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from __future__ import absolute_import |
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from hamcrest.library.collection.is_empty import * |
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from hamcrest_unit_test.matcher_test import MatcherTest |
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from .sequencemixin import GeneratorForm, SequenceForm |
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__author__ = "Chris Rose" |
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__copyright__ = "Copyright 2012 hamcrest.org" |
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__license__ = "BSD, see License.txt" |
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class LengthHaver(object): |
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def __init__(self, len_): |
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self._len = len_ |
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def __len__(self): |
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return self._len |
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class EmptyCollectionTest(MatcherTest): |
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def testReturnsTrueForEmptyStandardCollections(self): |
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matcher = empty() |
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self.assert_matches('empty tuple', matcher, ()) |
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self.assert_matches('empty list', matcher, []) |
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self.assert_matches('emtpy dictionary', matcher, {}) |
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def testReturnsTrueForEmptyCollectionLike(self): |
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matcher = empty() |
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self.assert_matches('empty protocol object', matcher, LengthHaver(0)) |
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def testReturnsFalseForNonEmptyStandardCollections(self): |
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matcher = empty() |
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self.assert_does_not_match('non-empty tuple', matcher, (1,)) |
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self.assert_does_not_match('non-empty list', matcher, [1]) |
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self.assert_does_not_match('emtpy dictionary', matcher, {1:2}) |
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def testReturnsFalseForNonEmptyCollectionLike(self): |
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matcher = empty() |
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self.assert_does_not_match('non-empty protocol object', matcher, LengthHaver(1)) |
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def testHasReadableDescription(self): |
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self.assert_description("an empty collection", empty()) |
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def testSuccessfulMatchDoesNotGenerateMismatchDescription(self): |
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self.assert_no_mismatch_description(empty(), []) |
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def testDescribeMismatch(self): |
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self.assert_mismatch_description("has 3 item(s)", empty(), [1,2,3]) |
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self.assert_mismatch_description("does not support length", empty(), 1) |
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hamcrest /
PyHamcrest
