Vue Fes Japan 2018 の 1年間単体テストを書き続けた現場から送る Vue Component のテスト https://vuefes.jp/
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࣮ྫ-JGFDZDMFcreated () {this.loadPosts()},methods: {...mapActions(['fetchPosts']),async loadPosts () {this.message = 'ಡΈࠐΈத...'try {await this.fetchPosts()} finally {this.message = ‘'}}},.FUIPEݺͼग़͠
࣮ྫ-JGFDZDMFcreated () {this.loadPosts()},methods: {...mapActions(['fetchPosts']),async loadPosts () {this.message = 'ಡΈࠐΈத...'try {await this.fetchPosts()} finally {this.message = ‘'}}},දࣔมߋ
࣮ྫ-JGFDZDMFcreated () {this.loadPosts()},methods: {...mapActions(['fetchPosts']),async loadPosts () {this.message = 'ಡΈࠐΈத...'try {await this.fetchPosts()} finally {this.message = ‘'}}},"DUJPOEJTQBUDI
ςετྫ-JGFDZDMF// ϩʔΧϧͳVueίϯετϥΫλʹVuexΛΠϯετʔϧconst localVue = createLocalVue()localVue.use(Vuex)beforeEach(() => {// fetchPostsΞΫγϣϯͷಈ࡞֬ೝͷͨΊͷVuexपΓͷઃఆactions = {fetchPosts: sinon.stub() // fetchPostsΞΫγϣϯͷϞοΫ}store = new Vuex.Store({actions})wrapper = mount(Posts, {store, localVue })})͓ܾ·Γ
ςετྫ-JGFDZDMF// ϩʔΧϧͳVueίϯετϥΫλʹVuexΛΠϯετʔϧconst localVue = createLocalVue()localVue.use(Vuex)beforeEach(() => {// fetchPostsΞΫγϣϯͷಈ࡞֬ೝͷͨΊͷVuexपΓͷઃఆactions = {fetchPosts: sinon.stub() // fetchPostsΞΫγϣϯͷϞοΫ}store = new Vuex.Store({actions})wrapper = mount(Posts, {store, localVue })})TUPSFͷϞοΫΛ࡞
ςετྫ-JGFDZDMFit('loadingදࣔ͞ΕΔ͜ͱ', async () => {expect(wrapper.text()).to.contain('ಡΈࠐΈத...')})it('fetchPosts͕dispatch͞ΕΔ͜ͱ', () => {sinon.assert.calledOnce(actions.fetchPosts)})it('dispatchޭ͢Δͱɺloadingද͕ࣔফ͑Δ͜ͱ', async () => {actions.fetchPosts.resolves()await flushPromises()expect(wrapper.text()).not.to.contain('ಡΈࠐΈத...')})
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ςετྫ୯७ͳBTTFSUdescribe('ߘ͕0݅ͷ߹', () => {beforeEach(() => wrapper.setProps({posts: []})it('0݅ͷද͕ࣔ͞Ε͍ͯΔ͜ͱ', () => {expect(wrapper.text()).to.contain('·ͩߘ͋Γ·ͤΜ')})})describe('ߘ͕1݅Ҏ্ͷ߹', () => {const post = {id: 1, title: ‘λΠτϧ’, body: ‘body’}beforeEach(() => wrapper.setProps({posts: [post]})it('ߘͷ༰͕දࣔ͞Ε͍ͯΔ͜ͱ', () => {expect(wrapper.text()).to.contain(post.title)})})
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ݱͷίʔυimport { state, getters, mutations, actions } from ‘@/store'function createStubStore () {const store = new Vuex.Store({state, getters, mutations, actions})sinon.stub(store, 'dispatch').resolves()store.state.posts = [{id: 1, title: 'λΠτϧ1', body: 'ϘσΟ'}]// ࣮ࡍ͜͜ͷstate४උ͕͍ͬͺ͍͋Δreturn store}const emptyPostsStore = createStubStore()emptyPostsStore.state.posts = []storiesOf('Posts', module).add('ۭͷͱ͖', () => ({components: { Posts },template: '',store: emptyPostsStore,}))ຊͷTUPSFΛϕʔεʹEJTQBUDINFUIPEͱTUBUFΛϞοΫԽ͢Δ
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ςετྫXSBQQFS४උ// ϩʔΧϧͳVueίϯετϥΫλʹVuex/VeeValidateΛΠϯετʔϧconst localVue = createLocalVue()localVue.use(Vuex)localVue.use(VeeValidate)beforeEach(() => {// Vue RouterͷϞοΫઃఆ$router = { push: sinon.stub() }// createPostΞΫγϣϯͷಈ࡞֬ೝͷͨΊͷVuexपΓͷઃఆactions = { createPost: sinon.stub() }store = new Vuex.Store({actions})wrapper = mount(NewPost, { mocks: { $router }, store,localVue, sync: false })})TUPSFͷϞοΫΛ࡞NPVOU
ςετྫೖྗͯ͠DMJDLͨ͠ͱ͖describe('ೖྗͯ͠อଘϘλϯΛclickͨ͠ͱ͖', () => {beforeEach(async () => {wrapper.find('#title').setValue('title')wrapper.find('#body').setValue('body')wrapper.find('#create-button').trigger('click')await flushPromises()})it('ೖྗ͞Εͨ༰Ͱaction͕dispatch͞ΕΔ͜ͱ', () => {sinon.assert.calledWithMatch(actions.createPost, {},{ post: { title: 'title', body: 'body' } })})})ೖྗޙʹϘλϯDMJDLͷͱ͖EJTQBUDI͞ΕΔ
ςετྫೖྗͤͣʹDMJDLͨ͠ͱ͖describe('ະೖྗͰอଘϘλϯΛclickͨ͠ͱ͖', () => {beforeEach(async () => {wrapper.find('#create-button').trigger('click')await flushPromises()})it('validationΤϥʔ͕දࣔ͞ΕΔ͜ͱ', () => {expect(wrapper.text()).to.contain('The title field is required.')})it('action͕dispatch͞Εͳ͍͜ͱ', () => {sinon.assert.notCalled(actions.createPost)})}) ະೖྗͰϘλϯDMJDLͷͱ͖WBMJEBUJPOΤϥʔදࣔEJTQBUDI͞Εͳ͍
ςετྫೖྗͤͣʹDMJDLͨ͠ͱ͖describe('ະೖྗͰอଘϘλϯΛclickͨ͠ͱ͖', () => {beforeEach(async () => {wrapper.find('#create-button').trigger('click')await flushPromises()})it('validationΤϥʔ͕දࣔ͞ΕΔ͜ͱ', () => {expect(wrapper.text()).to.contain('The title field is required.')})it('action͕dispatch͞Εͳ͍͜ͱ', () => {sinon.assert.notCalled(actions.createPost)})}) ද͕ࣔมΘͬͨ෦Λ୯७ͳBTTFSUͯ͠Δ
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