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Storybookを書くだけでリグレッションテストが 実行される世界へようこそ

kubotak
October 20, 2023

Storybookを書くだけでリグレッションテストが 実行される世界へようこそ

Shizuoka.js #7

kubotak

October 20, 2023
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  1. Copyright© M&A ・・・ import { describe, expect, it } from

    'vitest' import { render } from '@testing-library/svelte' import Component from './Component.svelte' describe('ίϯϙʔωϯτͷදࣔςετ', () => { it('Props௨Γʹίϯϙʔωϯτ͕දࣔ͞ΕΔ͜ͱ', () => { const { getAllByText } = render(Component, { props: { text: '͜Ε͸ςετͰ͢' } }) expect(getAllByText(/͜Ε͸ςετͰ͢/)); }) })
  2. Copyright© M&A ・・・ import { describe, expect, it } from

    'vitest' import { render } from '@testing-library/svelte' import Component from './Component.svelte' describe('ίϯϙʔωϯτͷදࣔςετ', () => { it('Props௨Γʹίϯϙʔωϯτ͕දࣔ͞ΕΔ͜ͱ', () => { const { getAllByText } = render(Component, { props: { text: '͜Ε͸ςετͰ͢' } }) expect(getAllByText(/͜Ε͸ςετͰ͢/)); }) }) ・・・ 文
  3. Copyright© M&A ・・・ import { describe, expect, it } from

    'vitest' import { render } from '@testing-library/svelte' import Component from './Component.svelte' describe('ίϯϙʔωϯτͷදࣔςετ', () => { it('Props௨Γʹίϯϙʔωϯτ͕දࣔ͞ΕΔ͜ͱ', () => { const { getAllByText } = render(Component, { props: { text: '͜Ε͸ςετͰ͢' } }) expect(getAllByText(/͜Ε͸ςετͰ͢/)); }) }) ・・・ 文 文 示 ⾒ 文
  4. Copyright© M&A ・・・ import { describe, expect, it } from

    'vitest' import { render } from '@testing-library/svelte' import Component from './Component.svelte' describe('ίϯϙʔωϯτͷදࣔςετ', () => { it('Props௨Γʹίϯϙʔωϯτ͕දࣔ͞ΕΔ͜ͱ', () => { const { getAllByText } = render(Component, { props: { text: '͜Ε͸ςετͰ͢' } }) expect(getAllByText(/͜Ε͸ςετͰ͢/)); }) }) ・・・ 文 文 示 ⾒ 文 CSS
  5. Copyright© M&A ・・・ import { describe, expect, it } from

    'vitest' import { render } from '@testing-library/svelte' import Component from './Component.svelte' describe('ίϯϙʔωϯτͷදࣔςετ', () => { it('Props௨Γʹίϯϙʔωϯτ͕දࣔ͞ΕΔ͜ͱ', () => { const { getAllByText } = render(Component, { props: { text: '͜Ε͸ςετͰ͢' } }) expect(getAllByText(/͜Ε͸ςετͰ͢/)); }) }) ・・・ 文 文 示 ⾒ 文 CSS DOM ・・・
  6. Copyright© M&A ・・・ import { describe, expect, it } from

    'vitest' import { render } from '@testing-library/svelte' import Component from './Component.svelte' describe('ίϯϙʔωϯτͷදࣔςετ', () => { it('Props௨Γʹίϯϙʔωϯτ͕දࣔ͞ΕΔ͜ͱ', () => { const { getAllByText } = render(Component, { props: { text: '͜Ε͸ςετͰ͢' } }) expect(getAllByText(/͜Ε͸ςετͰ͢/)); }) }) ・・・ 文 文 示 ⾒ 文 CSS DOM ・・・ 手
  7. Copyright© M&A Storybook SaaS chromatic https://www.chromatic.com Storybook UI Storybook UI

    行 Chrome/Firefox/Safari/Edge Lost Pixel https://lost-pixel.com Storybook, Ladle, Next.js CI GitHub Actions GitHub Action Platform OSS
  8. Copyright© M&A Storybook Playwright Storybook storybook-static/stories.json 力 { "v": 3,

    "stories": { "parent-a--defailt": { "id": "parent-a--defailt", "name": "Default", "title": "Parent/A", "importPath": "./src/lib/components/Parent/A.stories.ts", "tags": [], "kind": "Parent/A", "storiy": "Default", "parameters": { "__id": "parent-a--defailt", "fileName": "src/lib/components/Parent/A.stories.ts" } }, } }
  9. Copyright© M&A Storybook Playwright Storybook storybook-static/stories.json 力 { "v": 3,

