Simple and complete React DOM testing utilities that encourage good testing\npractices.
\n\n \n\n[**Read The Docs**](https://testing-library.com/react) |\n[Edit the docs](https://github.com/testing-library/testing-library-docs)\n\n \n
\n\n\n\n\n[![Build Status][build-badge]][build]\n[![Code Coverage][coverage-badge]][coverage]\n[![version][version-badge]][package]\n[![downloads][downloads-badge]][npmtrends]\n[![MIT License][license-badge]][license]\n[![All Contributors][all-contributors-badge]](#contributors)\n[![PRs Welcome][prs-badge]][prs]\n[![Code of Conduct][coc-badge]][coc]\n[![Discord][discord-badge]][discord]\n\n[![Watch on GitHub][github-watch-badge]][github-watch]\n[![Star on GitHub][github-star-badge]][github-star]\n[![Tweet][twitter-badge]][twitter]\n\n\n
\n\n## Table of Contents\n\n\n\n\n- [The problem](#the-problem)\n- [The solution](#the-solution)\n- [Installation](#installation)\n - [Suppressing unnecessary warnings on React DOM 16.8](#suppressing-unnecessary-warnings-on-react-dom-168)\n- [Examples](#examples)\n - [Basic Example](#basic-example)\n - [Complex Example](#complex-example)\n - [More Examples](#more-examples)\n- [Hooks](#hooks)\n- [Guiding Principles](#guiding-principles)\n- [Docs](#docs)\n- [Issues](#issues)\n - [🐛 Bugs](#-bugs)\n - [💡 Feature Requests](#-feature-requests)\n - [❓ Questions](#-questions)\n- [Contributors](#contributors)\n- [LICENSE](#license)\n\n\n\n## The problem\n\nYou want to write maintainable tests for your React components. As a part of\nthis goal, you want your tests to avoid including implementation details of your\ncomponents and rather focus on making your tests give you the confidence for\nwhich they are intended. As part of this, you want your testbase to be\nmaintainable in the long run so refactors of your components (changes to\nimplementation but not functionality) don't break your tests and slow you and\nyour team down.\n\n## The solution\n\nThe `React Testing Library` is a very lightweight solution for testing React\ncomponents. It provides light utility functions on top of `react-dom` and\n`react-dom/test-utils`, in a way that encourages better testing practices. Its\nprimary guiding principle is:\n\n> [The more your tests resemble the way your software is used, the more\n> confidence they can give you.][guiding-principle]\n\n## Installation\n\nThis module is distributed via [npm][npm] which is bundled with [node][node] and\nshould be installed as one of your project's `devDependencies`. \nStarting from RTL version 16, you'll also need to install\n`@testing-library/dom`:\n\n```\nnpm install --save-dev @testing-library/react @testing-library/dom\n```\n\nor\n\nfor installation via [yarn][yarn]\n\n```\nyarn add --dev @testing-library/react @testing-library/dom\n```\n\nThis library has `peerDependencies` listings for `react`, `react-dom` and\nstarting from RTL version 16 also `@testing-library/dom`.\n\n_React Testing Library versions 13+ require React v18. If your project uses an\nolder version of React, be sure to install version 12:_\n\n```\nnpm install --save-dev @testing-library/react@12\n\n\nyarn add --dev @testing-library/react@12\n```\n\nYou may also be interested in installing `@testing-library/jest-dom` so you can\nuse [the custom jest matchers](https://github.com/testing-library/jest-dom).\n\n> [**Docs**](https://testing-library.com/react)\n\n### Suppressing unnecessary warnings on React DOM 16.8\n\nThere is a known compatibility issue with React DOM 16.8 where you will see the\nfollowing warning:\n\n```\nWarning: An update to ComponentName inside a test was not wrapped in act(...).\n```\n\nIf you cannot upgrade to React DOM 16.9, you may suppress the warnings by adding\nthe following snippet to your test configuration\n([learn more](https://github.com/testing-library/react-testing-library/issues/281)):\n\n```js\n// this is just a little hack to silence a warning that we'll get until we\n// upgrade to 16.9. See also: https://github.com/facebook/react/pull/14853\nconst originalError = console.error\nbeforeAll(() => {\n console.error = (...args) => {\n if (/Warning.*not wrapped in act/.test(args[0])) {\n return\n }\n originalError.call(console, ...args)\n }\n})\n\nafterAll(() => {\n console.error = originalError\n})\n```\n\n## Examples\n\n### Basic Example\n\n```jsx\n// hidden-message.js\nimport * as React from 'react'\n\n// NOTE: React Testing Library works well with React Hooks and classes.\n// Your tests will be the same regardless of how you write your components.\nfunction HiddenMessage({children}) {\n const [showMessage, setShowMessage] = React.useState(false)\n return (\n
\n \n setShowMessage(e.target.checked)}\n checked={showMessage}\n />\n {showMessage ? children : null}\n
\n )\n}\n\nexport default HiddenMessage\n```\n\n```jsx\n// __tests__/hidden-message.js\n// these imports are something you'd normally configure Jest to import for you\n// automatically. Learn more in the setup docs: https://testing-library.com/docs/react-testing-library/setup#cleanup\nimport '@testing-library/jest-dom'\n// NOTE: jest-dom adds handy assertions to Jest and is recommended, but not required\n\nimport * as React from 'react'\nimport {render, fireEvent, screen} from '@testing-library/react'\nimport HiddenMessage from '../hidden-message'\n\ntest('shows the children when the checkbox is checked', () => {\n const testMessage = 'Test Message'\n render({testMessage})\n\n // query* functions will return the element or null if it cannot be found\n // get* functions will return the element or throw an error if it cannot be found\n expect(screen.queryByText(testMessage)).toBeNull()\n\n // the queries can accept a regex to make your selectors more resilient to content tweaks and changes.\n fireEvent.click(screen.getByLabelText(/show/i))\n\n // .toBeInTheDocument() is an assertion that comes from jest-dom\n // otherwise you could use .toBeDefined()\n expect(screen.getByText(testMessage)).toBeInTheDocument()\n})\n```\n\n### Complex Example\n\n```jsx\n// login.js\nimport * as React from 'react'\n\nfunction Login() {\n const [state, setState] = React.useReducer((s, a) => ({...s, ...a}), {\n resolved: false,\n loading: false,\n error: null,\n })\n\n function handleSubmit(event) {\n event.preventDefault()\n const {usernameInput, passwordInput} = event.target.elements\n\n setState({loading: true, resolved: false, error: null})\n\n window\n .fetch('/api/login', {\n method: 'POST',\n headers: {'Content-Type': 'application/json'},\n body: JSON.stringify({\n username: usernameInput.value,\n password: passwordInput.value,\n }),\n })\n .then(r => r.json().then(data => (r.ok ? data : Promise.reject(data))))\n .then(\n user => {\n setState({loading: false, resolved: true, error: null})\n window.localStorage.setItem('token', user.token)\n },\n error => {\n setState({loading: false, resolved: false, error: error.message})\n },\n )\n }\n\n return (\n
\n \n {state.error ?
{state.error}
: null}\n {state.resolved ? (\n
Congrats! You're signed in!
\n ) : null}\n
\n )\n}\n\nexport default Login\n```\n\n```jsx\n// __tests__/login.js\n// again, these first two imports are something you'd normally handle in\n// your testing framework configuration rather than importing them in every file.\nimport '@testing-library/jest-dom'\nimport * as React from 'react'\n// import API mocking utilities from Mock Service Worker.\nimport {rest} from 'msw'\nimport {setupServer} from 'msw/node'\n// import testing utilities\nimport {render, fireEvent, screen} from '@testing-library/react'\nimport Login from '../login'\n\nconst fakeUserResponse = {token: 'fake_user_token'}\nconst server = setupServer(\n rest.post('/api/login', (req, res, ctx) => {\n return res(ctx.json(fakeUserResponse))\n }),\n)\n\nbeforeAll(() => server.listen())\nafterEach(() => {\n server.resetHandlers()\n window.localStorage.removeItem('token')\n})\nafterAll(() => server.close())\n\ntest('allows the user to login successfully', async () => {\n render()\n\n // fill out the form\n fireEvent.change(screen.getByLabelText(/username/i), {\n target: {value: 'chuck'},\n })\n fireEvent.change(screen.getByLabelText(/password/i), {\n target: {value: 'norris'},\n })\n\n fireEvent.click(screen.getByText(/submit/i))\n\n // just like a manual tester, we'll instruct our test to wait for the alert\n // to show up before continuing with our assertions.\n const alert = await screen.findByRole('alert')\n\n // .toHaveTextContent() comes from jest-dom's assertions\n // otherwise you could use expect(alert.textContent).toMatch(/congrats/i)\n // but jest-dom will give you better error messages which is why it's recommended\n expect(alert).toHaveTextContent(/congrats/i)\n expect(window.localStorage.getItem('token')).toEqual(fakeUserResponse.token)\n})\n\ntest('handles server exceptions', async () => {\n // mock the server error response for this test suite only.\n server.use(\n rest.post('/api/login', (req, res, ctx) => {\n return res(ctx.status(500), ctx.json({message: 'Internal server error'}))\n }),\n )\n\n render()\n\n // fill out the form\n fireEvent.change(screen.getByLabelText(/username/i), {\n target: {value: 'chuck'},\n })\n fireEvent.change(screen.getByLabelText(/password/i), {\n target: {value: 'norris'},\n })\n\n fireEvent.click(screen.getByText(/submit/i))\n\n // wait for the error message\n const alert = await screen.findByRole('alert')\n\n expect(alert).toHaveTextContent(/internal server error/i)\n expect(window.localStorage.getItem('token')).toBeNull()\n})\n```\n\n> We recommend using [Mock Service Worker](https://github.com/mswjs/msw) library\n> to declaratively mock API communication in your tests instead of stubbing\n> `window.fetch`, or relying on third-party adapters.\n\n### More Examples\n\n> We're in the process of moving examples to the\n> [docs site](https://testing-library.com/docs/example-codesandbox)\n\nYou'll find runnable examples of testing with different libraries in\n[the `react-testing-library-examples` codesandbox](https://codesandbox.io/s/github/kentcdodds/react-testing-library-examples).\nSome included are:\n\n- [`react-redux`](https://codesandbox.io/s/github/kentcdodds/react-testing-library-examples/tree/main/?fontsize=14&module=%2Fsrc%2F__tests__%2Freact-redux.js&previewwindow=tests)\n- [`react-router`](https://codesandbox.io/s/github/kentcdodds/react-testing-library-examples/tree/main/?fontsize=14&module=%2Fsrc%2F__tests__%2Freact-router.js&previewwindow=tests)\n- [`react-context`](https://codesandbox.io/s/github/kentcdodds/react-testing-library-examples/tree/main/?fontsize=14&module=%2Fsrc%2F__tests__%2Freact-context.js&previewwindow=tests)\n\n## Hooks\n\nIf you are interested in testing a custom hook, check out [React Hooks Testing\nLibrary][react-hooks-testing-library].\n\n> NOTE: it is not recommended to test single-use custom hooks in isolation from\n> the components where it's being used. It's better to test the component that's\n> using the hook rather than the hook itself. The `React Hooks Testing Library`\n> is intended to be used for reusable hooks/libraries.\n\n## Guiding Principles\n\n> [The more your tests resemble the way your software is used, the more\n> confidence they can give you.][guiding-principle]\n\nWe try to only expose methods and utilities that encourage you to write tests\nthat closely resemble how your React components are used.\n\nUtilities are included in this project based on the following guiding\nprinciples:\n\n1. If it relates to rendering components, it deals with DOM nodes rather than\n component instances, nor should it encourage dealing with component\n instances.\n2. It should be generally useful for testing individual React components or\n full React applications. While this library is focused on `react-dom`,\n utilities could be included even if they don't directly relate to\n `react-dom`.\n3. Utility implementations and APIs should be simple and flexible.\n\nMost importantly, we want React Testing Library to be pretty light-weight,\nsimple, and easy to understand.\n\n## Docs\n\n[**Read The Docs**](https://testing-library.com/react) |\n[Edit the docs](https://github.com/testing-library/testing-library-docs)\n\n## Issues\n\nLooking to contribute? Look for the [Good First Issue][good-first-issue] label.\n\n### 🐛 Bugs\n\nPlease file an issue for bugs, missing documentation, or unexpected behavior.\n\n[**See Bugs**][bugs]\n\n### 💡 Feature Requests\n\nPlease file an issue to suggest new features. Vote on feature requests by adding\na 👍. This helps maintainers prioritize what to work on.\n\n[**See Feature Requests**][requests]\n\n### ❓ Questions\n\nFor questions related to using the library, please visit a support community\ninstead of filing an issue on GitHub.\n\n- [Discord][discord]\n- [Stack Overflow][stackoverflow]\n\n## Contributors\n\nThanks goes to these people ([emoji key][emojis]):\n\n\n\n\n
