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#8708 Add e2e for combination of globalSetup and globalSetupPerWorker
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‎e2e/__tests__/globalSetupAndPerWorker.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 {cleanup, runYarnInstall} from '../Utils';
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import {json as runWithJson} from '../runJest';
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const DIR = path.join(tmpdir(), 'jest-global-setup-and-per-worker');
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const project1DIR = path.join(
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tmpdir(),
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'jest-global-setup-and-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-setup-and-per-worker-project-2',
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);
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const e2eDir = path.resolve(__dirname, '../global-setup-and-per-worker');
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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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});
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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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});
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test('globalSetup triggered once + globalSetupPerWorker triggered once per worker', () => {
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const setupPath = path.join(e2eDir, 'setup.js');
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const setupPerWorkerPath = path.join(e2eDir, 'setup-per-worker.js');
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const result = runWithJson(e2eDir, [
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'--maxWorkers=2',
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'--workerIdleMemoryLimit=100MB',
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`--globalSetup=${setupPath}`,
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`--globalSetupPerWorker=${setupPerWorkerPath}`,
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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(3);
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const content = files.map(file => {
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const data = fs.readFileSync(path.join(DIR, file), 'utf8');
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return data.split('\n');
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});
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for (const [firstLine, secondLine] of content) {
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if (secondLine) {
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expect(firstLine).toBe('setup-per-worker');
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} else {
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expect(firstLine).toBe('setup');
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}
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}
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const secondLines = content.map(([, secondLine]) => secondLine);
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secondLines.sort();
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expect(secondLines).toEqual(['1', '2', undefined]);
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});
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test('globalSetup + globalSetupPerWorker with worker threads', () => {
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const setupPath = path.join(e2eDir, 'setup.js');
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const setupPerWorkerPath = path.join(e2eDir, 'setup-per-worker.js');
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const result = runWithJson(e2eDir, [
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'--maxWorkers=2',
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'--workerIdleMemoryLimit=100MB',
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`--globalSetup=${setupPath}`,
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`--globalSetupPerWorker=${setupPerWorkerPath}`,
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'--testPathPatterns=__tests__',
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'--workerThreads',
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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(3);
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const content = files.map(file => {
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const data = fs.readFileSync(path.join(DIR, file), 'utf8');
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return data.split('\n');
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});
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for (const [firstLine, secondLine] of content) {
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if (secondLine) {
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expect(firstLine).toBe('setup-per-worker');
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} else {
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expect(firstLine).toBe('setup');
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}
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}
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const secondLines = content.map(([, secondLine]) => secondLine);
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secondLines.sort();
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expect(secondLines).toEqual(['1', '2', undefined]);
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});
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test('multiple projects', () => {
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const configPath = path.resolve(e2eDir, 'projects.jest.config.js');
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const result = runWithJson(e2eDir, [
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'--maxWorkers=2',
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'--workerIdleMemoryLimit=100MB',
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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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});

‎e2e/global-setup-and-per-worker/__tests__/setup1.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-setup-and-per-worker');
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test('should exist setup files', () => {
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const files = fs.readdirSync(DIR);
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expect(files).toHaveLength(3);
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const content = files.map(file => {
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const data = fs.readFileSync(path.join(DIR, file), 'utf8');
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return data.split('\n');
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});
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for (const [firstLine, secondLine] of content) {
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if (secondLine) {
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expect(firstLine).toBe('setup-per-worker');
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} else {
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expect(firstLine).toBe('setup');
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}
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}
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const secondLines = content.map(([, secondLine]) => secondLine);
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secondLines.sort();
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expect(secondLines).toEqual(['1', '2', undefined]);
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expect(secondLines).toEqual(
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expect.arrayContaining([process.env.JEST_WORKER_ID]),
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);
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});

‎e2e/global-setup-and-per-worker/__tests__/setup2.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-setup-and-per-worker');
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test('should exist setup files', () => {
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const files = fs.readdirSync(DIR);
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expect(files).toHaveLength(3);
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const content = files.map(file => {
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const data = fs.readFileSync(path.join(DIR, file), 'utf8');
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return data.split('\n');
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});
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for (const [firstLine, secondLine] of content) {
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if (secondLine) {
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expect(firstLine).toBe('setup-per-worker');
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} else {
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expect(firstLine).toBe('setup');
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}
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}
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const secondLines = content.map(([, secondLine]) => secondLine);
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secondLines.sort();
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expect(secondLines).toEqual(['1', '2', undefined]);
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expect(secondLines).toEqual(
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expect.arrayContaining([process.env.JEST_WORKER_ID]),
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);
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});

