def test_list_binding_with_named_arguments(self):
self.binding_registry.register(
RegisteredMultiBinding(
MultiBinding(
MyType,
[
ItemBinding(bound_instance=self.named_instance),
],
named="my_name",
),
item_bindings=[
RegisteredBinding(InstanceBinding(MyType, self.named_instance, named="my_name"))
]
)
)
self.binding_registry.register(
RegisteredMultiBinding(
MultiBinding(
MyType,
[
ItemBinding(bound_instance=self.my_instance),
],
),
item_bindings=[
RegisteredBinding(InstanceBinding(MyType, self.my_instance))
]
)
)
self.binding_registry.register(RegisteredBinding(self.my_named_instance_binding))
self.binding_registry.register(RegisteredBinding(SelfBinding(MyType)))
context = InjectionContext(Target(List[MyType], "my_name"), self.state)
provider = self.provider_creator.get_provider(context)
list_instance = provider.get()
self.assertEqual([self.named_instance], list_instance)
def test_inject_from_multiple_providers_takes_last(self):
my_instance = MyType()
my_instance_2 = MyType()
injector = Injector(bindings=[
InstanceBinding(MyType, my_instance),
InstanceBinding(MyType, my_instance_2),
])
self.assertIs(my_instance_2, injector.inject(MyType))
def test_multi_binding(self):
instance = MyType()
provider = MyProvider
self.module.multi_bind(
MyType,
[
self.module.bind_item(to_class=MyType),
self.module.bind_item(to_instance=instance),
self.module.bind_item(to_provider=provider),
],
scope=PerLookupScope,
named="my_name",
override_bindings=False,
)
self.assertEqual(
{
FrozenTarget(List[MyType], "my_name"):
RegisteredMultiBinding(
MultiBinding(
MyType,
[
ItemBinding(bound_class=MyType),
ItemBinding(bound_instance=instance),
ItemBinding(bound_provider=provider),
],
scope=PerLookupScope,
named="my_name",
override_bindings=False,
),
item_bindings=[
RegisteredBinding(
SelfBinding(MyType,
scope=PerLookupScope,
named="my_name"), ),
RegisteredBinding(
InstanceBinding(MyType, instance,
named="my_name"), ),
RegisteredBinding(
ProviderBinding(MyType,
provider,
scope=PerLookupScope,
named="my_name"), )
]),
FrozenTarget(MyProvider, "my_name"):
RegisteredBinding(
SelfBinding(
MyProvider, scope=PerLookupScope, named="my_name")),
FrozenTarget(MyType, "my_name"):
RegisteredBinding(
InstanceBinding(MyType, instance, named="my_name"))
}, self.module.binding_registry.get_bindings_by_target())
def test_register_multi_binding_saves_binding_to_known_type_in_order(self):
item_binding_1 = ItemBinding(MyType)
registered_item_binding_1 = RegisteredBinding(SelfBinding(MyType))
item_binding_2 = ItemBinding(bound_instance=MyType())
registered_item_binding_2 = RegisteredBinding(
InstanceBinding(MyType, item_binding_2.bound_instance))
binding_1 = RegisteredMultiBinding(MultiBinding(
MyType, [item_binding_1]),
item_bindings=[
registered_item_binding_1,
])
binding_2 = RegisteredMultiBinding(MultiBinding(
MyType, [item_binding_2], override_bindings=False),
item_bindings=[
registered_item_binding_2,
])
self.binding_registry.register(binding_1)
self.binding_registry.register(binding_2)
registered_binding = self.binding_registry.get_binding(
Target(List[MyType]))
self.assertIsInstance(registered_binding, RegisteredMultiBinding)
self.assertIsInstance(registered_binding.raw_binding, MultiBinding)
self.assertEqual(
[registered_item_binding_1, registered_item_binding_2],
registered_binding.item_bindings)
def setUp(self) -> None:
self.binding_registry = BindingRegistry()
self.binding_registry.register(RegisteredBinding(InstanceBinding(SingletonScope, SingletonScope())))
self.provider_creator = ProviderCreator()
self.state = InjectionState(
self.provider_creator,
self.binding_registry,
)
self.context = InjectionContext(Target(MyType), self.state)
self.other_context = InjectionContext(Target(MyOtherType), self.state)
self.named_context = InjectionContext(Target(MyType, "my_name"), self.state)
self.my_instance = MyType()
self.my_instance_binding = InstanceBinding(MyType, self.my_instance)
self.named_instance = MyType()
self.my_named_instance_binding = InstanceBinding(MyType, self.named_instance, named="my_name")
self.my_other_instance = MyOtherType()
self.my_other_instance_binding = InstanceBinding(MyOtherType, self.my_other_instance)
def test_list_implicit_binding(self):
instance = MyType()
self.binding_registry.register(RegisteredBinding(InstanceBinding(MyType, instance)))
context = InjectionContext(Target(List[MyType]), self.state)
provider = self.provider_creator.get_provider(context)
self.assertIsInstance(provider, ListProvider)
list_instance = provider.get()
self.assertEqual([instance], list_instance)
def test_bind_instance(self):
my_instance = MyType()
self.module.bind(MyType, to_instance=my_instance)
self.assertEqual(
{
FrozenTarget(MyType):