\n\n\n\n\n\n\nThis project follows the [all-contributors][all-contributors] specification.\nContributions of any kind welcome!\n\n## LICENSE\n\n[MIT](LICENSE)\n\n\n\n[npm]: https://www.npmjs.com/\n[yarn]: https://classic.yarnpkg.com\n[node]: https://nodejs.org\n[build-badge]: https://img.shields.io/github/actions/workflow/status/testing-library/react-testing-library/validate.yml?branch=main&logo=github\n[build]: https://github.com/testing-library/react-testing-library/actions?query=workflow%3Avalidate\n[coverage-badge]: https://img.shields.io/codecov/c/github/testing-library/react-testing-library.svg?style=flat-square\n[coverage]: https://codecov.io/github/testing-library/react-testing-library\n[version-badge]: https://img.shields.io/npm/v/@testing-library/react.svg?style=flat-square\n[package]: https://www.npmjs.com/package/@testing-library/react\n[downloads-badge]: https://img.shields.io/npm/dm/@testing-library/react.svg?style=flat-square\n[npmtrends]: http://www.npmtrends.com/@testing-library/react\n[license-badge]: https://img.shields.io/npm/l/@testing-library/react.svg?style=flat-square\n[license]: https://github.com/testing-library/react-testing-library/blob/main/LICENSE\n[prs-badge]: https://img.shields.io/badge/PRs-welcome-brightgreen.svg?style=flat-square\n[prs]: http://makeapullrequest.com\n[coc-badge]: https://img.shields.io/badge/code%20of-conduct-ff69b4.svg?style=flat-square\n[coc]: https://github.com/testing-library/react-testing-library/blob/main/CODE_OF_CONDUCT.md\n[github-watch-badge]: https://img.shields.io/github/watchers/testing-library/react-testing-library.svg?style=social\n[github-watch]: https://github.com/testing-library/react-testing-library/watchers\n[github-star-badge]: https://img.shields.io/github/stars/testing-library/react-testing-library.svg?style=social\n[github-star]: https://github.com/testing-library/react-testing-library/stargazers\n[twitter]: https://twitter.com/intent/tweet?text=Check%20out%20react-testing-library%20by%20%40@TestingLib%20https%3A%2F%2Fgithub.com%2Ftesting-library%2Freact-testing-library%20%F0%9F%91%8D\n[twitter-badge]: https://img.shields.io/twitter/url/https/github.com/testing-library/react-testing-library.svg?style=social\n[emojis]: https://github.com/all-contributors/all-contributors#emoji-key\n[all-contributors]: https://github.com/all-contributors/all-contributors\n[all-contributors-badge]: https://img.shields.io/github/all-contributors/testing-library/react-testing-library?color=orange&style=flat-square\n[guiding-principle]: https://twitter.com/kentcdodds/status/977018512689455106\n[bugs]: https://github.com/testing-library/react-testing-library/issues?q=is%3Aissue+is%3Aopen+label%3Abug+sort%3Acreated-desc\n[requests]: https://github.com/testing-library/react-testing-library/issues?q=is%3Aissue+sort%3Areactions-%2B1-desc+label%3Aenhancement+is%3Aopen\n[good-first-issue]: https://github.com/testing-library/react-testing-library/issues?utf8=✓&q=is%3Aissue+is%3Aopen+sort%3Areactions-%2B1-desc+label%3A\"good+first+issue\"+\n[discord-badge]: https://img.shields.io/discord/723559267868737556.svg?color=7389D8&labelColor=6A7EC2&logo=discord&logoColor=ffffff&style=flat-square\n[discord]: https://discord.gg/testing-library\n[stackoverflow]: https://stackoverflow.com/questions/tagged/react-testing-library\n[react-hooks-testing-library]: https://github.com/testing-library/react-hooks-testing-library\n\n\n"
},
{
"path": "codecov.yml",
"content": "coverage:\n status:\n project:\n default:\n # basic\n target: 100%\n threshold: 0%\n flags:\n - canary\n - experimental\n - latest\n branches:\n - main\n - 12.x\n if_ci_failed: success\n if_not_found: failure\n informational: false\n only_pulls: false\ngithub_checks:\n annotations: true\n"
},
{
"path": "dont-cleanup-after-each.js",
"content": "process.env.RTL_SKIP_AUTO_CLEANUP = true\n"
},
{
"path": "jest.config.js",
"content": "const {jest: jestConfig} = require('kcd-scripts/config')\n\nmodule.exports = Object.assign(jestConfig, {\n coverageThreshold: {\n ...jestConfig.coverageThreshold,\n // Full coverage across the build matrix (React 18, 19) but not in a single job\n // Full coverage is checked via codecov\n './src/act-compat': {\n branches: 90,\n },\n './src/pure': {\n // minimum coverage of jobs using React 18 and 19\n branches: 95,\n functions: 88,\n lines: 92,\n statements: 92,\n },\n },\n})\n"
},
{
"path": "other/MAINTAINING.md",
"content": "# Maintaining\n\nThis is documentation for maintainers of this project.\n\n## Code of Conduct\n\nPlease review, understand, and be an example of it. Violations of the code of\nconduct are taken seriously, even (especially) for maintainers.\n\n## Issues\n\nWe want to support and build the community. We do that best by helping people\nlearn to solve their own problems. We have an issue template and hopefully most\nfolks follow it. If it's not clear what the issue is, invite them to create a\nminimal reproduction of what they're trying to accomplish or the bug they think\nthey've found.\n\nOnce it's determined that a code change is necessary, point people to\n[makeapullrequest.com](http://makeapullrequest.com) and invite them to make a\npull request. If they're the one who needs the feature, they're the one who can\nbuild it. If they need some hand holding and you have time to lend a hand,\nplease do so. It's an investment into another human being, and an investment\ninto a potential maintainer.\n\nRemember that this is open source, so the code is not yours, it's ours. If\nsomeone needs a change in the codebase, you don't have to make it happen\nyourself. Commit as much time to the project as you want/need to. Nobody can ask\nany more of you than that.\n\n## Pull Requests\n\nAs a maintainer, you're fine to make your branches on the main repo or on your\nown fork. Either way is fine.\n\nWhen we receive a pull request, a github action is kicked off automatically (see\nthe `.github/workflows/validate.yml` for what runs in the action). We avoid\nmerging anything that breaks the validate action.\n\nPlease review PRs and focus on the code rather than the individual. You never\nknow when this is someone's first ever PR and we want their experience to be as\npositive as possible, so be uplifting and constructive.\n\nWhen you merge the pull request, 99% of the time you should use the\n[Squash and merge](https://help.github.com/articles/merging-a-pull-request/)\nfeature. This keeps our git history clean, but more importantly, this allows us\nto make any necessary changes to the commit message so we release what we want\nto release. See the next section on Releases for more about that.\n\n## Release\n\nOur releases are automatic. They happen whenever code lands into `main`. A\ngithub action gets kicked off and if it's successful, a tool called\n[`semantic-release`](https://github.com/semantic-release/semantic-release) is\nused to automatically publish a new release to npm as well as a changelog to\nGitHub. It is only able to determine the version and whether a release is\nnecessary by the git commit messages. With this in mind, **please brush up on\n[the commit message convention][commit] which drives our releases.**\n\n> One important note about this: Please make sure that commit messages do NOT\n> contain the words \"BREAKING CHANGE\" in them unless we want to push a major\n> version. I've been burned by this more than once where someone will include\n> \"BREAKING CHANGE: None\" and it will end up releasing a new major version. Not\n> a huge deal honestly, but kind of annoying...\n\n## Thanks!\n\nThank you so much for helping to maintain this project!\n\n[commit]:\n https://github.com/conventional-changelog-archived-repos/conventional-changelog-angular/blob/ed32559941719a130bb0327f886d6a32a8cbc2ba/convention.md\n"
},
{
"path": "other/USERS.md",
"content": "# Users\n\nIf you or your company uses this project, add your name to this list! Eventually\nwe may have a website to showcase these (wanna build it!?)\n\n> No users have been added yet!\n\n\n"
},
{
"path": "other/design files/README.txt",
"content": "# Cheat sheet design\n\nThe cheat sheet document has been created using the desktop publishing software called Affinity Publisher, the original source file can be found in this folder\n\n## Fonts used\n\n- Menlo\n- Arial\n\n## Standard distances\n\n15pt between boxes\n8pt margin from box edge to inner text"
},
{
"path": "other/manual-releases.md",
"content": "# manual-releases\n\nThis project has an automated release set up. So things are only released when\nthere are useful changes in the code that justify a release. But sometimes\nthings get messed up one way or another and we need to trigger the release\nourselves. When this happens, simply bump the number below and commit that with\nthe following commit message based on your needs:\n\n**Major**\n\n```\nfix(release): manually release a major version\n\nThere was an issue with a major release, so this manual-releases.md\nchange is to release a new major version.\n\nReference: #\n\nBREAKING CHANGE: \n```\n\n**Minor**\n\n```\nfeat(release): manually release a minor version\n\nThere was an issue with a minor release, so this manual-releases.md\nchange is to release a new minor version.\n\nReference: #\n```\n\n**Patch**\n\n```\nfix(release): manually release a patch version\n\nThere was an issue with a patch release, so this manual-releases.md\nchange is to release a new patch version.\n\nReference: #\n```\n\nThe number of times we've had to do a manual release is: 5\n"
},
{
"path": "package.json",
