Add Jest + React Testing Library test suite#14
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ghostyappbeta[bot] wants to merge 2 commits intomainfrom
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Add Jest + React Testing Library test suite#14ghostyappbeta[bot] wants to merge 2 commits intomainfrom
ghostyappbeta[bot] wants to merge 2 commits intomainfrom
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- Install jest, @testing-library/react, @testing-library/jest-dom, @testing-library/user-event, jest-environment-jsdom, @types/jest, and identity-obj-proxy as dev dependencies - Create jest.config.ts using next/jest createJestConfig helper with jsdom environment, CSS module mocking, @/* path alias support, and amplify_outputs.json mock mapping - Create jest.setup.ts importing @testing-library/jest-dom - Create __mocks__/mock_amplify_outputs.json with minimal structure - Create __mocks__/styleMock.js for plain CSS imports - Add test and test:watch scripts to package.json Co-authored-by: ningkehu <168601733+ningkehu@users.noreply.github.com>
- Add 7 tests for App component (page.tsx): heading, button, link, success message, observeQuery subscription, todo display on data emission, and window.prompt + Todo.create on button click - Add 4 tests for RootLayout (layout.tsx): children rendering, html lang attribute, body font className, and metadata exports - Fix jest.config.ts moduleNameMapper to catch SWC-resolved amplify_outputs.json paths (next/jest SWC transforms @/ aliases before moduleNameMapper runs) Co-authored-by: ningkehu <168601733+ningkehu@users.noreply.github.com>
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Summary
Adds a complete test framework and test suite to the project, which previously had no tests at all.
Changes
Test framework setup:
@testing-library/react,@testing-library/jest-dom,@testing-library/user-event),jest-environment-jsdom,@types/jest, andidentity-obj-proxyjest.config.tsusingnext/jest.jswith JSDOM environment, CSS module mocking,@/*path alias support, andamplify_outputs.jsonmockjest.setup.tsimporting@testing-library/jest-dom__mocks__/mock_amplify_outputs.jsonand__mocks__/styleMock.js"test": "jest"and"test:watch": "jest --watch"scripts topackage.jsonComponent tests:
__tests__/app/page.test.tsx(7 tests): heading, button, link, success message rendering;observeQuery/subscribecalled on mount; todo items displayed from subscription; button click triggerswindow.promptthenTodo.create__tests__/app/layout.test.tsx(4 tests): children rendering,<html lang="en">,<body>with Inter font className, exported metadataTest results
All tests exercise actual component logic and would fail if corresponding code were changed.