Maintain existing tests for Walkontable, Handsontable's table rendering engine. The skill explains its separate test commands and covers frozen rows and columns, visible area calculations, scroll alignment, and pitfalls that can hide failures or produce misleading results.
Use when writing tests for the Walkontable rendering engine - has its own separate test pipeline, runner, and configuration distinct from main Handsontable E2E tests
Review the instructions the agent will receive before you install.
Walkontable follows the same freeze as the main suite. Its Playwright home is
tests/e2e/walkontable/(page objects intests/fixtures/pages/walkontable/). Maintenance edits to existing*.spec.jsare allowed; new or flaky walkontable tests go to Playwright (the presence gate blocks a new walkontable*.spec.js). In CI the legacy Jasmine/Puppeteer walkontable job and the Playwright e2e job run in parallel. This guide is for maintaining the frozen Jasmine specs.
npm run test:walkontable --prefix handsontable (the test/spec/ specs). test:e2e does not pick them up.src/3rdparty/walkontable/test/
test/spec/: Jasmine + Puppeteer with a separate Rspack config and bootstrap. Only test:walkontable runs them.test/unit/: Jest tests for calculators, filters, renderers, utilities (48 *.unit.ts/*.unit.js files). The core jest.config.js picks them up, so npm run test:unit and the core Unit / test CI job run them, and test:walkontable does not.it() callbacks that call rendering APIs are async and await those calls.overlay/, scroll/, selection/, renderer/, table/, viewport.spec.js); place new ones in the matching directory.forEach; arr.push(...largeArray) overflows the stack.test:e2e.test/spec/ passes under test:walkontable and test/unit/ under the core test:unit.$el.css('overflow-x', '') leaves an inline overflow-x in this harness, so the "clip removed" branch asserts against the wrong layout. Write el.style.overflowX = '' and assert the intermediate fact (getComputedStyle(el).overflowX === 'visible') before the behavior.expected/actual was a cyclic object (toBe(window), toEqual([overlay, ...])) used to be dropped at the Puppeteer bridge (Running 16 specs., then 15 specs, 0 failures, exit 0; the getOverlays spec sat like that from #12951). test/helpers/jasmine-bridge-reporter.js now reports it as a failure ([unserializable Window]). If a count comes up short, compare the Running N specs. line with the summary via npm run test:walkontable -- --testPathPattern=<file> --verbose.rowHeightsUniform/columnWidthsUniform in a bare Walkontable spec and asserting scrollbar-dependent row/column counts: the bare harness overflows content without a real scrollbar while the single-pass layout snapshot predicts one, so they diverge. Assert the snapshot booleans directly, or use a fixture that renders a real scrollbar.No reviews yet. Tell others what you thought.
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