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feat: expose ContextProvider.context_type as a public attribute #244

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Merged
lesnik512 merged 1 commit into from
Jun 26, 2026
Merged

feat: expose ContextProvider.context_type as a public attribute #244

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10 changes: 6 additions & 4 deletions modern_di/providers/context_provider.py
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Original file line number Diff line number Diff line change
Expand Up @@ -20,7 +20,7 @@ class ContextProvider(AbstractProvider[types.T_co]):
``ArgumentResolutionError``.
"""

__slots__ = ("_context_type",)
__slots__ = ("context_type",)

def __init__(
self,
Expand All @@ -32,10 +32,12 @@ def __init__(
super().__init__(
scope=scope, bound_type=context_type if isinstance(bound_type, types.UnsetType) else bound_type
)
self._context_type = context_type
# Public, like its sibling ``bound_type`` — the type this provider supplies and
# the key its value is set under in ``context``.
self.context_type = context_type

def __repr__(self) -> str:
return f"ContextProvider(context_type={self._context_type!r}, scope={self.scope!r})"
return f"ContextProvider(context_type={self.context_type!r}, scope={self.scope!r})"

def resolve(self, container: "Container") -> types.T_co | None:
value = self.fetch_context_value(container)
Expand All @@ -47,4 +49,4 @@ def fetch_context_value(self, container: "Container") -> types.T_co | object:
container = container.find_container(self.scope)
if container.closed:
raise exceptions.ContainerClosedError(container_scope=container.scope)
return container.context_registry.find_context(self._context_type)
return container.context_registry.find_context(self.context_type)
5 changes: 5 additions & 0 deletions tests/providers/test_context_provider.py
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Original file line number Diff line number Diff line change
Expand Up @@ -66,6 +66,11 @@ def test_context_provider_repr() -> None:
assert repr(provider) == "ContextProvider(context_type=<class 'str'>, scope=<Scope.REQUEST: 3>)"


def test_context_provider_exposes_context_type() -> None:
provider = providers.ContextProvider(context_type=datetime.datetime, scope=Scope.REQUEST)
assert provider.context_type is datetime.datetime


@pytest.mark.parametrize("value", [0, False, "", [], {}, 0.0])
def test_context_provider_returns_falsy_values(value: object) -> None:
context_type = type(value)
Expand Down