ng-test

Run unit tests

$ ng test

$ ng test [project-name]

$ ng test --no-watch

$ ng test --code-coverage

$ ng test --browsers [ChromeHeadless]

$ ng test --watch=false

ng test [project] [options]

ng test compiles the application and runs unit tests using the configured test runner. By default, Angular CLI uses Karma as the test runner with Jasmine as the testing framework. Tests run in a browser and re-execute automatically when source files change.
The command watches for file changes by default, providing a continuous testing workflow during development.

project

The project to run unit tests for. Defaults to the default project.

Generate a code coverage report in the coverage/ directory.

Re-run tests when files change (default: true).

Override browsers to launch for testing (e.g., ChromeHeadless).

Target build configuration.

Path to Karma configuration file.

Glob pattern of files to include in testing.

Display help information.

Requires a test runner to be configured. Karma is the default but alternatives like Jest can be configured. Browser-based testing requires a browser to be installed. Headless mode is recommended for CI environments. Part of Angular CLI.

ng test has been part of Angular CLI since its initial release, using Karma and Jasmine as the default testing stack. Support for alternative test runners like Jest and Web Test Runner has been explored in later Angular versions.

ng(1), ng-e2e(1), karma(1), jest(1)