woocommerce/plugins/woocommerce-admin/tests/api/report-controllers.php

<?php
/**
 * REST Controller Tests
 *
 * @package WooCommerce\Tests\API
 * @since 3.6.4
 */

/**
 * REST Controller Tests Class
 *
 * @package WooCommerce\Tests\API
 * @since 3.6.4
 */
class WC_Tests_API_Report_Controllers extends WP_UnitTestCase {
	/**
	 * Setup test admin notes data. Called before every test.
	 *
	 * @since 3.5.0
	 */
	public function setUp() {
		parent::setUp();

		$this->user = $this->factory->user->create(
			array(
				'role' => 'administrator',
			)
		);

		wp_set_current_user( $this->user );
	}

	/**
	 * Ensure that every REST controller works with their defaults.
	 */
	public function test_default_params() {
		// This list intentionall missing `WC_Admin_REST_Setting_Options_Controller`
		// because it's just a version override.
		$controller_classes = array(
			'WC_Admin_REST_Admin_Notes_Controller',
			'WC_Admin_REST_Admin_Note_Action_Controller',
			'WC_Admin_REST_Coupons_Controller',
			'WC_Admin_REST_Customers_Controller',
			'WC_Admin_REST_Data_Controller',
			'WC_Admin_REST_Data_Countries_Controller',
			'WC_Admin_REST_Data_Download_Ips_Controller',
			'WC_Admin_REST_Leaderboards_Controller',
			'WC_Admin_REST_Orders_Controller',
			'WC_Admin_REST_Products_Controller',
			'WC_Admin_REST_Product_Categories_Controller',
			'WC_Admin_REST_Product_Variations_Controller',
			'WC_Admin_REST_Product_Reviews_Controller',
			'WC_Admin_REST_Product_Variations_Controller',
			'WC_Admin_REST_Reports_Controller',
			'WC_Admin_REST_Reports_Import_Controller',
			'WC_Admin_REST_Reports_Products_Controller',
			'WC_Admin_REST_Reports_Variations_Controller',
			'WC_Admin_REST_Reports_Products_Stats_Controller',
			'WC_Admin_REST_Reports_Revenue_Stats_Controller',
			'WC_Admin_REST_Reports_Orders_Controller',
			'WC_Admin_REST_Reports_Orders_Stats_Controller',
			'WC_Admin_REST_Reports_Categories_Controller',
			'WC_Admin_REST_Reports_Taxes_Controller',
			'WC_Admin_REST_Reports_Taxes_Stats_Controller',
			'WC_Admin_REST_Reports_Coupons_Controller',
			'WC_Admin_REST_Reports_Coupons_Stats_Controller',
			'WC_Admin_REST_Reports_Stock_Controller',
			'WC_Admin_REST_Reports_Stock_Stats_Controller',
			'WC_Admin_REST_Reports_Downloads_Controller',
			'WC_Admin_REST_Reports_Downloads_Stats_Controller',
			'WC_Admin_REST_Reports_Customers_Controller',
			'WC_Admin_REST_Reports_Customers_Stats_Controller',
			'WC_Admin_REST_Taxes_Controller',
			'WC_Admin_REST_Onboarding_Levels_Controller',
			'WC_Admin_REST_Onboarding_Profile_Controller',
			'WC_Admin_REST_Onboarding_Plugins_Controller',
			'WC_Admin_REST_Reports_Performance_Indicators_Controller',
		);

		// Force REST controllers to load.
		do_action( 'rest_api_init' );

		foreach ( $controller_classes as $controller_class ) {
			$controller = new $controller_class();
			$params     = $controller->get_collection_params();
			$defaults   = array();

			foreach ( $params as $arg => $options ) {
				if ( isset( $options['default'] ) ) {
					$defaults[ $arg ] = $options['default'];
				}
			}

			$request = new WP_REST_Request();
			$request->set_default_params( $defaults );
			$response = $controller->get_items( $request );

			// Surface any errors for easier debugging.
			if ( is_wp_error( $response ) ) {
				$this->fail( $response->get_error_message() );
			}

			$this->assertTrue( is_array( $response->get_data() ) );
		}
	}
}