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Choose E2E or Angular component testing
Pick the mode based on the behavior you need to verify. E2E tests drive the application through a browser against a served or deployed app. Component tests mount Angular components using Cypress’s component-testing support; they can cover rendering and component behavior without exercising an entire user journey through the running application.
| Question | E2E | Angular component testing |
|---|---|---|
| What is tested? | The running application and user-visible flows | An Angular component or library component |
| Setup generator | @nx/cypress:configuration |
@nx/angular:cypress-component-configuration |
| Server/build relationship | Needs a development server target or a configured URL | Needs an eligible Angular build target; Cypress runs its component dev server |
| Typical Nx task | e2e |
component-test |
You can configure both modes in one workspace if you need both kinds of coverage. Nx documents them as distinct targets with different server behavior; configuring one does not configure the other.
Install the Nx Cypress plugin
-
From the workspace root, run
nx add @nx/cypress. Nx’s add command aligns the plugin with the workspace’s Nx version.Recommended Free Tools
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Check the workspace’s existing Nx and Cypress package constraints before changing dependencies. Nx’s rolling Cypress introduction, retrieved October 3, 2026, lists supported Cypress versions as
>= 13 < 16and says generators install the latest supported versions when scaffolding projects. Confirm the currently applicable range against your installed Nx version and package manager lockfile before upgrading.
Configure E2E tests for an existing Angular app
Use the Cypress configuration generator for the existing app. Replace your-app-name with the project name in the Nx workspace:
nx g @nx/cypress:configuration --project=your-app-name
The generator configures that project; it does not create a separate E2E project. If your test setup should use a URL rather than having the Cypress target start the app, pass a base URL:
nx g @nx/cypress:configuration --project=your-app-name --baseUrl=http://localhost:4200
Use the port and URL that actually serve the app version under test. Cypress needs a base URL when neither a base URL nor a dev server target is configured. For an ordinary local run, the generated E2E target commonly starts the app through its devServerTarget; for CI, a static-serving target may be appropriate for the project’s build and deployment arrangement.
Run the E2E target
After configuration, run the generated target, commonly:
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nx e2e your-app-name
The executor configuration uses @nx/cypress:cypress, a Cypress config file, testingType: "e2e", and the app’s server target when Nx should launch it. Inspect the generated project configuration rather than assuming every workspace has identical target names or server settings.
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Configure Angular component testing
For component tests, run the Angular generator against the Angular app or library project that contains the component:
nx g @nx/angular:cypress-component-configuration --project=my-angular-project
The generator adds Cypress component-test files and an Nx-ready Cypress configuration. It can also create starter tests for existing components with --generate-tests:
nx g @nx/angular:cypress-component-configuration --project=my-angular-project --generate-tests
Generated component test files use the .cy.ts suffix and are expected beside the component, according to Nx’s Angular generator reference.
Check the build target
Nx may infer a build target from project-graph usage. If it cannot determine the right one, supply it explicitly:
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nx g @nx/angular:cypress-component-configuration --project=my-angular-project --build-target=my-angular-app:build
The target provides project/build context, including relevant assets, scripts, and styles. Nx’s Angular generator reference says the build target should use @nx/angular:webpack-browser or @angular-devkit/build-angular:browser. For a library component, the suitable target may belong to an application that consumes the library. Confirm the target in your workspace rather than copying the example literally.
Keep component serving separate
The component target should set skipServe: true. Cypress provides the component dev server, so Nx should not try to run the app’s build target as an application server. Nx still uses the build target to prepare the component configuration. The Angular component configuration generator sets this option automatically.
Run component tests
Run the component-test target through Nx, commonly:
nx component-test my-angular-project
As with E2E, verify the actual target name and options generated for your workspace.
See which Cypress targets Nx recognizes
The @nx/cypress/plugin can infer tasks from Cypress configuration files named cypress.config.js, cypress.config.ts, cypress.config.mjs, or cypress.config.cjs when the directory also contains a package.json or project.json. Documented default names include e2e, component-test, and open-cypress; the CI target is named e2e-ci. These are defaults, not guarantees: plugin options in nx.json can change target names.
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nx show project your-app-name --web
Use that output or Nx Console to check inferred targets and configuration before troubleshooting a missing task.
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Use caching and CI features with version awareness
Nx documents caching for E2E and component-test tasks, including tracking Cypress screenshot and video outputs. Its plugin can also infer CI tasks that split tests by file when configured. Component-test CI splitting is documented as available since Nx 21.6.1, so check the installed Nx version before relying on it.
For E2E splitting, Nx’s current guidance uses ciWebServerCommand in the Cypress preset configuration. If customizing the preset, preserve its setupNodeEvents behavior. This is an optional CI optimization, not a prerequisite for running a basic E2E or component-test target.
Troubleshoot common setup failures
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Nx cannot find a Cypress target: Confirm the configuration file uses a recognized name and that its directory also has a
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E2E tests cannot reach the app: Check that the configured
devServerTargetstarts the intended app, or setbaseUrlto a reachable served or deployed URL. A URL pointing to the wrong port or app version will produce misleading failures. -
Cypress reports that no base URL or server is configured: Configure a development server target or provide a base URL. Cypress requires one of these for E2E execution.
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The Angular component generator cannot infer a build target: Pass
--build-target=project:targetexplicitly and verify that target uses one of the Angular browser builders Nx documents for this generator. -
Component tests fail because serving is misconfigured: Check that the component target has
skipServe: true. Cypress owns the component dev server; Nx should not start the application server for this target.Do these 3 things before closing this tab:
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A documented command or CI option is unavailable: Compare it with the installed Nx/plugin version and the generated configuration. Nx documentation is rolling, and capabilities such as component-test CI splitting are version-specific.
Capture a reference screenshot without setting up browser automation
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For example, using cURL to capture a development page:
curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=http://localhost:4200 -o shot.webpSee the ScreenshotNeo API documentation for request options and response handling. The local app must be reachable from the API service for this URL to work; for a local-only development server, use a URL the service can access.
- Cookie and consent banners are accepted and removed before capture, along with supported newsletter popups and chat widgets.
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Frequently Asked Questions
Can an Nx workspace use both Cypress E2E and component tests?
Yes. Configure the E2E and Angular component-test targets separately for the projects and behaviors you want to cover.
Does Nx create a separate E2E project when I configure an existing app?
No. The E2E configuration generator configures the project named by its --project option.
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