Adding unit tests

Author: amri369

tests/mcp/helpers.py

@@ -137,7 +137,7 @@ async def read_resource(self, uri: AnyUrl) -> ReadResourceResult:
             if resource.uri == uri:
                 return ReadResourceResult(**resource.model_dump(), contents=[])
 
-        raise KeyError
+        raise KeyError(f"Resource {uri} not found")
 
     def add_resource(self, uri: AnyUrl, name: str, description: str | None = None):
         """Add a resource to the fake server"""

tests/mcp/test_resources_server.py

@@ -40,6 +40,6 @@ async def test_read_resource_not_found():
     """Test getting a resource that doesn't exist"""
     server = FakeMCPServer()
 
-    uri = AnyUrl("docs://api/reference")
+    uri = "docs://api/reference"
     with pytest.raises(KeyError, match=f"Resource {uri} not found"):
-        await server.read_resource(uri)
+        await server.read_resource(AnyUrl(uri))