Merge pull request #1829 from matino:expose_credential_service

PiperOrigin-RevId: 782150305

src/google/adk/tools/agent_tool.py

@@ -116,6 +116,7 @@ class AgentTool(BaseTool):
         artifact_service=ForwardingArtifactService(tool_context),
         session_service=InMemorySessionService(),
         memory_service=InMemoryMemoryService(),
+        credential_service=tool_context._invocation_context.credential_service,
     )
     session = await runner.session_service.create_session(
         app_name=self.agent.name,

tests/unittests/agents/test_readonly_context.py

@@ -11,7 +11,6 @@ def mock_invocation_context():
   mock_context.invocation_id = "test-invocation-id"
   mock_context.agent.name = "test-agent-name"
   mock_context.session.state = {"key1": "value1", "key2": "value2"}
-
   return mock_context