legacy-customer-filter-test.php

<?php
/**
 * Legacy Customers API Tests
 * @package WooCommerce\Tests\API
 */
class WC_Tests_API_Legacy_Customers extends WC_API_Unit_Test_Case {

	/** @var WC_API_Customers instance */
	protected $endpoint;

	/**
	 * Setup test customer data.
	 */
	public function setUp() {
		parent::setUp();
		$this->endpoint = WC()->api->WC_API_Customers;
	}

	/**
	* Test GET customers filtering
	*/
	public function test_filter_customer() {
		global $wpdb;

	 	wp_insert_user( array(
			'user_email' => 'test_filter_customer_2@woo.local',
			'user_login' => 'test_filter_customer_2',
			'user_pass' => 'hunter2',
			'user_registered' => '2016-01-01T12:12:12Z',
			'role' => 'customer',
		) );

		wp_insert_user( array(
			'user_email' => 'test_filter_customer_1@woo.local',
			'user_login' => 'test_filter_customer_1',
			'user_pass' => 'hunter2',
			'user_registered' => '2016-01-03T12:12:12Z',
			'role' => 'customer',
		) );

		$response = $this->endpoint->get_customers( null, array( 'created_at_min' => '2016-01-01 00:00:00', 'created_at_max' => '2016-01-01 23:59:59' ) );
		$this->assertEquals( 1, count( $response) );
	}

}