mirror of
https://github.com/ets-labs/python-dependency-injector.git
synced 2024-11-22 09:36:48 +03:00
524 lines
17 KiB
Python
524 lines
17 KiB
Python
"""Dependency injector creational providers unittests."""
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import unittest2 as unittest
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from dependency_injector import providers, injections, utils, errors
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class Example(object):
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"""Example class for Factory provider tests."""
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def __init__(self, init_arg1=None, init_arg2=None, init_arg3=None,
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init_arg4=None):
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"""Initializer."""
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self.init_arg1 = init_arg1
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self.init_arg2 = init_arg2
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self.init_arg3 = init_arg3
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self.init_arg4 = init_arg4
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self.attribute1 = None
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self.attribute2 = None
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class FactoryTests(unittest.TestCase):
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"""Factory test cases."""
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def test_is_provider(self):
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"""Test `is_provider` check."""
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self.assertTrue(utils.is_provider(providers.Factory(Example)))
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def test_init_with_callable(self):
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"""Test creation of provider with a callable."""
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self.assertTrue(providers.Factory(credits))
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def test_init_with_not_callable(self):
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"""Test creation of provider with not a callable."""
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self.assertRaises(errors.Error, providers.Factory, 123)
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def test_init_with_valid_provided_type(self):
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"""Test creation with not valid provided type."""
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class ExampleProvider(providers.Factory):
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"""Example provider."""
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provided_type = Example
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example_provider = ExampleProvider(Example, 1, 2)
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self.assertIsInstance(example_provider(), Example)
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def test_init_with_valid_provided_subtype(self):
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"""Test creation with not valid provided type."""
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class ExampleProvider(providers.Factory):
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"""Example provider."""
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provided_type = Example
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class NewExampe(Example):
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"""Example class subclass."""
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example_provider = ExampleProvider(NewExampe, 1, 2)
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self.assertIsInstance(example_provider(), NewExampe)
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def test_init_with_invalid_provided_type(self):
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"""Test creation with not valid provided type."""
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class ExampleProvider(providers.Factory):
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"""Example provider."""
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provided_type = Example
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with self.assertRaises(errors.Error):
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ExampleProvider(list)
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def test_call(self):
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"""Test call."""
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provider = providers.Factory(Example)
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instance1 = provider()
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instance2 = provider()
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self.assertIsNot(instance1, instance2)
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self.assertIsInstance(instance1, Example)
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self.assertIsInstance(instance2, Example)
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def test_call_with_init_positional_args(self):
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"""Test call with init positional args."""
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provider = providers.Factory(Example, 'i1', 'i2')
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instance1 = provider()
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instance2 = provider()
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self.assertEqual(instance1.init_arg1, 'i1')
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self.assertEqual(instance1.init_arg2, 'i2')
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self.assertEqual(instance2.init_arg1, 'i1')
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self.assertEqual(instance2.init_arg2, 'i2')
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self.assertIsNot(instance1, instance2)
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self.assertIsInstance(instance1, Example)
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self.assertIsInstance(instance2, Example)
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def test_call_with_init_keyword_args(self):
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"""Test call with init keyword args."""
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provider = providers.Factory(Example, init_arg1='i1', init_arg2='i2')
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instance1 = provider()
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instance2 = provider()
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self.assertEqual(instance1.init_arg1, 'i1')
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self.assertEqual(instance1.init_arg2, 'i2')
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self.assertEqual(instance2.init_arg1, 'i1')
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self.assertEqual(instance2.init_arg2, 'i2')
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self.assertIsNot(instance1, instance2)
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self.assertIsInstance(instance1, Example)
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self.assertIsInstance(instance2, Example)
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def test_call_with_init_positional_and_keyword_args(self):
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"""Test call with init positional and keyword args."""
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provider = providers.Factory(Example, 'i1', init_arg2='i2')
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instance1 = provider()
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instance2 = provider()
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self.assertEqual(instance1.init_arg1, 'i1')
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self.assertEqual(instance1.init_arg2, 'i2')
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self.assertEqual(instance2.init_arg1, 'i1')
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self.assertEqual(instance2.init_arg2, 'i2')
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self.assertIsNot(instance1, instance2)
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self.assertIsInstance(instance1, Example)
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self.assertIsInstance(instance2, Example)
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def test_call_with_attributes(self):
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"""Test call with attribute injections."""