"content": "{\n \"name\": \"@testing-library/react\",\n \"version\": \"0.0.0-semantically-released\",\n \"description\": \"Simple and complete React DOM testing utilities that encourage good testing practices.\",\n \"main\": \"dist/index.js\",\n \"types\": \"types/index.d.ts\",\n \"module\": \"dist/@testing-library/react.esm.js\",\n \"engines\": {\n \"node\": \">=18\"\n },\n \"scripts\": {\n \"prebuild\": \"rimraf dist\",\n \"build\": \"npm-run-all --parallel build:main build:bundle:main build:bundle:pure\",\n \"build:bundle:main\": \"dotenv -e .bundle.main.env kcd-scripts build -- --bundle --no-clean --no-ts-defs\",\n \"build:bundle:pure\": \"dotenv -e .bundle.main.env -e .bundle.pure.env kcd-scripts build -- --bundle --no-clean --no-ts-defs\",\n \"build:main\": \"kcd-scripts build --no-clean --no-ts-defs\",\n \"format\": \"kcd-scripts format\",\n \"install:csb\": \"npm install\",\n \"lint\": \"kcd-scripts lint\",\n \"setup\": \"npm install && npm run validate -s\",\n \"test\": \"kcd-scripts test\",\n \"test:update\": \"npm test -- --updateSnapshot --coverage\",\n \"typecheck\": \"tsc --project tsconfig.json\",\n \"validate\": \"kcd-scripts validate\"\n },\n \"files\": [\n \"dist\",\n \"dont-cleanup-after-each.js\",\n \"pure.js\",\n \"pure.d.ts\",\n \"types/*.d.ts\"\n ],\n \"keywords\": [\n \"testing\",\n \"react\",\n \"ui\",\n \"dom\",\n \"jsdom\",\n \"unit\",\n \"integration\",\n \"functional\",\n \"end-to-end\",\n \"e2e\"\n ],\n \"author\": \"Kent C. Dodds (https://kentcdodds.com)\",\n \"license\": \"MIT\",\n \"dependencies\": {\n \"@babel/runtime\": \"^7.12.5\"\n },\n \"devDependencies\": {\n \"@testing-library/dom\": \"^10.0.0\",\n \"@testing-library/jest-dom\": \"^5.11.6\",\n \"@types/react\": \"^19.0.0\",\n \"@types/react-dom\": \"^19.0.0\",\n \"chalk\": \"^4.1.2\",\n \"dotenv-cli\": \"^4.0.0\",\n \"jest-diff\": \"^29.7.0\",\n \"kcd-scripts\": \"^13.0.0\",\n \"npm-run-all2\": \"^6.2.6\",\n \"react\": \"^19.0.0\",\n \"react-dom\": \"^19.0.0\",\n \"rimraf\": \"^3.0.2\",\n \"typescript\": \"^5.9.3\"\n },\n \"peerDependencies\": {\n \"@testing-library/dom\": \"^10.0.0\",\n \"@types/react\": \"^18.0.0 || ^19.0.0\",\n \"@types/react-dom\": \"^18.0.0 || ^19.0.0\",\n \"react\": \"^18.0.0 || ^19.0.0\",\n \"react-dom\": \"^18.0.0 || ^19.0.0\"\n },\n \"peerDependenciesMeta\": {\n \"@types/react\": {\n \"optional\": true\n },\n \"@types/react-dom\": {\n \"optional\": true\n }\n },\n \"eslintConfig\": {\n \"extends\": \"./node_modules/kcd-scripts/eslint.js\",\n \"parserOptions\": {\n \"ecmaVersion\": 2022\n },\n \"globals\": {\n \"globalThis\": \"readonly\"\n },\n \"rules\": {\n \"react/prop-types\": \"off\",\n \"react/no-adjacent-inline-elements\": \"off\",\n \"import/no-unassigned-import\": \"off\",\n \"import/named\": \"off\",\n \"testing-library/no-container\": \"off\",\n \"testing-library/no-debugging-utils\": \"off\",\n \"testing-library/no-dom-import\": \"off\",\n \"testing-library/no-unnecessary-act\": \"off\",\n \"testing-library/prefer-explicit-assert\": \"off\",\n \"testing-library/prefer-find-by\": \"off\",\n \"testing-library/prefer-user-event\": \"off\"\n }\n },\n \"eslintIgnore\": [\n \"node_modules\",\n \"coverage\",\n \"dist\",\n \"*.d.ts\"\n ],\n \"repository\": {\n \"type\": \"git\",\n \"url\": \"https://github.com/testing-library/react-testing-library\"\n },\n \"bugs\": {\n \"url\": \"https://github.com/testing-library/react-testing-library/issues\"\n },\n \"homepage\": \"https://github.com/testing-library/react-testing-library#readme\"\n}\n"
},
{
"path": "pure.d.ts",
"content": "export * from './types/pure'\n"
},
{
"path": "pure.js",
"content": "// makes it so people can import from '@testing-library/react/pure'\nmodule.exports = require('./dist/pure')\n"
},
{
"path": "src/__mocks__/axios.js",
"content": "module.exports = {\n get: jest.fn(() => Promise.resolve({data: {}})),\n}\n\n// Note:\n// For now we don't need any other method (POST/PUT/PATCH), what we have already works fine.\n// We will add more methods only if we need to.\n// For reference please read: https://github.com/testing-library/react-testing-library/issues/2\n"
},
{
"path": "src/__tests__/__snapshots__/render.js.snap",
"content": "// Jest Snapshot v1, https://goo.gl/fbAQLP\n\nexports[`render API supports fragments 1`] = `\n\n
\n \n DocumentFragment\n \n is pretty cool!\n
\n\n`;\n"
},
{
"path": "src/__tests__/act.js",
"content": "import * as React from 'react'\nimport {act, render, fireEvent, screen} from '../'\n\ntest('render calls useEffect immediately', () => {\n const effectCb = jest.fn()\n function MyUselessComponent() {\n React.useEffect(effectCb)\n return null\n }\n render()\n expect(effectCb).toHaveBeenCalledTimes(1)\n})\n\ntest('findByTestId returns the element', async () => {\n const ref = React.createRef()\n render()\n expect(await screen.findByTestId('foo')).toBe(ref.current)\n})\n\ntest('fireEvent triggers useEffect calls', () => {\n const effectCb = jest.fn()\n function Counter() {\n React.useEffect(effectCb)\n const [count, setCount] = React.useState(0)\n return \n }\n const {\n container: {firstChild: buttonNode},\n } = render()\n\n effectCb.mockClear()\n fireEvent.click(buttonNode)\n expect(buttonNode).toHaveTextContent('1')\n expect(effectCb).toHaveBeenCalledTimes(1)\n})\n\ntest('calls to hydrate will run useEffects', () => {\n const effectCb = jest.fn()\n function MyUselessComponent() {\n React.useEffect(effectCb)\n return null\n }\n render(, {hydrate: true})\n expect(effectCb).toHaveBeenCalledTimes(1)\n})\n\ntest('cleans up IS_REACT_ACT_ENVIRONMENT if its callback throws', () => {\n global.IS_REACT_ACT_ENVIRONMENT = false\n\n expect(() =>\n act(() => {\n throw new Error('threw')\n }),\n ).toThrow('threw')\n\n expect(global.IS_REACT_ACT_ENVIRONMENT).toEqual(false)\n})\n\ntest('cleans up IS_REACT_ACT_ENVIRONMENT if its async callback throws', async () => {\n global.IS_REACT_ACT_ENVIRONMENT = false\n\n await expect(() =>\n act(async () => {\n throw new Error('thenable threw')\n }),\n ).rejects.toThrow('thenable threw')\n\n expect(global.IS_REACT_ACT_ENVIRONMENT).toEqual(false)\n})\n"
},
{
"path": "src/__tests__/auto-cleanup-skip.js",
"content": "import * as React from 'react'\n\nlet render\nbeforeAll(() => {\n process.env.RTL_SKIP_AUTO_CLEANUP = 'true'\n const rtl = require('../')\n render = rtl.render\n})\n\n// This one verifies that if RTL_SKIP_AUTO_CLEANUP is set\n// then we DON'T auto-wire up the afterEach for folks\ntest('first', () => {\n render(
')\n})\n"
},
{
"path": "src/__tests__/auto-cleanup.js",
"content": "import * as React from 'react'\nimport {render} from '../'\n\n// This just verifies that by importing RTL in an\n// environment which supports afterEach (like jest)\n// we'll get automatic cleanup between tests.\ntest('first', () => {\n render(
hi
)\n})\n\ntest('second', () => {\n expect(document.body).toBeEmptyDOMElement()\n})\n"
},
{
"path": "src/__tests__/cleanup.js",
"content": "import * as React from 'react'\nimport {render, cleanup} from '../'\n\ntest('cleans up the document', () => {\n const spy = jest.fn()\n const divId = 'my-div'\n\n class Test extends React.Component {\n componentWillUnmount() {\n expect(document.getElementById(divId)).toBeInTheDocument()\n spy()\n }\n\n render() {\n return \n }\n }\n\n render()\n cleanup()\n expect(document.body).toBeEmptyDOMElement()\n expect(spy).toHaveBeenCalledTimes(1)\n})\n\ntest('cleanup does not error when an element is not a child', () => {\n render(, {container: document.createElement('div')})\n cleanup()\n})\n\ntest('cleanup runs effect cleanup functions', () => {\n const spy = jest.fn()\n\n const Test = () => {\n React.useEffect(() => spy)\n\n return null\n }\n\n render()\n cleanup()\n expect(spy).toHaveBeenCalledTimes(1)\n})\n\ndescribe('fake timers and missing act warnings', () => {\n beforeEach(() => {\n jest.resetAllMocks()\n jest.spyOn(console, 'error').mockImplementation(() => {\n // assert messages explicitly\n })\n jest.useFakeTimers()\n })\n\n afterEach(() => {\n jest.restoreAllMocks()\n jest.useRealTimers()\n })\n\n test('cleanup does not flush microtasks', () => {\n const microTaskSpy = jest.fn()\n function Test() {\n const counter = 1\n const [, setDeferredCounter] = React.useState(null)\n React.useEffect(() => {\n let cancelled = false\n Promise.resolve().then(() => {\n microTaskSpy()\n // eslint-disable-next-line jest/no-if, jest/no-conditional-in-test -- false positive\n if (!cancelled) {\n setDeferredCounter(counter)\n }\n })\n\n return () => {\n cancelled = true\n }\n }, [counter])\n\n return null\n }\n render()\n\n cleanup()\n\n expect(microTaskSpy).toHaveBeenCalledTimes(0)\n // console.error is mocked\n // eslint-disable-next-line no-console\n expect(console.error).toHaveBeenCalledTimes(0)\n })\n\n test('cleanup does not swallow missing act warnings', () => {\n const deferredStateUpdateSpy = jest.fn()\n function Test() {\n const counter = 1\n const [, setDeferredCounter] = React.useState(null)\n React.useEffect(() => {\n let cancelled = false\n setTimeout(() => {\n deferredStateUpdateSpy()\n // eslint-disable-next-line jest/no-conditional-in-test -- false-positive\n if (!cancelled) {\n setDeferredCounter(counter)\n }\n }, 0)\n\n return () => {\n cancelled = true\n }\n }, [counter])\n\n return null\n }\n render()\n\n jest.runAllTimers()\n cleanup()\n\n expect(deferredStateUpdateSpy).toHaveBeenCalledTimes(1)\n // console.error is mocked\n // eslint-disable-next-line no-console\n expect(console.error).toHaveBeenCalledTimes(1)\n // eslint-disable-next-line no-console\n expect(console.error.mock.calls[0][0]).toMatch(\n 'a test was not wrapped in act(...)',\n )\n })\n})\n"
},
{
"path": "src/__tests__/config.js",
"content": "import {configure, getConfig} from '../'\n\ndescribe('configuration API', () => {\n let originalConfig\n beforeEach(() => {\n // Grab the existing configuration so we can restore\n // it at the end of the test\n configure(existingConfig => {\n originalConfig = existingConfig\n // Don't change the existing config\n return {}\n })\n })\n\n afterEach(() => {\n configure(originalConfig)\n })\n\n describe('DTL options', () => {\n test('configure can set by a plain JS object', () => {\n const testIdAttribute = 'not-data-testid'\n configure({testIdAttribute})\n\n expect(getConfig().testIdAttribute).toBe(testIdAttribute)\n })\n\n test('configure can set by a function', () => {\n // setup base option\n const baseTestIdAttribute = 'data-testid'\n configure({testIdAttribute: baseTestIdAttribute})\n\n const modifiedPrefix = 'modified-'\n configure(existingConfig => ({\n testIdAttribute: `${modifiedPrefix}${existingConfig.testIdAttribute}`,\n }))\n\n expect(getConfig().testIdAttribute).toBe(\n `${modifiedPrefix}${baseTestIdAttribute}`,\n )\n })\n })\n\n describe('RTL options', () => {\n test('configure can set by a plain JS object', () => {\n configure({reactStrictMode: true})\n\n expect(getConfig().reactStrictMode).toBe(true)\n })\n\n test('configure can set by a function', () => {\n configure(existingConfig => ({\n reactStrictMode: !existingConfig.reactStrictMode,\n }))\n\n expect(getConfig().reactStrictMode).toBe(true)\n })\n })\n\n test('configure can set DTL and RTL options at once', () => {\n const testIdAttribute = 'not-data-testid'\n configure({testIdAttribute, reactStrictMode: true})\n\n expect(getConfig().testIdAttribute).toBe(testIdAttribute)\n expect(getConfig().reactStrictMode).toBe(true)\n })\n})\n"
},
{
"path": "src/__tests__/debug.js",
"content": "import * as React from 'react'\nimport {render, screen} from '../'\n\nbeforeEach(() => {\n jest.spyOn(console, 'log').mockImplementation(() => {})\n})\n\nafterEach(() => {\n console.log.mockRestore()\n})\n\ntest('debug pretty prints the container', () => {\n const HelloWorld = () =>
