<?php

if ( is_multisite() ) :

	/**
	 * Tests specific to sites in multisite.
	 *
	 * @group ms-site
	 * @group multisite
	 */
	class Tests_Multisite_Site extends WP_UnitTestCase {
		protected $suppress                = false;
		protected $site_status_hooks       = array();
		protected $wp_initialize_site_args = array();
		protected $wp_initialize_site_meta = array();
		protected static $network_ids;
		protected static $site_ids;
		protected static $uninitialized_site_id;

		public function set_up() {
			global $wpdb;
			parent::set_up();
			$this->suppress = $wpdb->suppress_errors();
		}

		public function tear_down() {
			global $wpdb;
			$wpdb->suppress_errors( $this->suppress );
			parent::tear_down();
		}

		public static function wpSetUpBeforeClass( WP_UnitTest_Factory $factory ) {
			self::$network_ids = array(
				'make.wordpress.org/' => array(
					'domain' => 'make.wordpress.org',
					'path'   => '/',
				),
			);

			foreach ( self::$network_ids as &$id ) {
				$id = $factory->network->create( $id );
			}
			unset( $id );

			self::$site_ids = array(
				'make.wordpress.org/'     => array(
					'domain'     => 'make.wordpress.org',
					'path'       => '/',
					'network_id' => self::$network_ids['make.wordpress.org/'],
				),
				'make.wordpress.org/foo/' => array(
					'domain'     => 'make.wordpress.org',
					'path'       => '/foo/',
					'network_id' => self::$network_ids['make.wordpress.org/'],
				),
			);

			foreach ( self::$site_ids as &$id ) {
				$id = $factory->blog->create( $id );
			}
			unset( $id );

			remove_action( 'wp_initialize_site', 'wp_initialize_site', 10 );
			self::$uninitialized_site_id = wp_insert_site(
				array(
					'domain'     => 'uninitialized.org',
					'path'       => '/',
					'network_id' => self::$network_ids['make.wordpress.org/'],
				)
			);
			add_action( 'wp_initialize_site', 'wp_initialize_site', 10, 2 );
		}

		public static function wpTearDownAfterClass() {
			global $wpdb;

			remove_action( 'wp_uninitialize_site', 'wp_uninitialize_site', 10 );
			wp_delete_site( self::$uninitialized_site_id );
			add_action( 'wp_uninitialize_site', 'wp_uninitialize_site', 10, 1 );

			foreach ( self::$site_ids as $id ) {
				wp_delete_site( $id );
			}

			foreach ( self::$network_ids as $id ) {
				$wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->sitemeta} WHERE site_id = %d", $id ) );
				$wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->site} WHERE id= %d", $id ) );
			}
		}

		public function test_switch_restore_blog() {
			global $_wp_switched_stack, $wpdb;

			$this->assertSame( array(), $_wp_switched_stack );
			$this->assertFalse( ms_is_switched() );
			$current_blog_id = get_current_blog_id();
			$this->assertIsInt( $current_blog_id );

			wp_cache_set( 'switch-test', $current_blog_id, 'switch-test' );
			$this->assertSame( $current_blog_id, wp_cache_get( 'switch-test', 'switch-test' ) );

			$blog_id = self::factory()->blog->create();

			$cap_key = wp_get_current_user()->cap_key;
			switch_to_blog( $blog_id );
			$this->assertNotEquals( $cap_key, wp_get_current_user()->cap_key );
			$this->assertSame( array( $current_blog_id ), $_wp_switched_stack );
			$this->assertTrue( ms_is_switched() );
			$this->assertSame( $blog_id, $wpdb->blogid );
			$this->assertFalse( wp_cache_get( 'switch-test', 'switch-test' ) );
			wp_cache_set( 'switch-test', $blog_id, 'switch-test' );
			$this->assertSame( $blog_id, wp_cache_get( 'switch-test', 'switch-test' ) );

			switch_to_blog( $blog_id );
			$this->assertSame( array( $current_blog_id, $blog_id ), $_wp_switched_stack );
			$this->assertTrue( ms_is_switched() );
			$this->assertSame( $blog_id, $wpdb->blogid );
			$this->assertSame( $blog_id, wp_cache_get( 'switch-test', 'switch-test' ) );

			restore_current_blog();
			$this->assertSame( array( $current_blog_id ), $_wp_switched_stack );
			$this->assertTrue( ms_is_switched() );
			$this->assertSame( $blog_id, $wpdb->blogid );
			$this->assertSame( $blog_id, wp_cache_get( 'switch-test', 'switch-test' ) );

			restore_current_blog();
			$this->assertSame( $cap_key, wp_get_current_user()->cap_key );
			$this->assertSame( $current_blog_id, get_current_blog_id() );
			$this->assertSame( array(), $_wp_switched_stack );
			$this->assertFalse( ms_is_switched() );
			$this->assertSame( $current_blog_id, wp_cache_get( 'switch-test', 'switch-test' ) );

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

		/**
		 * Test the cache keys and database tables setup through the creation of a site.
		 */
		public function test_created_site_details() {
			global $wpdb;

			$blog_id = self::factory()->blog->create();

			$this->assertIsInt( $blog_id );
			$prefix = $wpdb->get_blog_prefix( $blog_id );

			// $get_all = false, only retrieve details from the blogs table.
			$details = get_blog_details( $blog_id, false );

			// Combine domain and path for a site specific cache key.
			$key = md5( $details->domain . $details->path );

			$this->assertEquals( $details, wp_cache_get( $blog_id . 'short', 'blog-details' ) );

			// get_blogaddress_by_name().
			$this->assertSame( 'http://' . $details->domain . $details->path, get_blogaddress_by_name( trim( $details->path, '/' ) ) );

			// These are empty until get_blog_details() is called with $get_all = true.
			$this->assertFalse( wp_cache_get( $blog_id, 'blog-details' ) );
			$this->assertFalse( wp_cache_get( $key, 'blog-lookup' ) );

			// $get_all = true, populate the full blog-details cache and the blog slug lookup cache.
			$details = get_blog_details( $blog_id, true );
			$this->assertEquals( $details, wp_cache_get( $blog_id, 'blog-details' ) );
			$this->assertEquals( $details, wp_cache_get( $key, 'blog-lookup' ) );

			// Check existence of each database table for the created site.
			foreach ( $wpdb->tables( 'blog', false ) as $table ) {
				$suppress = $wpdb->suppress_errors();

				// phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared
				$table_fields = $wpdb->get_results( "DESCRIBE $prefix$table;" );

				$wpdb->suppress_errors( $suppress );

				// The table should exist.
				$this->assertNotEmpty( $table_fields );

				// And the table should not be empty, unless commentmeta, termmeta, or links.
				// phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared
				$result = $wpdb->get_results( "SELECT * FROM $prefix$table LIMIT 1" );

				if ( 'commentmeta' === $table || 'termmeta' === $table || 'links' === $table ) {
					$this->assertEmpty( $result );
				} else {
					$this->assertNotEmpty( $result );
				}
			}

			// Update the blog count cache to use get_blog_count().
			wp_update_network_counts();
			$this->assertSame( 2, (int) get_blog_count() );
		}

		public function test_site_caches_should_invalidate_when_invalidation_is_not_suspended() {
			$site_id = self::factory()->blog->create();

			$details = get_site( $site_id );

			$suspend = wp_suspend_cache_invalidation( false );
			update_blog_details( $site_id, array( 'path' => '/a-non-random-test-path/' ) );
			$new_details = get_site( $site_id );
			wp_suspend_cache_invalidation( $suspend );

			$this->assertNotEquals( $details->path, $new_details->path );
		}

		public function test_site_caches_should_not_invalidate_when_invalidation_is_suspended() {
			$site_id = self::factory()->blog->create();

			$details = get_site( $site_id );

			$suspend = wp_suspend_cache_invalidation();
			update_blog_details( $site_id, array( 'path' => '/a-non-random-test-path/' ) );
			$new_details = get_site( $site_id );
			wp_suspend_cache_invalidation( $suspend );

			$this->assertSame( $details->path, $new_details->path );
		}

		/**
		 * When a site is flagged as 'deleted', its data should be cleared from cache.
		 */
		public function test_data_in_cache_after_wpmu_delete_blog_drop_false() {
			$blog_id = self::factory()->blog->create();

			$details = get_blog_details( $blog_id, false );
			$key     = md5( $details->domain . $details->path );

			// Delete the site without forcing a table drop.
			wpmu_delete_blog( $blog_id, false );

			$this->assertFalse( wp_cache_get( $blog_id, 'blog-details' ) );
			$this->assertFalse( wp_cache_get( $blog_id . 'short', 'blog-details' ) );
			$this->assertFalse( wp_cache_get( $key, 'blog-lookup' ) );
			$this->assertFalse( wp_cache_get( $key, 'blog-id-cache' ) );
		}

