Files
magpie/internal/gui/tests
..

Dropdown browser regression

menu-scroll.test.cjs loads the real HTML, CSS and JavaScript with isolated API fixtures. It checks session folder/model filters and the main model picker in Chromium and WebKit, including wheel, scrollbar track/thumb, keyboard selection and dismissal. It does not start the backend or read local user configuration.

click-scroll.test.cjs holds the rule that a click never moves the page (see "where the reader is" in app.js): on the Routing page, Live and a day picked in turn with the list scrolled to its end; a click whose handler sets scrollTop, grows the page above, redraws itself, or scrolls from a timer or a shared helper; a control under what it unrolls (data-unrolls) going down with it; a click that asks to go somewhere with scrollOnPurpose(e); the room kept at the foot going as the reader scrolls back; and the wheel.

With Node.js and Playwright available:

node --test internal/gui/tests/menu-scroll.test.cjs internal/gui/tests/click-scroll.test.cjs

If Playwright is installed outside the repository, set NODE_PATH to the directory containing its package. The suite uses Playwright's Chromium and WebKit binaries (playwright install chromium webkit). No frontend dependency is needed by the app itself. Tested with Playwright 1.63.0.

Set BROWSER=chromium or BROWSER=webkit for one engine. Set ARTIFACT_DIR to an external directory to retain screenshots and Playwright traces, including failed assertions. These browser checks run separately from make test.