pkutaj/2023-07-17-How-to-Create-Dummy-Context-Manager-for-Python-Unit-Tests.md

## 2023-07-17-How-to-Create-Dummy-Context-Manager-for-Python-Unit-Tests.md

      
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              2023-07-17-How-to-Create-Dummy-Context-Manager-for-Python-Unit-Tests.md
            
          
Code
Explanation


from contextlib import nullcontext
Import the nullcontext context manager from the contextlib module.


monkeypatch.setattr(schema_patcher, "handle_patching", lambda _: nullcontext())
Replace the handle_patching function with a lambda function that returns a nullcontext object.


with push_and_pop_path(MODULE_PATH): schema_patcher.patch_schema(iglu)
Call the patch_schema function within a with statement that uses the push_and_pop_path context manager.
Code	Explanation
`from contextlib import nullcontext`	Import the `nullcontext` context manager from the `contextlib` module.
`monkeypatch.setattr(schema_patcher, "handle_patching", lambda _: nullcontext())`	Replace the `handle_patching` function with a lambda function that returns a `nullcontext` object.
`with push_and_pop_path(MODULE_PATH): schema_patcher.patch_schema(iglu)`	Call the `patch_schema` function within a `with` statement that uses the `push_and_pop_path` context manager.