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#8708 Copy e2e test of globalTeardown for globalTeardownPerWorker
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‎e2e/__tests__/globalTeardownPerWorker.test.ts

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/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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import {tmpdir} from 'os';
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import * as path from 'path';
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import * as fs from 'graceful-fs';
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import {createDirectory} from 'jest-util';
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import {cleanup, runYarnInstall} from '../Utils';
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import runJest, {json as runWithJson} from '../runJest';
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const DIR = path.join(tmpdir(), 'jest-global-teardown-per-worker');
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const project1DIR = path.join(
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tmpdir(),
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'jest-global-teardown-per-worker-project-1',
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);
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const project2DIR = path.join(
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tmpdir(),
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'jest-global-teardown-per-worker-project-2',
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);
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const e2eDir = path.resolve(__dirname, '../global-teardown-per-worker');
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const esmTmpDir = path.join(tmpdir(), 'jest-global-teardown-per-worker-esm');
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beforeAll(() => {
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runYarnInstall(e2eDir);
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});
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beforeEach(() => {
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cleanup(DIR);
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cleanup(project1DIR);
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cleanup(project2DIR);
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cleanup(esmTmpDir);
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});
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afterAll(() => {
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cleanup(DIR);
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cleanup(project1DIR);
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cleanup(project2DIR);
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cleanup(esmTmpDir);
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});
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test('globalTeardownPerWorker is triggered once after all test suites per worker', () => {
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createDirectory(DIR);
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const teardownPath = path.resolve(e2eDir, 'teardown.js');
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const result = runWithJson('global-teardown-per-worker', [
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`--globalTeardown=${teardownPath}`,
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'--testPathPatterns=__tests__',
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]);
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expect(result.exitCode).toBe(0);
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const files = fs.readdirSync(DIR);
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expect(files).toHaveLength(1);
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const teardown = fs.readFileSync(path.join(DIR, files[0]), 'utf8');
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expect(teardown).toBe('teardown');
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});
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test('jest throws an error when globalTeardownPerWorker does not export a function', () => {
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const teardownPath = path.resolve(e2eDir, 'invalidTeardown.js');
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const {exitCode, stderr} = runJest(e2eDir, [
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`--globalTeardown=${teardownPath}`,
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'--testPathPatterns=__tests__',
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]);
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expect(exitCode).toBe(1);
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expect(stderr).toContain('Jest: Got error running globalTeardown');
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expect(stderr).toContain(
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`globalTeardown file must export a function at ${teardownPath}`,
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);
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});
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test('globalTeardownPerWorker function gets global config object and project config as parameters', () => {
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const teardownPath = path.resolve(e2eDir, 'teardownWithConfig.js');
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const result = runJest(e2eDir, [
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`--globalTeardown=${teardownPath}`,
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'--testPathPatterns=pass',
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'--cache=true',
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]);
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expect(result.stdout).toBe("[ 'pass' ]\ntrue");
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});
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test('should call globalTeardownPerWorker function of multiple projects', () => {
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const configPath = path.resolve(e2eDir, 'projects.jest.config.js');
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const result = runWithJson('global-teardown-per-worker', [
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`--config=${configPath}`,
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]);
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expect(result.exitCode).toBe(0);
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expect(fs.existsSync(DIR)).toBe(true);
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expect(fs.existsSync(project1DIR)).toBe(true);
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expect(fs.existsSync(project2DIR)).toBe(true);
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});
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test('should not call a globalTeardownPerWorker of a project if there are no tests to run from this project', () => {
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const configPath = path.resolve(e2eDir, 'projects.jest.config.js');
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const result = runWithJson('global-teardown-per-worker', [
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`--config=${configPath}`,
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'--testPathPatterns=teardown1',
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]);
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expect(result.exitCode).toBe(0);
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expect(fs.existsSync(DIR)).toBe(true);
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expect(fs.existsSync(project1DIR)).toBe(true);
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expect(fs.existsSync(project2DIR)).toBe(false);
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});
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test('globalTeardownPerWorker works with default export', () => {
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const teardownPath = path.resolve(e2eDir, 'teardownWithDefaultExport.js');
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const result = runJest(e2eDir, [
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`--globalTeardown=${teardownPath}`,
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'--testPathPatterns=pass',
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'--cache=true',
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]);
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expect(result.stdout).toBe("[ 'pass' ]\ntrue");
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});
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test('globalTeardownPerWorker throws with named export', () => {
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const teardownPath = path.resolve(
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e2eDir,
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'invalidTeardownWithNamedExport.js',
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);
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const {exitCode, stderr} = runJest(e2eDir, [
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`--globalTeardown=${teardownPath}`,
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'--testPathPatterns=__tests__',
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]);
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expect(exitCode).toBe(1);
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expect(stderr).toContain('Jest: Got error running globalTeardown');
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expect(stderr).toContain(
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`globalTeardown file must export a function at ${teardownPath}`,
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);
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});
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test('globalTeardownPerWorker works with ESM modules', () => {
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const {exitCode} = runJest('global-teardown-per-worker-esm', ['--no-cache'], {
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nodeOptions: '--experimental-vm-modules --no-warnings',
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});
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expect(exitCode).toBe(0);
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});