		/**
		 * When a site is flagged as 'deleted', its data should remain in the database.
		 */
		public function test_data_in_tables_after_wpmu_delete_blog_drop_false() {
			global $wpdb;

			$blog_id = self::factory()->blog->create();

			// Delete the site without forcing a table drop.
			wpmu_delete_blog( $blog_id, false );

			$prefix = $wpdb->get_blog_prefix( $blog_id );
			foreach ( $wpdb->tables( 'blog', false ) as $table ) {
				$suppress = $wpdb->suppress_errors();

				// phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared
				$table_fields = $wpdb->get_results( "DESCRIBE $prefix$table;" );

				$wpdb->suppress_errors( $suppress );
				$this->assertNotEmpty( $table_fields, $prefix . $table );
			}
		}

		/**
		 * When a site is fully deleted, its data should be cleared from cache.
		 */
		public function test_data_in_cache_after_wpmu_delete_blog_drop_true() {
			$blog_id = self::factory()->blog->create();

			$details = get_blog_details( $blog_id, false );
			$key     = md5( $details->domain . $details->path );

			// Delete the site and force a table drop.
			wpmu_delete_blog( $blog_id, true );

			$this->assertFalse( wp_cache_get( $blog_id, 'blog-details' ) );
			$this->assertFalse( wp_cache_get( $blog_id . 'short', 'blog-details' ) );
			$this->assertFalse( wp_cache_get( $key, 'blog-lookup' ) );
			$this->assertFalse( wp_cache_get( $key, 'blog-id-cache' ) );
		}

		/**
		 * When a site is fully deleted, its data should be removed from the database.
		 */
		public function test_data_in_tables_after_wpmu_delete_blog_drop_true() {
			global $wpdb;

			$blog_id = self::factory()->blog->create();

			// Delete the site and force a table drop.
			wpmu_delete_blog( $blog_id, true );

			$prefix = $wpdb->get_blog_prefix( $blog_id );
			foreach ( $wpdb->tables( 'blog', false ) as $table ) {
				$suppress = $wpdb->suppress_errors();

				// phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared
				$table_fields = $wpdb->get_results( "DESCRIBE $prefix$table;" );

				$wpdb->suppress_errors( $suppress );
				$this->assertEmpty( $table_fields );
			}
		}

		/**
		 * When the main site of a network is fully deleted, its data should be cleared from cache.
		 */
		public function test_data_in_cache_after_wpmu_delete_blog_main_site_drop_true() {
			$blog_id = 1; // The main site in our test suite has an ID of 1.

			$details = get_blog_details( $blog_id, false );
			$key     = md5( $details->domain . $details->path );

			// Delete the site and force a table drop.
			wpmu_delete_blog( $blog_id, true );

			$this->assertFalse( wp_cache_get( $blog_id, 'blog-details' ) );
			$this->assertFalse( wp_cache_get( $blog_id . 'short', 'blog-details' ) );
			$this->assertFalse( wp_cache_get( $key, 'blog-lookup' ) );
			$this->assertFalse( wp_cache_get( $key, 'blog-id-cache' ) );
		}

		/**
		 * When the main site of a network is fully deleted, its data should remain in the database.
		 */
		public function test_data_in_tables_after_wpmu_delete_blog_main_site_drop_true() {
			global $wpdb;

			$blog_id = 1; // The main site in our test suite has an ID of 1.

			// Delete the site and force a table drop.
			wpmu_delete_blog( $blog_id, true );

			$prefix = $wpdb->get_blog_prefix( $blog_id );
			foreach ( $wpdb->tables( 'blog', false ) as $table ) {
				$suppress = $wpdb->suppress_errors();

				// phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared
				$table_fields = $wpdb->get_results( "DESCRIBE $prefix$table;" );

				$wpdb->suppress_errors( $suppress );
				$this->assertNotEmpty( $table_fields, $prefix . $table );
			}
		}

		/**
		 * The site count of a network should change when a site is flagged as 'deleted'.
		 */
		public function test_network_count_after_wpmu_delete_blog_drop_false() {
			$blog_id = self::factory()->blog->create();

			// Delete the site without forcing a table drop.
			wpmu_delete_blog( $blog_id, false );

			// Update the blog count cache to use get_blog_count().
			wp_update_network_counts();
			$this->assertSame( 1, get_blog_count() );
		}

		/**
		 * The site count of a network should change when a site is fully deleted.
		 */
		public function test_blog_count_after_wpmu_delete_blog_drop_true() {
			$blog_id = self::factory()->blog->create();

			// Delete the site and force a table drop.
			wpmu_delete_blog( $blog_id, true );

			// Update the blog count cache to use get_blog_count().
			wp_update_network_counts();
			$this->assertSame( 1, get_blog_count() );
		}

		/**
		 * When a site is deleted with wpmu_delete_blog(), only the files associated with
		 * that site should be removed. When wpmu_delete_blog() is run a second time, nothing
		 * should change with upload directories.
		 */
		public function test_upload_directories_after_multiple_wpmu_delete_blog() {
			$filename = __FUNCTION__ . '.jpg';
			$contents = __FUNCTION__ . '_contents';

			// Upload a file to the main site on the network.
			$file1 = wp_upload_bits( $filename, null, $contents );

			$blog_id = self::factory()->blog->create();

			switch_to_blog( $blog_id );
			$file2 = wp_upload_bits( $filename, null, $contents );
			restore_current_blog();

			wpmu_delete_blog( $blog_id, true );

			// The file on the main site should still exist. The file on the deleted site should not.
			$this->assertFileExists( $file1['file'] );
			$this->assertFileDoesNotExist( $file2['file'] );

			wpmu_delete_blog( $blog_id, true );

			// The file on the main site should still exist. The file on the deleted site should not.
			$this->assertFileExists( $file1['file'] );
			$this->assertFileDoesNotExist( $file2['file'] );

			unlink( $file1['file'] );
		}

		public function test_wpmu_update_blogs_date() {
			global $wpdb;

			wpmu_update_blogs_date();

			$blog         = get_site( get_current_blog_id() );
			$current_time = time();

			// Compare the update time with the current time, allow delta < 2.
			$this->assertEqualsWithDelta( $current_time, strtotime( $blog->last_updated ), 2, 'The dates should be equal' );
		}

		/**
		 * Test cached data for a site that does not exist and then again after it exists.
		 *
		 * @ticket 23405
		 */
		public function test_get_blog_details_when_site_does_not_exist() {
			// Create an unused site so that we can then assume an invalid site ID.
			$blog_id = self::factory()->blog->create();
			++$blog_id;

			// Prime the cache for an invalid site.
			get_blog_details( $blog_id );

			// When the cache is primed with an invalid site, the value is set to -1.
			$this->assertSame( -1, wp_cache_get( $blog_id, 'blog-details' ) );

			// Create a site in the invalid site's place.
			self::factory()->blog->create();

			// When a new site is created, its cache is cleared through refresh_blog_details.
			$this->assertFalse( wp_cache_get( $blog_id, 'blog-details' ) );

			$blog = get_blog_details( $blog_id );

			// When the cache is refreshed, it should now equal the site data.
			$this->assertEquals( $blog, wp_cache_get( $blog_id, 'blog-details' ) );
		}

		/**
		 * @ticket 26410
		 */
		public function test_blog_details_cache_invalidation() {
			update_option( 'blogname', 'foo' );
			$details = get_site( get_current_blog_id() );
			$this->assertSame( 'foo', $details->blogname );

			update_option( 'blogname', 'bar' );
			$details = get_site( get_current_blog_id() );
			$this->assertSame( 'bar', $details->blogname );
		}

		/**
		 * Test the original and cached responses for a created and then deleted site when
		 * the blog ID is requested through get_blog_id_from_url().
		 */
		public function test_get_blog_id_from_url() {
			$blog_id = self::factory()->blog->create();
			$details = get_site( $blog_id );
			$key     = md5( $details->domain . $details->path );

			// Test the original response and cached response for the newly created site.
			$this->assertSame( $blog_id, get_blog_id_from_url( $details->domain, $details->path ) );
			$this->assertSame( $blog_id, wp_cache_get( $key, 'blog-id-cache' ) );
		}

		/**
		 * Test the case insensitivity of the site lookup.
		 */
		public function test_get_blog_id_from_url_is_case_insensitive() {
			$blog_id = self::factory()->blog->create(
				array(
					'domain' => 'example.com',
					'path'   => '/xyz',
				)
			);
			$details = get_site( $blog_id );

			$this->assertSame( $blog_id, get_blog_id_from_url( strtoupper( $details->domain ), strtoupper( $details->path ) ) );
		}

		/**
		 * Test the first and cached responses for a site that does not exist.
		 */
		public function test_get_blog_id_from_url_that_does_not_exist() {
			$blog_id = self::factory()->blog->create( array( 'path' => '/xyz' ) );
			$details = get_site( $blog_id );

