forked from facebook/relay
/
FSMock.js
48 lines (40 loc) · 982 Bytes
/
FSMock.js
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/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @emails oncall+relay
* @flow strict-local
* @format
*/
// flowlint ambiguous-object-type:error
'use strict';
const actualDeletedFiles = [];
const expectedDeletedFiles = [];
function install() {
beforeEach(beforeEachCallback);
afterEach(afterEachCallback);
}
function beforeEachCallback() {
jest.mock('fs', () => ({
unlinkSync(name: string): void {
actualDeletedFiles.push(name);
},
existsSync(name: string): boolean {
return true;
},
}));
actualDeletedFiles.length = 0;
expectedDeletedFiles.length = 0;
}
function afterEachCallback() {
expect(actualDeletedFiles).toEqual(expectedDeletedFiles);
}
function expectDeletion(filepath: string): void {
expectedDeletedFiles.push(filepath);
}
module.exports = {
install,
expectDeletion,
};