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provider = providers.Factory(Example)
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provider.add_attributes(attribute1='a1', attribute2='a2')
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instance1 = provider()
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instance2 = provider()
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self.assertEqual(instance1.attribute1, 'a1')
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self.assertEqual(instance1.attribute2, 'a2')
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self.assertEqual(instance2.attribute1, 'a1')
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self.assertEqual(instance2.attribute2, 'a2')
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self.assertIsNot(instance1, instance2)
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self.assertIsInstance(instance1, Example)
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self.assertIsInstance(instance2, Example)
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def test_call_with_context_args(self):
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"""Test call with context args."""
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provider = providers.Factory(Example, 11, 22)
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instance = provider(33, 44)
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self.assertEqual(instance.init_arg1, 11)
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self.assertEqual(instance.init_arg2, 22)
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self.assertEqual(instance.init_arg3, 33)
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self.assertEqual(instance.init_arg4, 44)
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def test_call_with_context_kwargs(self):
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"""Test call with context kwargs."""
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provider = providers.Factory(Example, init_arg1=1)
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instance1 = provider(init_arg2=22)
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self.assertEqual(instance1.init_arg1, 1)
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self.assertEqual(instance1.init_arg2, 22)
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instance2 = provider(init_arg1=11, init_arg2=22)
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self.assertEqual(instance2.init_arg1, 11)
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self.assertEqual(instance2.init_arg2, 22)
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def test_call_with_context_args_and_kwargs(self):
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"""Test call with context args and kwargs."""
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provider = providers.Factory(Example, 11)
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instance = provider(22, init_arg3=33, init_arg4=44)
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self.assertEqual(instance.init_arg1, 11)
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self.assertEqual(instance.init_arg2, 22)
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self.assertEqual(instance.init_arg3, 33)
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self.assertEqual(instance.init_arg4, 44)
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def test_fluent_interface(self):
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"""Test injections definition with fluent interface."""
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provider = providers.Factory(Example) \
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.add_args(1, 2) \
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.add_kwargs(init_arg3=3, init_arg4=4) \
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.add_attributes(attribute1=5, attribute2=6)
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instance = provider()
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self.assertEqual(instance.init_arg1, 1)
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self.assertEqual(instance.init_arg2, 2)
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self.assertEqual(instance.init_arg3, 3)
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self.assertEqual(instance.init_arg4, 4)
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self.assertEqual(instance.attribute1, 5)
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self.assertEqual(instance.attribute2, 6)
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def test_call_overridden(self):
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"""Test call on overridden provider."""
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provider = providers.Factory(Example)
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overriding_provider1 = providers.Factory(dict)
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overriding_provider2 = providers.Factory(list)
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provider.override(overriding_provider1)
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provider.override(overriding_provider2)
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instance1 = provider()
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instance2 = provider()
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self.assertIsNot(instance1, instance2)
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self.assertIsInstance(instance1, list)
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self.assertIsInstance(instance2, list)
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def test_repr(self):
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"""Test representation of provider."""
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provider = providers.Factory(Example)
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self.assertEqual(repr(provider),
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'<dependency_injector.providers.creational.'
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'Factory({0}) at {1}>'.format(
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repr(Example),
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hex(id(provider))))
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class DelegatedFactoryTests(unittest.TestCase):
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"""DelegatedFactory test cases."""
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def test_inheritance(self):
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"""Test inheritance."""
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self.assertIsInstance(providers.DelegatedFactory(object),
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providers.Factory)
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def test_is_provider(self):
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"""Test is_provider."""
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self.assertTrue(utils.is_provider(providers.DelegatedFactory(object)))
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def test_is_delegated_provider(self):
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"""Test is_delegated_provider."""
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provider = providers.DelegatedFactory(object)
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self.assertIs(provider.inject(), provider)
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class SingletonTests(unittest.TestCase):
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"""Singleton test cases."""
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def test_is_provider(self):
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"""Test `is_provider` check."""
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self.assertTrue(utils.is_provider(providers.Singleton(Example)))
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def test_init_with_callable(self):
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"""Test creation of provider with a callable."""