\n )\n }\n\n test('waitForElementToBeRemoved', async () => {\n render()\n const loading = () => screen.getByText('Loading..')\n await waitForElementToBeRemoved(loading)\n expect(screen.getByTestId('message')).toHaveTextContent(/Hello World/)\n })\n\n test('waitFor', async () => {\n render()\n await waitFor(() => {\n screen.getByText('Loading..')\n })\n await waitFor(() => {\n screen.getByText(/Loaded this message:/)\n })\n expect(screen.getByTestId('message')).toHaveTextContent(/Hello World/)\n })\n\n test('findBy', async () => {\n render()\n await expect(screen.findByTestId('message')).resolves.toHaveTextContent(\n /Hello World/,\n )\n })\n },\n)\n"
},
{
"path": "src/__tests__/error-handlers.js",
"content": "/* eslint-disable jest/no-if */\n/* eslint-disable jest/no-conditional-in-test */\n/* eslint-disable jest/no-conditional-expect */\nimport * as React from 'react'\nimport {render, renderHook} from '../'\n\nconst isReact19 = React.version.startsWith('19.')\n\nconst testGateReact19 = isReact19 ? test : test.skip\n\ntest('render errors', () => {\n function Thrower() {\n throw new Error('Boom!')\n }\n\n if (isReact19) {\n expect(() => {\n render()\n }).toThrow('Boom!')\n } else {\n expect(() => {\n expect(() => {\n render()\n }).toThrow('Boom!')\n }).toErrorDev([\n 'Error: Uncaught [Error: Boom!]',\n // React retries on error\n 'Error: Uncaught [Error: Boom!]',\n ])\n }\n})\n\ntest('onUncaughtError is not supported in render', () => {\n function Thrower() {\n throw new Error('Boom!')\n }\n const onUncaughtError = jest.fn(() => {})\n\n expect(() => {\n render(, {\n onUncaughtError(error, errorInfo) {\n console.log({error, errorInfo})\n },\n })\n }).toThrow(\n 'onUncaughtError is not supported. The `render` call will already throw on uncaught errors.',\n )\n\n expect(onUncaughtError).toHaveBeenCalledTimes(0)\n})\n\ntestGateReact19('onCaughtError is supported in render', () => {\n const thrownError = new Error('Boom!')\n const handleComponentDidCatch = jest.fn()\n const onCaughtError = jest.fn()\n class ErrorBoundary extends React.Component {\n state = {error: null}\n static getDerivedStateFromError(error) {\n return {error}\n }\n componentDidCatch(error, errorInfo) {\n handleComponentDidCatch(error, errorInfo)\n }\n render() {\n if (this.state.error) {\n return null\n }\n return this.props.children\n }\n }\n function Thrower() {\n throw thrownError\n }\n\n render(\n \n \n ,\n {\n onCaughtError,\n },\n )\n\n expect(onCaughtError).toHaveBeenCalledWith(thrownError, {\n componentStack: expect.any(String),\n errorBoundary: expect.any(Object),\n })\n})\n\ntest('onRecoverableError is supported in render', () => {\n const onRecoverableError = jest.fn()\n\n const container = document.createElement('div')\n container.innerHTML = '
server
'\n // We just hope we forwarded the callback correctly (which is guaranteed since we just pass it along)\n // Frankly, I'm too lazy to assert on React 18 hydration errors since they're a mess.\n // eslint-disable-next-line jest/no-conditional-in-test\n if (isReact19) {\n render(
,\n )\n const button = container.firstChild.firstChild\n\n fireEvent.focus(button)\n\n expect(handleBlur).toHaveBeenCalledTimes(0)\n expect(handleBubbledBlur).toHaveBeenCalledTimes(0)\n expect(handleFocus).toHaveBeenCalledTimes(1)\n expect(handleBubbledFocus).toHaveBeenCalledTimes(1)\n\n fireEvent.blur(button)\n\n expect(handleBlur).toHaveBeenCalledTimes(1)\n expect(handleBubbledBlur).toHaveBeenCalledTimes(1)\n expect(handleFocus).toHaveBeenCalledTimes(1)\n expect(handleBubbledFocus).toHaveBeenCalledTimes(1)\n})\n"
},
{
"path": "src/__tests__/multi-base.js",
"content": "import * as React from 'react'\nimport {render} from '../'\n\n// these are created once per test suite and reused for each case\nlet treeA, treeB\nbeforeAll(() => {\n treeA = document.createElement('div')\n treeB = document.createElement('div')\n document.body.appendChild(treeA)\n document.body.appendChild(treeB)\n})\n\nafterAll(() => {\n treeA.parentNode.removeChild(treeA)\n treeB.parentNode.removeChild(treeB)\n})\n\ntest('baseElement isolates trees from one another', () => {\n const {getByText: getByTextInA} = render(
\n )\n }\n}\n\nconst sleep = t => new Promise(resolve => setTimeout(resolve, t))\n\ntest('unmounts a component', async () => {\n const {unmount, container} = render()\n fireEvent.click(screen.getByText('Start'))\n unmount()\n // hey there reader! You don't need to have an assertion like this one\n // this is just me making sure that the unmount function works.\n // You don't need to do this in your apps. Just rely on the fact that this works.\n expect(container).toBeEmptyDOMElement()\n // just wait to see if the interval is cleared or not\n // if it's not, then we'll call setState on an unmounted component\n // and get an error.\n await sleep(5)\n})\n"
},
{
"path": "src/act-compat.js",
"content": "import * as React from 'react'\nimport * as DeprecatedReactTestUtils from 'react-dom/test-utils'\n\nconst reactAct =\n typeof React.act === 'function' ? React.act : DeprecatedReactTestUtils.act\n\nfunction getGlobalThis() {\n /* istanbul ignore else */\n if (typeof globalThis !== 'undefined') {\n return globalThis\n }\n /* istanbul ignore next */\n if (typeof self !== 'undefined') {\n return self\n }\n /* istanbul ignore next */\n if (typeof window !== 'undefined') {\n return window\n }\n /* istanbul ignore next */\n if (typeof global !== 'undefined') {\n return global\n }\n /* istanbul ignore next */\n throw new Error('unable to locate global object')\n}\n\nfunction setIsReactActEnvironment(isReactActEnvironment) {\n getGlobalThis().IS_REACT_ACT_ENVIRONMENT = isReactActEnvironment\n}\n\nfunction getIsReactActEnvironment() {\n return getGlobalThis().IS_REACT_ACT_ENVIRONMENT\n}\n\nfunction withGlobalActEnvironment(actImplementation) {\n return callback => {\n const previousActEnvironment = getIsReactActEnvironment()\n setIsReactActEnvironment(true)\n try {\n // The return value of `act` is always a thenable.\n let callbackNeedsToBeAwaited = false\n const actResult = actImplementation(() => {\n const result = callback()\n if (\n result !== null &&\n typeof result === 'object' &&\n typeof result.then === 'function'\n ) {\n callbackNeedsToBeAwaited = true\n }\n return result\n })\n if (callbackNeedsToBeAwaited) {\n const thenable = actResult\n return {\n then: (resolve, reject) => {\n thenable.then(\n returnValue => {\n setIsReactActEnvironment(previousActEnvironment)\n resolve(returnValue)\n },\n error => {\n setIsReactActEnvironment(previousActEnvironment)\n reject(error)\n },\n )\n },\n }\n } else {\n setIsReactActEnvironment(previousActEnvironment)\n return actResult\n }\n } catch (error) {\n // Can't be a `finally {}` block since we don't know if we have to immediately restore IS_REACT_ACT_ENVIRONMENT\n // or if we have to await the callback first.\n setIsReactActEnvironment(previousActEnvironment)\n throw error\n }\n }\n}\n\nconst act = withGlobalActEnvironment(reactAct)\n\nexport default act\nexport {\n setIsReactActEnvironment as setReactActEnvironment,\n getIsReactActEnvironment,\n}\n\n/* eslint no-console:0 */\n"
},
{
"path": "src/config.js",
"content": "import {\n getConfig as getConfigDTL,\n configure as configureDTL,\n} from '@testing-library/dom'\n\nlet configForRTL = {\n reactStrictMode: false,\n}\n\nfunction getConfig() {\n return {\n ...getConfigDTL(),\n ...configForRTL,\n }\n}\n\nfunction configure(newConfig) {\n if (typeof newConfig === 'function') {\n // Pass the existing config out to the provided function\n // and accept a delta in return\n newConfig = newConfig(getConfig())\n }\n\n const {reactStrictMode, ...configForDTL} = newConfig\n\n configureDTL(configForDTL)\n\n configForRTL = {\n ...configForRTL,\n reactStrictMode,\n }\n}\n\nexport {getConfig, configure}\n"
},
{
"path": "src/fire-event.js",
"content": "import {fireEvent as dtlFireEvent} from '@testing-library/dom'\n\n// react-testing-library's version of fireEvent will call\n// dom-testing-library's version of fireEvent. The reason\n// we make this distinction however is because we have\n// a few extra events that work a bit differently\nconst fireEvent = (...args) => dtlFireEvent(...args)\n\nObject.keys(dtlFireEvent).forEach(key => {\n fireEvent[key] = (...args) => dtlFireEvent[key](...args)\n})\n\n// React event system tracks native mouseOver/mouseOut events for\n// running onMouseEnter/onMouseLeave handlers\n// @link https://github.com/facebook/react/blob/b87aabdfe1b7461e7331abb3601d9e6bb27544bc/packages/react-dom/src/events/EnterLeaveEventPlugin.js#L24-L31\nconst mouseEnter = fireEvent.mouseEnter\nconst mouseLeave = fireEvent.mouseLeave\nfireEvent.mouseEnter = (...args) => {\n mouseEnter(...args)\n return fireEvent.mouseOver(...args)\n}\nfireEvent.mouseLeave = (...args) => {\n mouseLeave(...args)\n return fireEvent.mouseOut(...args)\n}\n\nconst pointerEnter = fireEvent.pointerEnter\nconst pointerLeave = fireEvent.pointerLeave\nfireEvent.pointerEnter = (...args) => {\n pointerEnter(...args)\n return fireEvent.pointerOver(...args)\n}\nfireEvent.pointerLeave = (...args) => {\n pointerLeave(...args)\n return fireEvent.pointerOut(...args)\n}\n\nconst select = fireEvent.select\nfireEvent.select = (node, init) => {\n select(node, init)\n // React tracks this event only on focused inputs\n node.focus()\n\n // React creates this event when one of the following native events happens\n // - contextMenu\n // - mouseUp\n // - dragEnd\n // - keyUp\n // - keyDown\n // so we can use any here\n // @link https://github.com/facebook/react/blob/b87aabdfe1b7461e7331abb3601d9e6bb27544bc/packages/react-dom/src/events/SelectEventPlugin.js#L203-L224\n fireEvent.keyUp(node, init)\n}\n\n// React event system tracks native focusout/focusin events for\n// running blur/focus handlers\n// @link https://github.com/facebook/react/pull/19186\nconst blur = fireEvent.blur\nconst focus = fireEvent.focus\nfireEvent.blur = (...args) => {\n fireEvent.focusOut(...args)\n return blur(...args)\n}\nfireEvent.focus = (...args) => {\n fireEvent.focusIn(...args)\n return focus(...args)\n}\n\nexport {fireEvent}\n"
},
{
"path": "src/index.js",
"content": "import {getIsReactActEnvironment, setReactActEnvironment} from './act-compat'\nimport {cleanup} from './pure'\n\n// if we're running in a test runner that supports afterEach\n// or teardown then we'll automatically run cleanup afterEach test\n// this ensures that tests run in isolation from each other\n// if you don't like this then either import the `pure` module\n// or set the RTL_SKIP_AUTO_CLEANUP env variable to 'true'.\nif (typeof process === 'undefined' || !process.env?.RTL_SKIP_AUTO_CLEANUP) {\n // ignore teardown() in code coverage because Jest does not support it\n /* istanbul ignore else */\n if (typeof afterEach === 'function') {\n afterEach(() => {\n cleanup()\n })\n } else if (typeof teardown === 'function') {\n // Block is guarded by `typeof` check.\n // eslint does not support `typeof` guards.\n // eslint-disable-next-line no-undef\n teardown(() => {\n cleanup()\n })\n }\n\n // No test setup with other test runners available\n /* istanbul ignore else */\n if (typeof beforeAll === 'function' && typeof afterAll === 'function') {\n // This matches the behavior of React < 18.\n let previousIsReactActEnvironment = getIsReactActEnvironment()\n beforeAll(() => {\n previousIsReactActEnvironment = getIsReactActEnvironment()\n setReactActEnvironment(true)\n })\n\n afterAll(() => {\n setReactActEnvironment(previousIsReactActEnvironment)\n })\n }\n}\n\nexport * from './pure'\n"
