mirror of
https://github.com/ets-labs/python-dependency-injector.git
synced 2025-10-31 16:07:51 +03:00
451 lines
11 KiB
Python
451 lines
11 KiB
Python
"""Resource provider tests."""
|
|
|
|
import decimal
|
|
import sys
|
|
from contextlib import contextmanager
|
|
from typing import Any
|
|
|
|
from pytest import mark, raises
|
|
|
|
from dependency_injector import containers, errors, providers, resources
|
|
|
|
|
|
def init_fn(*args, **kwargs):
|
|
return args, kwargs
|
|
|
|
|
|
def test_is_provider():
|
|
assert providers.is_provider(providers.Resource(init_fn)) is True
|
|
|
|
|
|
def test_init_optional_provides():
|
|
provider = providers.Resource()
|
|
provider.set_provides(init_fn)
|
|
assert provider.provides is init_fn
|
|
assert provider() == (tuple(), dict())
|
|
|
|
|
|
def test_set_provides_returns_():
|
|
provider = providers.Resource()
|
|
assert provider.set_provides(init_fn) is provider
|
|
|
|
|
|
@mark.parametrize(
|
|
"str_name,cls",
|
|
[
|
|
("dependency_injector.providers.Factory", providers.Factory),
|
|
("decimal.Decimal", decimal.Decimal),
|
|
("list", list),
|
|
(".test_resource_py35.test_is_provider", test_is_provider),
|
|
("test_is_provider", test_is_provider),
|
|
],
|
|
)
|
|
def test_set_provides_string_imports(str_name, cls):
|
|
assert providers.Resource(str_name).provides is cls
|
|
|
|
|
|
def test_provided_instance_provider():
|
|
provider = providers.Resource(init_fn)
|
|
assert isinstance(provider.provided, providers.ProvidedInstance)
|
|
|
|
|
|
def test_injection():
|
|
resource = object()
|
|
|
|
def _init():
|
|
_init.counter += 1
|
|
return resource
|
|
|
|
_init.counter = 0
|
|
|
|
class Container(containers.DeclarativeContainer):
|
|
resource = providers.Resource(_init)
|
|
dependency1 = providers.List(resource)
|
|
dependency2 = providers.List(resource)
|
|
|
|
container = Container()
|
|
list1 = container.dependency1()
|
|
list2 = container.dependency2()
|
|
|
|
assert list1 == [resource]
|
|
assert list1[0] is resource
|
|
|
|
assert list2 == [resource]
|
|
assert list2[0] is resource
|
|
|
|
assert _init.counter == 1
|
|
|
|
|
|
def test_init_function():
|
|
def _init():
|
|
_init.counter += 1
|
|
|
|
_init.counter = 0
|
|
|
|
provider = providers.Resource(_init)
|
|
|
|
result1 = provider()
|
|
assert result1 is None
|
|
assert _init.counter == 1
|
|
|
|
result2 = provider()
|
|
assert result2 is None
|
|
assert _init.counter == 1
|
|
|
|
provider.shutdown()
|
|
|
|
|
|
def test_init_generator():
|
|
def _init():
|
|
_init.init_counter += 1
|
|
yield
|
|
_init.shutdown_counter += 1
|
|
|
|
_init.init_counter = 0
|
|
_init.shutdown_counter = 0
|
|
|
|
provider = providers.Resource(_init)
|
|
|
|
result1 = provider()
|
|
assert result1 is None
|
|
assert _init.init_counter == 1
|
|
assert _init.shutdown_counter == 0
|
|
|
|
provider.shutdown()
|
|
assert _init.init_counter == 1
|
|
assert _init.shutdown_counter == 1
|
|
|
|
result2 = provider()
|
|
assert result2 is None
|
|
assert _init.init_counter == 2
|
|
assert _init.shutdown_counter == 1
|
|
|
|
provider.shutdown()
|
|
assert _init.init_counter == 2
|
|
assert _init.shutdown_counter == 2
|
|
|
|
|
|
def test_init_context_manager() -> None:
|
|
init_counter, shutdown_counter = 0, 0
|
|
|
|
@contextmanager
|
|
def _init():
|
|
nonlocal init_counter, shutdown_counter
|
|
|
|
init_counter += 1
|
|
yield
|
|
shutdown_counter += 1
|
|
|
|
init_counter = 0
|
|
shutdown_counter = 0
|
|
|
|
provider = providers.Resource(_init)
|
|
|
|
result1 = provider()
|
|
assert result1 is None
|
|
assert init_counter == 1
|
|
assert shutdown_counter == 0
|
|
|
|
provider.shutdown()
|
|
assert init_counter == 1
|
|
assert shutdown_counter == 1
|
|
|
|
result2 = provider()
|
|
assert result2 is None
|
|
assert init_counter == 2
|
|
assert shutdown_counter == 1
|
|
|
|
provider.shutdown()
|
|
assert init_counter == 2
|
|
assert shutdown_counter == 2
|
|
|
|
|
|
def test_init_class():
|
|
class TestResource(resources.Resource):
|
|
init_counter = 0
|
|
shutdown_counter = 0
|
|
|
|
def init(self):
|
|
self.__class__.init_counter += 1
|
|
|
|
def shutdown(self, _):
|
|
self.__class__.shutdown_counter += 1
|
|
|
|
provider = providers.Resource(TestResource)
|
|
|
|
result1 = provider()
|
|
assert result1 is None
|
|
assert TestResource.init_counter == 1
|
|
assert TestResource.shutdown_counter == 0
|
|
|
|
provider.shutdown()
|
|
assert TestResource.init_counter == 1
|
|
assert TestResource.shutdown_counter == 1
|
|
|
|
result2 = provider()
|
|
assert result2 is None
|
|
assert TestResource.init_counter == 2
|
|
assert TestResource.shutdown_counter == 1
|
|
|
|
provider.shutdown()
|
|
assert TestResource.init_counter == 2
|
|
assert TestResource.shutdown_counter == 2
|
|
|
|
|
|
def test_init_class_generic_typing():
|
|
# See issue: https://github.com/ets-labs/python-dependency-injector/issues/488
|
|
class TestDependency:
|
|
...
