66 lines
1.9 KiB
JavaScript
66 lines
1.9 KiB
JavaScript
// jest-dom adds custom jest matchers for asserting on DOM nodes.
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// allows you to do things like:
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// expect(element).toHaveTextContent(/react/i)
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// learn more: https://github.com/testing-library/jest-dom
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import '@testing-library/jest-dom/extend-expect';
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import {configure} from 'enzyme';
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import Adapter from 'enzyme-adapter-react-16';
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import GlobalInfos from './utils/GlobalInfos';
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configure({adapter: new Adapter()});
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/**
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* prepares fetch api for a virtual test call
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* @param response the response fetch should give you back
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* @returns {jest.Mock<any, any>} a jest mock function simulating a fetch
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*/
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global.prepareFetchApi = (response) => {
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const mockJsonPromise = Promise.resolve(response);
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const mockFetchPromise = Promise.resolve({
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json: () => mockJsonPromise,
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text: () => mockJsonPromise
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});
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return (jest.fn().mockImplementation(() => mockFetchPromise));
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};
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/**
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* prepares a failing virtual fetch api call
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* @returns {jest.Mock<any, any>} a jest moch function simulating a failing fetch call
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*/
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global.prepareFailingFetchApi = () => {
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const mockFetchPromise = Promise.reject('myreason');
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return (jest.fn().mockImplementation(() => mockFetchPromise));
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};
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/**
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* prepares a viewbinding instance
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* @param func a mock function to be called
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*/
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global.prepareViewBinding = (func) => {
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GlobalInfos.getViewBinding = () => {
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return {
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changeRootElement: func,
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returnToLastElement: func
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};
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};
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};
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global.callAPIMock = (resonse) => {
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const helpers = require('./utils/Api');
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helpers.callAPI = jest.fn().mockImplementation((_, __, func1) => {func1(resonse);});
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};
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// code to run before each test
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global.beforeEach(() => {
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// empty fetch response implementation for each test
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global.fetch = prepareFetchApi({});
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// todo with callAPIMock
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});
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global.afterEach(() => {
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// clear all mocks after each test
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jest.resetAllMocks();
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});
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