},
{
"path": "src/pure.js",
"content": "import * as React from 'react'\nimport ReactDOM from 'react-dom'\nimport * as ReactDOMClient from 'react-dom/client'\nimport {\n getQueriesForElement,\n prettyDOM,\n configure as configureDTL,\n} from '@testing-library/dom'\nimport act, {\n getIsReactActEnvironment,\n setReactActEnvironment,\n} from './act-compat'\nimport {fireEvent} from './fire-event'\nimport {getConfig, configure} from './config'\n\nfunction jestFakeTimersAreEnabled() {\n /* istanbul ignore else */\n if (typeof jest !== 'undefined' && jest !== null) {\n return (\n // legacy timers\n setTimeout._isMockFunction === true || // modern timers\n // eslint-disable-next-line prefer-object-has-own -- No Object.hasOwn in all target environments we support.\n Object.prototype.hasOwnProperty.call(setTimeout, 'clock')\n )\n } // istanbul ignore next\n\n return false\n}\n\nconfigureDTL({\n unstable_advanceTimersWrapper: cb => {\n return act(cb)\n },\n // We just want to run `waitFor` without IS_REACT_ACT_ENVIRONMENT\n // But that's not necessarily how `asyncWrapper` is used since it's a public method.\n // Let's just hope nobody else is using it.\n asyncWrapper: async cb => {\n const previousActEnvironment = getIsReactActEnvironment()\n setReactActEnvironment(false)\n try {\n const result = await cb()\n // Drain microtask queue.\n // Otherwise we'll restore the previous act() environment, before we resolve the `waitFor` call.\n // The caller would have no chance to wrap the in-flight Promises in `act()`\n await new Promise(resolve => {\n setTimeout(() => {\n resolve()\n }, 0)\n\n if (jestFakeTimersAreEnabled()) {\n jest.advanceTimersByTime(0)\n }\n })\n\n return result\n } finally {\n setReactActEnvironment(previousActEnvironment)\n }\n },\n eventWrapper: cb => {\n let result\n act(() => {\n result = cb()\n })\n return result\n },\n})\n\n// Ideally we'd just use a WeakMap where containers are keys and roots are values.\n// We use two variables so that we can bail out in constant time when we render with a new container (most common use case)\n/**\n * @type {Set}\n */\nconst mountedContainers = new Set()\n/**\n * @type Array<{container: import('react-dom').Container, root: ReturnType}>\n */\nconst mountedRootEntries = []\n\nfunction strictModeIfNeeded(innerElement, reactStrictMode) {\n return reactStrictMode ?? getConfig().reactStrictMode\n ? React.createElement(React.StrictMode, null, innerElement)\n : innerElement\n}\n\nfunction wrapUiIfNeeded(innerElement, wrapperComponent) {\n return wrapperComponent\n ? React.createElement(wrapperComponent, null, innerElement)\n : innerElement\n}\n\nfunction createConcurrentRoot(\n container,\n {\n hydrate,\n onCaughtError,\n onRecoverableError,\n ui,\n wrapper: WrapperComponent,\n reactStrictMode,\n },\n) {\n let root\n if (hydrate) {\n act(() => {\n root = ReactDOMClient.hydrateRoot(\n container,\n strictModeIfNeeded(\n wrapUiIfNeeded(ui, WrapperComponent),\n reactStrictMode,\n ),\n {onCaughtError, onRecoverableError},\n )\n })\n } else {\n root = ReactDOMClient.createRoot(container, {\n onCaughtError,\n onRecoverableError,\n })\n }\n\n return {\n hydrate() {\n /* istanbul ignore if */\n if (!hydrate) {\n throw new Error(\n 'Attempted to hydrate a non-hydrateable root. This is a bug in `@testing-library/react`.',\n )\n }\n // Nothing to do since hydration happens when creating the root object.\n },\n render(element) {\n root.render(element)\n },\n unmount() {\n root.unmount()\n },\n }\n}\n\nfunction createLegacyRoot(container) {\n return {\n hydrate(element) {\n ReactDOM.hydrate(element, container)\n },\n render(element) {\n ReactDOM.render(element, container)\n },\n unmount() {\n ReactDOM.unmountComponentAtNode(container)\n },\n }\n}\n\nfunction renderRoot(\n ui,\n {\n baseElement,\n container,\n hydrate,\n queries,\n root,\n wrapper: WrapperComponent,\n reactStrictMode,\n },\n) {\n act(() => {\n if (hydrate) {\n root.hydrate(\n strictModeIfNeeded(\n wrapUiIfNeeded(ui, WrapperComponent),\n reactStrictMode,\n ),\n container,\n )\n } else {\n root.render(\n strictModeIfNeeded(\n wrapUiIfNeeded(ui, WrapperComponent),\n reactStrictMode,\n ),\n container,\n )\n }\n })\n\n return {\n container,\n baseElement,\n debug: (el = baseElement, maxLength, options) =>\n Array.isArray(el)\n ? // eslint-disable-next-line no-console\n el.forEach(e => console.log(prettyDOM(e, maxLength, options)))\n : // eslint-disable-next-line no-console,\n console.log(prettyDOM(el, maxLength, options)),\n unmount: () => {\n act(() => {\n root.unmount()\n })\n },\n rerender: rerenderUi => {\n renderRoot(rerenderUi, {\n container,\n baseElement,\n root,\n wrapper: WrapperComponent,\n reactStrictMode,\n })\n // Intentionally do not return anything to avoid unnecessarily complicating the API.\n // folks can use all the same utilities we return in the first place that are bound to the container\n },\n asFragment: () => {\n /* istanbul ignore else (old jsdom limitation) */\n if (typeof document.createRange === 'function') {\n return document\n .createRange()\n .createContextualFragment(container.innerHTML)\n } else {\n const template = document.createElement('template')\n template.innerHTML = container.innerHTML\n return template.content\n }\n },\n ...getQueriesForElement(baseElement, queries),\n }\n}\n\nfunction render(\n ui,\n {\n container,\n baseElement = container,\n legacyRoot = false,\n onCaughtError,\n onUncaughtError,\n onRecoverableError,\n queries,\n hydrate = false,\n wrapper,\n reactStrictMode,\n } = {},\n) {\n if (onUncaughtError !== undefined) {\n throw new Error(\n 'onUncaughtError is not supported. The `render` call will already throw on uncaught errors.',\n )\n }\n if (legacyRoot && typeof ReactDOM.render !== 'function') {\n const error = new Error(\n '`legacyRoot: true` is not supported in this version of React. ' +\n 'If your app runs React 19 or later, you should remove this flag. ' +\n 'If your app runs React 18 or earlier, visit https://react.dev/blog/2022/03/08/react-18-upgrade-guide for upgrade instructions.',\n )\n Error.captureStackTrace(error, render)\n throw error\n }\n\n if (!baseElement) {\n // default to document.body instead of documentElement to avoid output of potentially-large\n // head elements (such as JSS style blocks) in debug output\n baseElement = document.body\n }\n if (!container) {\n container = baseElement.appendChild(document.createElement('div'))\n }\n\n let root\n // eslint-disable-next-line no-negated-condition -- we want to map the evolution of this over time. The root is created first. Only later is it re-used so we don't want to read the case that happens later first.\n if (!mountedContainers.has(container)) {\n const createRootImpl = legacyRoot ? createLegacyRoot : createConcurrentRoot\n root = createRootImpl(container, {\n hydrate,\n onCaughtError,\n onRecoverableError,\n ui,\n wrapper,\n reactStrictMode,\n })\n\n mountedRootEntries.push({container, root})\n // we'll add it to the mounted containers regardless of whether it's actually\n // added to document.body so the cleanup method works regardless of whether\n // they're passing us a custom container or not.\n mountedContainers.add(container)\n } else {\n mountedRootEntries.forEach(rootEntry => {\n // Else is unreachable since `mountedContainers` has the `container`.\n // Only reachable if one would accidentally add the container to `mountedContainers` but not the root to `mountedRootEntries`\n /* istanbul ignore else */\n if (rootEntry.container === container) {\n root = rootEntry.root\n }\n })\n }\n\n return renderRoot(ui, {\n container,\n baseElement,\n queries,\n hydrate,\n wrapper,\n root,\n reactStrictMode,\n })\n}\n\nfunction cleanup() {\n mountedRootEntries.forEach(({root, container}) => {\n act(() => {\n root.unmount()\n })\n if (container.parentNode === document.body) {\n document.body.removeChild(container)\n }\n })\n mountedRootEntries.length = 0\n mountedContainers.clear()\n}\n\nfunction renderHook(renderCallback, options = {}) {\n const {initialProps, ...renderOptions} = options\n\n if (renderOptions.legacyRoot && typeof ReactDOM.render !== 'function') {\n const error = new Error(\n '`legacyRoot: true` is not supported in this version of React. ' +\n 'If your app runs React 19 or later, you should remove this flag. ' +\n 'If your app runs React 18 or earlier, visit https://react.dev/blog/2022/03/08/react-18-upgrade-guide for upgrade instructions.',\n )\n Error.captureStackTrace(error, renderHook)\n throw error\n }\n\n const result = React.createRef()\n\n function TestComponent({renderCallbackProps}) {\n const pendingResult = renderCallback(renderCallbackProps)\n\n React.useEffect(() => {\n result.current = pendingResult\n })\n\n return null\n }\n\n const {rerender: baseRerender, unmount} = render(\n ,\n renderOptions,\n )\n\n function rerender(rerenderCallbackProps) {\n return baseRerender(\n ,\n )\n }\n\n return {result, rerender, unmount}\n}\n\n// just re-export everything from dom-testing-library\nexport * from '@testing-library/dom'\nexport {render, renderHook, cleanup, act, fireEvent, getConfig, configure}\n\n/* eslint func-name-matching:0 */\n"
},
{
"path": "tests/failOnUnexpectedConsoleCalls.js",
"content": "// Fork of https://github.com/facebook/react/blob/513417d6951fa3ff5729302b7990b84604b11afa/scripts/jest/setupTests.js#L71-L161\n/**\nMIT License\n\nCopyright (c) Facebook, Inc. and its affiliates.\n\nPermission is hereby granted, free of charge, to any person obtaining a copy\nof this software and associated documentation files (the \"Software\"), to deal\nin the Software without restriction, including without limitation the rights\nto use, copy, modify, merge, publish, distribute, sublicense, and/or sell\ncopies of the Software, and to permit persons to whom the Software is\nfurnished to do so, subject to the following conditions:\n\nThe above copyright notice and this permission notice shall be included in all\ncopies or substantial portions of the Software.\n\nTHE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\nIMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\nFITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\nAUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\nLIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\nOUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE\nSOFTWARE.\n */\n/* eslint-disable prefer-template */\n/* eslint-disable func-names */\nconst util = require('util')\nconst chalk = require('chalk')\nconst shouldIgnoreConsoleError = require('./shouldIgnoreConsoleError')\n\nconst patchConsoleMethod = (methodName, unexpectedConsoleCallStacks) => {\n const newMethod = function (format, ...args) {\n // Ignore uncaught errors reported by jsdom\n // and React addendums because they're too noisy.\n if (methodName === 'error' && shouldIgnoreConsoleError(format, args)) {\n return\n }\n\n // Capture the call stack now so we can warn about it later.\n // The call stack has helpful information for the test author.\n // Don't throw yet though b'c it might be accidentally caught and suppressed.