Adding Anthropic support and test coverage

Author: Artui

pydantic_ai_slim/pydantic_ai/models/openai.py

@@ -1936,10 +1936,10 @@ async def _get_event_iterator(self) -> AsyncIterator[ModelResponseStreamEvent]:
                 )
                 if maybe_event is not None:  # pragma: no branch
                     yield maybe_event
-            elif isinstance(chunk, responses.ResponseMcpCallArgumentsDoneEvent):  # pragma: no cover
+            elif isinstance(chunk, responses.ResponseMcpCallArgumentsDoneEvent):
                 pass  # there's nothing we need to do here
 
-            elif isinstance(chunk, responses.ResponseMcpListToolsInProgressEvent):  # pragma: no cover
+            elif isinstance(chunk, responses.ResponseMcpListToolsInProgressEvent):
                 pass  # there's nothing we need to do here
 
             elif isinstance(chunk, responses.ResponseMcpListToolsCompletedEvent):
@@ -1954,7 +1954,7 @@ async def _get_event_iterator(self) -> AsyncIterator[ModelResponseStreamEvent]:
             elif isinstance(chunk, responses.ResponseMcpCallFailedEvent):  # pragma: no cover
                 pass  # there's nothing we need to do here
 
-            elif isinstance(chunk, responses.ResponseMcpCallCompletedEvent):  # pragma: no cover
+            elif isinstance(chunk, responses.ResponseMcpCallCompletedEvent):
                 pass  # there's nothing we need to do here
 
             else:  # pragma: no cover