			$this->assertSame( 0, get_blog_id_from_url( $details->domain, 'foo' ) );
			$this->assertSame( -1, wp_cache_get( md5( $details->domain . 'foo' ), 'blog-id-cache' ) );
		}

		/**
		 * A blog ID is still available if only the `deleted` flag is set for a site. The same
		 * behavior would be expected if passing `false` explicitly to `wpmu_delete_blog()`.
		 */
		public function test_get_blog_id_from_url_with_deleted_flag() {
			$blog_id = self::factory()->blog->create();
			$details = get_site( $blog_id );
			$key     = md5( $details->domain . $details->path );
			wpmu_delete_blog( $blog_id );

			$this->assertSame( $blog_id, get_blog_id_from_url( $details->domain, $details->path ) );
			$this->assertSame( $blog_id, wp_cache_get( $key, 'blog-id-cache' ) );
		}

		/**
		 * When deleted with the drop parameter as true, the cache will first be false, then set to
		 * -1 after an attempt at `get_blog_id_from_url()` is made.
		 */
		public function test_get_blog_id_from_url_after_dropped() {
			$blog_id = self::factory()->blog->create();
			$details = get_site( $blog_id );
			$key     = md5( $details->domain . $details->path );
			wpmu_delete_blog( $blog_id, true );

			$this->assertFalse( wp_cache_get( $key, 'blog-id-cache' ) );
			$this->assertSame( 0, get_blog_id_from_url( $details->domain, $details->path ) );
			$this->assertSame( -1, wp_cache_get( $key, 'blog-id-cache' ) );
		}

		/**
		 * Test with default parameter of site_id as null.
		 */
		public function test_is_main_site() {
			$this->assertTrue( is_main_site() );
		}

		/**
		 * Test with a site id of get_current_blog_id(), which should be the same as the
		 * default parameter tested above.
		 */
		public function test_current_blog_id_is_main_site() {
			$this->assertTrue( is_main_site( get_current_blog_id() ) );
		}

		/**
		 * Test with a site ID other than the main site to ensure a false response.
		 */
		public function test_is_main_site_is_false_with_other_blog_id() {
			$blog_id = self::factory()->blog->create();

			$this->assertFalse( is_main_site( $blog_id ) );
		}

		/**
		 * Test with no passed ID after switching to another site ID.
		 */
		public function test_is_main_site_is_false_after_switch_to_blog() {
			$blog_id = self::factory()->blog->create();
			switch_to_blog( $blog_id );

			$this->assertFalse( is_main_site() );

			restore_current_blog();
		}

		public function test_switch_upload_dir() {
			$this->assertTrue( is_main_site() );

			$site = get_current_site();
			$date = date_format( date_create( 'now' ), 'Y/m' );

			$info = wp_upload_dir();
			$this->assertSame( 'http://' . $site->domain . '/wp-content/uploads/' . $date, $info['url'] );
			$this->assertSame( ABSPATH . 'wp-content/uploads/' . $date, $info['path'] );
			$this->assertSame( '/' . $date, $info['subdir'] );
			$this->assertFalse( $info['error'] );

			$blog_id = self::factory()->blog->create();

			switch_to_blog( $blog_id );
			$info = wp_upload_dir();
			$this->assertSame( 'http://' . $site->domain . '/wp-content/uploads/sites/' . get_current_blog_id() . '/' . $date, $info['url'] );
			$this->assertSame( ABSPATH . 'wp-content/uploads/sites/' . get_current_blog_id() . '/' . $date, $info['path'] );
			$this->assertSame( '/' . $date, $info['subdir'] );
			$this->assertFalse( $info['error'] );
			restore_current_blog();

			$info = wp_upload_dir();
			$this->assertSame( 'http://' . $site->domain . '/wp-content/uploads/' . $date, $info['url'] );
			$this->assertSame( ABSPATH . 'wp-content/uploads/' . $date, $info['path'] );
			$this->assertSame( '/' . $date, $info['subdir'] );
			$this->assertFalse( $info['error'] );
		}

		/**
		 * Test the primary purpose of get_blog_post(), to retrieve a post from
		 * another site on the network.
		 */
		public function test_get_blog_post_from_another_site_on_network() {
			$blog_id = self::factory()->blog->create();
			$post_id = self::factory()->post->create(); // Create a post on the primary site, ID 1.
			$post    = get_post( $post_id );
			switch_to_blog( $blog_id );

			// The post created and retrieved on the main site should match the one retrieved "remotely".
			$this->assertEquals( $post, get_blog_post( 1, $post_id ) );

			restore_current_blog();
		}

		/**
		 * If get_blog_post() is used on the same site, it should still work.
		 */
		public function test_get_blog_post_from_same_site() {
			$post_id = self::factory()->post->create();

			$this->assertEquals( get_blog_post( 1, $post_id ), get_post( $post_id ) );
		}

		/**
		 * A null response should be returned if an invalid post is requested.
		 */
		public function test_get_blog_post_invalid_returns_null() {
			$this->assertNull( get_blog_post( 1, 999999 ) );
		}

		/**
		 * Added as a callback to the domain_exists filter to provide manual results for
		 * the testing of the filter and for a test which does not need the database.
		 */
		public function domain_exists_cb( $exists, $domain, $path, $site_id ) {
			if ( 'foo' === $domain && 'bar/' === $path ) {
				return 1234;
			} else {
				return null;
			}
		}

		public function test_domain_exists_with_default_site_id() {
			$details = get_site( 1 );

			$this->assertSame( 1, domain_exists( $details->domain, $details->path ) );
		}

		public function test_domain_exists_with_specified_site_id() {
			$details = get_site( 1 );

			$this->assertSame( 1, domain_exists( $details->domain, $details->path, $details->site_id ) );
		}

		/**
		 * When the domain is valid, but the resulting site does not belong to the specified network,
		 * it is marked as not existing.
		 */
		public function test_domain_does_not_exist_with_invalid_site_id() {
			$details = get_site( 1 );

			$this->assertNull( domain_exists( $details->domain, $details->path, 999 ) );
		}

		public function test_invalid_domain_does_not_exist_with_default_site_id() {
			$this->assertNull( domain_exists( 'foo', 'bar' ) );
		}

		public function test_domain_filtered_to_exist() {
			add_filter( 'domain_exists', array( $this, 'domain_exists_cb' ), 10, 4 );
			$exists = domain_exists( 'foo', 'bar' );
			remove_filter( 'domain_exists', array( $this, 'domain_exists_cb' ), 10, 4 );
			$this->assertSame( 1234, $exists );
		}

		/**
		 * When a path is passed to domain_exists, it is immediately trailing slashed. A path
		 * value with or without the slash should result in the same return value.
		 */
		public function test_slashed_path_in_domain_exists() {
			add_filter( 'domain_exists', array( $this, 'domain_exists_cb' ), 10, 4 );
			$exists1 = domain_exists( 'foo', 'bar' );
			$exists2 = domain_exists( 'foo', 'bar/' );
			remove_filter( 'domain_exists', array( $this, 'domain_exists_cb' ), 10, 4 );

			// Make sure the same result is returned with or without a trailing slash.
			$this->assertSame( $exists1, $exists2 );
		}

		/**
		 * Tests returning an address for a given valid ID.
		 */
		public function test_get_blogaddress_by_id_with_valid_id() {
			$blogaddress = get_blogaddress_by_id( 1 );
			$this->assertSame( 'http://' . WP_TESTS_DOMAIN . '/', $blogaddress );
		}

		/**
		 * Tests returning an empty string for a non-existing ID.
		 */
		public function test_get_blogaddress_by_id_with_invalid_id() {
			$blogaddress = get_blogaddress_by_id( PHP_INT_MAX );
			$this->assertSame( '', $blogaddress );
		}

		/**
		 * @ticket 14867
		 */
		public function test_get_blogaddress_by_id_scheme_reflects_blog_scheme() {
			$blog = self::factory()->blog->create();

			$this->assertSame( 'http', parse_url( get_blogaddress_by_id( $blog ), PHP_URL_SCHEME ) );

			update_blog_option( $blog, 'home', set_url_scheme( get_blog_option( $blog, 'home' ), 'https' ) );

			$this->assertSame( 'https', parse_url( get_blogaddress_by_id( $blog ), PHP_URL_SCHEME ) );
		}

		/**
		 * @ticket 14867
		 */
		public function test_get_blogaddress_by_id_scheme_is_unaffected_by_request() {
			$blog = self::factory()->blog->create();

			$this->assertFalse( is_ssl() );
			$this->assertSame( 'http', parse_url( get_blogaddress_by_id( $blog ), PHP_URL_SCHEME ) );

			$_SERVER['HTTPS'] = 'on';

			$is_ssl  = is_ssl();
			$address = parse_url( get_blogaddress_by_id( $blog ), PHP_URL_SCHEME );

