Created
April 9, 2018 15:30
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Reproduction of an issue with a test that tests a debounced async Vue component function
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| // See https://stackoverflow.com/questions/47907000/testing-debounced-asynchronous-request-with-moxios-and-faketimers | |
| import Vue from 'vue' | |
| import { mount } from '@vue/test-utils' | |
| import axios from 'axios' | |
| import moxios from 'moxios' | |
| import _ from 'lodash' | |
| import expect from 'expect' | |
| import sinon from 'sinon' | |
| let Debounced = Vue.component('Debounced', | |
| { | |
| template: `<div><button @click.prevent="fetch"></button></div>`, | |
| data() { | |
| return { | |
| data: {} | |
| } | |
| }, | |
| methods: { | |
| fetch: _.debounce(async () => { | |
| let data = await axios.post('/test', {param: 'example'}) | |
| this.data = data | |
| }, 100) | |
| } | |
| } | |
| ) | |
| describe.only ('Test axios in debounce()', () => { | |
| let wrapper, clock | |
| beforeEach(() => { | |
| clock = sinon.useFakeTimers() | |
| moxios.install() | |
| wrapper = mount(Debounced) | |
| }) | |
| afterEach(() => { | |
| moxios.uninstall() | |
| clock.restore() | |
| }) | |
| it ('should send off a request when clicked', (done) => { | |
| // Given we set up axios to return something | |
| moxios.stubRequest('/test', { | |
| status: 200, | |
| response: [] | |
| }) | |
| // When the button is clicked | |
| wrapper.find('button').trigger('click') | |
| clock.tick(100) | |
| wrapper.vm.$nextTick(() => { | |
| moxios.wait(() => { | |
| try { | |
| // It should have called axios with the right params | |
| let request = moxios.requests.mostRecent() | |
| expect(JSON.parse(request.config.data)).toEqual({param: 'example'}) | |
| done() | |
| } catch (e) { | |
| done(e) | |
| } | |
| }) | |
| }) | |
| }) | |
| }) |
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