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| 1 | +import { Fetch } from '../src/fetch'; |
| 2 | +const link = 'https://api.example.com/data'; |
| 3 | +const contentType = 'application/json; charset=utf-8'; |
| 4 | +const fetchData = { name: 'John', age: 30 }; |
| 5 | + |
| 6 | +describe('fetch', () => { |
| 7 | + describe('constructor', () => { |
| 8 | + beforeAll(() => { |
| 9 | + // Spy on window.fetch method to mock default response object |
| 10 | + spyOn(window, 'fetch').and.returnValue(Promise.resolve({ |
| 11 | + ok: true, |
| 12 | + headers: { get: () => 'application/json' }, |
| 13 | + json: () => Promise.resolve({ message: 'Mock response' }) |
| 14 | + })); |
| 15 | + }); |
| 16 | + |
| 17 | + it('Different input parameters', function (done) { |
| 18 | + // Create a new instance of Fetch class as url as string type |
| 19 | + let fetchObj = new Fetch(link, 'GET'); |
| 20 | + expect(fetchObj.url).toEqual(link); |
| 21 | + expect(fetchObj.type).toEqual('GET'); |
| 22 | + |
| 23 | + // Create a new instance of Fetch class as url as string type & assign type in instance |
| 24 | + fetchObj = new Fetch(link); |
| 25 | + fetchObj.type = 'GET'; |
| 26 | + expect(fetchObj.url).toEqual(link); |
| 27 | + expect(fetchObj.type).toEqual('GET'); |
| 28 | + |
| 29 | + // Create a new instance of Fetch class as url as object type |
| 30 | + fetchObj = new Fetch({ |
| 31 | + 'url': link, |
| 32 | + 'type': 'POST', |
| 33 | + 'contentType': contentType, |
| 34 | + 'data': fetchData |
| 35 | + }); |
| 36 | + fetchObj.send(); |
| 37 | + expect(fetchObj.url).toEqual(link); |
| 38 | + expect(fetchObj.type).toEqual('POST'); |
| 39 | + expect(fetchObj.contentType).toEqual(contentType); |
| 40 | + expect(fetchObj.data).toEqual(fetchData); |
| 41 | + |
| 42 | + // Create a new instance of Fetch class using request object |
| 43 | + let request = new Request(link, { method: 'GET' }); |
| 44 | + fetchObj = new Fetch({'fetchRequest':request}); |
| 45 | + expect(fetchObj.fetchRequest).toEqual(request); |
| 46 | + done(); |
| 47 | + }); |
| 48 | + |
| 49 | + it('beforeSend event', function (done) { |
| 50 | + let doneFn = jasmine.createSpy('beforeSend').and.callFake((e: any) => { |
| 51 | + expect(doneFn).toHaveBeenCalled(); |
| 52 | + e.cancel = true; done(); |
| 53 | + }); |
| 54 | + let fetchObj = new Fetch(link, 'GET'); |
| 55 | + fetchObj.beforeSend = doneFn; |
| 56 | + fetchObj.send(); |
| 57 | + }); |
| 58 | + |
| 59 | + it('onLoad event', function (done) { |
| 60 | + let doneFn = jasmine.createSpy('onLoad').and.callFake(() => { |
| 61 | + expect(doneFn).toHaveBeenCalled(); |
| 62 | + done(); |
| 63 | + }); |
| 64 | + let fetchObj = new Fetch(link, 'GET'); |
| 65 | + fetchObj.onLoad = doneFn; |
| 66 | + fetchObj.send(); |
| 67 | + }); |
| 68 | + |
| 69 | + it('GET method with onSuccess event', function (done) { |
| 70 | + let doneFn = jasmine.createSpy('onSuccess').and.callFake((e: any) => { |
| 71 | + expect(doneFn).toHaveBeenCalled(); |
| 72 | + expect(e.message).toEqual('Mock response'); |
| 73 | + done(); |
| 74 | + }); |
| 75 | + let fetchObj = new Fetch(link, 'GET'); |
| 76 | + fetchObj.onSuccess = doneFn; |
| 77 | + fetchObj.send(); |
| 78 | + }); |
| 79 | + |
| 80 | + it('POST method with onSuccess event', function (done) { |
| 81 | + let doneFn = jasmine.createSpy('onSuccess').and.callFake((e: any) => { |
| 82 | + expect(doneFn).toHaveBeenCalled(); |
| 83 | + expect(e.message).toEqual('Mock response'); |
| 84 | + done(); |
| 85 | + }); |
| 86 | + let fetchObj = new Fetch(link, 'POST', contentType); |
| 87 | + fetchObj.onSuccess = doneFn; |
| 88 | + fetchObj.send(fetchData); |
| 89 | + }); |
| 90 | + }); |
| 91 | + |
| 92 | + it('onFailure event', function (done) { |
| 93 | + spyOn(window, 'fetch').and.returnValue(Promise.resolve({ |
| 94 | + ok: false, |
| 95 | + headers: { get: () => 'application/json' }, |
| 96 | + json: () => Promise.resolve({ message: 'Mock response' }) |
| 97 | + })); |
| 98 | + let doneFn = jasmine.createSpy('onFailure').and.callFake(() => { |
| 99 | + expect(doneFn).toHaveBeenCalled(); |
| 100 | + done(); |
| 101 | + }); |
| 102 | + let fetchObj = new Fetch(link, 'GET'); |
| 103 | + fetchObj.onFailure = doneFn; |
| 104 | + fetchObj.send(); |
| 105 | + }); |
| 106 | +}); |
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