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Javascript 2021-10-03 02:42:02
jest mock mockname
test("mockFn.mockReset", () => { const mockFn = jest.fn().mockImplementation(() => 43); const MockClass = jest.fn(); new MockClass(); expect(mockFn()).toBe(43); expect(mockFn.mock.calls).toHaveLength(1); expect(MockClass.mock... Add solution -
Javascript 2021-09-29 19:38:05
jest mock createobjecturl
global.URL.createObjectURL = jest.fn(); Add solution -
Javascript 2021-09-17 20:40:02
react eznyme fetch api using hooks
//app.js import React from 'react' import FetchData from './FetchData' const fetchUsers = () => fetch('https://jsonplaceholder.typicode.com/users').then((res) => res.json()) function App() { return ( <> <FetchData fetchUsers={... Add solution -
Javascript 2021-09-15 23:56:02
mock createRef jest react functional component
import React, { useRef } from 'react'; import { shallow } from 'enzyme'; import Child2 from './'; jest.mock('react', () => { const originReact = jest.requireActual('react'); const mUseRef = jest.fn(); return { ...originReact, useRef: mUs... Add solution -
Javascript 2021-09-14 08:09:06
vue test utils mapgetter
import { shallowMount, createLocalVue } from '@vue/test-utils' import Vuex from 'vuex' import MyComponent from '../../../src/components/MyComponent' import myModule from '../../../src/store/myModule' const localVue = createLocalVue() localVue.use(Vuex) ... Add solution -
Javascript 2021-09-09 11:31:01
mockimplementation for setstate
import * as React from 'react'; describe('Some message', () => { const setState = jest.fn(); // eslint-disable-next-line @typescript-eslint/no-explicit-any const useStateMock: any = (initState: any) => [initState, setState]; afterE... Add solution -
Javascript 2021-09-07 05:30:01
window.matchMedia is not a function
/*See the official ject work around to mock this out for use in unit test*/ /*matchMedia.js mock file*/ Object.defineProperty(window, 'matchMedia', { writable: true, value: jest.fn().mockImplementation(query => ({ matches: false, media: que... Add solution