add test coverage, async providers calling sync calls, async only client

Signed-off-by: leohoare <[email protected]>

tests/provider/test_in_memory_provider.py

@@ -154,7 +154,9 @@ async def test_should_resolve_list_flag_from_in_memory():
     )
     # When
     flag_sync = provider.resolve_object_details(flag_key="Key", default_value=[])
-    flag_async = provider.resolve_object_details(flag_key="Key", default_value=[])
+    flag_async = await provider.resolve_object_details_async(
+        flag_key="Key", default_value=[]
+    )
     # Then
     assert flag_sync == flag_async
     for flag in [flag_sync, flag_async]:

tests/provider/test_provider_compatibility.py

@@ -0,0 +1,196 @@
+import asyncio
+from typing import Optional, Union
+
+import pytest
+
+from openfeature.api import OpenFeatureClient, get_client, set_provider
+from openfeature.evaluation_context import EvaluationContext
+from openfeature.flag_evaluation import FlagResolutionDetails
+from openfeature.provider import AbstractProvider, Metadata
+
+
+class SynchronousProvider(AbstractProvider):
+    def get_metadata(self):
+        return Metadata(name="SynchronousProvider")
+
+    def get_provider_hooks(self):
+        return []
+
+    def resolve_boolean_details(
+        self,
+        flag_key: str,
+        default_value: bool,
+        evaluation_context: Optional[EvaluationContext] = None,
+    ) -> FlagResolutionDetails[bool]:
+        return FlagResolutionDetails(value=True)
+
+    def resolve_string_details(
+        self,
+        flag_key: str,
+        default_value: str,
+        evaluation_context: Optional[EvaluationContext] = None,
+    ) -> FlagResolutionDetails[str]:
+        return FlagResolutionDetails(value="string")
+
+    def resolve_integer_details(
+        self,
+        flag_key: str,
+        default_value: int,
+        evaluation_context: Optional[EvaluationContext] = None,
+    ) -> FlagResolutionDetails[int]:
+        return FlagResolutionDetails(value=1)
+
+    def resolve_float_details(
+        self,
+        flag_key: str,
+        default_value: float,
+        evaluation_context: Optional[EvaluationContext] = None,
+    ) -> FlagResolutionDetails[float]:
+        return FlagResolutionDetails(value=10.0)
+
+    def resolve_object_details(
+        self,
+        flag_key: str,
+        default_value: Union[dict, list],
+        evaluation_context: Optional[EvaluationContext] = None,
+    ) -> FlagResolutionDetails[Union[dict, list]]:
+        return FlagResolutionDetails(value={"key": "value"})
+
+
+@pytest.mark.parametrize(
+    "flag_type, default_value, get_method",
+    (
+        (bool, True, "get_boolean_value_async"),
+        (str, "string", "get_string_value_async"),
+        (int, 1, "get_integer_value_async"),
+        (float, 10.0, "get_float_value_async"),
+        (
+            dict,
+            {"key": "value"},
+            "get_object_value_async",
+        ),
+    ),
+)
+@pytest.mark.asyncio
+async def test_sync_provider_can_be_called_async(flag_type, default_value, get_method):
+    # Given
+    set_provider(SynchronousProvider(), "SynchronousProvider")
+    client = get_client("SynchronousProvider")
+    # When
+    async_callable = getattr(client, get_method)
+    flag = await async_callable(flag_key="Key", default_value=default_value)
+    # Then
+    assert flag is not None
+    assert flag == default_value
+    assert isinstance(flag, flag_type)
+
+
+@pytest.mark.asyncio
+async def test_sync_provider_can_be_extended_async():
+    # Given
+    class ExtendedAsyncProvider(SynchronousProvider):
+        async def resolve_boolean_details_async(
+            self,
+            flag_key: str,
+            default_value: bool,
+            evaluation_context: Optional[EvaluationContext] = None,
+        ) -> FlagResolutionDetails[bool]:
+            return FlagResolutionDetails(value=False)
+
+    set_provider(ExtendedAsyncProvider(), "ExtendedAsyncProvider")
+    client = get_client("ExtendedAsyncProvider")
+    # When
+    flag = await client.get_boolean_value_async(flag_key="Key", default_value=True)
+    # Then
+    assert flag is not None
+    assert flag is False
+
+
+# We're not allowing providers to only have async methods
+def test_sync_methods_enforced_for_async_providers():
+    # Given
+    class AsyncProvider(AbstractProvider):
+        def get_metadata(self):
+            return Metadata(name="AsyncProvider")
+
+        async def resolve_boolean_details_async(
+            self,
+            flag_key: str,
+            default_value: bool,
+            evaluation_context: Optional[EvaluationContext] = None,
+        ) -> FlagResolutionDetails[bool]:
+            return FlagResolutionDetails(value=True)
+
+    # When
+    with pytest.raises(TypeError) as exception:
+        set_provider(AsyncProvider(), "AsyncProvider")
+
+    # Then
+    # assert
+    assert str(exception.value).startswith(
+        "Can't instantiate abstract class AsyncProvider with abstract methods resolve_boolean_details"
+    )
+
+
+@pytest.mark.asyncio
+async def test_async_provider_not_implemented_exception_workaround():
+    # Given
+    class SyncNotImplementedProvider(AbstractProvider):
+        def get_metadata(self):
+            return Metadata(name="AsyncProvider")
+
+        async def resolve_boolean_details_async(
+            self,
+            flag_key: str,
+            default_value: bool,
+            evaluation_context: Optional[EvaluationContext] = None,
+        ) -> FlagResolutionDetails[bool]:
+            return FlagResolutionDetails(value=True)
+
+        def resolve_boolean_details(
+            self,
+            flag_key: str,
+            default_value: bool,
+            evaluation_context: Optional[EvaluationContext] = None,
+        ) -> FlagResolutionDetails[bool]:
+            raise NotImplementedError("Use the async method")
+
+        def resolve_string_details(
+            self,
+            flag_key: str,
+            default_value: str,
+            evaluation_context: Optional[EvaluationContext] = None,
+        ) -> FlagResolutionDetails[str]:
+            raise NotImplementedError("Use the async method")
+
+        def resolve_integer_details(
+            self,
+            flag_key: str,
+            default_value: int,
+            evaluation_context: Optional[EvaluationContext] = None,
+        ) -> FlagResolutionDetails[int]:
+            raise NotImplementedError("Use the async method")
+
+        def resolve_float_details(
+            self,
+            flag_key: str,
+            default_value: float,
+            evaluation_context: Optional[EvaluationContext] = None,
+        ) -> FlagResolutionDetails[float]:
+            raise NotImplementedError("Use the async method")
+
+        def resolve_object_details(
+            self,
+            flag_key: str,
+            default_value: Union[dict, list],
+            evaluation_context: Optional[EvaluationContext] = None,
+        ) -> FlagResolutionDetails[Union[dict, list]]:
+            raise NotImplementedError("Use the async method")
+
+    # When
+    set_provider(SyncNotImplementedProvider(), "SyncNotImplementedProvider")
+    client = get_client("SyncNotImplementedProvider")
+    flag = await client.get_boolean_value_async(flag_key="Key", default_value=False)
+    # Then
+    assert flag is not None
+    assert flag is True