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116 lines
3.2 KiB
Markdown
116 lines
3.2 KiB
Markdown
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# Component testing with Playwright and Vue3
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## Recommended IDE Setup
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[VSCode](https://code.visualstudio.com/) + [Volar](https://marketplace.visualstudio.com/items?itemName=johnsoncodehk.volar) (and disable Vetur) + [TypeScript Vue Plugin (Volar)](https://marketplace.visualstudio.com/items?itemName=johnsoncodehk.vscode-typescript-vue-plugin) + [Playwright Test for VSCode](https://marketplace.visualstudio.com/items?itemName=ms-playwright.playwright).
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## Project Setup
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```sh
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npm i
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```
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### Compile and Hot-Reload for Development
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```sh
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npm run dev
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```
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### Test project
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Run tests from your VS Code, or execute
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```sh
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npm run test
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```
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## How to add component tests using Playwright
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- npm init vue@latest was used to create a default project.
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```sh
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npm init vue@latest
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```
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- Install Playwright Text w/ component testing as dev dependencies.
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```sh
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npm i --save-dev @playwright/test @playwright/experimental-ct-vue
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```
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- `tests.js` file was added that registers all the components to be tested.
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```js
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import register from '@playwright/experimental-ct-vue/register'
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import Counter from './src/components/Counter.vue'
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import DocumentationIcon from './src/components/icons/IconDocumentation.vue'
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import HelloWorld from './src/components/HelloWorld.vue'
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import NamedSlots from './src/components/NamedSlots.vue'
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import TheWelcome from './src/components/TheWelcome.vue'
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import WelcomeItem from './src/components/WelcomeItem.vue'
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register({
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Counter,
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DocumentationIcon,
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HelloWorld,
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NamedSlots,
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TheWelcome,
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WelcomeItem,
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})
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```
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- `tests.html` file was added that defines theming for the components and references `tests.js`.
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```html
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<html>
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<head>
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<style>@import '/src/assets/base.css';</style>
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</head>
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<body>
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<div id="app"></div>
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<script type="module" src="/tests.js"></script>
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</body>
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</html>
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```
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- `playwright.config.ts` was added that executes `npm run dev` before running tests if it is not already running.
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```js
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import { PlaywrightTestConfig, devices } from '@playwright/test';
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const config: PlaywrightTestConfig = {
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testDir: 'src',
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forbidOnly: !!process.env.CI,
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retries: process.env.CI ? 2 : 0,
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reporter: process.env.CI ? [
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['html', { open: 'never' }],
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] : [
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['html', { open: 'on-failure' }]
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],
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webServer: {
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url: 'http://localhost:3000/tests.html',
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command: 'npm run dev',
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reuseExistingServer: !process.env.CI,
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},
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use: {
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baseURL: 'http://localhost:3000/tests.html',
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trace: 'on-first-retry',
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},
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projects: [
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{
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name: 'chromium',
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use: { ...devices['Desktop Chrome'] },
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},
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{
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name: 'firefox',
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use: { ...devices['Desktop Firefox'] },
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},
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{
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name: 'webkit',
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use: { ...devices['Desktop Safari'] },
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},
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],
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};
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export default config;
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```
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- A bunch of `.spec.ts` and `.spec.tsx` files were added to `src` that demonstrate Vue3 component testing with and without the use of JSX syntax.
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