    "stories": { "parent-a--defailt": { "id": "parent-a--defailt", "name": "Default", "title": "Parent/A", "importPath": "./src/lib/components/Parent/A.stories.ts", "tags": [], "kind": "Parent/A", "storiy": "Default", "parameters": { "__id": "parent-a--defailt", "fileName": "src/lib/components/Parent/A.stories.ts" } }, } } iframe.html?id={id} Story HTML 示
  10. Copyright© M&A Storybook Playwright storybook-static/stories.json id 用 Playwright test(`snapshot test

    ${story.title}: ${story.name}`, async ({ page }) => { await page.goto(`http://localhost:8080/iframe.html?id=${story.id}`, { waitUntil: 'networkidle', timeout: 1000 * 10 }) await expect(page).toHaveScreenshot([story.title, `${story.id}.png`], { animations: 'disabled', timeout: 1000 * 10, threshold: 0.2 }) })
  11. Copyright© M&A Storybook Playwright storybook-static/stories.json id 用 Playwright test(`snapshot test

    ${story.title}: ${story.name}`, async ({ page }) => { await page.goto(`http://localhost:8080/iframe.html?id=${story.id}`, { waitUntil: 'networkidle', timeout: 1000 * 10 }) await expect(page).toHaveScreenshot([story.title, `${story.id}.png`], { animations: 'disabled', timeout: 1000 * 10, threshold: 0.2 }) }) iframe.html?id={id}
  12. Copyright© M&A Storybook Playwright storybook-static/stories.json id 用 Playwright test(`snapshot test

    ${story.title}: ${story.name}`, async ({ page }) => { await page.goto(`http://localhost:8080/iframe.html?id=${story.id}`, { waitUntil: 'networkidle', timeout: 1000 * 10 }) await expect(page).toHaveScreenshot([story.title, `${story.id}.png`], { animations: 'disabled', timeout: 1000 * 10, threshold: 0.2 }) }) 比
  13. Copyright© M&A S 3 main 行 Amazon S 3 CI

    行 比 main S 3 行 行 --update-snapshots 行
  14. Copyright© M&A Git { "modules": [ ... { "id": "./src/lib/components/Child/A.svelte",

    "name": "./src/lib/components/Child/A.svelte", "reasons": [ { "moduleName": "./src/lib/components/Child/A.stories.ts" }, { "moduleName": "./src/lib/components/Parent/A.svelte" } ] }, ... ] }
  15. Copyright© M&A Git { "modules": [ ... { "id": "./src/lib/components/Child/A.svelte",

    "name": "./src/lib/components/Child/A.svelte", "reasons": [ { "moduleName": "./src/lib/components/Child/A.stories.ts" }, { "moduleName": "./src/lib/components/Parent/A.svelte" } ] }, ... ] }
  16. Copyright© M&A Git const diffSummary = await simpleGit().diffSummary([targetBranch, 'origin/main']) const

    storybookDir = resolve(__dirname, '..', 'storybook-static') const statsJson: StatsIndex = JSON.parse( readFileSync(resolve(storybookDir, 'preview-stats.json')).toString() ) const storiesJson: StoryIndex = JSON.parse( readFileSync(resolve(storybookDir, 'stories.json')).toString() )
  17. Copyright© M&A Git const diffSummary = await simpleGit().diffSummary([targetBranch, 'origin/main']) const

    storybookDir = resolve(__dirname, '..', 'storybook-static') const statsJson: StatsIndex = JSON.parse( readFileSync(resolve(storybookDir, 'preview-stats.json')).toString() ) const storiesJson: StoryIndex = JSON.parse( readFileSync(resolve(storybookDir, 'stories.json')).toString() ) CI 行 git branch
  18. Copyright© M&A Git const diffSummary = await simpleGit().diffSummary([targetBranch, 'origin/main']) const

    storybookDir = resolve(__dirname, '..', 'storybook-static') const statsJson: StatsIndex = JSON.parse( readFileSync(resolve(storybookDir, 'preview-stats.json')).toString() ) const storiesJson: StoryIndex = JSON.parse( readFileSync(resolve(storybookDir, 'stories.json')).toString() ) main
  19. Copyright© M&A Git const getUpdatedStories = (): StoryIndex => {

    const isUpdate = process.env.UPDATE_SNAPSHOT === 'all' // NOTE: εφοϓγϣοτΛߋ৽͢Δ৔߹ɺશͯͷεΫϦʔϯγϣοτΛߋ৽͢Δ if (isUpdate) { return storiesJson } // NOTE: ࠩ෼͕ଘࡏ͠ͳ͍৔߹ɺεΫϦʔϯγϣοτςετΛ࣮ߦ͠ͳ͍ if (diffSummary.files.length === 0) return { stories: {} } // NOTE: ର৅ͷϑΝΠϧ͕ࠩ෼ͱͯ͠ଘࡏ͢Δ৔߹ɺશͯͷεΫϦʔϯγϣοτΛߋ৽͢Δ const surveillanceList = [ 'package.json', 'package-lock.json', 'playwright.config.ts', '.storybook/main.ts', '.storybook/preview.ts', '.storybook/preview-head.html' ] const updatedStories = diffSummary.files.filter((file) => { return surveillanceList.some((surveillance) => { return file.file.includes(surveillance) }) }) // NOTE: શ݅νΣοΫ͢Δඞཁ͕͋Δ͔ if (updatedStories.length !== 0) return storiesJson ... }
  20. Copyright© M&A Git const getUpdatedStories = (): StoryIndex => {