RegisteredBinding(InstanceBinding(MyType, my_instance)),
}, self.module.binding_registry.get_bindings_by_target())
def test_bind_provider_instance(self):
self.module.bind(MyType, to_provider=self.my_provider)
self.assertEqual(
{
FrozenTarget(MyType):
RegisteredBinding(ProviderBinding(MyType, self.my_provider)),
FrozenTarget(MyProvider):
RegisteredBinding(InstanceBinding(MyProvider,
self.my_provider)),
}, self.module.binding_registry.get_bindings_by_target())
def test_bind_with_name(self):
my_instance = MyType()
self.module.bind(MyType, to_instance=my_instance)
self.module.bind(MyType, named="my_name")
my_other_instance = OtherType()
self.module.bind(OtherType,
to_instance=my_other_instance,
named="my_other_name")
self.assertEqual(
{
FrozenTarget(MyType):
RegisteredBinding(InstanceBinding(MyType, my_instance)),
FrozenTarget(MyType, "my_name"):
RegisteredBinding(SelfBinding(MyType, named="my_name")),
FrozenTarget(OtherType, "my_other_name"):
RegisteredBinding(
InstanceBinding(OtherType, my_other_instance,
"my_other_name")),
}, self.module.binding_registry.get_bindings_by_target())
def test_type_binding_with_explicit_binding(self):
class SubType(MyType):
pass
self.binding_registry.register(RegisteredBinding(InstanceBinding(Type[MyType], MyType)))
self.binding_registry.register(RegisteredBinding(ClassBinding(MyType, SubType)))
context = InjectionContext(Target(Type[MyType]), self.state)
provider = self.provider_creator.get_provider(context)
self.assertIsInstance(provider, FromInstanceProvider)
instance = provider.get()
self.assertIs(MyType, instance)
def setUp(self) -> None:
self.binding_registry = BindingRegistry()
mock_binding = create_autospec(Binding, spec_set=True)
mock_binding.target = FrozenTarget(MyType)
self.my_type_binding = RegisteredBinding(mock_binding)
mock_named_binding = create_autospec(Binding, spec_set=True)
mock_named_binding.target = FrozenTarget(MyType, "my_name")
self.my_type_named_binding = RegisteredBinding(mock_named_binding)
self.my_type_binding_2 = RegisteredBinding(
InstanceBinding(MyType, MyType()))
other_mock_binding = create_autospec(Binding, spec_set=True)
other_mock_binding.target = FrozenTarget(OtherType)
self.other_type_binding = RegisteredBinding(other_mock_binding)
def test_register_class_binding_does_not_create_self_binding_if_target_exists(
self):
class MySubType(MyType):
pass
my_instance = MySubType()
class_binding = RegisteredBinding(ClassBinding(MyType, MySubType))
instance_binding = RegisteredBinding(
InstanceBinding(MySubType, my_instance))
self.binding_registry.register(instance_binding)
self.binding_registry.register(class_binding)
self.assertIs(class_binding,
self.binding_registry.get_binding(Target(MyType)))
self.assertIs(instance_binding,
self.binding_registry.get_binding(Target(MySubType)))
def test_register_provider_binding_with_instance_creates_additional_binding(
self):
class MyProvider(Provider[str]):
def get(self) -> str:
return "hello"
provider_instance = MyProvider()
provider_binding = RegisteredBinding(
ProviderBinding(str, provider_instance, named="my_name"))
self.binding_registry.register(provider_binding)
self.assertEqual(
{
FrozenTarget(str, "my_name"):
provider_binding,
FrozenTarget(MyProvider, "my_name"):
RegisteredBinding(
InstanceBinding(MyProvider, provider_instance, "my_name")),
}, self.binding_registry.get_bindings_by_target())
def test_list_binding_with_multi_binding(self):
self.binding_registry.register(
RegisteredMultiBinding(
MultiBinding(
MyType,
[
ItemBinding(bound_instance=self.my_instance),
ItemBinding(MyType),
],
),
item_bindings=[
RegisteredBinding(InstanceBinding(MyType,
self.my_instance)),
RegisteredBinding(SelfBinding(MyType)),
]))
context = InjectionContext(Target(List[MyType]), self.state)
provider = self.provider_creator.get_provider(context)
list_instance = provider.get()
self.assertEqual([self.my_instance, ANY], list_instance)
self.assertIsInstance(list_instance[1], MyType)
def test_set_binding_with_multi_binding(self):
self.binding_registry.register(
RegisteredMultiBinding(
MultiBinding(
MyType,
[
ItemBinding(bound_instance=self.my_instance),
ItemBinding(MyType),
],
),
item_bindings=[
RegisteredBinding(InstanceBinding(MyType,
self.my_instance)),
RegisteredBinding(SelfBinding(MyType)),
]))
context = InjectionContext(Target(Set[MyType]), self.state)
provider = self.provider_creator.get_provider(context)
self.assertIsInstance(provider, FromClassProvider)
set_instance = provider.get()
self.assertIn(self.my_instance, set_instance)
self.assertEqual(2, len(set_instance))
def test_inject_from_binding(self):
my_instance = MyType()
injector = Injector(bindings=[
InstanceBinding(MyType, my_instance)
])
self.assertIs(my_instance, injector.inject(MyType))
