useApprovalsSubdirectory() doesn't create the output directory in the expected location

Hello

From documentation, we can read:

Note that the sub-directory is created automatically and that it will be inside the directory containing the source code of the test, not the current working directory of the test process.

This is not what I get in my project:

We can see in the screenshot that the output_test_case is created in CMAKE_BINARY_DIR instead of CMAKE_SOURCE_DIR, as
we would expect because this is where tests.cpp is located. I have the same issue with Makefile and Ninja generators, btw.

Best regards
Pierre

Start with doc/Configuration.md and the implementation or entry point for useApprovalsSubdirectory(), then reproduce the behavior with the tests.cpp setup described in the issue. Verify that output_test_case is created beside the test source rather than in CMAKE_BINARY_DIR, including with Makefile and Ninja generators, and add or update coverage for the expected location.