5c41e85ae9
These tests were very simple before and now this should result in more code coverage without affecting test performance. The only tricky thing was testing the `--missing` option without actually installing a package using `install_test_formula` because that is very slow (around 10 seconds on my machine). I ended up just writing the tab to a plausible keg directory for each package I wanted to "install". This allows us to test the behavior while also not increasing CI time by ~20 seconds (though it'd probably be faster on CI than my local machine).
Library
This directory contains all the code run by the official brew command in Homebrew and all formulae (package descriptions) in taps (repositories containing formulae) in Taps subdirectories.