forked from jestjs/jest
/
index.test.js
46 lines (35 loc) · 1.1 KB
/
index.test.js
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/**
* Copyright (c) Facebook, Inc. and its affiliates. 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.
*/
'use strict';
describe('with mock reset', () => {
const myObject = {bar: () => 'bar'};
let barStub;
beforeAll(() => {
barStub = jest.spyOn(myObject, 'bar');
});
test('after mock reset, bar should return to its original value', () => {
barStub.mockReturnValue('POTATO!');
expect(myObject.bar()).toBe('POTATO!');
barStub.mockReset();
// This expect should be successful
expect(myObject.bar()).toBe('bar');
});
});
describe('with reset all mocks', () => {
const myObject = {bar: () => 'bar', foo: () => 'foo'};
let barStub;
beforeAll(() => {
barStub = jest.spyOn(myObject, 'bar');
});
test('after reset all, bar should return to its original value', () => {
barStub.mockReturnValue('POTATO!');
expect(myObject.bar()).toBe('POTATO!');
jest.resetAllMocks();
// This expect should be successful
expect(myObject.bar()).toBe('bar');
});
});