			$this->assertTrue( $is_ssl );
			$this->assertSame( 'http', $address );
		}

		/**
		 * @ticket 33620
		 * @dataProvider data_new_blog_url_schemes
		 */
		public function test_new_blog_url_schemes( $home_scheme, $siteurl_scheme, $force_ssl_admin ) {
			$current_site = get_current_site();

			$home    = get_option( 'home' );
			$siteurl = get_site_option( 'siteurl' );
			$admin   = force_ssl_admin();

			// Setup:
			update_option( 'home', set_url_scheme( $home, $home_scheme ) );
			update_site_option( 'siteurl', set_url_scheme( $siteurl, $siteurl_scheme ) );
			force_ssl_admin( $force_ssl_admin );

			// Install:
			$new = wpmu_create_blog( $current_site->domain, '/new-blog/', 'New Blog', get_current_user_id() );

			// Reset:
			update_option( 'home', $home );
			update_site_option( 'siteurl', $siteurl );
			force_ssl_admin( $admin );

			// Assert:
			$this->assertNotWPError( $new );
			$this->assertSame( $home_scheme, parse_url( get_blog_option( $new, 'home' ), PHP_URL_SCHEME ) );
			$this->assertSame( $siteurl_scheme, parse_url( get_blog_option( $new, 'siteurl' ), PHP_URL_SCHEME ) );
		}

		public function data_new_blog_url_schemes() {
			return array(
				array(
					'https',
					'https',
					false,
				),
				array(
					'http',
					'https',
					false,
				),
				array(
					'https',
					'http',
					false,
				),
				array(
					'http',
					'http',
					false,
				),
				array(
					'http',
					'http',
					true,
				),
			);
		}

		/**
		 * @ticket 36918
		 */
		public function test_new_blog_locale() {
			$current_site = get_current_site();

			add_filter( 'sanitize_option_WPLANG', array( $this, 'filter_allow_unavailable_languages' ), 10, 3 );
			update_site_option( 'WPLANG', 'de_DE' );
			remove_filter( 'sanitize_option_WPLANG', array( $this, 'filter_allow_unavailable_languages' ), 10 );

			// No locale, use default locale.
			add_filter( 'sanitize_option_WPLANG', array( $this, 'filter_allow_unavailable_languages' ), 10, 3 );
			$blog_id = wpmu_create_blog( $current_site->domain, '/de-de/', 'New Blog', get_current_user_id() );
			remove_filter( 'sanitize_option_WPLANG', array( $this, 'filter_allow_unavailable_languages' ), 10 );

			$this->assertNotWPError( $blog_id );
			$this->assertSame( 'de_DE', get_blog_option( $blog_id, 'WPLANG' ) );

			// Custom locale.
			add_filter( 'sanitize_option_WPLANG', array( $this, 'filter_allow_unavailable_languages' ), 10, 3 );
			$blog_id = wpmu_create_blog( $current_site->domain, '/es-es/', 'New Blog', get_current_user_id(), array( 'WPLANG' => 'es_ES' ) );
			remove_filter( 'sanitize_option_WPLANG', array( $this, 'filter_allow_unavailable_languages' ), 10 );

			$this->assertNotWPError( $blog_id );
			$this->assertSame( 'es_ES', get_blog_option( $blog_id, 'WPLANG' ) );

			// en_US locale.
			add_filter( 'sanitize_option_WPLANG', array( $this, 'filter_allow_unavailable_languages' ), 10, 3 );
			$blog_id = wpmu_create_blog( $current_site->domain, '/en-us/', 'New Blog', get_current_user_id(), array( 'WPLANG' => '' ) );
			remove_filter( 'sanitize_option_WPLANG', array( $this, 'filter_allow_unavailable_languages' ), 10 );

			$this->assertNotWPError( $blog_id );
			$this->assertSame( '', get_blog_option( $blog_id, 'WPLANG' ) );
		}

		/**
		 * @ticket 40503
		 */
		public function test_different_network_language() {
			$network = get_network( self::$network_ids['make.wordpress.org/'] );

			add_filter( 'sanitize_option_WPLANG', array( $this, 'filter_allow_unavailable_languages' ), 10, 3 );

			update_network_option( self::$network_ids['make.wordpress.org/'], 'WPLANG', 'wibble' );
			$blog_id = wpmu_create_blog( $network->domain, '/de-de/', 'New Blog', get_current_user_id(), array(), $network->id );

			remove_filter( 'sanitize_option_WPLANG', array( $this, 'filter_allow_unavailable_languages' ), 10 );

			$this->assertSame( get_network_option( self::$network_ids['make.wordpress.org/'], 'WPLANG' ), get_blog_option( $blog_id, 'WPLANG' ) );
		}

		/**
		 * Allows to set the WPLANG option to any language.
		 *
		 * @param string $value          The sanitized option value.
		 * @param string $option         The option name.
		 * @param string $original_value The original value passed to the function.
		 * @return string The orginal value.
		 */
		public function filter_allow_unavailable_languages( $value, $option, $original_value ) {
			return $original_value;
		}

		/**
		 * @ticket 29684
		 */
		public function test_is_main_site_different_network() {
			$this->assertTrue( is_main_site( self::$site_ids['make.wordpress.org/'], self::$network_ids['make.wordpress.org/'] ) );
		}

		/**
		 * @ticket 29684
		 */
		public function test_is_main_site_different_network_random_site() {
			$this->assertFalse( is_main_site( self::$site_ids['make.wordpress.org/foo/'], self::$network_ids['make.wordpress.org/'] ) );
		}

		/**
		 * @ticket 40201
		 * @dataProvider data_get_site_caches
		 */
		public function test_clean_blog_cache( $key, $group ) {
			$site = get_site( self::$site_ids['make.wordpress.org/'] );

			$replacements = array(
				'%blog_id%'         => $site->blog_id,
				'%domain%'          => $site->domain,
				'%path%'            => $site->path,
				'%domain_path_key%' => md5( $site->domain . $site->path ),
			);

			$key = str_replace( array_keys( $replacements ), array_values( $replacements ), $key );

			if ( 'sites' === $group ) { // This needs to be actual data for get_site() lookups.
				wp_cache_set( $key, (object) $site->to_array(), $group );
			} else {
				wp_cache_set( $key, 'something', $group );
			}

			clean_blog_cache( $site );
			$this->assertFalse( wp_cache_get( $key, $group ) );
		}

		/**
		 * @ticket 40201
		 * @dataProvider data_get_site_caches
		 */
		public function test_clean_blog_cache_with_id( $key, $group ) {
			$site = get_site( self::$site_ids['make.wordpress.org/'] );

			$replacements = array(
				'%blog_id%'         => $site->blog_id,
				'%domain%'          => $site->domain,
				'%path%'            => $site->path,
				'%domain_path_key%' => md5( $site->domain . $site->path ),
			);

			$key = str_replace( array_keys( $replacements ), array_values( $replacements ), $key );

			if ( 'sites' === $group ) { // This needs to be actual data for get_site() lookups.
				wp_cache_set( $key, (object) $site->to_array(), $group );
			} else {
				wp_cache_set( $key, 'something', $group );
			}

			clean_blog_cache( $site->blog_id );
			$this->assertFalse( wp_cache_get( $key, $group ) );
		}

		/**
		 * @ticket 40201
		 */
		public function test_clean_blog_cache_resets_last_changed() {
			$site = get_site( self::$site_ids['make.wordpress.org/'] );

			wp_cache_delete( 'last_changed', 'sites' );

			clean_blog_cache( $site );
			$this->assertNotFalse( wp_cache_get( 'last_changed', 'sites' ) );
		}

		/**
		 * @ticket 40201
		 */
		public function test_clean_blog_cache_fires_action() {
			$site = get_site( self::$site_ids['make.wordpress.org/'] );

			$old_count = did_action( 'clean_site_cache' );

			clean_blog_cache( $site );
			$this->assertSame( $old_count + 1, did_action( 'clean_site_cache' ) );
		}

		/**
		 * @ticket 40201
		 */
		public function test_clean_blog_cache_bails_on_suspend_cache_invalidation() {
			$site = get_site( self::$site_ids['make.wordpress.org/'] );

			$old_count = did_action( 'clean_site_cache' );

			$suspend = wp_suspend_cache_invalidation();
			clean_blog_cache( $site );
			wp_suspend_cache_invalidation( $suspend );
			$this->assertSame( $old_count, did_action( 'clean_site_cache' ) );
		}

		/**
		 * @ticket 40201
		 */
		public function test_clean_blog_cache_bails_on_empty_input() {
			$old_count = did_action( 'clean_site_cache' );

			clean_blog_cache( null );
			$this->assertSame( $old_count, did_action( 'clean_site_cache' ) );
		}

		/**
		 * @ticket 40201
		 */
		public function test_clean_blog_cache_bails_on_non_numeric_input() {
			$old_count = did_action( 'clean_site_cache' );

			clean_blog_cache( 'something' );
			$this->assertSame( $old_count, did_action( 'clean_site_cache' ) );
		}

