diff --git a/e2e/__tests__/watch_mode_no_access.test.js b/e2e/__tests__/watch_mode_no_access.test.js new file mode 100644 index 000000000000..6d6a3038fe34 --- /dev/null +++ b/e2e/__tests__/watch_mode_no_access.test.js @@ -0,0 +1,77 @@ +/** + * Copyright (c) 2014-present, Facebook, Inc. All rights reserved. + * + * This source code is licensed under the MIT license found in the + * LICENSE file in the root directory of this source tree. + * + * @flow + */ + +'use strict'; + +import fs from 'fs'; +import os from 'os'; +import path from 'path'; +import {cleanup, writeFiles} from '../Utils'; +import {runContinuous} from '../runJest'; + +const DIR = path.resolve(os.tmpdir(), 'watch_mode_no_access'); + +const sleep = time => new Promise(resolve => setTimeout(resolve, time)); + +beforeEach(() => cleanup(DIR)); +afterAll(() => cleanup(DIR)); + +const setupFiles = () => { + writeFiles(DIR, { + '__tests__/foo.spec.js': ` + const foo = require('../foo'); + test('foo', () => { expect(typeof foo).toBe('number'); }); + `, + 'foo.js': ` + module.exports = 0; + `, + 'package.json': JSON.stringify({ + jest: {}, + }), + }); +}; + +let testRun; + +afterEach(async () => { + if (testRun) { + await testRun.end(); + } +}); + +test('does not re-run tests when only access time is modified', async () => { + setupFiles(); + + testRun = runContinuous(DIR, ['--watchAll', '--no-watchman']); + + const testCompletedRE = /Ran all test suites./g; + const numberOfTestRuns = (stderr: string): number => { + const matches = stderr.match(testCompletedRE); + return matches ? matches.length : 0; + }; + + // First run + await testRun.waitUntil(({stderr}) => numberOfTestRuns(stderr) === 1); + + // Should re-run the test + const modulePath = path.join(DIR, 'foo.js'); + const stat = fs.lstatSync(modulePath); + fs.utimesSync(modulePath, stat.atime, stat.mtime); + await testRun.waitUntil(({stderr}) => numberOfTestRuns(stderr) === 2); + + // Should NOT re-run the test + const fakeATime = 1541723621; + fs.utimesSync(modulePath, fakeATime, stat.mtime); + await sleep(3000); + expect(numberOfTestRuns(testRun.getCurrentOutput().stderr)).toBe(2); + + // Should re-run the test + fs.writeFileSync(modulePath, 'module.exports = 1;', {encoding: 'utf-8'}); + await testRun.waitUntil(({stderr}) => numberOfTestRuns(stderr) === 3); +});