test(functions): add missing test cases

[nyoungstudios]

Description

This repo has a handful of functions that install various tools.

However, not all of them have test cases.

The documentation for how to write a test case is here.

How to do this

1. Add a folder in the test case resource directory that matches the function you are testing.
2. Follow the documentation for how to write a test case.
3. Open a PR and check if the GitHub Action workflows pass

Examples

Here are some examples:

#22
#24
#25