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