react-native/local-cli/__tests__/fs-mock-test.js
Mike Grabowski 1f498010e8 Remove mockFs dependency
Summary:
This is first PR from the series I am going to be sending as a result of fixing 0.50-stable test suite. This one removes `mockFS` dependency that has been causing failures on Node 6.x container.

Here's build before this change: https://circleci.com/gh/facebook/react-native/22529
Here's build after this change: https://circleci.com/gh/facebook/react-native/22538 (green)

Note that the CI may be still red as there are other PRs to be addressed. You can see this in the wild on 0.50.
Closes https://github.com/facebook/react-native/pull/16301

Differential Revision: D6031352

Pulled By: hramos

fbshipit-source-id: 5c97ae6c87864c094e29e5d8987521071c67f5bd
2017-10-11 15:11:28 -07:00

59 lines
1.8 KiB
JavaScript

/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
* @emails oncall+javascript_foundation
* @flow
* @format
*/
'use strict';
/* eslint-disable no-unclear-flowtypes */
declare var jest: any;
declare var describe: any;
declare var it: any;
jest.mock('fs');
const fs = require('fs');
describe('fs mock', () => {
describe('writeFileSync()', () => {
it('stores content correctly', () => {
fs.writeFileSync('/test', 'foobar', 'utf8');
const content = fs.readFileSync('/test', 'utf8');
/* $FlowFixMe(>=0.56.0 site=react_native_oss) This comment suppresses an
* error found when Flow v0.56 was deployed. To see the error delete this
* comment and run Flow. */
expect(content).toEqual('foobar');
});
it('fails on missing path', () => {
/* $FlowFixMe(>=0.56.0 site=react_native_oss) This comment suppresses an
* error found when Flow v0.56 was deployed. To see the error delete this
* comment and run Flow. */
expect(() =>
fs.writeFileSync('/dir/test', 'foobar', 'utf8'),
).toThrowError('ENOENT: no such file or directory');
});
});
describe('mkdirSync()', () => {
it('creates folders that we can write files in', () => {
fs.mkdirSync('/dir', 0o777);
fs.writeFileSync('/dir/test', 'foobar', 'utf8');
const content = fs.readFileSync('/dir/test', 'utf8');
/* $FlowFixMe(>=0.56.0 site=react_native_oss) This comment suppresses an
* error found when Flow v0.56 was deployed. To see the error delete this
* comment and run Flow. */
expect(content).toEqual('foobar');
});
});
});