[Bug] Documentation of the exact semantics and usage of `test_parameters` config section missing

Describe the bug

test_parameters is critical to python scripts but is not explained in detail in the manual.

It is covered by weak examples in sections:

9.5.2. Run Tests on the TH User Interface

To configure specific/custom parameters, please edit the project configuration to include the parameters in the session (test_parameters).

and

This is completely insufficient to understand the rules/usage, and does not offer any guidance for how to deal with large numbers of tests that have different parameters.

For example, different tests may require different arguments but the config is global and all arguments are given to all tests.

Furthermore, there is no validation that some tests need particular arguments (MANDATORY) to run (e.g. TC-IDM-10.2 needs --qr-code or --manal-code) and some tests require PIXIT.xxxx. The format of the parameters is also not validated. This makes running large numbers of automated Python tests error-prone.

Steps to reproduce the behavior

Read the docs as explained above

Expected behavior

Each field of test_parameters is documented for what it does, what format is legal, and how it works.
dut_config that are unambiguous are automatically used in the test_parameters without needing to copy them under a different name (e.g. thread-dataset-hex)
Handling of test arguments is validated by TH

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project-chip / certification-tool