How to use invalidSetupWithNamedExport method in Jest

Best JavaScript code snippet using jest


Source:globalSetup.test.js Github


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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 os from 'os';11import path from 'path';12import runJest, {json as runWithJson} from '../runJest';13import {cleanup} from '../Utils';14const DIR = path.join(os.tmpdir(), 'jest-global-setup');15const project1DIR = path.join(os.tmpdir(), 'jest-global-setup-project-1');16const project2DIR = path.join(os.tmpdir(), 'jest-global-setup-project-2');17const customTransformDIR = path.join(18 os.tmpdir(),19 'jest-global-setup-custom-transform',20);21beforeEach(() => {22 cleanup(DIR);23 cleanup(project1DIR);24 cleanup(project2DIR);25 cleanup(customTransformDIR);26});27afterAll(() => {28 cleanup(DIR);29 cleanup(project1DIR);30 cleanup(project2DIR);31 cleanup(customTransformDIR);32});33test('globalSetup is triggered once before all test suites', () => {34 const setupPath = path.resolve(__dirname, '../global-setup/setup.js');35 const result = runWithJson('global-setup', [36 `--globalSetup=${setupPath}`,37 `--testPathPattern=__tests__`,38 ]);39 expect(result.status).toBe(0);40 const files = fs.readdirSync(DIR);41 expect(files).toHaveLength(1);42 const setup = fs.readFileSync(path.join(DIR, files[0]), 'utf8');43 expect(setup).toBe('setup');44});45test('jest throws an error when globalSetup does not export a function', () => {46 const setupPath = path.resolve(__dirname, '../global-setup/invalidSetup.js');47 const {status, stderr} = runJest('global-setup', [48 `--globalSetup=${setupPath}`,49 `--testPathPattern=__tests__`,50 ]);51 expect(status).toBe(1);52 expect(stderr).toMatch(53 `TypeError: globalSetup file must export a function at ${setupPath}`,54 );55});56test('globalSetup function gets jest config object as a parameter', () => {57 const setupPath = path.resolve(58 __dirname,59 '../global-setup/setupWithConfig.js',60 );61 const testPathPattern = 'pass';62 const result = runJest('global-setup', [63 `--globalSetup=${setupPath}`,64 `--testPathPattern=${testPathPattern}`,65 ]);66 expect(result.stdout).toBe(testPathPattern);67});68test('should call globalSetup function of multiple projects', () => {69 const configPath = path.resolve(70 __dirname,71 '../global-setup/projects.jest.config.js',72 );73 const result = runWithJson('global-setup', [`--config=${configPath}`]);74 expect(result.status).toBe(0);75 expect(fs.existsSync(DIR)).toBe(true);76 expect(fs.existsSync(project1DIR)).toBe(true);77 expect(fs.existsSync(project2DIR)).toBe(true);78});79test('should not call a globalSetup of a project if there are no tests to run from this project', () => {80 const configPath = path.resolve(81 __dirname,82 '../global-setup/projects.jest.config.js',83 );84 const result = runWithJson('global-setup', [85 `--config=${configPath}`,86 '--testPathPattern=project-1',87 ]);88 expect(result.status).toBe(0);89 expect(fs.existsSync(DIR)).toBe(true);90 expect(fs.existsSync(project1DIR)).toBe(true);91 expect(fs.existsSync(project2DIR)).toBe(false);92});93test('should not call any globalSetup if there are no tests to run', () => {94 const configPath = path.resolve(95 __dirname,96 '../global-setup/projects.jest.config.js',97 );98 const result = runWithJson('global-setup', [99 `--config=${configPath}`,100 // onlyChanged ensures there are no tests to run101 '--onlyChanged',102 ]);103 expect(result.status).toBe(0);104 expect(fs.existsSync(DIR)).toBe(false);105 expect(fs.existsSync(project1DIR)).toBe(false);106 expect(fs.existsSync(project2DIR)).toBe(false);107});108test('globalSetup works with default export', () => {109 const setupPath = path.resolve(110 __dirname,111 '../global-setup/setupWithDefaultExport.js',112 );113 const testPathPattern = 'pass';114 const result = runJest('global-setup', [115 `--globalSetup=${setupPath}`,116 `--testPathPattern=${testPathPattern}`,117 ]);118 expect(result.stdout).toBe(testPathPattern);119});120test('globalSetup throws with named export', () => {121 const setupPath = path.resolve(122 __dirname,123 '../global-setup/invalidSetupWithNamedExport.js',124 );125 const {status, stderr} = runJest('global-setup', [126 `--globalSetup=${setupPath}`,127 `--testPathPattern=__tests__`,128 ]);129 expect(status).toBe(1);130 expect(stderr).toMatch(131 `TypeError: globalSetup file must export a function at ${setupPath}`,132 );133});134test('should not transpile the transformer', () => {135 const {status} = runJest('global-setup-custom-transform', [`--no-cache`]);136 expect(status).toBe(0);...

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Source:invalidSetupWithNamedExport.js Github


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...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 invalidSetupWithNamedExport(jestConfig): void {8 console.log(jestConfig.testPathPattern);9}...

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