‎e2e/global-setup-and-per-worker/__tests__/setup3.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-setup-and-per-worker');
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test('should exist setup files', () => {
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const files = fs.readdirSync(DIR);
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expect(files).toHaveLength(3);
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const content = files.map(file => {
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const data = fs.readFileSync(path.join(DIR, file), 'utf8');
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return data.split('\n');
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});
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for (const [firstLine, secondLine] of content) {
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if (secondLine) {
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expect(firstLine).toBe('setup-per-worker');
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} else {
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expect(firstLine).toBe('setup');
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}
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}
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const secondLines = content.map(([, secondLine]) => secondLine);
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secondLines.sort();
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expect(secondLines).toEqual(['1', '2', undefined]);
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expect(secondLines).toEqual(
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expect.arrayContaining([process.env.JEST_WORKER_ID]),
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);
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});

‎e2e/global-setup-and-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-setup-and-per-worker/package.json

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{
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"jest": {
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"testEnvironment": "node",
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"transformIgnorePatterns": [
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"/node_modules/",
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"/packages/"
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]
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},
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"devDependencies": {
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"@babel/core": "^7.0.0",
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"@babel/preset-env": "^7.0.0",
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"@babel/preset-flow": "^7.0.0",
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"jest-util": "*"
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}
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}

‎e2e/global-setup-and-per-worker/project-1/setup-per-worker.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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const crypto = require('crypto');
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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 {createDirectory} = require('jest-util');
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const DIR = path.join(
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os.tmpdir(),
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'jest-global-setup-and-per-worker-project-1',
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);
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module.exports = function () {
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return new Promise((resolve, reject) => {
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createDirectory(DIR);
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const fileId = crypto.randomBytes(20).toString('hex');
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const data = ['setup-per-worker', process.env.JEST_WORKER_ID].join('\n');
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fs.writeFileSync(path.join(DIR, fileId), data);
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resolve();
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});
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};

‎e2e/global-setup-and-per-worker/project-1/setup.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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const crypto = require('crypto');
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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 {createDirectory} = require('jest-util');
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const DIR = path.join(
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os.tmpdir(),
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'jest-global-setup-and-per-worker-project-1',
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);
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module.exports = function () {
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return new Promise((resolve, reject) => {
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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), 'setup');
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resolve();
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});
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};

‎e2e/global-setup-and-per-worker/project-1/setup1.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(
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os.tmpdir(),
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'jest-global-setup-and-per-worker-project-1',
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);
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test('should exist setup files', () => {
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const files = fs.readdirSync(DIR);
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expect(files).toHaveLength(3);
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const content = files.map(file => {
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const data = fs.readFileSync(path.join(DIR, file), 'utf8');
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return data.split('\n');
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});
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for (const [firstLine, secondLine] of content) {
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if (secondLine) {
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expect(firstLine).toBe('setup-per-worker');
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} else {
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expect(firstLine).toBe('setup');
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}
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}
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const secondLines = content.map(([, secondLine]) => secondLine);
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secondLines.sort();
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expect(secondLines).toEqual(['1', '2', undefined]);
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expect(secondLines).toEqual(
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expect.arrayContaining([process.env.JEST_WORKER_ID]),
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);
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});

‎e2e/global-setup-and-per-worker/project-2/setup-per-worker.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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const crypto = require('crypto');
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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 {createDirectory} = require('jest-util');
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const DIR = path.join(
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os.tmpdir(),
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'jest-global-setup-and-per-worker-project-2',
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);
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module.exports = function () {
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return new Promise((resolve, reject) => {
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createDirectory(DIR);
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const fileId = crypto.randomBytes(20).toString('hex');
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const data = ['setup-per-worker', process.env.JEST_WORKER_ID].join('\n');
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fs.writeFileSync(path.join(DIR, fileId), data);
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resolve();
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});
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};

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