Add parameter name to validation errors

[bernt-matthias]

This could be useful for tool testing. So far it was unclear which parameter had the validation error.

Not sure if this is also user facing .. then the parameter name might not be helpful.

How to test the changes?

(Select all options that apply)

• I've included appropriate automated tests.
• This is a refactoring of components with existing test coverage.
• Instructions for manual testing are as follows:
  1. [add testing steps and prerequisites here if you didn't write automated tests covering all your changes]

License

• I agree to license these and all my past contributions to the core galaxy codebase under the MIT license.

[nsoranzo]

The unit test (actually doc test) failures in lib/galaxy/tools/parameters/validation.py are relevant, the others should be fixed by #15441 .

[bernt-matthias]

The unit test (actually doc test) failures in lib/galaxy/tools/parameters/validation.py are relevant, the others should be fixed by #15441 .

Thanks for checking. Should be easy to fix. Do you think that these should be "proper" unit tests? I created those back in the days when I knew even less about testing than today :)

[nsoranzo]

It'd be probably better but I don't have strong feelings on that.

[bernt-matthias]

Good to go from my side.

[mvdbeek]

Thanks, really appreciate moving the tests to proper unit tests.