\n const stack = new Error().stack\n unexpectedConsoleCallStacks.push([\n stack.substr(stack.indexOf('\\n') + 1),\n util.format(format, ...args),\n ])\n }\n\n console[methodName] = newMethod\n\n return newMethod\n}\n\nconst isSpy = spy =>\n (spy.calls && typeof spy.calls.count === 'function') ||\n spy._isMockFunction === true\n\nconst flushUnexpectedConsoleCalls = (\n mockMethod,\n methodName,\n expectedMatcher,\n unexpectedConsoleCallStacks,\n) => {\n if (console[methodName] !== mockMethod && !isSpy(console[methodName])) {\n throw new Error(\n `Test did not tear down console.${methodName} mock properly.`,\n )\n }\n if (unexpectedConsoleCallStacks.length > 0) {\n const messages = unexpectedConsoleCallStacks.map(\n ([stack, message]) =>\n `${chalk.red(message)}\\n` +\n `${stack\n .split('\\n')\n .map(line => chalk.gray(line))\n .join('\\n')}`,\n )\n\n const message =\n `Expected test not to call ${chalk.bold(\n `console.${methodName}()`,\n )}.\\n\\n` +\n 'If the warning is expected, test for it explicitly by:\\n' +\n `1. Using the ${chalk.bold('.' + expectedMatcher + '()')} ` +\n `matcher, or...\\n` +\n `2. Mock it out using ${chalk.bold(\n 'spyOnDev',\n )}(console, '${methodName}') or ${chalk.bold(\n 'spyOnProd',\n )}(console, '${methodName}'), and test that the warning occurs.`\n\n throw new Error(`${message}\\n\\n${messages.join('\\n\\n')}`)\n }\n}\n\nconst unexpectedErrorCallStacks = []\nconst unexpectedWarnCallStacks = []\n\nconst errorMethod = patchConsoleMethod('error', unexpectedErrorCallStacks)\nconst warnMethod = patchConsoleMethod('warn', unexpectedWarnCallStacks)\n\nconst flushAllUnexpectedConsoleCalls = () => {\n flushUnexpectedConsoleCalls(\n errorMethod,\n 'error',\n 'toErrorDev',\n unexpectedErrorCallStacks,\n )\n flushUnexpectedConsoleCalls(\n warnMethod,\n 'warn',\n 'toWarnDev',\n unexpectedWarnCallStacks,\n )\n unexpectedErrorCallStacks.length = 0\n unexpectedWarnCallStacks.length = 0\n}\n\nconst resetAllUnexpectedConsoleCalls = () => {\n unexpectedErrorCallStacks.length = 0\n unexpectedWarnCallStacks.length = 0\n}\n\nexpect.extend({\n ...require('./toWarnDev'),\n})\n\nbeforeEach(resetAllUnexpectedConsoleCalls)\nafterEach(flushAllUnexpectedConsoleCalls)\n"
},
{
"path": "tests/setup-env.js",
"content": "import '@testing-library/jest-dom/extend-expect'\nimport './failOnUnexpectedConsoleCalls'\nimport {TextEncoder} from 'util'\nimport {MessageChannel} from 'worker_threads'\n\nglobal.TextEncoder = TextEncoder\n// TODO: Revisit once https://github.com/jsdom/jsdom/issues/2448 is resolved\n// This isn't perfect but good enough.\nglobal.MessageChannel = MessageChannel\n"
},
{
"path": "tests/shouldIgnoreConsoleError.js",
"content": "// Fork of https://github.com/facebook/react/blob/513417d6951fa3ff5729302b7990b84604b11afa/scripts/jest/shouldIgnoreConsoleError.js\n/**\nMIT License\n\nCopyright (c) Facebook, Inc. and its affiliates.\n\nPermission is hereby granted, free of charge, to any person obtaining a copy\nof this software and associated documentation files (the \"Software\"), to deal\nin the Software without restriction, including without limitation the rights\nto use, copy, modify, merge, publish, distribute, sublicense, and/or sell\ncopies of the Software, and to permit persons to whom the Software is\nfurnished to do so, subject to the following conditions:\n\nThe above copyright notice and this permission notice shall be included in all\ncopies or substantial portions of the Software.\n\nTHE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\nIMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\nFITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\nAUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\nLIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\nOUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE\nSOFTWARE.\n */\n\nmodule.exports = function shouldIgnoreConsoleError(format) {\n if (process.env.NODE_ENV !== 'production') {\n if (typeof format === 'string') {\n if (format.indexOf('Error: Uncaught [') === 0) {\n // This looks like an uncaught error from invokeGuardedCallback() wrapper\n // in development that is reported by jsdom. Ignore because it's noisy.\n return true\n }\n if (format.indexOf('The above error occurred') === 0) {\n // This looks like an error addendum from ReactFiberErrorLogger.\n // Ignore it too.\n return true\n }\n if (\n format.startsWith(\n 'Warning: `ReactDOMTestUtils.act` is deprecated in favor of `React.act`.',\n )\n ) {\n // This is a React bug in 18.3.0.\n // Versions with `ReactDOMTestUtils.ac` being deprecated, should have `React.act`\n return true\n }\n }\n }\n // Looks legit\n return false\n}\n"
},
{
"path": "tests/toWarnDev.js",
"content": "// Fork of https://github.com/facebook/react/blob/513417d6951fa3ff5729302b7990b84604b11afa/scripts/jest/matchers/toWarnDev.js\n/**\nMIT License\n\nCopyright (c) Facebook, Inc. and its affiliates.\n\nPermission is hereby granted, free of charge, to any person obtaining a copy\nof this software and associated documentation files (the \"Software\"), to deal\nin the Software without restriction, including without limitation the rights\nto use, copy, modify, merge, publish, distribute, sublicense, and/or sell\ncopies of the Software, and to permit persons to whom the Software is\nfurnished to do so, subject to the following conditions:\n\nThe above copyright notice and this permission notice shall be included in all\ncopies or substantial portions of the Software.\n\nTHE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\nIMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\nFITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\nAUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\nLIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\nOUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE\nSOFTWARE.\n */\n/* eslint-disable no-unsafe-finally */\n/* eslint-disable no-negated-condition */\n/* eslint-disable no-invalid-this */\n/* eslint-disable prefer-template */\n/* eslint-disable func-names */\n/* eslint-disable complexity */\nconst util = require('util')\nconst jestDiff = require('jest-diff').diff\nconst shouldIgnoreConsoleError = require('./shouldIgnoreConsoleError')\n\nfunction normalizeCodeLocInfo(str) {\n if (typeof str !== 'string') {\n return str\n }\n // This special case exists only for the special source location in\n // ReactElementValidator. That will go away if we remove source locations.\n str = str.replace(/Check your code at .+?:\\d+/g, 'Check your code at **')\n // V8 format:\n // at Component (/path/filename.js:123:45)\n // React format:\n // in Component (at filename.js:123)\n // eslint-disable-next-line prefer-arrow-callback\n return str.replace(/\\n +(?:at|in) ([\\S]+)[^\\n]*/g, function (m, name) {\n return '\\n in ' + name + ' (at **)'\n })\n}\n\nconst createMatcherFor = (consoleMethod, matcherName) =>\n function matcher(callback, expectedMessages, options = {}) {\n if (process.env.NODE_ENV !== 'production') {\n // Warn about incorrect usage of matcher.\n if (typeof expectedMessages === 'string') {\n expectedMessages = [expectedMessages]\n } else if (!Array.isArray(expectedMessages)) {\n throw Error(\n `${matcherName}() requires a parameter of type string or an array of strings ` +\n `but was given ${typeof expectedMessages}.`,\n )\n }\n if (\n options != null &&\n (typeof options !== 'object' || Array.isArray(options))\n ) {\n throw new Error(\n `${matcherName}() second argument, when present, should be an object. ` +\n 'Did you forget to wrap the messages into an array?',\n )\n }\n if (arguments.length > 3) {\n // `matcher` comes from Jest, so it's more than 2 in practice\n throw new Error(\n `${matcherName}() received more than two arguments. ` +\n 'Did you forget to wrap the messages into an array?',\n )\n }\n\n const withoutStack = options.withoutStack\n const logAllErrors = options.logAllErrors\n const warningsWithoutComponentStack = []\n const warningsWithComponentStack = []\n const unexpectedWarnings = []\n\n let lastWarningWithMismatchingFormat = null\n let lastWarningWithExtraComponentStack = null\n\n // Catch errors thrown by the callback,\n // But only rethrow them if all test expectations have been satisfied.\n // Otherwise an Error in the callback can mask a failed expectation,\n // and result in a test that passes when it shouldn't.\n let caughtError\n\n const isLikelyAComponentStack = message =>\n typeof message === 'string' &&\n (message.includes('\\n in ') || message.includes('\\n at '))\n\n const consoleSpy = (format, ...args) => {\n // Ignore uncaught errors reported by jsdom\n // and React addendums because they're too noisy.\n if (\n !logAllErrors &&\n consoleMethod === 'error' &&\n shouldIgnoreConsoleError(format, args)\n ) {\n return\n }\n\n const message = util.format(format, ...args)\n const normalizedMessage = normalizeCodeLocInfo(message)\n\n // Remember if the number of %s interpolations\n // doesn't match the number of arguments.\n // We'll fail the test if it happens.\n let argIndex = 0\n String(format).replace(/%s/g, () => argIndex++)\n if (argIndex !== args.length) {\n lastWarningWithMismatchingFormat = {\n format,\n args,\n expectedArgCount: argIndex,\n }\n }\n\n // Protect against accidentally passing a component stack\n // to warning() which already injects the component stack.\n if (\n args.length >= 2 &&\n isLikelyAComponentStack(args[args.length - 1]) &&\n isLikelyAComponentStack(args[args.length - 2])\n ) {\n lastWarningWithExtraComponentStack = {\n format,\n }\n }\n\n for (let index = 0; index < expectedMessages.length; index++) {\n const expectedMessage = expectedMessages[index]\n if (\n normalizedMessage === expectedMessage ||\n normalizedMessage.includes(expectedMessage)\n ) {\n if (isLikelyAComponentStack(normalizedMessage)) {\n warningsWithComponentStack.push(normalizedMessage)\n } else {\n warningsWithoutComponentStack.push(normalizedMessage)\n }\n expectedMessages.splice(index, 1)\n return\n }\n }\n\n let errorMessage\n if (expectedMessages.length === 0) {\n errorMessage =\n 'Unexpected warning recorded: ' +\n this.utils.printReceived(normalizedMessage)\n } else if (expectedMessages.length === 1) {\n errorMessage =\n 'Unexpected warning recorded: ' +\n jestDiff(expectedMessages[0], normalizedMessage)\n } else {\n errorMessage =\n 'Unexpected warning recorded: ' +\n jestDiff(expectedMessages, [normalizedMessage])\n }\n\n // Record the call stack for unexpected warnings.\n // We don't throw an Error here though,\n // Because it might be suppressed by ReactFiberScheduler.\n unexpectedWarnings.push(new Error(errorMessage))\n }\n\n // TODO Decide whether we need to support nested toWarn* expectations.\n // If we don't need it, add a check here to see if this is already our spy,\n // And throw an error.\n const originalMethod = console[consoleMethod]\n\n // Avoid using Jest's built-in spy since it can't be removed.\n console[consoleMethod] = consoleSpy\n\n try {\n callback()\n } catch (error) {\n caughtError = error\n } finally {\n // Restore the unspied method so that unexpected errors fail tests.\n console[consoleMethod] = originalMethod\n\n // Any unexpected Errors thrown by the callback should fail the test.\n // This should take precedence since unexpected errors could block warnings.\n if (caughtError) {\n throw caughtError\n }\n\n // Any unexpected warnings should be treated as a failure.