    const isUpdate = process.env.UPDATE_SNAPSHOT === 'all' // NOTE: εφοϓγϣοτΛߋ৽͢Δ৔߹ɺશͯͷεΫϦʔϯγϣοτΛߋ৽͢Δ if (isUpdate) { return storiesJson } // NOTE: ࠩ෼͕ଘࡏ͠ͳ͍৔߹ɺεΫϦʔϯγϣοτςετΛ࣮ߦ͠ͳ͍ if (diffSummary.files.length === 0) return { stories: {} } // NOTE: ର৅ͷϑΝΠϧ͕ࠩ෼ͱͯ͠ଘࡏ͢Δ৔߹ɺશͯͷεΫϦʔϯγϣοτΛߋ৽͢Δ const surveillanceList = [ 'package.json', 'package-lock.json', 'playwright.config.ts', '.storybook/main.ts', '.storybook/preview.ts', '.storybook/preview-head.html' ] const updatedStories = diffSummary.files.filter((file) => { return surveillanceList.some((surveillance) => { return file.file.includes(surveillance) }) }) // NOTE: શ݅νΣοΫ͢Δඞཁ͕͋Δ͔ if (updatedStories.length !== 0) return storiesJson ... } stories.json
  21. Copyright© M&A Git const getUpdatedStories = (): StoryIndex => {

    const isUpdate = process.env.UPDATE_SNAPSHOT === 'all' // NOTE: εφοϓγϣοτΛߋ৽͢Δ৔߹ɺશͯͷεΫϦʔϯγϣοτΛߋ৽͢Δ if (isUpdate) { return storiesJson } // NOTE: ࠩ෼͕ଘࡏ͠ͳ͍৔߹ɺεΫϦʔϯγϣοτςετΛ࣮ߦ͠ͳ͍ if (diffSummary.files.length === 0) return { stories: {} } // NOTE: ର৅ͷϑΝΠϧ͕ࠩ෼ͱͯ͠ଘࡏ͢Δ৔߹ɺશͯͷεΫϦʔϯγϣοτΛߋ৽͢Δ const surveillanceList = [ 'package.json', 'package-lock.json', 'playwright.config.ts', '.storybook/main.ts', '.storybook/preview.ts', '.storybook/preview-head.html' ] const updatedStories = diffSummary.files.filter((file) => { return surveillanceList.some((surveillance) => { return file.file.includes(surveillance) }) }) // NOTE: શ݅νΣοΫ͢Δඞཁ͕͋Δ͔ if (updatedStories.length !== 0) return storiesJson ... } ⾒ 行
  22. Copyright© M&A Git const getUpdatedStories = (): StoryIndex => {

    const isUpdate = process.env.UPDATE_SNAPSHOT === 'all' // NOTE: εφοϓγϣοτΛߋ৽͢Δ৔߹ɺશͯͷεΫϦʔϯγϣοτΛߋ৽͢Δ if (isUpdate) { return storiesJson } // NOTE: ࠩ෼͕ଘࡏ͠ͳ͍৔߹ɺεΫϦʔϯγϣοτςετΛ࣮ߦ͠ͳ͍ if (diffSummary.files.length === 0) return { stories: {} } // NOTE: ର৅ͷϑΝΠϧ͕ࠩ෼ͱͯ͠ଘࡏ͢Δ৔߹ɺશͯͷεΫϦʔϯγϣοτΛߋ৽͢Δ const surveillanceList = [ 'package.json', 'package-lock.json', 'playwright.config.ts', '.storybook/main.ts', '.storybook/preview.ts', '.storybook/preview-head.html' ] const updatedStories = diffSummary.files.filter((file) => { return surveillanceList.some((surveillance) => { return file.file.includes(surveillance) }) }) // NOTE: શ݅νΣοΫ͢Δඞཁ͕͋Δ͔ if (updatedStories.length !== 0) return storiesJson ... } ⾒ stories.json
  23. Copyright© M&A Git export const extractDependenciesRecursively = (path: string, statsJson:

