def test_string(self):
self.assertEqual(
base_matchers.HasItem(1, base_matchers.Bind('a')).match(
_FAKE_CONTEXT, 'xy'),
matcher.MatchInfo(
match.StringMatch('xy'),
{'a': matcher.BoundValue(match.StringMatch('y'))}))
def test_negative_index(self):
container = ['xyz']
self.assertEqual(
base_matchers.HasItem(-1, base_matchers.Bind('a')).match(
_FAKE_CONTEXT, container),
matcher.MatchInfo(
match.ObjectMatch(container),
{'a': matcher.BoundValue(match.StringMatch('xyz'))}))
def test_simple(self):
for nonempty_container in (('x', 'y'), ['x', 'y'], {1: 'y'}):
with self.subTest(nonempty_container=nonempty_container):
self.assertEqual(
base_matchers.HasItem(1, base_matchers.Bind('a')).match(
_FAKE_CONTEXT, nonempty_container),
matcher.MatchInfo(
match.ObjectMatch(nonempty_container),
{'a': matcher.BoundValue(match.StringMatch('y'))}))
def test_wrongtype(self):
m = base_matchers.HasItem(0, base_matchers.Anything())
self.assertIsNone(m.match(_FAKE_CONTEXT, object()))
def test_submatch_rejects(self):
self.assertIsNone(
base_matchers.HasItem(
-1, base_matchers.Unless(base_matchers.Anything())).match(
_FAKE_CONTEXT, ['xyz']))
def test_has_no_item(self):
for empty_container in ((), [], {}, ''):
with self.subTest(empty_container=empty_container):
self.assertIsNone(
base_matchers.HasItem(0).match(_FAKE_CONTEXT,
empty_container))