		/**
		 * @ticket 40201
		 */
		public function test_clean_blog_cache_works_with_deleted_site() {
			$site_id = 12345;

			wp_cache_set( $site_id, 'something', 'site-details' );

			clean_blog_cache( $site_id );
			$this->assertFalse( wp_cache_get( $site_id, 'site-details' ) );
		}

		/**
		 * @ticket 40201
		 * @dataProvider data_get_site_caches
		 */
		public function test_refresh_blog_details( $key, $group ) {
			$site = get_site( self::$site_ids['make.wordpress.org/'] );

			$replacements = array(
				'%blog_id%'         => $site->blog_id,
				'%domain%'          => $site->domain,
				'%path%'            => $site->path,
				'%domain_path_key%' => md5( $site->domain . $site->path ),
			);

			$key = str_replace( array_keys( $replacements ), array_values( $replacements ), $key );

			if ( 'sites' === $group ) { // This needs to be actual data for get_site() lookups.
				wp_cache_set( $key, (object) $site->to_array(), $group );
			} else {
				wp_cache_set( $key, 'something', $group );
			}

			refresh_blog_details( $site->blog_id );
			$this->assertFalse( wp_cache_get( $key, $group ) );
		}

		/**
		 * @ticket 40201
		 */
		public function test_refresh_blog_details_works_with_deleted_site() {
			$site_id = 12345;

			wp_cache_set( $site_id, 'something', 'site-details' );

			refresh_blog_details( $site_id );
			$this->assertFalse( wp_cache_get( $site_id, 'site-details' ) );
		}

		/**
		 * @ticket 40201
		 */
		public function test_refresh_blog_details_uses_current_site_as_default() {
			$site_id = get_current_blog_id();

			wp_cache_set( $site_id, 'something', 'site-details' );

			refresh_blog_details();
			$this->assertFalse( wp_cache_get( $site_id, 'site-details' ) );
		}

		public function data_get_site_caches() {
			return array(
				array( '%blog_id%', 'sites' ),
				array( '%blog_id%', 'site-details' ),
				array( '%blog_id%', 'blog-details' ),
				array( '%blog_id%' . 'short', 'blog-details' ),
				array( '%domain_path_key%', 'blog-lookup' ),
				array( '%domain_path_key%', 'blog-id-cache' ),
			);
		}

		/**
		 * @ticket 40364
		 * @dataProvider data_wp_insert_site
		 */
		public function test_wp_insert_site( $site_data, $expected_data ) {
			remove_action( 'wp_initialize_site', 'wp_initialize_site', 10 );
			$site_id = wp_insert_site( $site_data );

			$this->assertIsInt( $site_id );

			$site = get_site( $site_id );
			foreach ( $expected_data as $key => $value ) {
				$this->assertEquals( $value, $site->$key );
			}
		}

		public function data_wp_insert_site() {
			return array(
				array(
					array(
						'domain' => 'example.com',
					),
					array(
						'domain'     => 'example.com',
						'path'       => '/',
						'network_id' => 1,
						'public'     => 1,
						'archived'   => 0,
						'mature'     => 0,
						'spam'       => 0,
						'deleted'    => 0,
						'lang_id'    => 0,
					),
				),
				array(
					array(
						'domain'     => 'example.com',
						'path'       => '/foo',
						'network_id' => 2,
					),
					array(
						'domain'     => 'example.com',
						'path'       => '/foo/',
						'network_id' => 2,
					),
				),
				array(
					array(
						'domain'  => 'example.com',
						'path'    => '/bar/',
						'site_id' => 2,
					),
					array(
						'domain'     => 'example.com',
						'path'       => '/bar/',
						'network_id' => 2,
					),
				),
				array(
					array(
						'domain'     => 'example.com',
						'path'       => '/bar/',
						'site_id'    => 2,
						'network_id' => 3,
					),
					array(
						'domain'     => 'example.com',
						'path'       => '/bar/',
						'network_id' => 3,
					),
				),
				array(
					array(
						'domain'   => 'example.com',
						'path'     => 'foobar',
						'public'   => 0,
						'archived' => 1,
						'mature'   => 1,
						'spam'     => 1,
						'deleted'  => 1,
						'lang_id'  => 1,
					),
					array(
						'domain'   => 'example.com',
						'path'     => '/foobar/',
						'public'   => 0,
						'archived' => 1,
						'mature'   => 1,
						'spam'     => 1,
						'deleted'  => 1,
						'lang_id'  => 1,
					),
				),
			);
		}

		/**
		 * @ticket 50324
		 */
		public function test_wp_insert_site_with_clean_site_cache() {
			remove_action( 'wp_initialize_site', 'wp_initialize_site', 10 );

			add_action( 'clean_site_cache', array( $this, 'action_database_insert_on_clean_site_cache' ) );

			$site_id = wp_insert_site(
				array(
					'domain'     => 'valid-domain.com',
					'path'       => '/valid-path/',
					'network_id' => 1,
				)
			);

			remove_action( 'clean_site_cache', array( $this, 'action_database_insert_on_clean_site_cache' ) );

			$this->assertIsInt( $site_id );
		}

		public function action_database_insert_on_clean_site_cache() {
			update_site_option( 'database_write_test.' . time(), true );
		}

		/**
		 * @ticket 40364
		 */
		public function test_wp_insert_site_empty_domain() {
			remove_action( 'wp_initialize_site', 'wp_initialize_site', 10 );
			$site_id = wp_insert_site( array( 'public' => 0 ) );

			$this->assertWPError( $site_id );
			$this->assertSame( 'site_empty_domain', $site_id->get_error_code() );
		}

		/**
		 * @ticket 40364
		 * @dataProvider data_wp_update_site
		 */
		public function test_wp_update_site( $site_data, $expected_data ) {
			$site_id = self::factory()->blog->create();

			$old_site = get_site( $site_id );

			$result = wp_update_site( $site_id, $site_data );

			$this->assertSame( $site_id, $result );

			$new_site = get_site( $site_id );
			foreach ( $new_site->to_array() as $key => $value ) {
				if ( isset( $expected_data[ $key ] ) ) {
					$this->assertEquals( $expected_data[ $key ], $value );
				} elseif ( 'last_updated' === $key ) {
					$this->assertTrue( $old_site->last_updated <= $value );
				} else {
					$this->assertSame( $old_site->$key, $value );
				}
			}
		}

		public function data_wp_update_site() {
			return array(
				array(
					array(
						'domain'     => 'example.com',
						'network_id' => 2,
					),
					array(
						'domain'  => 'example.com',
						'site_id' => 2,
					),
				),
				array(
					array(
						'path' => 'foo',
					),
					array(
						'path' => '/foo/',
					),
				),
				array(
					array(
						'public'   => 0,
						'archived' => 1,
						'mature'   => 1,
						'spam'     => 1,
						'deleted'  => 1,
						'lang_id'  => 1,
					),
					array(
						'public'   => 0,
						'archived' => 1,
						'mature'   => 1,
						'spam'     => 1,
						'deleted'  => 1,
						'lang_id'  => 1,
					),
				),
			);
		}

		/**
		 * @ticket 40364
		 */
		public function test_wp_update_site_empty_domain() {
			$site_id = self::factory()->blog->create();

			$result = wp_update_site( $site_id, array( 'domain' => '' ) );

			$this->assertWPError( $result );
			$this->assertSame( 'site_empty_domain', $result->get_error_code() );
		}

		/**
		 * @ticket 40364
		 */
		public function test_wp_update_site_invalid_id() {
			$result = wp_update_site( 444444, array( 'domain' => 'example.com' ) );

			$this->assertWPError( $result );
			$this->assertSame( 'site_not_exist', $result->get_error_code() );
		}

		/**
		 * @ticket 40364
		 */
		public function test_wp_update_site_cleans_cache() {
			$site_id = self::factory()->blog->create();
			$site1   = get_site( $site_id );

			$result = wp_update_site( $site_id, array( 'public' => 0 ) );
			$site2  = get_site( $site_id );

			$result = wp_update_site( $site_id, array( 'public' => 1 ) );
			$site3  = get_site( $site_id );

			$this->assertSame( '1', $site1->public );
			$this->assertSame( '0', $site2->public );
			$this->assertSame( '1', $site3->public );
		}

		/**
		 * @ticket 40364
		 */
		public function test_wp_delete_site() {
			$site_id = self::factory()->blog->create();

			$site = get_site( $site_id );

			$result = wp_delete_site( $site_id );

			$this->assertInstanceOf( 'WP_Site', $result );
			$this->assertSame( $result->to_array(), $site->to_array() );
		}

		/**
		 * @ticket 40364
		 */
		public function test_wp_delete_site_invalid_id() {
			$result = wp_delete_site( 444444 );

			$this->assertWPError( $result );
			$this->assertSame( 'site_not_exist', $result->get_error_code() );
		}