    StatsIndex): string[] => { const relatedComponent = new Set<string>() const explore = (name: string) => { // ͢Ͱʹ୳ࡧࡁΈͷ৔߹͸ऴྃ if (relatedComponent.has(name)) return // .svelteϑΝΠϧͷΈΛநग़ if (!name.endsWith('.svelte')) return // ґଘ͍ͯ͠ΔϑΝΠϧ͕ଘࡏ͢Δ͔ const target = Object.values(statsJson.modules).find((s) => s.id === name) if (target) { relatedComponent.add(name) target.reasons.forEach((r) => explore(r.moduleName)) } } explore(path) return Array.from<string>(relatedComponent) } export const getStories = ( pathList: string[], statsJson: StatsIndex, storiesJson: StoryIndex ): StoryIndex => { const updatedStoriesJson: StoryIndex = { stories: {} } pathList.forEach((path) => { // ର৅ͷstatsΛऔಘ const stats = statsJson.modules.find((component) => component.id === path) if (!stats) return // .stories.tsΛऔಘ const storyPath = stats.reasons.find((r) => r.moduleName.includes('.stories.ts')) if (!storyPath) return // ର৅ͷstoriesΛऔಘ const storyObj = Object.values(storiesJson.stories).find( (s) => s.importPath === storyPath.moduleName ) if (storyObj) updatedStoriesJson.stories[storyObj.id] = storyObj }) return updatedStoriesJson }
  24. Copyright© M&A Git export const extractDependenciesRecursively = (path: string, statsJson:

    StatsIndex): string[] => { const relatedComponent = new Set<string>() const explore = (name: string) => { // ͢Ͱʹ୳ࡧࡁΈͷ৔߹͸ऴྃ if (relatedComponent.has(name)) return // .svelteϑΝΠϧͷΈΛநग़ if (!name.endsWith('.svelte')) return // ґଘ͍ͯ͠ΔϑΝΠϧ͕ଘࡏ͢Δ͔ const target = Object.values(statsJson.modules).find((s) => s.id === name) if (target) { relatedComponent.add(name) target.reasons.forEach((r) => explore(r.moduleName)) } } explore(path) return Array.from<string>(relatedComponent) } export const getStories = ( pathList: string[], statsJson: StatsIndex, storiesJson: StoryIndex ): StoryIndex => { const updatedStoriesJson: StoryIndex = { stories: {} } pathList.forEach((path) => { // ର৅ͷstatsΛऔಘ const stats = statsJson.modules.find((component) => component.id === path) if (!stats) return // .stories.tsΛऔಘ const storyPath = stats.reasons.find((r) => r.moduleName.includes('.stories.ts')) if (!storyPath) return // ର৅ͷstoriesΛऔಘ const storyObj = Object.values(storiesJson.stories).find( (s) => s.importPath === storyPath.moduleName ) if (storyObj) updatedStoriesJson.stories[storyObj.id] = storyObj }) return updatedStoriesJson } storybook-static/preview-stats.json 用
  25. Copyright© M&A Git export const extractDependenciesRecursively = (path: string, statsJson:

    StatsIndex): string[] => { const relatedComponent = new Set<string>() const explore = (name: string) => { // ͢Ͱʹ୳ࡧࡁΈͷ৔߹͸ऴྃ if (relatedComponent.has(name)) return // .svelteϑΝΠϧͷΈΛநग़ if (!name.endsWith('.svelte')) return // ґଘ͍ͯ͠ΔϑΝΠϧ͕ଘࡏ͢Δ͔ const target = Object.values(statsJson.modules).find((s) => s.id === name) if (target) { relatedComponent.add(name) target.reasons.forEach((r) => explore(r.moduleName)) } } explore(path) return Array.from<string>(relatedComponent) } export const getStories = ( pathList: string[], statsJson: StatsIndex, storiesJson: StoryIndex ): StoryIndex => { const updatedStoriesJson: StoryIndex = { stories: {} } pathList.forEach((path) => { // ର৅ͷstatsΛऔಘ const stats = statsJson.modules.find((component) => component.id === path) if (!stats) return // .stories.tsΛऔಘ const storyPath = stats.reasons.find((r) => r.moduleName.includes('.stories.ts')) if (!storyPath) return // ର৅ͷstoriesΛऔಘ const storyObj = Object.values(storiesJson.stories).find( (s) => s.importPath === storyPath.moduleName ) if (storyObj) updatedStoriesJson.stories[storyObj.id] = storyObj }) return updatedStoriesJson } .stories.ts Storybook
  26. Copyright© M&A projects: [ { name: 'chromium', use: devices['Desktop Chrome']

    }, { name: 'firefox', use: devices['Desktop Firefox'] }, { name: 'webkit', use: devices['Desktop Safari'] }, { name: 'Mobile Safari', use: devices['iPhone 14 Pro'] } ] playwright.config.ts 行 行