1. Fragment filtering test: Added proper assertion for MCPToolWrapper call
and verified the mock tool is returned in the result list.
2. Logger patching tests: Changed from patching instance method to patching
class method to avoid Pydantic's __delattr__ restriction. This prevents
AttributeError when the patch context manager tries to restore the
original attribute.
Co-Authored-By: João <joao@crewai.com>
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