tools: Add test coverage html output

[fredcarle]

RELEVANT ISSUE(S)

Resolves #465

DESCRIPTION

Instead of relying on codecov to inspect our code coverage, we can do it locally using -coverprofile. This PR adds a make command to simplify the process.

HOW HAS THIS BEEN TESTED?

This was tested by running the new make command and insuring that the html output was displayed and that temporary files were cleaned up.

make test:coverage-html path="./api/..."

CHECKLIST:

• I have commented the code, particularly in hard-to-understand areas.
• I have made corresponding changes to the repo-held documentation.
• I have made sure that the PR title adheres to the conventional commit style (subset of the ones we use can be found under: tools/configs/chglog/config.yml

ENVIRONMENT / OS THIS WAS TESTED ON?

Please specify which of the following was this tested on (remove or add your own):

• Arch Linux
• Debian Linux
• MacOS
• Windows

[shahzadlone]

Made some comments, most notable is the path inconsistency between macos and linux.

I generally think of test: commit label as when we add tests to the code. i.e. integration tests or unit tests. For stuff related to code coverage, make rules and these "external" tasks I like to use tools : label in the title.

[fredcarle]

Made some comments, most notable is the path inconsistency between macos and linux.

I generally think of test: commit label as when we add tests to the code. i.e. integration tests or unit tests. For stuff related to code coverage, make rules and these "external" tasks I like to use tools : label in the title.

I think it was just a usage issue for the path. See my comment above.

Thanks for clarifying. I'll change it to tools.