor_two: &anchor_two\n'
' two: two\n'
'anchor_reference:\n'
' <<: *anchor_one\n'
' <<: *anchor_two\n', conf)
def test_key_tokens_in_flow_sequences(self):
conf = 'key-duplicates: enable'