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How to use invalidTeardownWithNamedExport method in Jest

Best JavaScript code snippet using jest

globalTeardown.test.js

Source:globalTeardown.test.js

1/**2 * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.3 *4 * This source code is licensed under the MIT license found in the5 * LICENSE file in the root directory of this source tree.6 * @flow7 */8'use strict';9import fs from 'fs';10import {createDirectory} from 'jest-util';11import os from 'os';12import path from 'path';13import runJest, {json as runWithJson} from '../runJest';14import {cleanup} from '../Utils';15const DIR = path.join(os.tmpdir(), 'jest-global-teardown');16const project1DIR = path.join(os.tmpdir(), 'jest-global-teardown-project-1');17const project2DIR = path.join(os.tmpdir(), 'jest-global-teardown-project-2');18beforeEach(() => {19  cleanup(DIR);20  cleanup(project1DIR);21  cleanup(project2DIR);22});23afterAll(() => {24  cleanup(DIR);25  cleanup(project1DIR);26  cleanup(project2DIR);27});28test('globalTeardown is triggered once after all test suites', () => {29  createDirectory(DIR);30  const teardownPath = path.resolve(31    __dirname,32    '../global-teardown/teardown.js',33  );34  const result = runWithJson('global-teardown', [35    `--globalTeardown=${teardownPath}`,36    `--testPathPattern=__tests__`,37  ]);38  expect(result.status).toBe(0);39  const files = fs.readdirSync(DIR);40  expect(files).toHaveLength(1);41  const teardown = fs.readFileSync(path.join(DIR, files[0]), 'utf8');42  expect(teardown).toBe('teardown');43});44test('jest throws an error when globalTeardown does not export a function', () => {45  const teardownPath = path.resolve(46    __dirname,47    '../global-teardown/invalidTeardown.js',48  );49  const {status, stderr} = runJest('global-teardown', [50    `--globalTeardown=${teardownPath}`,51    `--testPathPattern=__tests__`,52  ]);53  expect(status).toBe(1);54  expect(stderr).toMatch(55    `TypeError: globalTeardown file must export a function at ${teardownPath}`,56  );57});58test('globalTeardown function gets jest config object as a parameter', () => {59  const teardownPath = path.resolve(60    __dirname,61    '../global-teardown/teardownWithConfig.js',62  );63  const testPathPattern = 'pass';64  const result = runJest('global-teardown', [65    `--globalTeardown=${teardownPath}`,66    `--testPathPattern=${testPathPattern}`,67  ]);68  expect(result.stdout).toBe(testPathPattern);69});70test('should call globalTeardown function of multiple projects', () => {71  const configPath = path.resolve(72    __dirname,73    '../global-teardown/projects.jest.config.js',74  );75  const result = runWithJson('global-teardown', [`--config=${configPath}`]);76  expect(result.status).toBe(0);77  expect(fs.existsSync(DIR)).toBe(true);78  expect(fs.existsSync(project1DIR)).toBe(true);79  expect(fs.existsSync(project2DIR)).toBe(true);80});81test('should not call a globalTeardown of a project if there are no tests to run from this project', () => {82  const configPath = path.resolve(83    __dirname,84    '../global-teardown/projects.jest.config.js',85  );86  const result = runWithJson('global-teardown', [87    `--config=${configPath}`,88    '--testPathPattern=project-1',89  ]);90  expect(result.status).toBe(0);91  expect(fs.existsSync(DIR)).toBe(true);92  expect(fs.existsSync(project1DIR)).toBe(true);93  expect(fs.existsSync(project2DIR)).toBe(false);94});95test('globalTeardown works with default export', () => {96  const teardownPath = path.resolve(97    __dirname,98    '../global-teardown/teardownWithDefaultExport.js',99  );100  const testPathPattern = 'pass';101  const result = runJest('global-teardown', [102    `--globalTeardown=${teardownPath}`,103    `--testPathPattern=${testPathPattern}`,104  ]);105  expect(result.stdout).toBe(testPathPattern);106});107test('globalTeardown throws with named export', () => {108  const teardownPath = path.resolve(109    __dirname,110    '../global-teardown/invalidTeardownWithNamedExport.js',111  );112  const {status, stderr} = runJest('global-teardown', [113    `--globalTeardown=${teardownPath}`,114    `--testPathPattern=__tests__`,115  ]);116  expect(status).toBe(1);117  expect(stderr).toMatch(118    `TypeError: globalTeardown file must export a function at ${teardownPath}`,119  );...

invalidTeardownWithNamedExport.js

Source:invalidTeardownWithNamedExport.js

...3 *4 * This source code is licensed under the MIT license found in the5 * LICENSE file in the root directory of this source tree.6 */7function invalidTeardownWithNamedExport(jestConfig): void {8  console.log(jestConfig.testPathPattern);9}...

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