		/**
		 * @ticket 41333
		 */
		public function test_wp_delete_site_validate_site_deletion_action() {
			add_action( 'wp_validate_site_deletion', array( $this, 'action_wp_validate_site_deletion_prevent_deletion' ) );
			$result = wp_delete_site( self::$site_ids['make.wordpress.org/'] );
			$this->assertWPError( $result );
			$this->assertSame( 'action_does_not_like_deletion', $result->get_error_code() );
		}

		public function action_wp_validate_site_deletion_prevent_deletion( $errors ) {
			$errors->add( 'action_does_not_like_deletion', 'You cannot delete this site because the action does not like it.' );
		}

		/**
		 * @ticket 40364
		 * @dataProvider data_wp_normalize_site_data
		 */
		public function test_wp_normalize_site_data( $data, $expected ) {
			$result = wp_normalize_site_data( $data );

			$this->assertSameSetsWithIndex( $expected, $result );
		}

		public function data_wp_normalize_site_data() {
			return array(
				array(
					array(
						'network_id' => '4',
					),
					array(
						'network_id' => 4,
					),
				),
				array(
					array(
						'domain' => 'invalid domain .com',
						'path'   => 'foo',
					),
					array(
						'domain' => 'invaliddomain.com',
						'path'   => '/foo/',
					),
				),
				array(
					array(
						'domain' => '<yet>/another-invalid-domain.com',
					),
					array(
						'domain' => 'another-invalid-domain.com',
					),
				),
				array(
					array(
						'path' => '',
					),
					array(
						'path' => '/',
					),
				),
				array(
					array(
						'public'   => '0',
						'archived' => '1',
						'mature'   => '1',
						'spam'     => true,
						'deleted'  => true,
					),
					array(
						'public'   => 0,
						'archived' => 1,
						'mature'   => 1,
						'spam'     => 1,
						'deleted'  => 1,
					),
				),
				array(
					array(
						'registered'   => '',
						'last_updated' => '',
					),
					array(),
				),
				array(
					array(
						'registered'   => '0000-00-00 00:00:00',
						'last_updated' => '0000-00-00 00:00:00',
					),
					array(),
				),
			);
		}

		/**
		 * @ticket 40364
		 * @dataProvider data_wp_validate_site_data
		 */
		public function test_wp_validate_site_data( $data, $expected_errors ) {
			$result = new WP_Error();
			wp_validate_site_data( $result, $data );

			if ( empty( $expected_errors ) ) {
				$this->assertEmpty( $result->errors );
			} else {
				$this->assertSameSets( $expected_errors, array_keys( $result->errors ) );
			}
		}

		public function data_wp_validate_site_data() {
			$date = current_time( 'mysql', true );

			return array(
				array(
					array(
						'domain'       => 'example-site.com',
						'path'         => '/',
						'network_id'   => 1,
						'registered'   => $date,
						'last_updated' => $date,
					),
					array(),
				),
				array(
					array(
						'path'         => '/',
						'network_id'   => 1,
						'registered'   => $date,
						'last_updated' => $date,
					),
					array( 'site_empty_domain' ),
				),
				array(
					array(
						'domain'       => 'example-site.com',
						'network_id'   => 1,
						'registered'   => $date,
						'last_updated' => $date,
					),
					array( 'site_empty_path' ),
				),
				array(
					array(
						'domain'       => 'example-site.com',
						'path'         => '/',
						'registered'   => $date,
						'last_updated' => $date,
					),
					array( 'site_empty_network_id' ),
				),
				array(
					array(
						'domain'       => get_site()->domain,
						'path'         => get_site()->path,
						'network_id'   => get_site()->network_id,
						'registered'   => $date,
						'last_updated' => $date,
					),
					array( 'site_taken' ),
				),
				array(
					array(
						'domain'       => 'valid-domain.com',
						'path'         => '/valid-path/',
						'network_id'   => 1,
						'registered'   => '',
						'last_updated' => $date,
					),
					array( 'site_empty_registered' ),
				),
				array(
					array(
						'domain'       => 'valid-domain.com',
						'path'         => '/valid-path/',
						'network_id'   => 1,
						'registered'   => $date,
						'last_updated' => '',
					),
					array( 'site_empty_last_updated' ),
				),
				array(
					array(
						'domain'       => 'valid-domain.com',
						'path'         => '/valid-path/',
						'network_id'   => 1,
						'registered'   => '2000-13-32 25:25:61',
						'last_updated' => $date,
					),
					array( 'site_invalid_registered' ),
				),
				array(
					array(
						'domain'       => 'valid-domain.com',
						'path'         => '/valid-path/',
						'network_id'   => 1,
						'registered'   => $date,
						'last_updated' => '2000-13-32 25:25:61',
					),
					array( 'site_invalid_last_updated' ),
				),
				array(
					array(
						'domain'       => 'valid-domain.com',
						'path'         => '/valid-path/',
						'network_id'   => 1,
						'registered'   => '0000-00-00 00:00:00',
						'last_updated' => $date,
					),
					array(),
				),
				array(
					array(
						'domain'       => 'valid-domain.com',
						'path'         => '/valid-path/',
						'network_id'   => 1,
						'registered'   => $date,
						'last_updated' => '0000-00-00 00:00:00',
					),
					array(),
				),
			);
		}

		/**
		 * @ticket 40364
		 */
		public function test_site_dates_are_gmt() {
			$first_date = current_time( 'mysql', true );

			remove_action( 'wp_initialize_site', 'wp_initialize_site', 10 );
			$site_id = wp_insert_site(
				array(
					'domain'     => 'valid-domain.com',
					'path'       => '/valid-path/',
					'network_id' => 1,
				)
			);
			$this->assertIsInt( $site_id );

			$site = get_site( $site_id );
			$this->assertEqualsWithDelta( strtotime( $first_date ), strtotime( $site->registered ), 2, 'The dates should be equal' );
			$this->assertEqualsWithDelta( strtotime( $first_date ), strtotime( $site->last_updated ), 2, 'The dates should be equal' );

			$second_date = current_time( 'mysql', true );
			$site_id     = wp_update_site( $site_id, array() );
			$this->assertIsInt( $site_id );

			$site = get_site( $site_id );
			$this->assertEqualsWithDelta( strtotime( $first_date ), strtotime( $site->registered ), 2, 'The dates should be equal' );
			$this->assertEqualsWithDelta( strtotime( $second_date ), strtotime( $site->last_updated ), 2, 'The dates should be equal' );
		}

		/**
		 * @ticket 40364
		 */
		public function test_wp_delete_site_cleans_cache() {
			$site_id = self::factory()->blog->create();

			get_site( $site_id );

			wp_delete_site( $site_id );

			$this->assertNull( get_site( $site_id ) );
		}

		/**
		 * @ticket 40364
		 */
		public function test_wp_update_site_cleans_old_cache_on_domain_change() {
			$old_domain = 'old.wordpress.org';
			$new_domain = 'new.wordpress.org';

			$site = self::factory()->blog->create_and_get(
				array(
					'domain' => $old_domain,
					'path'   => '/',
				)
			);

			// Populate the caches.
			get_blog_details(
				array(
					'domain' => $old_domain,
					'path'   => '/',
				)
			);
			get_blog_id_from_url( $old_domain, '/' );
			get_blog_details(
				array(
					'domain' => $new_domain,
					'path'   => '/',
				)
			);
			get_blog_id_from_url( $new_domain, '/' );

			wp_update_site(
				$site->id,
				array(
					'domain' => $new_domain,
				)
			);

			$domain_path_key_old = md5( $old_domain . '/' );
			$domain_path_key_new = md5( $new_domain . '/' );

			// Ensure all respective cache values are empty.
			$result = array(
				wp_cache_get( $domain_path_key_old, 'blog-lookup' ),
				wp_cache_get( $domain_path_key_old, 'blog-id-cache' ),
				wp_cache_get( 'current_blog_' . $old_domain, 'site-options' ),
				wp_cache_get( 'current_blog_' . $old_domain . '/', 'site-options' ),
				wp_cache_get( $domain_path_key_new, 'blog-lookup' ),
				wp_cache_get( $domain_path_key_new, 'blog-id-cache' ),
				wp_cache_get( 'current_blog_' . $new_domain, 'site-options' ),
				wp_cache_get( 'current_blog_' . $new_domain . '/', 'site-options' ),
			);

			$this->assertEmpty( array_filter( $result ) );
		}

		/**
		 * @ticket 40364
		 */
		public function test_wp_update_site_cleans_old_cache_on_path_change() {
			$old_path = '/foo/';
			$new_path = '/bar/';

			$site = self::factory()->blog->create_and_get(
				array(
					'domain' => 'test.wordpress.org',
					'path'   => $old_path,
				)
			);

