Turn the smoke test into a real runtime safety net. Waybar is now built with
AddressSanitizer and exercised end to end in a headless compositor:
- Tier 0: run everything under ASan; fail on ASan reports and Gtk/GLib
criticals in the log (lib.sh assert_clean)
- Tier 1: per-module render matrix (modules.sh) — each headless-safe module
rendered in isolation
- Tier 2: pointer interaction (interact.sh) — inject clicks via sway, assert
on-click side effect and format-alt toggle; AT-SPI assertions (a11y.sh/.py)
check module labels semantically instead of by pixels
- Tier 3: layout matrix (positions.sh) — top/bottom/left + HiDPI scale 2;
second compositor run under labwc
Shared helpers extracted to lib.sh. Adds a workflow_dispatch `bless` input to
regenerate the golden reference in one click. Trigger push only on master to
avoid duplicate PR runs. AT-SPI and labwc steps are continue-on-error.
Blessed from the CI artifact of the passing headless run (Waybar / CI smoke
test / 12:34 on a pinned DejaVu Sans bar). Regenerate from a new artifact when
an intended visual change trips the comparison — see test/smoke/README.md.
The static custom modules used `exec: echo` (empty output), so the modules
rendered nothing and the bar strip was blank. Have exec print the label text
and use the default `{}` format.
Launch the real Waybar binary inside a headless, software-rendered sway
compositor and verify it actually runs and renders — something the unit
tests and build jobs never do.
- test/smoke/run.sh: boots sway (WLR_BACKENDS=headless, pixman), starts
waybar, asserts it stays alive with no fatal log, optionally grabs a
screenshot with grim
- level 1: real modules (clock/cpu/memory/disk) load without crashing
- level 2: deterministic config is screenshotted and checked to be non-blank
- level 3: screenshot compared to test/smoke/reference.png (fuzz 8%,
800px tolerance); screenshot + diff uploaded as artifacts
- .github/workflows/smoke.yml runs it on push/PR
The reference image must be blessed from a CI artifact (see test/smoke/README.md).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Alex