def test_str(self):
"""
The string representation is readable and shows which matchers have
been matched and which are still to be matched.
"""
matcher = OrderedLinesMatcher(EqualsMatcher('foo'),
RegexMatcher('^bar'))
self.assertEqual(
str(matcher), 'OrderedLinesMatcher(matched=[], '
"unmatched=[EqualsMatcher('foo'), RegexMatcher('^bar')])")
self.assertEqual(repr(matcher), str(matcher))
self.assertFalse(matcher('foo'))
self.assertEqual(
str(matcher),
"OrderedLinesMatcher(matched=[EqualsMatcher('foo')], "
"unmatched=[RegexMatcher('^bar')])")
self.assertEqual(repr(matcher), str(matcher))
self.assertTrue(matcher('barfoo'))
self.assertEqual(
str(matcher), "OrderedLinesMatcher(matched=[EqualsMatcher('foo'), "
"RegexMatcher('^bar')], unmatched=[])")
self.assertEqual(repr(matcher), str(matcher))
def test_by_regex(self):
"""
The ``by_regex`` utility method takes a list of patterns and produces a
matcher that matches by those regex patterns sequentially.
"""
matcher = OrderedLinesMatcher.by_regex(r'^foo', r'bar$')
self.assertFalse(matcher('fuzzbar'))
self.assertFalse(matcher('foobar'))
self.assertFalse(matcher('baz'))
self.assertTrue(matcher('foobar'))
def test_by_equality(self):
"""
The ``by_equality`` utility method takes a list of strings and produces
a matcher that matches those strings by equality sequentially.
"""
matcher = OrderedLinesMatcher.by_equality('foo', 'bar')
self.assertFalse(matcher('bar'))
self.assertFalse(matcher('foo'))
self.assertFalse(matcher('baz'))
self.assertTrue(matcher('bar'))
def test_matching(self):
"""
Applies each matcher sequentially and returns True on the final match.
"""
matcher = OrderedLinesMatcher(EqualsMatcher('foo'),
RegexMatcher('^bar'))
self.assertFalse(matcher('barfoo'))
self.assertFalse(matcher('foo'))
self.assertFalse(matcher('baz'))
self.assertTrue(matcher('barfoo'))
def test_exhaustion(self):
"""
Once all matchers have been matched, further calls to ``match`` should
raise an error.
"""
matcher = OrderedLinesMatcher.by_equality('foo')
self.assertTrue(matcher('foo'))
with self.assertRaises(RuntimeError) as cm:
matcher('bar')
self.assertEqual(str(cm.exception),
'Matcher exhausted, no more matchers to use')