Testing HTML Light DOM Web Components: Easier Than Expected!
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Light DOM web components simplify testing compared to Shadow DOM by allowing standard DOM queries without special utilities. The article shares practical testing patterns using Vitest, Testing Library, and Lit's templating for a legacy application modernization project. Key insights include using shared Lit html templates for
Table of contents
The web component testing stack we usedLight DOM web components simplified testingTesting web component eventsCloud Four’s latest insights and articles, straight to your inboxTesting hidden inputs generated by web componentsTesting both attribute and property APIsTyping web component referencesTests and Storybook stories shared Lit html templatesTesting for accessibilityTest file organizationDirectory structure patternsUsing a for / of loop to run repetitive test assertionsThinking critically about clicking various controls at onceAvoid leaking state between testsAdding basic dialog functionality to jsdomWrapping upMore resourcesSort: