Debugging tests ================ You can use the `TEST_FILTER` environment variable, e.g., `TEST_FILTER=xxx` will filter test named `test_xxx`. Setting `TEST_GECKODRIVER_TRACE` to any value will make Selenium dump a trace log for debugging. You can control running headless or not with `TEST_NO_HEADLESS`. Currently, the copy/paste image test required NOT to run headless. More useful for local repro, you can set `TEST_NO_QUIT` if you need to keep inspecting the browser at the end of a test. Data URL containing the diff screenshot will be dumped to stdout/stderr when `TEST_DUMP_DIFF` is set in the environment. A recording of the desktop can be captured via GNOME Screencast feature by passing `TEST_RECORD_SCREEN=true` in the enviromnent. Upon completion of the task it should upload a WebM file. Updating reference screenshots ============================== - `./mach try fuzzy --full --env TEST_COLLECT_REFERENCE=1 -q "'snap-upstream-test"` - note the successfull task id you want to source - you need curl and jq installed - ./update-references.sh