93 lines
3.4 KiB
Markdown
93 lines
3.4 KiB
Markdown
# Cypress Plugin
|
|
|
|
|
|
|
|
Cypress is an e2e test runner built for modern web. It has a lot of great features:
|
|
|
|
- Time travel
|
|
- Real time reloads
|
|
- Automatic waiting
|
|
- Spies, stubs, and clocks
|
|
- Network traffic control
|
|
- Screenshots and videos
|
|
|
|
## How to Use Cypress
|
|
|
|
### Generating Applications
|
|
|
|
By default, when creating a new frontend application, Nx will use Cypress to create the e2e tests project.
|
|
|
|
```bash
|
|
nx g @nrwl/web:app frontend
|
|
```
|
|
|
|
```treeview
|
|
<workspace name>/
|
|
├── apps/
|
|
│ ├── frontend/
|
|
│ └── frontend-e2e/
|
|
│ ├── src/
|
|
│ │ ├── fixtures/
|
|
│ │ │ └── example.json
|
|
│ │ ├── integration/
|
|
│ │ │ └── app.spec.ts
|
|
│ │ ├── plugins/
|
|
│ │ │ └── index.ts
|
|
│ │ └── support/
|
|
│ │ ├── app.po.ts
|
|
│ │ ├── commands.ts
|
|
│ │ └── index.ts
|
|
│ ├── cypress.json
|
|
│ ├── tsconfig.e2e.json
|
|
│ └── tsconfig.json
|
|
├── libs/
|
|
├── tools/
|
|
├── nx.json
|
|
├── package.json
|
|
├── README.md
|
|
├── workspace.json
|
|
└── tsconfig.json
|
|
```
|
|
|
|
### Testing Applications
|
|
|
|
Simply run `nx e2e frontend-e2e` to execute e2e tests with Cypress.
|
|
|
|
By default, Cypress will run in “headed” mode (you will see the tests executing in a new browser window). You will have the result of all the tests and errors (if any) in your terminal.
|
|
|
|
Screenshots and videos will be accessible in `dist/apps/frontend/screenshots` and `dist/apps/frontend/videos`.
|
|
|
|
### Watching for Changes
|
|
|
|
With, `ng e2e frontend-e2e --watch` Cypress will start in the application mode.
|
|
|
|
Running Cypress with `--watch` is a great way to enhance dev workflow - you can build up test files with the application running and Cypress will re-run those tests as you enhance and add to the suite.
|
|
|
|
Cypress doesn't currently re-run your tests after changes are made to application code when it runs in “headed” mode. There is an [open feature request](https://github.com/nrwl/nx/issues/870) to add this behaviour.
|
|
|
|
### Using Cypress in the Headless Mode
|
|
|
|
If you want to run the Cypress tests in headless mode (e.g., on CI), you can do so by passing `--headless`. You will see all the test results live in the terminal. Videos and screenshots will be available for debugging.
|
|
|
|
In headless mode your tests **will** be re-run every time you make a change to your application code.
|
|
|
|
### Testing Against Prod Build
|
|
|
|
You can run your e2e test against a production build like this: `nx e2e frontend-e2e --prod`.
|
|
|
|
## Configuration
|
|
|
|
### Specifying a Custom Url to Test
|
|
|
|
The `baseUrl` property provides you the ability to test an application hosted on a specific domain.
|
|
|
|
```bash
|
|
nx e2e frontend-e2e --baseUrl=https://frontend.com
|
|
```
|
|
|
|
> If no `baseUrl` and no `devServerTarget` are provided, Cypress will expect to have the `baseUrl` property in the `cypress.json` file, or will error.
|
|
|
|
### Using cypress.json
|
|
|
|
If you need to fine tune your Cypress setup, you can do so by modifying `cypress.json` in the e2e project. For instance, you can easily add your `projectId` to save all the screenshots and videos into your Cypress dashboard. The complete configuration is documented on [the official website](https://docs.cypress.io/guides/references/configuration.html#Options).
|