56 lines
1.3 KiB
TypeScript
56 lines
1.3 KiB
TypeScript
/**
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* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
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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 {cleanup, createEmptyPackage, writeFiles} from '../Utils';
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import runJest from '../runJest';
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const DIR = path.resolve(tmpdir(), 'isolate-modules.test');
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beforeEach(() => {
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cleanup(DIR);
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createEmptyPackage(DIR);
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});
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afterAll(() => cleanup(DIR));
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test('works with mocks', () => {
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writeFiles(DIR, {
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'config.js': `
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module.exports.getBoolean = function getBoolean(variableName) {
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return false;
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}
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`,
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'read.js': `
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const {getBoolean} = require('./config');
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const value = getBoolean('foo');
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console.log("was " + value);
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`,
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'test.js': `
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jest.mock('./config');
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const config = require('./config');
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test('dummy test', () => {
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const configGetMock = config.getBoolean.mockImplementation(() => {
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return true;
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});
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jest.isolateModules(() => {
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require("./read");
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});
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expect(configGetMock).toBeCalledTimes(1);
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})
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`,
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});
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const {exitCode} = runJest(DIR);
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expect(exitCode).toBe(0);
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});
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