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self.assertTrue(providers.Singleton(credits))
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def test_init_with_not_callable(self):
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"""Test creation of provider with not a callable."""
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self.assertRaises(errors.Error, providers.Singleton, 123)
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def test_init_with_valid_provided_type(self):
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"""Test creation with not valid provided type."""
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class ExampleProvider(providers.Singleton):
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"""Example provider."""
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provided_type = Example
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example_provider = ExampleProvider(Example, 1, 2)
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self.assertIsInstance(example_provider(), Example)
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def test_init_with_valid_provided_subtype(self):
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"""Test creation with not valid provided type."""
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class ExampleProvider(providers.Singleton):
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"""Example provider."""
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provided_type = Example
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class NewExampe(Example):
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"""Example class subclass."""
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example_provider = ExampleProvider(NewExampe, 1, 2)
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self.assertIsInstance(example_provider(), NewExampe)
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def test_init_with_invalid_provided_type(self):
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"""Test creation with not valid provided type."""
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class ExampleProvider(providers.Singleton):
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"""Example provider."""
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provided_type = Example
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with self.assertRaises(errors.Error):
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ExampleProvider(list)
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def test_call(self):
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"""Test getting of instances."""
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provider = providers.Singleton(Example)
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instance1 = provider()
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instance2 = provider()
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self.assertIs(instance1, instance2)
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self.assertIsInstance(instance1, Example)
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self.assertIsInstance(instance2, Example)
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def test_call_with_init_positional_args(self):
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"""Test getting of instances with init positional args."""
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provider = providers.Singleton(Example, 'i1', 'i2')
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instance1 = provider()
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instance2 = provider()
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self.assertEqual(instance1.init_arg1, 'i1')
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self.assertEqual(instance1.init_arg2, 'i2')
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self.assertEqual(instance2.init_arg1, 'i1')
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self.assertEqual(instance2.init_arg2, 'i2')
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self.assertIs(instance1, instance2)
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self.assertIsInstance(instance1, Example)
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self.assertIsInstance(instance2, Example)
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def test_call_with_init_keyword_args(self):
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"""Test getting of instances with init keyword args."""
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provider = providers.Singleton(Example, init_arg1='i1', init_arg2='i2')
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instance1 = provider()
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instance2 = provider()
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self.assertEqual(instance1.init_arg1, 'i1')
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self.assertEqual(instance1.init_arg2, 'i2')
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self.assertEqual(instance2.init_arg1, 'i1')
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self.assertEqual(instance2.init_arg2, 'i2')
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self.assertIs(instance1, instance2)
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self.assertIsInstance(instance1, Example)
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self.assertIsInstance(instance2, Example)
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def test_call_with_init_positional_and_keyword_args(self):
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"""Test getting of instances with init positional and keyword args."""
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provider = providers.Singleton(Example, 'i1', init_arg2='i2')
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instance1 = provider()
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instance2 = provider()
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self.assertEqual(instance1.init_arg1, 'i1')
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self.assertEqual(instance1.init_arg2, 'i2')
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self.assertEqual(instance2.init_arg1, 'i1')
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self.assertEqual(instance2.init_arg2, 'i2')
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self.assertIs(instance1, instance2)
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self.assertIsInstance(instance1, Example)
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self.assertIsInstance(instance2, Example)
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def test_call_with_attributes(self):
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"""Test getting of instances with attribute injections."""
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provider = providers.Singleton(Example)
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provider.add_attributes(attribute1='a1', attribute2='a2')
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instance1 = provider()
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instance2 = provider()
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self.assertEqual(instance1.attribute1, 'a1')
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self.assertEqual(instance1.attribute2, 'a2')
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self.assertEqual(instance2.attribute1, 'a1')
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self.assertEqual(instance2.attribute2, 'a2')
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self.assertIs(instance1, instance2)
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self.assertIsInstance(instance1, Example)
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self.assertIsInstance(instance2, Example)
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def test_call_with_context_args(self):
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"""Test getting of instances with context args."""
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provider = providers.Singleton(Example)
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instance = provider(11, 22)
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self.assertEqual(instance.init_arg1, 11)
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self.assertEqual(instance.init_arg2, 22)
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def test_call_with_context_kwargs(self):
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"""Test getting of instances with context kwargs."""
