Upgrade unit tests to use more useful asserts

tests/test_config.py

@@ -78,7 +78,7 @@ class SimpleConfigTestCase(unittest.TestCase):
                                   '    spaces: 2\n'
                                   '    indent-sequences: true\n'
                                   '    check-multi-line-strings: false\n')
-        self.assertEqual(c.rules['indentation']['indent-sequences'], True)
+        self.assertTrue(c.rules['indentation']['indent-sequences'])
         self.assertEqual(c.rules['indentation']['check-multi-line-strings'],
                          False)
 
@@ -87,7 +87,7 @@ class SimpleConfigTestCase(unittest.TestCase):
                                   '    spaces: 2\n'
                                   '    indent-sequences: yes\n'
                                   '    check-multi-line-strings: false\n')
-        self.assertEqual(c.rules['indentation']['indent-sequences'], True)
+        self.assertTrue(c.rules['indentation']['indent-sequences'])
         self.assertEqual(c.rules['indentation']['check-multi-line-strings'],
                          False)
 
@@ -115,8 +115,8 @@ class SimpleConfigTestCase(unittest.TestCase):
         class Rule(object):
             ID = 'fake'
 
-        self.assertEqual(config.validate_rule_conf(Rule, False), False)
+        self.assertFalse(config.validate_rule_conf(Rule, False))
-        self.assertEqual(config.validate_rule_conf(Rule, 'disable'), False)
+        self.assertFalse(config.validate_rule_conf(Rule, 'disable'))
 
         self.assertEqual(config.validate_rule_conf(Rule, {}),
                          {'level': 'error'})
@@ -194,7 +194,7 @@ class ExtendedConfigTestCase(unittest.TestCase):
         new.extend(old)
 
         self.assertEqual(sorted(new.rules.keys()), ['colons', 'hyphens'])
-        self.assertEqual(new.rules['colons'], False)
+        self.assertFalse(new.rules['colons'])
         self.assertEqual(new.rules['hyphens']['max-spaces-after'], 2)
 
         self.assertEqual(len(new.enabled_rules(None)), 1)

tests/test_parser.py

@@ -65,12 +65,12 @@ class ParserTestCase(unittest.TestCase):
     def test_token_or_comment_generator(self):
         e = list(token_or_comment_generator(''))
         self.assertEqual(len(e), 2)
-        self.assertEqual(e[0].prev, None)
+        self.assertIsNone(e[0].prev)
         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)
+        self.assertIsNone(e[1].next)
 
         e = list(token_or_comment_generator('---\n'
                                             'k: v\n'))