			// Populate the caches.
			get_blog_details(
				array(
					'domain' => 'test.wordpress.org',
					'path'   => $old_path,
				)
			);
			get_blog_id_from_url( 'test.wordpress.org', $old_path );
			get_blog_details(
				array(
					'domain' => 'test.wordpress.org',
					'path'   => $new_path,
				)
			);
			get_blog_id_from_url( 'test.wordpress.org', $new_path );

			wp_update_site(
				$site->id,
				array(
					'path' => $new_path,
				)
			);

			$domain_path_key_old = md5( 'test.wordpress.org' . $old_path );
			$domain_path_key_new = md5( 'test.wordpress.org' . $new_path );

			// Ensure all respective cache values are empty.
			$result = array(
				wp_cache_get( $domain_path_key_old, 'blog-lookup' ),
				wp_cache_get( $domain_path_key_old, 'blog-id-cache' ),
				wp_cache_get( 'current_blog_test.wordpress.org' . $old_path, 'site-options' ),
				wp_cache_get( $domain_path_key_new, 'blog-lookup' ),
				wp_cache_get( $domain_path_key_new, 'blog-id-cache' ),
				wp_cache_get( 'current_blog_test.wordpress.org' . $new_path, 'site-options' ),
			);

			$this->assertEmpty( array_filter( $result ) );
		}

		/**
		 * @ticket 40364
		 * @dataProvider data_site_status_hook_triggers
		 */
		public function test_site_status_hook_triggers( $insert_site_data, $expected_insert_hooks, $update_site_data, $expected_update_hooks ) {
			// First: Insert a site.
			$this->listen_to_site_status_hooks();

			$site_data = array_merge(
				array(
					'domain' => 'example-site.com',
					'path'   => '/',
				),
				$insert_site_data
			);

			$site_id = wp_insert_site( $site_data );

			$insert_expected = array_fill_keys( $expected_insert_hooks, $site_id );
			$insert_result   = $this->get_listen_to_site_status_hooks_result();

			// Second: Update that site.
			$this->listen_to_site_status_hooks();

			wp_update_site( $site_id, $update_site_data );

			$update_expected = array_fill_keys( $expected_update_hooks, $site_id );
			$update_result   = $this->get_listen_to_site_status_hooks_result();

			// Check both insert and update results.
			$this->assertSameSetsWithIndex( $insert_expected, $insert_result );
			$this->assertSameSetsWithIndex( $update_expected, $update_result );
		}

		public function data_site_status_hook_triggers() {
			return array(
				array(
					array(
						'public'   => 1,
						'archived' => 1,
						'mature'   => 1,
						'spam'     => 1,
						'deleted'  => 1,
					),
					array(
						'archive_blog',
						'mature_blog',
						'make_spam_blog',
						'make_delete_blog',
					),
					array(
						'public'   => 0,
						'archived' => 0,
						'mature'   => 0,
						'spam'     => 0,
						'deleted'  => 0,
					),
					array(
						'update_blog_public',
						'unarchive_blog',
						'unmature_blog',
						'make_ham_blog',
						'make_undelete_blog',
					),
				),
				array(
					array(
						'public'   => 0,
						'archived' => 0,
						'mature'   => 0,
						'spam'     => 0,
						'deleted'  => 0,
					),
					array(
						'update_blog_public',
					),
					array(
						'public'   => 1,
						'archived' => 1,
						'mature'   => 1,
						'spam'     => 1,
						'deleted'  => 1,
					),
					array(
						'update_blog_public',
						'archive_blog',
						'mature_blog',
						'make_spam_blog',
						'make_delete_blog',
					),
				),
				array(
					array(
						'public'   => 0,
						'archived' => 0,
						'mature'   => 1,
						'spam'     => 1,
						'deleted'  => 1,
					),
					array(
						'update_blog_public',
						'mature_blog',
						'make_spam_blog',
						'make_delete_blog',
					),
					array(
						'public'   => 0,
						'archived' => 1,
						'mature'   => 1,
						'spam'     => 1,
						'deleted'  => 0,
					),
					array(
						'archive_blog',
						'make_undelete_blog',
					),
				),
			);
		}

		private function listen_to_site_status_hooks() {
			$this->site_status_hooks = array();

			$hooknames = array(
				'make_spam_blog',
				'make_ham_blog',
				'mature_blog',
				'unmature_blog',
				'archive_blog',
				'unarchive_blog',
				'make_delete_blog',
				'make_undelete_blog',
				'update_blog_public',
			);

			foreach ( $hooknames as $hookname ) {
				add_action( $hookname, array( $this, 'action_site_status_hook' ), 10, 1 );
			}
		}

		private function get_listen_to_site_status_hooks_result() {
			$hooknames = array(
				'make_spam_blog',
				'make_ham_blog',
				'mature_blog',
				'unmature_blog',
				'archive_blog',
				'unarchive_blog',
				'make_delete_blog',
				'make_undelete_blog',
				'update_blog_public',
			);

			foreach ( $hooknames as $hookname ) {
				remove_action( $hookname, array( $this, 'action_site_status_hook' ), 10 );
			}

			return $this->site_status_hooks;
		}

		public function action_site_status_hook( $site_id ) {
			$this->site_status_hooks[ current_action() ] = $site_id;
		}

		/**
		 * @ticket 41333
		 * @dataProvider data_wp_initialize_site
		 */
		public function test_wp_initialize_site( $args, $expected_options, $expected_meta ) {
			$result = wp_initialize_site( self::$uninitialized_site_id, $args );

			switch_to_blog( self::$uninitialized_site_id );

			$options = array();
			foreach ( $expected_options as $option => $value ) {
				$options[ $option ] = get_option( $option );
			}

			$meta = array();
			foreach ( $expected_meta as $meta_key => $value ) {
				$meta[ $meta_key ] = get_site_meta( self::$uninitialized_site_id, $meta_key, true );
			}

			restore_current_blog();

			$initialized = wp_is_site_initialized( self::$uninitialized_site_id );

			wp_uninitialize_site( self::$uninitialized_site_id );

			$this->assertTrue( $result );
			$this->assertTrue( $initialized );
			$this->assertSame( $expected_options, $options );
			$this->assertSame( $expected_meta, $meta );
		}

		public function data_wp_initialize_site() {
			return array(
				array(
					array(),
					array(
						'home'        => 'http://uninitialized.org',
						'siteurl'     => 'http://uninitialized.org',
						'admin_email' => '',
						'blog_public' => '1',
					),
					array(),
				),
				array(
					array(
						'options' => array(
							'home'    => 'https://uninitialized.org',
							'siteurl' => 'https://uninitialized.org',
							'key'     => 'value',
						),
						'meta'    => array(
							'key1' => 'value1',
							'key2' => 'value2',
						),
					),
					array(
						'home'    => 'https://uninitialized.org',
						'siteurl' => 'https://uninitialized.org',
						'key'     => 'value',
					),
					array(
						'key1' => 'value1',
						'key2' => 'value2',
						'key3' => '',
					),
				),
				array(
					array(
						'title'   => 'My New Site',
						'options' => array(
							'blogdescription' => 'Just My New Site',
						),
					),
					array(
						'blogname'        => 'My New Site',
						'blogdescription' => 'Just My New Site',
					),
					array(),
				),
			);
		}

		/**
		 * @ticket 41333
		 */
		public function test_wp_initialize_site_user_roles() {
			global $wpdb;

			$result = wp_initialize_site( self::$uninitialized_site_id, array() );

			switch_to_blog( self::$uninitialized_site_id );
			$table_prefix = $wpdb->get_blog_prefix( self::$uninitialized_site_id );
			$roles        = get_option( $table_prefix . 'user_roles' );
			restore_current_blog();

			wp_uninitialize_site( self::$uninitialized_site_id );

			$this->assertTrue( $result );
			$this->assertSameSets(
				array(
					'administrator',
					'editor',
					'author',
					'contributor',
					'subscriber',
				),
				array_keys( $roles )
			);
		}

		/**
		 * @ticket 41333
		 */
		public function test_wp_initialize_site_user_is_admin() {
			$result = wp_initialize_site( self::$uninitialized_site_id, array( 'user_id' => 1 ) );

			switch_to_blog( self::$uninitialized_site_id );
			$user_is_admin = user_can( 1, 'manage_options' );
			$admin_email   = get_option( 'admin_email' );
			restore_current_blog();

			wp_uninitialize_site( self::$uninitialized_site_id );

			$this->assertTrue( $result );
			$this->assertTrue( $user_is_admin );
			$this->assertSame( get_userdata( 1 )->user_email, $admin_email );
		}

		/**
		 * @ticket 41333
		 */
		public function test_wp_initialize_site_args_filter() {
			add_filter( 'wp_initialize_site_args', array( $this, 'filter_wp_initialize_site_args' ), 10, 3 );
			$result = wp_initialize_site( self::$uninitialized_site_id, array( 'title' => 'My Site' ) );

			switch_to_blog( self::$uninitialized_site_id );
			$site_title = get_option( 'blogname' );
			restore_current_blog();

			wp_uninitialize_site( self::$uninitialized_site_id );