\n if (unexpectedWarnings.length > 0) {\n return {\n message: () => unexpectedWarnings[0].stack,\n pass: false,\n }\n }\n\n // Any remaining messages indicate a failed expectations.\n if (expectedMessages.length > 0) {\n return {\n message: () =>\n `Expected warning was not recorded:\\n ${this.utils.printReceived(\n expectedMessages[0],\n )}`,\n pass: false,\n }\n }\n\n if (typeof withoutStack === 'number') {\n // We're expecting a particular number of warnings without stacks.\n if (withoutStack !== warningsWithoutComponentStack.length) {\n return {\n message: () =>\n `Expected ${withoutStack} warnings without a component stack but received ${warningsWithoutComponentStack.length}:\\n` +\n warningsWithoutComponentStack.map(warning =>\n this.utils.printReceived(warning),\n ),\n pass: false,\n }\n }\n } else if (withoutStack === true) {\n // We're expecting that all warnings won't have the stack.\n // If some warnings have it, it's an error.\n if (warningsWithComponentStack.length > 0) {\n return {\n message: () =>\n `Received warning unexpectedly includes a component stack:\\n ${this.utils.printReceived(\n warningsWithComponentStack[0],\n )}\\nIf this warning intentionally includes the component stack, remove ` +\n `{withoutStack: true} from the ${matcherName}() call. If you have a mix of ` +\n `warnings with and without stack in one ${matcherName}() call, pass ` +\n `{withoutStack: N} where N is the number of warnings without stacks.`,\n pass: false,\n }\n }\n } else if (withoutStack === false || withoutStack === undefined) {\n // We're expecting that all warnings *do* have the stack (default).\n // If some warnings don't have it, it's an error.\n if (warningsWithoutComponentStack.length > 0) {\n return {\n message: () =>\n `Received warning unexpectedly does not include a component stack:\\n ${this.utils.printReceived(\n warningsWithoutComponentStack[0],\n )}\\nIf this warning intentionally omits the component stack, add ` +\n `{withoutStack: true} to the ${matcherName} call.`,\n pass: false,\n }\n }\n } else {\n throw Error(\n `The second argument for ${matcherName}(), when specified, must be an object. It may have a ` +\n `property called \"withoutStack\" whose value may be undefined, boolean, or a number. ` +\n `Instead received ${typeof withoutStack}.`,\n )\n }\n\n if (lastWarningWithMismatchingFormat !== null) {\n return {\n message: () =>\n `Received ${\n lastWarningWithMismatchingFormat.args.length\n } arguments for a message with ${\n lastWarningWithMismatchingFormat.expectedArgCount\n } placeholders:\\n ${this.utils.printReceived(\n lastWarningWithMismatchingFormat.format,\n )}`,\n pass: false,\n }\n }\n\n if (lastWarningWithExtraComponentStack !== null) {\n return {\n message: () =>\n `Received more than one component stack for a warning:\\n ${this.utils.printReceived(\n lastWarningWithExtraComponentStack.format,\n )}\\nDid you accidentally pass a stack to warning() as the last argument? ` +\n `Don't forget warning() already injects the component stack automatically.`,\n pass: false,\n }\n }\n\n return {pass: true}\n }\n } else {\n // Any uncaught errors or warnings should fail tests in production mode.\n callback()\n\n return {pass: true}\n }\n }\n\nmodule.exports = {\n toWarnDev: createMatcherFor('warn', 'toWarnDev'),\n toErrorDev: createMatcherFor('error', 'toErrorDev'),\n}\n"
},
{
"path": "tsconfig.json",
"content": "{\n // Visit https://aka.ms/tsconfig to read more about this file\n \"compilerOptions\": {\n // File Layout\n // \"rootDir\": \"./src\",\n // \"outDir\": \"./dist\",\n\n // Environment Settings\n // See also https://aka.ms/tsconfig/module\n \"module\": \"nodenext\",\n \"target\": \"esnext\",\n // For nodejs:\n \"lib\": [\"esnext\", \"DOM\"],\n \"types\": [\"node\"],\n\n // Other Outputs\n \"sourceMap\": true,\n \"declaration\": true,\n \"declarationMap\": true,\n\n // Stricter Typechecking Options\n \"noUncheckedIndexedAccess\": true,\n \"exactOptionalPropertyTypes\": true,\n\n // Style Options\n // \"noImplicitReturns\": true,\n // \"noImplicitOverride\": true,\n // \"noUnusedLocals\": true,\n // \"noUnusedParameters\": true,\n // \"noFallthroughCasesInSwitch\": true,\n // \"noPropertyAccessFromIndexSignature\": true,\n\n \"strict\": true,\n \"jsx\": \"react-jsx\",\n \"verbatimModuleSyntax\": false,\n \"isolatedModules\": true,\n \"noUncheckedSideEffectImports\": true,\n \"moduleDetection\": \"force\",\n \"skipLibCheck\": false,\n\n \"noEmit\": true\n },\n \"include\": [\"types\"]\n}\n"
},
{
"path": "types/index.d.ts",
"content": "// TypeScript Version: 3.8\nimport * as ReactDOMClient from 'react-dom/client'\nimport {\n queries,\n Queries,\n BoundFunction,\n prettyFormat,\n Config as ConfigDTL,\n} from '@testing-library/dom'\nimport {act as reactDeprecatedAct} from 'react-dom/test-utils'\n//@ts-ignore\nimport {act as reactAct} from 'react'\n\nexport * from '@testing-library/dom'\n\nexport interface Config extends ConfigDTL {\n reactStrictMode: boolean\n}\n\nexport interface ConfigFn {\n (existingConfig: Config): Partial\n}\n\nexport function configure(configDelta: ConfigFn | Partial): void\n\nexport function getConfig(): Config\n\nexport type RenderResult<\n Q extends Queries = typeof queries,\n Container extends RendererableContainer | HydrateableContainer = HTMLElement,\n BaseElement extends RendererableContainer | HydrateableContainer = Container,\n> = {\n container: Container\n baseElement: BaseElement\n debug: (\n baseElement?:\n | RendererableContainer\n | HydrateableContainer\n | Array\n | undefined,\n maxLength?: number | undefined,\n options?: prettyFormat.OptionsReceived | undefined,\n ) => void\n rerender: (ui: React.ReactNode) => void\n unmount: () => void\n asFragment: () => DocumentFragment\n} & {[P in keyof Q]: BoundFunction}\n\n/** @deprecated */\nexport type BaseRenderOptions<\n Q extends Queries,\n Container extends RendererableContainer | HydrateableContainer,\n BaseElement extends RendererableContainer | HydrateableContainer,\n> = RenderOptions\n\ntype RendererableContainer = ReactDOMClient.Container\ntype HydrateableContainer = Parameters[0]\n/** @deprecated */\nexport interface ClientRenderOptions<\n Q extends Queries,\n Container extends RendererableContainer,\n BaseElement extends RendererableContainer = Container,\n> extends BaseRenderOptions {\n /**\n * If `hydrate` is set to `true`, then it will render with `ReactDOM.hydrate`. This may be useful if you are using server-side\n * rendering and use ReactDOM.hydrate to mount your components.\n *\n * @see https://testing-library.com/docs/react-testing-library/api/#hydrate)\n */\n hydrate?: false | undefined\n}\n/** @deprecated */\nexport interface HydrateOptions<\n Q extends Queries,\n Container extends HydrateableContainer,\n BaseElement extends HydrateableContainer = Container,\n> extends BaseRenderOptions {\n /**\n * If `hydrate` is set to `true`, then it will render with `ReactDOM.hydrate`. This may be useful if you are using server-side\n * rendering and use ReactDOM.hydrate to mount your components.\n *\n * @see https://testing-library.com/docs/react-testing-library/api/#hydrate)\n */\n hydrate: true\n}\n\nexport interface RenderOptions<\n Q extends Queries = typeof queries,\n Container extends RendererableContainer | HydrateableContainer = HTMLElement,\n BaseElement extends RendererableContainer | HydrateableContainer = Container,\n> {\n /**\n * By default, React Testing Library will create a div and append that div to the document.body. Your React component will be rendered in the created div. If you provide your own HTMLElement container via this option,\n * it will not be appended to the document.body automatically.\n *\n * For example: If you are unit testing a `` element, it cannot be a child of a div. In this case, you can\n * specify a table as the render container.\n *\n * @see https://testing-library.com/docs/react-testing-library/api/#container\n */\n container?: Container | undefined\n /**\n * Defaults to the container if the container is specified. Otherwise `document.body` is used for the default. This is used as\n * the base element for the queries as well as what is printed when you use `debug()`.\n *\n * @see https://testing-library.com/docs/react-testing-library/api/#baseelement\n */\n baseElement?: BaseElement | undefined\n /**\n * If `hydrate` is set to `true`, then it will render with `ReactDOM.hydrate`. This may be useful if you are using server-side\n * rendering and use ReactDOM.hydrate to mount your components.\n *\n * @see https://testing-library.com/docs/react-testing-library/api/#hydrate)\n */\n hydrate?: boolean | undefined\n /**\n * Only works if used with React 18.\n * Set to `true` if you want to force synchronous `ReactDOM.render`.\n * Otherwise `render` will default to concurrent React if available.\n */\n legacyRoot?: boolean | undefined\n /**\n * Only supported in React 19.\n * Callback called when React catches an error in an Error Boundary.\n * Called with the error caught by the Error Boundary, and an `errorInfo` object containing the `componentStack`.\n *\n * @see {@link https://react.dev/reference/react-dom/client/createRoot#parameters createRoot#options}\n */\n onCaughtError?: ReactDOMClient.RootOptions extends {\n onCaughtError?: infer OnCaughtError\n }\n ? OnCaughtError\n : never\n /**\n * Callback called when React automatically recovers from errors.\n * Called with an error React throws, and an `errorInfo` object containing the `componentStack`.\n * Some recoverable errors may include the original error cause as `error.cause`.\n *\n * @see {@link https://react.dev/reference/react-dom/client/createRoot#parameters createRoot#options}\n */\n onRecoverableError?: ReactDOMClient.RootOptions['onRecoverableError']\n /**\n * Not supported at the moment\n */\n onUncaughtError?: never\n /**\n * Queries to bind. Overrides the default set from DOM Testing Library unless merged.\n *\n * @see https://testing-library.com/docs/react-testing-library/api/#queries\n */\n queries?: Q | undefined\n /**\n * Pass a React Component as the wrapper option to have it rendered around the inner element. This is most useful for creating\n * reusable custom render functions for common data providers. See setup for examples.\n *\n * @see https://testing-library.com/docs/react-testing-library/api/#wrapper\n */\n wrapper?: React.JSXElementConstructor<{children: React.ReactNode}> | undefined\n /**\n * When enabled, is rendered around the inner element.\n * If defined, overrides the value of `reactStrictMode` set in `configure`.\n */\n reactStrictMode?: boolean\n}\n\ntype Omit = Pick>\n\n/**\n * Render into a container which is appended to document.body. It should be used with cleanup.\n */\nexport function render<\n Q extends Queries = typeof queries,\n Container extends RendererableContainer | HydrateableContainer = HTMLElement,\n BaseElement extends RendererableContainer | HydrateableContainer = Container,\n>(\n ui: React.ReactNode,\n options: RenderOptions,\n): RenderResult\nexport function render(\n ui: React.ReactNode,\n options?: Omit | undefined,\n): RenderResult\n\nexport interface RenderHookResult {\n /**\n * Triggers a re-render. The props will be passed to your renderHook callback.