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provider = providers.Singleton(Example, init_arg1=1)
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instance1 = provider(init_arg2=22)
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self.assertEqual(instance1.init_arg1, 1)
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self.assertEqual(instance1.init_arg2, 22)
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# Instance is created earlier
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instance1 = provider(init_arg1=11, init_arg2=22)
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self.assertEqual(instance1.init_arg1, 1)
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self.assertEqual(instance1.init_arg2, 22)
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def test_call_with_context_args_and_kwargs(self):
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"""Test getting of instances with context args and kwargs."""
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provider = providers.Singleton(Example, 11)
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instance = provider(22, init_arg3=33, init_arg4=44)
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self.assertEqual(instance.init_arg1, 11)
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self.assertEqual(instance.init_arg2, 22)
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self.assertEqual(instance.init_arg3, 33)
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self.assertEqual(instance.init_arg4, 44)
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def test_fluent_interface(self):
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"""Test injections definition with fluent interface."""
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provider = providers.Singleton(Example) \
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.add_args(1, 2) \
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.add_kwargs(init_arg3=3, init_arg4=4) \
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.add_attributes(attribute1=5, attribute2=6)
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instance = provider()
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self.assertEqual(instance.init_arg1, 1)
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self.assertEqual(instance.init_arg2, 2)
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self.assertEqual(instance.init_arg3, 3)
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self.assertEqual(instance.init_arg4, 4)
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self.assertEqual(instance.attribute1, 5)
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self.assertEqual(instance.attribute2, 6)
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def test_call_overridden(self):
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"""Test getting of instances on overridden provider."""
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provider = providers.Singleton(Example)
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overriding_provider1 = providers.Singleton(dict)
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overriding_provider2 = providers.Singleton(object)
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provider.override(overriding_provider1)
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provider.override(overriding_provider2)
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instance1 = provider()
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instance2 = provider()
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self.assertIs(instance1, instance2)
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self.assertIsInstance(instance1, object)
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self.assertIsInstance(instance2, object)
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def test_reset(self):
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"""Test creation and reset of single object."""
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provider = providers.Singleton(object)
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instance1 = provider()
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self.assertIsInstance(instance1, object)
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provider.reset()
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instance2 = provider()
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self.assertIsInstance(instance1, object)
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self.assertIsNot(instance1, instance2)
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def test_repr(self):
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"""Test representation of provider."""
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provider = providers.Singleton(Example)
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self.assertEqual(repr(provider),
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'<dependency_injector.providers.creational.'
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'Singleton({0}) at {1}>'.format(
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repr(Example),
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hex(id(provider))))
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class DelegatedSingletonTests(unittest.TestCase):
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"""DelegatedSingleton test cases."""
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def test_inheritance(self):
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"""Test inheritance."""
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self.assertIsInstance(providers.DelegatedSingleton(object),
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providers.Singleton)
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def test_is_provider(self):
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"""Test is_provider."""
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self.assertTrue(utils.is_provider(
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providers.DelegatedSingleton(object)))
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def test_is_delegated_provider(self):
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"""Test is_delegated_provider."""
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provider = providers.DelegatedSingleton(object)
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self.assertIs(provider.inject(), provider)
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class FactoryAsDecoratorTests(unittest.TestCase):
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"""Factory as decorator tests."""
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def test_decoration(self):
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"""Test decoration of some class with Factory provider."""
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@providers.Factory
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class AuthService(object):
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"""Auth service."""
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@providers.Factory
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@injections.inject(auth_service=AuthService)
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class UsersService(object):
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"""Users service."""
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def __init__(self, auth_service):
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"""Initializer."""
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self.auth_service = auth_service
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users_service = UsersService()
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self.assertIsInstance(users_service, UsersService.cls)
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self.assertIsInstance(users_service.auth_service, AuthService.cls)
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def test_decoration_and_overriding(self):
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"""Test decoration of some class with Factory provider."""
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@providers.Factory
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class AuthService(object):
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"""Auth service."""
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@providers.override(AuthService)
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@providers.Factory
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class ExtAuthService(AuthService.cls):
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"""Extended auth service."""
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auth_service = AuthService()
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self.assertIsInstance(auth_service, ExtAuthService.cls)
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