mirror of
https://github.com/ets-labs/python-dependency-injector.git
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87 lines
2.8 KiB
Python
87 lines
2.8 KiB
Python
"""Dependency injector base providers unit tests."""
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import unittest2 as unittest
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from dependency_injector import (
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providers,
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errors,
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)
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class ProviderTests(unittest.TestCase):
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def setUp(self):
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self.provider = providers.Provider()
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def test_is_provider(self):
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self.assertTrue(providers.is_provider(self.provider))
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def test_call(self):
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self.assertRaises(NotImplementedError, self.provider.__call__)
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def test_delegate(self):
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delegate1 = self.provider.delegate()
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self.assertIsInstance(delegate1, providers.Delegate)
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self.assertIs(delegate1(), self.provider)
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delegate2 = self.provider.delegate()
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self.assertIsInstance(delegate2, providers.Delegate)
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self.assertIs(delegate2(), self.provider)
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self.assertIsNot(delegate1, delegate2)
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def test_override(self):
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overriding_provider = providers.Provider()
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self.provider.override(overriding_provider)
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self.assertTrue(self.provider.overridden)
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def test_overriding_context(self):
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overriding_provider = providers.Provider()
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with self.provider.override(overriding_provider):
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self.assertTrue(self.provider.overridden)
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self.assertFalse(self.provider.overridden)
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def test_override_with_itself(self):
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self.assertRaises(errors.Error, self.provider.override, self.provider)
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def test_override_with_not_provider(self):
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obj = object()
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self.provider.override(obj)
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self.assertIs(self.provider(), obj)
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def test_reset_last_overriding(self):
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overriding_provider1 = providers.Provider()
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overriding_provider2 = providers.Provider()
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self.provider.override(overriding_provider1)
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self.provider.override(overriding_provider2)
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self.assertIs(self.provider.overridden[-1], overriding_provider2)
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self.provider.reset_last_overriding()
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self.assertIs(self.provider.overridden[-1], overriding_provider1)
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self.provider.reset_last_overriding()
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self.assertFalse(self.provider.overridden)
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def test_reset_last_overriding_of_not_overridden_provider(self):
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self.assertRaises(errors.Error, self.provider.reset_last_overriding)
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def test_reset_override(self):
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overriding_provider = providers.Provider()
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self.provider.override(overriding_provider)
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self.assertTrue(self.provider.overridden)
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self.assertEqual(self.provider.overridden, (overriding_provider,))
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self.provider.reset_override()
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self.assertEqual(self.provider.overridden, tuple())
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def test_repr(self):
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self.assertEqual(repr(self.provider),
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'<dependency_injector.providers.base.'
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'Provider() at {0}>'.format(hex(id(self.provider))))
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