# ng test ## Overview `ng test` compiles the application into an output directory ### Running unit tests ```bash ng test ``` Tests will execute after a build is executed via [Karma](http://karma-runner.github.io/0.13/index.html), and it will automatically watch your files for changes. You can run tests a single time via `--watch=false` or `--single-run`. You can run tests with coverage via `--code-coverage`. The coverage report will be in the `coverage/` directory. ## Options
app

--app (aliases: -a) default value: 1st app

Specifies app name or index to use.

browsers

--browsers

Override which browsers tests are run against.

code-coverage

--code-coverage (aliases: -cc) default value: false

Coverage report will be in the coverage/ directory.

colors

--colors

Enable or disable colors in the output (reporters and logs).

config

--config (aliases: -c)

Use a specific config file. Defaults to the karma config file in `.angular-cli.json`.

environment

--environment (aliases: -e)

Defines the build environment.

log-level

--log-level

Level of logging.

poll

--poll

Enable and define the file watching poll time period (milliseconds).

port

--port

Port where the web server will be listening.

progress

--progress default value: true

Log progress to the console while in progress.

reporters

--reporters

List of reporters to use.

single-run

--single-run (aliases: -sr)

Run tests a single time.

sourcemap

--sourcemap (aliases: -sm, sourcemaps)

Output sourcemaps.

watch

--watch (aliases: -w)

Run build when files change.