\n */\n rerender: (props?: Props) => void\n /**\n * This is a stable reference to the latest value returned by your renderHook\n * callback\n */\n result: {\n /**\n * The value returned by your renderHook callback\n */\n current: Result\n }\n /**\n * Unmounts the test component. This is useful for when you need to test\n * any cleanup your useEffects have.\n */\n unmount: () => void\n}\n\n/** @deprecated */\nexport type BaseRenderHookOptions<\n Props,\n Q extends Queries,\n Container extends RendererableContainer | HydrateableContainer,\n BaseElement extends Element | DocumentFragment,\n> = RenderHookOptions\n\n/** @deprecated */\nexport interface ClientRenderHookOptions<\n Props,\n Q extends Queries,\n Container extends Element | DocumentFragment,\n BaseElement extends Element | DocumentFragment = Container,\n> extends BaseRenderHookOptions {\n /**\n * If `hydrate` is set to `true`, then it will render with `ReactDOM.hydrate`. This may be useful if you are using server-side\n * rendering and use ReactDOM.hydrate to mount your components.\n *\n * @see https://testing-library.com/docs/react-testing-library/api/#hydrate)\n */\n hydrate?: false | undefined\n}\n\n/** @deprecated */\nexport interface HydrateHookOptions<\n Props,\n Q extends Queries,\n Container extends Element | DocumentFragment,\n BaseElement extends Element | DocumentFragment = Container,\n> extends BaseRenderHookOptions {\n /**\n * If `hydrate` is set to `true`, then it will render with `ReactDOM.hydrate`. This may be useful if you are using server-side\n * rendering and use ReactDOM.hydrate to mount your components.\n *\n * @see https://testing-library.com/docs/react-testing-library/api/#hydrate)\n */\n hydrate: true\n}\n\nexport interface RenderHookOptions<\n Props,\n Q extends Queries = typeof queries,\n Container extends RendererableContainer | HydrateableContainer = HTMLElement,\n BaseElement extends RendererableContainer | HydrateableContainer = Container,\n> extends BaseRenderOptions {\n /**\n * The argument passed to the renderHook callback. Can be useful if you plan\n * to use the rerender utility to change the values passed to your hook.\n */\n initialProps?: Props | undefined\n}\n\n/**\n * Allows you to render a hook within a test React component without having to\n * create that component yourself.\n */\nexport function renderHook<\n Result,\n Props,\n Q extends Queries = typeof queries,\n Container extends RendererableContainer | HydrateableContainer = HTMLElement,\n BaseElement extends RendererableContainer | HydrateableContainer = Container,\n>(\n render: (initialProps: Props) => Result,\n options?: RenderHookOptions | undefined,\n): RenderHookResult\n\n/**\n * Unmounts React trees that were mounted with render.\n */\nexport function cleanup(): void\n\n/**\n * Simply calls React.act(cb)\n * If that's not available (older version of react) then it\n * simply calls the deprecated version which is ReactTestUtils.act(cb)\n */\n// IfAny from https://stackoverflow.com/a/61626123/3406963\nexport const act: 0 extends 1 & typeof reactAct\n ? typeof reactDeprecatedAct\n : typeof reactAct\n"
},
{
"path": "types/pure.d.ts",
"content": "export * from './'\n"
},
{
"path": "types/test.tsx",
"content": "import * as React from 'react'\nimport {render, fireEvent, screen, waitFor, renderHook} from '.'\nimport * as pure from './pure'\n\nexport async function testRender() {\n const view = render()\n\n // single queries\n view.getByText('foo')\n view.queryByText('foo')\n await view.findByText('foo')\n\n // multiple queries\n view.getAllByText('bar')\n view.queryAllByText('bar')\n await view.findAllByText('bar')\n\n // helpers\n const {container, rerender, debug} = view\n expectType(container)\n return {container, rerender, debug}\n}\n\nexport async function testPureRender() {\n const view = pure.render()\n\n // single queries\n view.getByText('foo')\n view.queryByText('foo')\n await view.findByText('foo')\n\n // multiple queries\n view.getAllByText('bar')\n view.queryAllByText('bar')\n await view.findAllByText('bar')\n\n // helpers\n const {container, rerender, debug} = view\n expectType(container)\n return {container, rerender, debug}\n}\n\nexport function testRenderOptions() {\n const container = document.createElement('div')\n const options = {container}\n const {container: returnedContainer} = render(, options)\n expectType(returnedContainer)\n\n render(, {wrapper: () => null})\n}\n\nexport function testSVGRenderOptions() {\n const container = document.createElementNS(\n 'http://www.w3.org/2000/svg',\n 'svg',\n )\n const options = {container}\n const {container: returnedContainer} = render(, options)\n expectType(returnedContainer)\n}\n\nexport function testFireEvent() {\n const {container} = render()\n fireEvent.click(container)\n}\n\nexport function testConfigure() {\n // test for DTL's config\n pure.configure({testIdAttribute: 'foobar'})\n pure.configure(existingConfig => ({\n testIdAttribute: `modified-${existingConfig.testIdAttribute}`,\n }))\n\n // test for RTL's config\n pure.configure({reactStrictMode: true})\n pure.configure(existingConfig => ({\n reactStrictMode: !existingConfig.reactStrictMode,\n }))\n}\n\nexport function testGetConfig() {\n // test for DTL's config\n pure.getConfig().testIdAttribute\n\n // test for RTL's config\n pure.getConfig().reactStrictMode\n}\n\nexport function testDebug() {\n const {debug, getAllByTestId} = render(\n <>\n
\n }\n\n return pure.renderHook(hook, {...options})\n}\n\nexport function testBaseElement() {\n const {baseElement: baseDefaultElement} = render()\n expectType(baseDefaultElement)\n\n const container = document.createElement('input')\n const {baseElement: baseElementFromContainer} = render(, {container})\n expectType(\n baseElementFromContainer,\n )\n\n const baseElementOption = document.createElement('input')\n const {baseElement: baseElementFromOption} = render(, {\n baseElement: baseElementOption,\n })\n expectType(\n baseElementFromOption,\n )\n}\n\nexport function testRenderHook() {\n const {result, rerender, unmount} = renderHook(() => React.useState(2)[0])\n\n expectType(result.current)\n\n rerender()\n\n unmount()\n\n renderHook(() => null, {wrapper: () => null})\n}\n\nexport function testRenderHookProps() {\n const {result, rerender, unmount} = renderHook(\n ({defaultValue}) => React.useState(defaultValue)[0],\n {initialProps: {defaultValue: 2}},\n )\n\n expectType(result.current)\n\n rerender()\n\n unmount()\n}\n\nexport function testContainer() {\n render('a', {container: document.createElement('div')})\n render('a', {container: document.createDocumentFragment()})\n // Only allowed in React 19\n render('a', {container: document})\n render('a', {container: document.createElement('div'), hydrate: true})\n // Only allowed for createRoot but typing `render` appropriately makes it harder to compose.\n render('a', {container: document.createDocumentFragment(), hydrate: true})\n render('a', {container: document, hydrate: true})\n\n renderHook(() => null, {container: document.createElement('div')})\n renderHook(() => null, {container: document.createDocumentFragment()})\n // Only allowed in React 19\n renderHook(() => null, {container: document})\n renderHook(() => null, {\n container: document.createElement('div'),\n hydrate: true,\n })\n // Only allowed for createRoot but typing `render` appropriately makes it harder to compose.\n renderHook(() => null, {\n container: document.createDocumentFragment(),\n hydrate: true,\n })\n renderHook(() => null, {container: document, hydrate: true})\n}\n\nexport function testErrorHandlers() {\n // This test runs under both React 18 and React 19 types. For React 19, verify that this works with `\"@types/react\": \"npm:types-react@rc\"`.\n render(null, {\n // This option is intended to type-check successfully with React 19 types\n // but to fail (produce a type error) with React 18 types.\n //\n // > Why use `@ts-ignore` instead of `@ts-expect-error`?\n // > Semantically, `@ts-expect-error` would be the right choice here:\n // > it would fail under React 18 types and be unused under React 19 types.\n // > However, when running with React 19 types, TypeScript reports that\n // > `@ts-expect-error` is unused, which causes unwanted noise in CI.\n // > To avoid those unused-directive diagnostics while still supporting\n // > both React 18 and React 19 typings, we pragmatically use `@ts-ignore`,\n // > acknowledging that it suppresses any real type errors at this site.\n //\n // eslint-disable-next-line @typescript-eslint/ban-ts-comment, @typescript-eslint/prefer-ts-expect-error\n // @ts-ignore\n onCaughtError: () => {},\n })\n render(null, {\n // Should never work as it's not supported yet.\n // eslint-disable-next-line @typescript-eslint/ban-ts-comment\n // @ts-expect-error\n onUncaughtError: () => {},\n })\n render(null, {\n onRecoverableError: (error, errorInfo) => {\n console.error(error)\n console.log(errorInfo.componentStack)\n },\n })\n}\n\n/*\neslint\n testing-library/prefer-explicit-assert: \"off\",\n testing-library/no-wait-for-empty-callback: \"off\",\n testing-library/prefer-screen-queries: \"off\"\n*/\n\n// https://stackoverflow.com/questions/53807517/how-to-test-if-two-types-are-exactly-the-same\ntype IfEquals = (() => G extends T\n ? 1\n : 2) extends () => G extends U ? 1 : 2\n ? Yes\n : No\n\n/**\n * Issues a type error if `Expected` is not identical to `Actual`.\n *\n * `Expected` should be declared when invoking `expectType`.\n * `Actual` should almost always we be a `typeof value` statement.\n *\n * Source: https://github.com/mui-org/material-ui/blob/6221876a4b468a3330ffaafa8472de7613933b87/packages/material-ui-types/index.d.ts#L73-L84\n *\n * @example `expectType(value)`\n * TypeScript issues a type error since `value is not assignable to never`.\n * This means `typeof value` is not identical to `number | string`\n * @param actual\n */\ndeclare function expectType(\n actual: IfEquals,\n): void\n"
},
{
"path": "types/tsconfig.json",
"content": "{\n \"extends\": \"../node_modules/kcd-scripts/shared-tsconfig.json\",\n \"compilerOptions\": {\n \"exactOptionalPropertyTypes\": true,\n \"skipLibCheck\": false\n },\n \"include\": [\".\"]\n}\n"
}
]
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![\"Ryan](\"https://avatars1.githubusercontent.com/u/2430381?v=4?s=100\")
![\"Daniel](\"https://avatars0.githubusercontent.com/u/8008023?v=4?s=100\")
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![\"Joe](\"https://avatars0.githubusercontent.com/u/1195863?v=4?s=100\")
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![\"Daniel](\"https://avatars0.githubusercontent.com/u/1096340?v=4?s=100\")
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![\"Ian](\"https://avatars1.githubusercontent.com/u/6355370?v=4?s=100\")
![\"Joel](\"https://avatars0.githubusercontent.com/u/157877?v=4?s=100\")
![\"Alejandro](\"https://avatars3.githubusercontent.com/u/2413802?v=4?s=100\")
![\"Brandon](\"https://avatars2.githubusercontent.com/u/11020406?v=4?s=100\")
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![\"Minh](\"https://avatars3.githubusercontent.com/u/2852660?v=4?s=100\")
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![\"Sunil](\"https://avatars2.githubusercontent.com/u/18808?v=4?s=100\")
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![\"João](\"https://avatars1.githubusercontent.com/u/1075053?v=4?s=100\")
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