|
|
|
|
class TestResource(resources.Resource[TestDependency]):
|
|
def init(self, *args: Any, **kwargs: Any) -> TestDependency:
|
|
return TestDependency()
|
|
|
|
def shutdown(self, resource: TestDependency) -> None: ...
|
|
|
|
assert issubclass(TestResource, resources.Resource) is True
|
|
|
|
|
|
def test_init_class_abc_init_definition_is_required():
|
|
class TestResource(resources.Resource):
|
|
...
|
|
|
|
with raises(TypeError) as context:
|
|
TestResource()
|
|
|
|
assert "Can't instantiate abstract class TestResource" in str(context.value)
|
|
assert "init" in str(context.value)
|
|
|
|
|
|
def test_init_class_abc_shutdown_definition_is_not_required():
|
|
class TestResource(resources.Resource):
|
|
def init(self):
|
|
...
|
|
|
|
assert hasattr(TestResource(), "shutdown") is True
|
|
|
|
|
|
def test_init_not_callable():
|
|
provider = providers.Resource(1)
|
|
with raises(TypeError, match=r"object is not callable"):
|
|
provider.init()
|
|
|
|
|
|
def test_init_and_shutdown():
|
|
def _init():
|
|
_init.init_counter += 1
|
|
yield
|
|
_init.shutdown_counter += 1
|
|
|
|
_init.init_counter = 0
|
|
_init.shutdown_counter = 0
|
|
|
|
provider = providers.Resource(_init)
|
|
|
|
result1 = provider.init()
|
|
assert result1 is None
|
|
assert _init.init_counter == 1
|
|
assert _init.shutdown_counter == 0
|
|
|
|
provider.shutdown()
|
|
assert _init.init_counter == 1
|
|
assert _init.shutdown_counter == 1
|
|
|
|
result2 = provider.init()
|
|
assert result2 is None
|
|
assert _init.init_counter == 2
|
|
assert _init.shutdown_counter == 1
|
|
|
|
provider.shutdown()
|
|
assert _init.init_counter == 2
|
|
assert _init.shutdown_counter == 2
|
|
|
|
|
|
def test_shutdown_of_not_initialized():
|
|
def _init():
|
|
yield
|
|
|
|
provider = providers.Resource(_init)
|
|
|
|
result = provider.shutdown()
|
|
assert result is None
|
|
|
|
|
|
def test_initialized():
|
|
provider = providers.Resource(init_fn)
|
|
assert provider.initialized is False
|
|
|
|
provider.init()
|
|
assert provider.initialized is True
|
|
|
|
provider.shutdown()
|
|
assert provider.initialized is False
|
|
|
|
|
|
def test_call_with_context_args():
|
|
provider = providers.Resource(init_fn, "i1", "i2")
|
|
assert provider("i3", i4=4) == (("i1", "i2", "i3"), {"i4": 4})
|
|
|
|
|
|
def test_fluent_interface():
|
|
provider = providers.Resource(init_fn) \
|
|
.add_args(1, 2) \
|
|
.add_kwargs(a3=3, a4=4)
|
|
assert provider() == ((1, 2), {"a3": 3, "a4": 4})
|
|
|
|
|
|
def test_set_args():
|
|
provider = providers.Resource(init_fn) \
|
|
.add_args(1, 2) \
|
|
.set_args(3, 4)
|
|
assert provider.args == (3, 4)
|
|
|
|
|
|
def test_clear_args():
|
|
provider = providers.Resource(init_fn) \
|
|
.add_args(1, 2) \
|
|
.clear_args()
|
|
assert provider.args == tuple()
|
|
|
|
|
|
def test_set_kwargs():
|
|
provider = providers.Resource(init_fn) \
|
|
.add_kwargs(a1="i1", a2="i2") \
|
|
.set_kwargs(a3="i3", a4="i4")
|
|
assert provider.kwargs == {"a3": "i3", "a4": "i4"}
|
|
|
|
|
|
def test_clear_kwargs():
|
|
provider = providers.Resource(init_fn) \
|
|
.add_kwargs(a1="i1", a2="i2") \
|
|
.clear_kwargs()
|
|
assert provider.kwargs == {}
|
|
|
|
|
|
def test_call_overridden():
|
|
provider = providers.Resource(init_fn, 1)
|
|
overriding_provider1 = providers.Resource(init_fn, 2)
|
|
overriding_provider2 = providers.Resource(init_fn, 3)
|
|
|
|
provider.override(overriding_provider1)
|
|
provider.override(overriding_provider2)
|
|
|
|
instance1 = provider()
|
|
instance2 = provider()
|
|
|
|
assert instance1 is instance2
|
|
