wordpress-develop/tests/phpunit/tests/multisite/isEmailAddressUnsafe.php

<?php

if ( is_multisite() ) :

	/**
	 * @group multisite
	 */
	class Tests_Multisite_IsEmailAddressUnsafe extends WP_UnitTestCase {
		public function test_string_domain_list_should_be_split_on_line_breaks() {
			update_site_option( 'banned_email_domains', "foo.com\nbar.org\nbaz.gov" );
			$this->assertTrue( is_email_address_unsafe( 'foo@bar.org' ) );
			$this->assertFalse( is_email_address_unsafe( 'foo@example.org' ) );
		}

		/**
		 * @dataProvider data_unsafe
		 * @ticket 25046
		 * @ticket 21570
		 */
		public function test_unsafe_emails( $banned, $email ) {
			update_site_option( 'banned_email_domains', $banned );
			$this->assertTrue( is_email_address_unsafe( $email ) );
		}

		/**
		 * @dataProvider data_safe
		 * @ticket 25046
		 * @ticket 21570
		 */
		public function test_safe_emails( $banned, $email ) {
			update_site_option( 'banned_email_domains', $banned );
			$this->assertFalse( is_email_address_unsafe( $email ) );
		}

		public function data_unsafe() {
			return array(
				// 25046
				'case_insensitive_1' => array(
					array( 'baR.com' ),
					'test@Bar.com',
				),
				'case_insensitive_2' => array(
					array( 'baR.com' ),
					'tEst@bar.com',
				),
				'case_insensitive_3' => array(
					array( 'barfoo.COM' ),
					'test@barFoo.com',
				),
				'case_insensitive_4' => array(
					array( 'baR.com' ),
					'tEst@foo.bar.com',
				),
				'case_insensitive_5' => array(
					array( 'BAZ.com' ),
					'test@baz.Com',
				),

				// 21570
				array(
					array( 'bar.com', 'foo.co' ),
					'test@bar.com',
				),
				'subdomain_1'        => array(
					array( 'bar.com', 'foo.co' ),
					'test@foo.bar.com',
				),
				array(
					array( 'bar.com', 'foo.co' ),
					'test@foo.co',
				),
				'subdomain_2'        => array(
					array( 'bar.com', 'foo.co' ),
					'test@subdomain.foo.co',
				),
			);
		}

		public function data_safe() {
			return array(
				// 25046
				array(
					array( 'baR.com', 'Foo.co', 'barfoo.COM', 'BAZ.com' ),
					'test@Foobar.com',
				),
				array(
					array( 'baR.com', 'Foo.co', 'barfoo.COM', 'BAZ.com' ),
					'test@Foo-bar.com',
				),
				array(
					array( 'baR.com', 'Foo.co', 'barfoo.COM', 'BAZ.com' ),
					'tEst@foobar.com',
				),
				array(
					array( 'baR.com', 'Foo.co', 'barfoo.COM', 'BAZ.com' ),
					'test@Subdomain.Foo.com',
				),
				array(
					array( 'baR.com', 'Foo.co', 'barfoo.COM', 'BAZ.com' ),
					'test@feeBAz.com',
				),

				// 21570
				array(
					array( 'bar.com', 'foo.co' ),
					'test@foobar.com',
				),
				array(
					array( 'bar.com', 'foo.co' ),
					'test@foo-bar.com',
				),
				array(
					array( 'bar.com', 'foo.co' ),
					'test@foo.com',
				),
				array(
					array( 'bar.com', 'foo.co' ),
					'test@subdomain.foo.com',
				),
			);
		}

		public function test_email_with_only_top_level_domain_returns_safe() {
			update_site_option( 'banned_email_domains', 'bar.com' );
			$safe = is_email_address_unsafe( 'email@localhost' );
			delete_site_option( 'banned_email_domains' );

			$this->assertFalse( $safe );
		}

		public function test_invalid_email_without_domain_returns_safe() {
			update_site_option( 'banned_email_domains', 'bar.com' );
			$safe = is_email_address_unsafe( 'invalid-email' );
			delete_site_option( 'bar.com' );

			$this->assertFalse( $safe );
		}
	}

endif;