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jest-t-assert\n\n[![Build Status][travis-badge]][travis]\n[![npm][npm-badge]][npm-link]\n\nUse [tape][tape] style assertions with [Jest][jest]. The assertions are very\nsimilar to [AVA][ava].\n\n*If you just want to migrate from AVA to Jest you should use\n[jest-codemods][codemods] instead.*\n\n## Usage\n\n```javascript\nimport test from 'jest-t-assert';\n\ntest('a test case', t =\u003e {\n  t.true(2 \u003c 10);\n  t.truthy(1);\n  t.not(2, '2');\n  t.deepEqual([1, 2], [1, 2]);\n  t.throws(() =\u003e {\n    throw new Error('This function throws');\n  });\n  t.snapshot({ a: 1, b: 'ok' });\n});\n```\n\nYou can also import `t` directly if you only want to use the assertions without\nthe `test` wrapper. This doesn't break existing tests that use Jest's callback\nmode, where you call `done()`, which is passed as the first argument to the\ntest function.\n\n```javascript\nimport { t } from 'jest-t-assert';\n\ntest('only using the assertions from `t`', () =\u003e {\n  t.true(2 \u003c 10);\n  t.truthy(1);\n  t.not(2, '2');\n  t.deepEqual([1, 2], [1, 2]);\n  t.throws(() =\u003e {\n    throw new Error('This function throws');\n  });\n  t.snapshot({ a: 1, b: 'ok' });\n});\n```\n\n### Asynchronous tests\n\nJest supports returning a promise from the test, so you can do the assertions in\nthe `.then` calls.\n\n```javascript\nimport test from 'jest-t-assert';\n\ntest('promise resolves with the correct value', t =\u003e {\n  return Promise.resolve('value').then(val =\u003e t.is(val, 'value'));\n});\n\ntest('using async/await', async t =\u003e {\n  const val = await Promise.resolve('value');\n  t.is(val, 'value');\n  // await directly\n  t.is(await Promise.resolve('value'), 'value');\n});\n```\n\nIf you need to use the callback mode you have to use `test.cb`, which\nrequires you to end the test manually by calling `t.end()`. It is highly\nrecommended to use promises and `async / await` instead of the callback mode.\n\n```javascript\nimport test from 'jest-t-assert';\n\ntest.cb('a callback', t =\u003e {\n  t.plan(1);\n  setTimeout(() =\u003e {\n    t.pass();\n    t.end();\n  }, 2000);\n});\n```\n\n## API\n\n### `test([title], fn, [timeout])`\n\nRun a test. `fn` will receive `t` as the first argument, which provides the\nassertions. The `timeout` specifies how long (in milliseconds) to wait until the\ntest is aborted.\n\n#### `test.cb([title], fn, [timeout])`\n\nRun a test in callback mode. `fn` will receive `t`, which provides the usual\nassertions and additionally `t.end()`, which must be called to manually end the\ntest. `.cb` can be chained with any of modifiers listed below.  The `timeout`\nspecifies how long (in milliseconds) to wait until the test is aborted.\n\n#### `test.only([title], fn, [timeout])`\n\nOnly run this test. All other tests in the test suite are skipped.\nThe `timeout` specifies how long (in milliseconds) to wait until the test is\naborted.\n\n#### `test.skip([title], fn, [timeout])`\n\nSkip the test. Useful to avoid a failing test without removing it or commenting\nit out.\n\n#### `test.after(fn)`\n\nRuns `fn` after all tests in the test suite have completed.\n\n#### `test.afterEach(fn)`\n\nRuns `fn` after each test in the test suite has completed.\n\n#### `test.before(fn)`\n\nRuns `fn` before any test in the test suite is run.\n\n#### `test.beforeEach(fn)`\n\nRuns `fn` before each test in the test suite is run.\n\n### `t`\n\nThe argument passed to the callback of `test`, which is also exported as `t`.\n\n#### `t.end()`\n\nEnd the test. This is only available when using `test.cb`.\n\n#### `t.plan(count)`\n\nPlan how many assertions are used in the test. The test fails if the number of\nassertions differs from `count`.\n\n#### `t.pass()`\n\nAn assertion that always passes.\n\n#### `t.fail()`\n\nAn assertion that always fails.\n\n#### `t.true(actual)`\n\nAssert that `actual` is `true`.\n\n#### `t.false(actual)`\n\nAssert that `actual` is `false`.\n\n#### `t.truthy(actual)`\n\nAssert that `actual` is truthy.\n\n#### `t.falsy(actual)`\n\nAssert that `actual` is falsy.\n\n#### `t.is(actual, expected)`\n\nAssert that `actual` is equal to `expected` (based on `===`).\n\n#### `t.not(actual, expected)`\n\nAssert that `actual` is not equal to `expected` (based on `===`). The inverse\nof `t.is(actual, expected)`.\n\n#### `t.deepEqual(actual, expected)`\n\nAssert that `actual` is deeply equal to `expected`. This recursively checks the\nequality of all fields.\n\n#### `t.notDeepEqual(actual, expected)`\n\nAssert that `actual` is not deeply equal to `expected`. This recursively checks\nthe equality of all fields. The inverse of `t.deepEqual(actual, expected)`.\n\n#### `t.throws(fn, [error])`\n\nAssert that `fn` throws an error. If `error` is provided, the thrown error must\nmatch it.\n\n#### `t.notThrows(fn)`\n\nAssert that `fn` does not throw an error. The inverse of `t.throws(fn)`.\n\n#### `t.regex(actual, regex)`\n\nAssert that `actual` matches `regex`.\n\n#### `t.notRegex(actual, regex)`\n\nAssert that `actual` does not match `regex`. The inverse of\n`t.regex(actual, regex)`.\n\n#### `t.snapshot(actual)`\n\nAssert that `actual` matches the most recent snapshot.\n\n[ava]: https://github.com/avajs/ava\n[codemods]: https://github.com/skovhus/jest-codemods\n[jest]: https://github.com/facebook/jest\n[npm-badge]: https://img.shields.io/npm/v/jest-t-assert.svg?style=flat-square\n[npm-link]: https://www.npmjs.com/package/jest-t-assert\n[tape]: https://github.com/substack/tape\n[travis]: https://travis-ci.org/jungomi/jest-t-assert\n[travis-badge]: https://img.shields.io/travis/jungomi/jest-t-assert/master.svg?style=flat-square\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fjungomi%2Fjest-t-assert","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fjungomi%2Fjest-t-assert","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fjungomi%2Fjest-t-assert/lists"}