assert instance1 == ((3,), {})
|
|
assert instance2 == ((3,), {})
|
|
|
|
|
|
def test_deepcopy():
|
|
provider = providers.Resource(init_fn, 1, 2, a3=3, a4=4)
|
|
|
|
provider_copy = providers.deepcopy(provider)
|
|
|
|
assert provider is not provider_copy
|
|
assert provider.args == provider_copy.args
|
|
assert provider.kwargs == provider_copy.kwargs
|
|
assert isinstance(provider, providers.Resource)
|
|
|
|
|
|
def test_deepcopy_initialized():
|
|
provider = providers.Resource(init_fn)
|
|
provider.init()
|
|
|
|
with raises(errors.Error):
|
|
providers.deepcopy(provider)
|
|
|
|
|
|
def test_deepcopy_from_memo():
|
|
provider = providers.Resource(init_fn)
|
|
provider_copy_memo = providers.Resource(init_fn)
|
|
|
|
provider_copy = providers.deepcopy(
|
|
provider,
|
|
memo={id(provider): provider_copy_memo},
|
|
)
|
|
|
|
assert provider_copy is provider_copy_memo
|
|
|
|
|
|
def test_deepcopy_args():
|
|
provider = providers.Resource(init_fn)
|
|
dependent_provider1 = providers.Factory(list)
|
|
dependent_provider2 = providers.Factory(dict)
|
|
|
|
provider.add_args(dependent_provider1, dependent_provider2)
|
|
|
|
provider_copy = providers.deepcopy(provider)
|
|
dependent_provider_copy1 = provider_copy.args[0]
|
|
dependent_provider_copy2 = provider_copy.args[1]
|
|
|
|
assert provider.args != provider_copy.args
|
|
|
|
assert dependent_provider1.cls is dependent_provider_copy1.cls
|
|
assert dependent_provider1 is not dependent_provider_copy1
|
|
|
|
assert dependent_provider2.cls is dependent_provider_copy2.cls
|
|
assert dependent_provider2 is not dependent_provider_copy2
|
|
|
|
|
|
def test_deepcopy_kwargs():
|
|
provider = providers.Resource(init_fn)
|
|
dependent_provider1 = providers.Factory(list)
|
|
dependent_provider2 = providers.Factory(dict)
|
|
|
|
provider.add_kwargs(d1=dependent_provider1, d2=dependent_provider2)
|
|
|
|
provider_copy = providers.deepcopy(provider)
|
|
dependent_provider_copy1 = provider_copy.kwargs["d1"]
|
|
dependent_provider_copy2 = provider_copy.kwargs["d2"]
|
|
|
|
assert provider.kwargs != provider_copy.kwargs
|
|
|
|
assert dependent_provider1.cls is dependent_provider_copy1.cls
|
|
assert dependent_provider1 is not dependent_provider_copy1
|
|
|
|
assert dependent_provider2.cls is dependent_provider_copy2.cls
|
|
assert dependent_provider2 is not dependent_provider_copy2
|
|
|
|
|
|
def test_deepcopy_overridden():
|
|
provider = providers.Resource(init_fn)
|
|
object_provider = providers.Object(object())
|
|
|
|
provider.override(object_provider)
|
|
|
|
provider_copy = providers.deepcopy(provider)
|
|
object_provider_copy = provider_copy.overridden[0]
|
|
|
|
assert provider is not provider_copy
|
|
assert provider.args == provider_copy.args
|
|
assert isinstance(provider, providers.Resource)
|
|
|
|
assert object_provider is not object_provider_copy
|
|
assert isinstance(object_provider_copy, providers.Object)
|
|
|
|
|
|
def test_deepcopy_with_sys_streams():
|
|
provider = providers.Resource(init_fn)
|
|
provider.add_args(sys.stdin, sys.stdout, sys.stderr)
|
|
|
|
provider_copy = providers.deepcopy(provider)
|
|
|
|
assert provider is not provider_copy
|
|
assert isinstance(provider_copy, providers.Resource)
|
|
assert provider.args[0] is sys.stdin
|
|
assert provider.args[1] is sys.stdout
|
|
assert provider.args[2] is sys.stderr
|
|
|
|
|
|
def test_repr():
|
|
provider = providers.Resource(init_fn)
|
|
|
|
assert repr(provider) == (
|
|
"<dependency_injector.providers.Resource({0}) at {1}>".format(
|
|
repr(init_fn),
|
|
hex(id(provider)),
|
|
)
|
|
)
|