			$this->assertSame(
				sprintf( 'My Site %1$d in Network %2$d', self::$uninitialized_site_id, get_site( self::$uninitialized_site_id )->network_id ),
				$site_title
			);
		}

		public function filter_wp_initialize_site_args( $args, $site, $network ) {
			$args['title'] = sprintf( 'My Site %1$d in Network %2$d', $site->id, $network->id );

			return $args;
		}

		/**
		 * @ticket 41333
		 */
		public function test_wp_initialize_site_empty_id() {
			$result = wp_initialize_site( 0 );
			$this->assertWPError( $result );
			$this->assertSame( 'site_empty_id', $result->get_error_code() );
		}

		/**
		 * @ticket 41333
		 */
		public function test_wp_initialize_site_invalid_id() {
			$result = wp_initialize_site( 123 );
			$this->assertWPError( $result );
			$this->assertSame( 'site_invalid_id', $result->get_error_code() );
		}

		/**
		 * @ticket 41333
		 */
		public function test_wp_initialize_site_already_initialized() {
			$result = wp_initialize_site( get_current_blog_id() );
			$this->assertWPError( $result );
			$this->assertSame( 'site_already_initialized', $result->get_error_code() );
		}

		/**
		 * @ticket 41333
		 */
		public function test_wp_uninitialize_site() {
			$site_id = self::factory()->blog->create();

			$result = wp_uninitialize_site( $site_id );
			$this->assertTrue( $result );
			$this->assertFalse( wp_is_site_initialized( $site_id ) );
		}

		/**
		 * @ticket 41333
		 */
		public function test_wp_uninitialize_site_empty_id() {
			$result = wp_uninitialize_site( 0 );
			$this->assertWPError( $result );
			$this->assertSame( 'site_empty_id', $result->get_error_code() );
		}

		/**
		 * @ticket 41333
		 */
		public function test_wp_uninitialize_site_invalid_id() {
			$result = wp_uninitialize_site( 123 );
			$this->assertWPError( $result );
			$this->assertSame( 'site_invalid_id', $result->get_error_code() );
		}

		/**
		 * @ticket 41333
		 */
		public function test_wp_uninitialize_site_already_uninitialized() {
			$result = wp_uninitialize_site( self::$uninitialized_site_id );
			$this->assertWPError( $result );
			$this->assertSame( 'site_already_uninitialized', $result->get_error_code() );
		}

		/**
		 * @ticket 41333
		 */
		public function test_wp_is_site_initialized() {
			$this->assertTrue( wp_is_site_initialized( get_current_blog_id() ) );
			$this->assertFalse( wp_is_site_initialized( self::$uninitialized_site_id ) );
		}

		/**
		 * @ticket 41333
		 */
		public function test_wp_is_site_initialized_prefilter() {
			add_filter( 'pre_wp_is_site_initialized', '__return_false' );
			$this->assertFalse( wp_is_site_initialized( get_current_blog_id() ) );

			add_filter( 'pre_wp_is_site_initialized', '__return_true' );
			$this->assertTrue( wp_is_site_initialized( self::$uninitialized_site_id ) );
		}

		/**
		 * @ticket 41333
		 */
		public function test_wp_insert_site_forwards_args_to_wp_initialize_site() {
			$args = array(
				'user_id' => 1,
				'title'   => 'My Site',
				'options' => array( 'option1' => 'value1' ),
				'meta'    => array( 'meta1' => 'value1' ),
			);

			add_filter( 'wp_initialize_site_args', array( $this, 'filter_wp_initialize_site_args_catch_args' ) );
			$site_id = wp_insert_site(
				array_merge(
					array(
						'domain' => 'testsite.org',
						'path'   => '/',
					),
					$args
				)
			);

			$passed_args                   = $this->wp_initialize_site_args;
			$this->wp_initialize_site_args = null;

			$this->assertSameSetsWithIndex( $args, $passed_args );
		}

		public function filter_wp_initialize_site_args_catch_args( $args ) {
			$this->wp_initialize_site_args = $args;

			return $args;
		}

		/**
		 * @ticket 46125
		 */
		public function test_wpmu_create_blog_cache_cleanup_backward_compatible() {
			add_action( 'populate_options', array( $this, 'populate_options_callback' ) );

			$blog_id = wpmu_create_blog( 'testsite1.example.org', '/test', 'test', 1, array( 'public' => 1 ), 2 );

			/*
			 * Should not hit blog_details cache initialized in $this->populate_options_callback triggered during
			 * populate_options callback's call of get_blog_details.
			 */
			$this->assertSame( 'http://testsite1.example.org/test', get_blog_details( $blog_id )->siteurl );
			$this->assertSame( 'http://testsite1.example.org/test', get_site( $blog_id )->siteurl );

			remove_action( 'populate_options', array( $this, 'populate_options_callback' ) );
		}

		/**
		 * Populate options callback to warm cache for blog-details / site-details cache group
		 */
		public function populate_options_callback() {
			// Cache blog details.
			$blog_id = get_current_blog_id();
			get_blog_details( $blog_id );
			get_site( $blog_id )->siteurl;
			// Set siteurl.
			update_option( 'siteurl', 'http://testsite1.example.org/test' );
		}

		/**
		 * Tests whether all expected meta are provided in deprecated `wpmu_new_blog` action.
		 *
		 * @dataProvider data_wpmu_new_blog_action_backward_commpatible
		 *
		 * @ticket 46351
		 */
		public function test_wpmu_new_blog_action_backward_compatible( $meta, $expected_meta ) {
			// We are testing deprecated hook. Register it to expected deprecated notices.
			$this->setExpectedDeprecated( 'wpmu_new_blog' );
			add_action( 'wpmu_new_blog', array( $this, 'wpmu_new_blog_callback' ), 10, 6 );

			wpmu_create_blog( 'testsite1.example.org', '/new-blog/', 'New Blog', get_current_user_id(), $meta, 1 );

			$this->assertSameSetsWithIndex( $expected_meta, $this->wp_initialize_site_meta );

			$this->wp_initialize_site_meta = array();
		}

		/**
		 * @ticket 42251
		 */
		public function test_get_site_not_found_cache() {
			$new_site_id = $this->_get_next_site_id();
			$this->assertNull( get_site( $new_site_id ) );

			$num_queries = get_num_queries();
			$this->assertNull( get_site( $new_site_id ) );
			$this->assertSame( $num_queries, get_num_queries() );
		}

		/**
		 * @ticket 42251
		 */
		public function test_get_site_not_found_cache_clear() {
			$new_site_id = $this->_get_next_site_id();
			$this->assertNull( get_site( $new_site_id ) );

			$new_site = self::factory()->blog->create_and_get();

			// Double-check we got the ID of the new site correct.
			$this->assertEquals( $new_site_id, $new_site->blog_id );

			// Verify that if we fetch the site now, it's no longer false.
			$fetched_site = get_site( $new_site_id );
			$this->assertInstanceOf( 'WP_Site', $fetched_site );
			$this->assertEquals( $new_site_id, $fetched_site->blog_id );
		}

		/**
		 * Gets the ID of the next site that will get inserted
		 * @return int
		 */
		protected function _get_next_site_id() {
			global $wpdb;
			// Create an entry.
			static::factory()->blog->create();
			// Get the ID after it.
			return (int) $wpdb->get_var( 'SELECT blog_id FROM ' . $wpdb->blogs . ' ORDER BY blog_ID DESC LIMIT 1' ) + 1;
		}

		/**
		 * Capture the $meta value passed to the wpmu_new_blog action and compare it.
		 */
		public function wpmu_new_blog_callback( $blog_id, $user_id, $domain, $path, $network_id, $meta ) {
			$this->wp_initialize_site_meta = $meta;
		}

		public function data_wpmu_new_blog_action_backward_commpatible() {
			return array(
				'default values' => array(
					array(),
					array(
						'public' => 0, // `public` is one of the default metas in `wpmu_create_blog()' function prior to WordPress 5.1.0.
						'WPLANG' => 'en_US', // WPLANG is another default meta in `wpmu_create_blog()` function prior to WordPress 5.1.0.
					),
				),
				'public site'    => array(
					array(
						'public' => 1,
					),
					array(
						'public' => 1,
						'WPLANG' => 'en_US',
					),
				),
				'allowed_keys'   => array(
					array(
						'public'   => -1,
						'archived' => 0,
						'mature'   => 0,
						'spam'     => 0,
						'deleted'  => 0,
						'lang_id'  => 11,

					),
					array(
						'public'   => -1,
						'WPLANG'   => 'en_US',
						'archived' => 0,
						'mature'   => 0,
						'spam'     => 0,
						'deleted'  => 0,
						'lang_id'  => 11,
					),
				),
				'extra meta key' => array(
					array(
						'foo' => 'bar',
					),
					array(
						'public' => 0,
						'foo'    => 'bar',
						'WPLANG' => 'en_US',
					),
				),
			);
		}
	}

endif;