‎e2e/global-teardown-per-worker-esm/__tests__/test.js

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/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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import * as os from 'os';
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import * as path from 'path';
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import fs from 'graceful-fs';
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import greeting from '../';
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const DIR = path.join(os.tmpdir(), 'jest-global-teardown-per-worker-esm');
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test('should not exist teardown file', () => {
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expect(fs.existsSync(DIR)).toBe(false);
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});

‎e2e/global-teardown-per-worker-esm/index.js

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/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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export default 'hello!';

‎e2e/global-teardown-per-worker-esm/package.json

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{
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"type": "module",
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"jest": {
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"testEnvironment": "node",
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"globalTeardown": "<rootDir>/teardown.js",
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"transform": {}
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}
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}

‎e2e/global-teardown-per-worker-esm/teardown.js

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/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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import * as crypto from 'crypto';
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import * as os from 'os';
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import * as path from 'path';
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import fs from 'graceful-fs';
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import {createDirectory} from 'jest-util';
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const DIR = path.join(os.tmpdir(), 'jest-global-teardown-per-worker-esm');
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export default function () {
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return new Promise(resolve => {
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createDirectory(DIR);
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const fileId = crypto.randomBytes(20).toString('hex');
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fs.writeFileSync(path.join(DIR, fileId), 'teardown');
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resolve();
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});
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}

‎e2e/global-teardown-per-worker/__tests__/teardown1.test.js

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/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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'use strict';
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const fs = require('fs');
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const os = require('os');
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const path = require('path');
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const DIR = path.join(os.tmpdir(), 'jest-global-teardown-per-worker');
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test('should not exist teardown file', () => {
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const files = fs.readdirSync(DIR);
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expect(files).toHaveLength(0);
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});

‎e2e/global-teardown-per-worker/__tests__/teardown2.test.js

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/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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'use strict';
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const fs = require('fs');
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const os = require('os');
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const path = require('path');
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const DIR = path.join(os.tmpdir(), 'jest-global-teardown-per-worker');
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test('should not exist teardown file', () => {
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const files = fs.readdirSync(DIR);
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expect(files).toHaveLength(0);
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});

‎e2e/global-teardown-per-worker/__tests__/teardown3.test.js

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/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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'use strict';
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const fs = require('fs');
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const os = require('os');
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const path = require('path');
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const DIR = path.join(os.tmpdir(), 'jest-global-teardown-per-worker');
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test('should not exist teardown file', () => {
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const files = fs.readdirSync(DIR);
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expect(files).toHaveLength(0);
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});

‎e2e/global-teardown-per-worker/babel.config.js

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/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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module.exports = {
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presets: ['@babel/preset-env', '@babel/preset-flow'],
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};

‎e2e/global-teardown-per-worker/custom-tests-dir/pass.test.js

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/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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test('should pass', () => {});

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