240 lines
8.4 KiB
Python
240 lines
8.4 KiB
Python
"""Dependency injector dynamic container unit tests."""
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import unittest2 as unittest
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from dependency_injector import (
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containers,
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providers,
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errors,
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)
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class ContainerA(containers.DeclarativeContainer):
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p11 = providers.Provider()
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p12 = providers.Provider()
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class DeclarativeContainerInstanceTests(unittest.TestCase):
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def test_providers_attribute(self):
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container_a1 = ContainerA()
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container_a2 = ContainerA()
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self.assertIsNot(container_a1.p11, container_a2.p11)
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self.assertIsNot(container_a1.p12, container_a2.p12)
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self.assertNotEqual(container_a1.providers, container_a2.providers)
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def test_dependencies_attribute(self):
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container = ContainerA()
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container.a1 = providers.Dependency()
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container.a2 = providers.DependenciesContainer()
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self.assertEqual(container.dependencies, {'a1': container.a1, 'a2': container.a2})
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def test_set_get_del_providers(self):
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p13 = providers.Provider()
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container_a1 = ContainerA()
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container_a2 = ContainerA()
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container_a1.p13 = p13
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container_a2.p13 = p13
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self.assertEqual(ContainerA.providers, dict(p11=ContainerA.p11,
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p12=ContainerA.p12))
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self.assertEqual(ContainerA.cls_providers, dict(p11=ContainerA.p11,
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p12=ContainerA.p12))
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self.assertEqual(container_a1.providers, dict(p11=container_a1.p11,
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p12=container_a1.p12,
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p13=p13))
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self.assertEqual(container_a2.providers, dict(p11=container_a2.p11,
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p12=container_a2.p12,
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p13=p13))
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del container_a1.p13
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self.assertEqual(container_a1.providers, dict(p11=container_a1.p11,
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p12=container_a1.p12))
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del container_a2.p13
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self.assertEqual(container_a2.providers, dict(p11=container_a2.p11,
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p12=container_a2.p12))
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del container_a1.p11
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del container_a1.p12
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self.assertEqual(container_a1.providers, dict())
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self.assertEqual(ContainerA.providers, dict(p11=ContainerA.p11,
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p12=ContainerA.p12))
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del container_a2.p11
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del container_a2.p12
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self.assertEqual(container_a2.providers, dict())
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self.assertEqual(ContainerA.providers, dict(p11=ContainerA.p11,
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p12=ContainerA.p12))
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def test_set_invalid_provider_type(self):
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container_a = ContainerA()
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container_a.provider_type = providers.Object
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with self.assertRaises(errors.Error):
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container_a.px = providers.Provider()
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self.assertIs(ContainerA.provider_type,
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containers.DeclarativeContainer.provider_type)
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def test_set_providers(self):
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p13 = providers.Provider()
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p14 = providers.Provider()
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container_a = ContainerA()
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container_a.set_providers(p13=p13, p14=p14)
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self.assertIs(container_a.p13, p13)
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self.assertIs(container_a.p14, p14)
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def test_override(self):
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class _Container(containers.DeclarativeContainer):
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p11 = providers.Provider()
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class _OverridingContainer1(containers.DeclarativeContainer):
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p11 = providers.Provider()
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class _OverridingContainer2(containers.DeclarativeContainer):
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p11 = providers.Provider()
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p12 = providers.Provider()
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container = _Container()
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overriding_container1 = _OverridingContainer1()
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overriding_container2 = _OverridingContainer2()
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container.override(overriding_container1)
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container.override(overriding_container2)
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self.assertEqual(container.overridden,
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(overriding_container1,
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overriding_container2))
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self.assertEqual(container.p11.overridden,
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(overriding_container1.p11,
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overriding_container2.p11))
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self.assertEqual(_Container.overridden, tuple())
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self.assertEqual(_Container.p11.overridden, tuple())
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def test_override_with_itself(self):
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container = ContainerA()
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with self.assertRaises(errors.Error):
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container.override(container)
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def test_override_providers(self):
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p1 = providers.Provider()
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p2 = providers.Provider()
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container_a = ContainerA()
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container_a.override_providers(p11=p1, p12=p2)
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self.assertIs(container_a.p11.last_overriding, p1)
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self.assertIs(container_a.p12.last_overriding, p2)
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def test_override_providers_with_unknown_provider(self):
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container_a = ContainerA()
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with self.assertRaises(AttributeError):
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container_a.override_providers(unknown=providers.Provider())
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def test_reset_last_overridding(self):
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class _Container(containers.DeclarativeContainer):
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p11 = providers.Provider()
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class _OverridingContainer1(containers.DeclarativeContainer):
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p11 = providers.Provider()
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class _OverridingContainer2(containers.DeclarativeContainer):
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p11 = providers.Provider()
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p12 = providers.Provider()
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container = _Container()
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overriding_container1 = _OverridingContainer1()
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overriding_container2 = _OverridingContainer2()
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container.override(overriding_container1)
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container.override(overriding_container2)
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container.reset_last_overriding()
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self.assertEqual(container.overridden,
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(overriding_container1,))
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self.assertEqual(container.p11.overridden,
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(overriding_container1.p11,))
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def test_reset_last_overridding_when_not_overridden(self):
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container = ContainerA()
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with self.assertRaises(errors.Error):
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container.reset_last_overriding()
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def test_reset_override(self):
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class _Container(containers.DeclarativeContainer):
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p11 = providers.Provider()
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class _OverridingContainer1(containers.DeclarativeContainer):
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p11 = providers.Provider()
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class _OverridingContainer2(containers.DeclarativeContainer):
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p11 = providers.Provider()
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p12 = providers.Provider()
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container = _Container()
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overriding_container1 = _OverridingContainer1()
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overriding_container2 = _OverridingContainer2()
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container.override(overriding_container1)
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container.override(overriding_container2)
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container.reset_override()
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self.assertEqual(container.overridden, tuple())
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self.assertEqual(container.p11.overridden, tuple())
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def test_init_shutdown_resources(self):
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def _init1():
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_init1.init_counter += 1
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yield
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_init1.shutdown_counter += 1
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_init1.init_counter = 0
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_init1.shutdown_counter = 0
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def _init2():
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_init2.init_counter += 1
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yield
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_init2.shutdown_counter += 1
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_init2.init_counter = 0
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_init2.shutdown_counter = 0
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class Container(containers.DeclarativeContainer):
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resource1 = providers.Resource(_init1)
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resource2 = providers.Resource(_init2)
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container = Container()
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self.assertEqual(_init1.init_counter, 0)
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self.assertEqual(_init1.shutdown_counter, 0)
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self.assertEqual(_init2.init_counter, 0)
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self.assertEqual(_init2.shutdown_counter, 0)
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container.init_resources()
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self.assertEqual(_init1.init_counter, 1)
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self.assertEqual(_init1.shutdown_counter, 0)
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self.assertEqual(_init2.init_counter, 1)
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self.assertEqual(_init2.shutdown_counter, 0)
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container.shutdown_resources()
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self.assertEqual(_init1.init_counter, 1)
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self.assertEqual(_init1.shutdown_counter, 1)
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self.assertEqual(_init2.init_counter, 1)
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self.assertEqual(_init2.shutdown_counter, 1)
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container.init_resources()
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container.shutdown_resources()
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self.assertEqual(_init1.init_counter, 2)
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self.assertEqual(_init1.shutdown_counter, 2)
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self.assertEqual(_init2.init_counter, 2)
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self.assertEqual(_init2.shutdown_counter, 2)
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