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49 lines
1.2 KiB
Python
49 lines
1.2 KiB
Python
from copy import copy, deepcopy
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from pickle import loads, dumps
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from unittest import TestCase
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from weakref import ref
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from zipline.utils.sentinel import sentinel
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class SentinelTestCase(TestCase):
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def tearDown(self):
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sentinel._cache.clear() # don't pollute cache.
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def test_name(self):
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self.assertEqual(sentinel('a').__name__, 'a')
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def test_doc(self):
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self.assertEqual(sentinel('a', 'b').__doc__, 'b')
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def test_doc_differentiates(self):
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self.assertIsNot(sentinel('a', 'b'), sentinel('a', 'c'))
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def test_memo(self):
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self.assertIs(sentinel('a'), sentinel('a'))
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def test_copy(self):
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a = sentinel('a')
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self.assertIs(copy(a), a)
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def test_deepcopy(self):
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a = sentinel('a')
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self.assertIs(deepcopy(a), a)
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def test_repr(self):
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self.assertEqual(
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repr(sentinel('a')),
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"sentinel('a')",
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)
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def test_new(self):
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with self.assertRaises(TypeError):
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type(sentinel('a'))()
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def test_pickle_roundtrip(self):
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a = sentinel('a')
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self.assertIs(loads(dumps(a)), a)
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def test_weakreferencable(self):
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ref(sentinel('a'))
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