test: migrate from Web Test Runner to Vitest#21
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cristinecula merged 6 commits intomainfrom Feb 7, 2026
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- Replace WTR with Vitest for test infrastructure - Add dual project setup: unit tests (jsdom) and storybook tests (browser) - Migrate unit tests (fetch, path) to Vitest syntax with vi.* mocks - Convert UI tests (render, item-click, use-pref) to Storybook interaction tests - Add @storybook/addon-vitest integration for browser-based testing - Update package.json scripts: test, test:unit, test:storybook, test:watch NEO-927
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- Add @types/react for Storybook type definitions - Add skipLibCheck to tsconfig.json for Storybook type compatibility - Fix unused 'within' import in render.stories.ts - Fix window type casts in use-pref.stories.ts
- Create stories/helpers/render-hook.ts utility for testing Pion hooks - Use Storybook args pattern in render.stories.ts instead of window globals - Simplify use-pref.stories.ts using renderHook utility - Remove all window global usage from story tests
cristinecula
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Feb 6, 2026
This was referenced Feb 6, 2026
Replace local stories/helpers/render-hook.ts with @Neovici/testing@2.2.0 which now provides the same renderHook functionality for Pion hooks.
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@megheaiulian I removed the custom renderHook |
- Add HTML snapshots to RenderNavTest, RenderNavWithCallbacks, and RenderPaginationTest - Use vitest expect for snapshot assertions (storybook/test uses Chai which lacks snapshot support) - Snapshots capture DOM structure before user interactions
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Move snapshot assertions out of story play functions to avoid vitest expect being bundled into the deployed Storybook UI, which caused 'Cannot read properties of undefined' errors. The interaction tests remain and provide sufficient coverage.
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Feb 7, 2026
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🎉 This PR is included in version 1.6.2 🎉 The release is available on: Your semantic-release bot 📦🚀 |
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Summary
Changes
Infrastructure
vitest.config.tswith two projects:unit: jsdom environment for pure logic testsstorybook: browser mode with Playwright for UI tests.storybook/main.jsto include@storybook/addon-vitest.storybook/vitest.setup.tsfor Storybook project annotationspackage.jsonscripts:test,test:unit,test:storybook,test:watchDependencies
vitest,jsdom,@vitest/browser,@vitest/browser-playwright,@storybook/addon-vitest,playwrightsinon,@open-wc/testing,@open-wc/testing-helpers,@web/test-runner-playwright,@types/mocha,@neovici/testing,shadow-dom-testing-libraryTests
fetch.test.tsandpath.test.tsfrom Mocha/Chai/sinon to Vitestrender,item-click, anduse-preftests to Storybook interaction testsTest Results
All 41 tests pass:
NEO-927