All commands listed below should be run from the root of the repository in your local environment.

1. Install dependencies using Composer

   $ composer install
   

2. Install WordPress and the WP Unit Test lib using the install-wp-tests.sh script

   $ tests/phpunit/bin/install-wp-tests.sh <db-name> <db-user> <db-pass> [db-host] [wp-version] [skip-database-creation]
   

Install the test library and latest WordPress with a new database, using root credentials

$ tests/phpunit/bin/install-wp-tests.sh googlesitekit_tests root password

If you don't have mysqladmin installed on your host, you'll need to create a database manually and set skip-database-creation to true.
If you're not sure, run which mysqladmin which will output the path to the executable if installed, or nothing if not installed.

$ tests/phpunit/bin/install-wp-tests.sh googlesitekit_tests root password localhost latest true

Important: The <db-name> database will be created if it doesn't exist and all data will be removed during testing.

Run all PHPUnit tests using Composer

$ composer test

This ensures that the tests are run with the version of PHPUnit required by Google Site Kit rather than requiring it to be globally installed on your system.

You can run specific tests by providing the path and filename to the test class or a directory containing tests:

$ composer test -- tests/phpunit/integration/Core

You can run specific tests by providing group arguments:

$ composer test -- --group Modules

Running with the WordPress Core PHPUnit configuration:

$WP_TESTS_DIR=/path/to/wp/develop/phpunit composer test

Tests are automatically run with GitHub Actions for each commit and pull request.