Provide separate configurations for running tests with coverage

[thomthom]

Following up on conversion in this thread:
#22827 (comment)

I found that when I had --cov argument I wasn't able to debug my tests. No breakpoints would catch. That's why I was looking for separate arguments between doing a normal test run and running tests with coverage.

Not sure why the debugger wouldn't break when --cov was used though, bug?

I keep running into this.

I would to configure the coverage arguments when running tests with coverage so I can narrow down the scope of what is checked for coverage. But I don't want to add arguments that enables coverage in normal test runs. (Which conflicts when I'm debugging tests.)

#22827 (comment)

I just tested out "Run With Coverage" on my python project. I have the sources for my app in a sub-folder so my coveragerc contains:

[run]
source = myapp
omit = myapp/tests/*

However, when I use Run With Coverage it appear to inject --cov=. which in turn overrides my source config. The result of that is that coverage picks up python all python files from the root of my project, not just limited to ./myapp.

I've not found any way around for this. Is it a bug? Or have I missed a configuration?

What I think would work is a configuration setting for what vscode-python injects when running with coverage. The default is --cov=., but if we can override that it would help.

Maybe something like

{
  "python.testing.pytestCoverageArgs": "--cov=mysources", // Defaulting to "--cov=."
}

[eleanorjboyd]

added this request to an overarching issue about custom configs for testing: #21845