diff --git a/tests/phpunit/tests/link/getDashboardUrl.php b/tests/phpunit/tests/link/getDashboardUrl.php
index 7189b598e3..1b70e13a70 100644
--- a/tests/phpunit/tests/link/getDashboardUrl.php
+++ b/tests/phpunit/tests/link/getDashboardUrl.php
@@ -68,7 +68,7 @@ class Tests_Link_GetDashboardUrl extends WP_UnitTestCase {
 		remove_user_from_blog( self::$user_id, $site_id );
 		add_user_to_blog( get_current_blog_id(), self::$user_id, 'administrator' );
 
-		wpmu_delete_blog( $site_id, true );
+		wp_delete_site( $site_id );
 
 		$this->assertEquals( $expected, $result );
 	}
diff --git a/tests/phpunit/tests/multisite/bootstrap.php b/tests/phpunit/tests/multisite/bootstrap.php
index ae71746e63..99d514e965 100644
--- a/tests/phpunit/tests/multisite/bootstrap.php
+++ b/tests/phpunit/tests/multisite/bootstrap.php
@@ -103,7 +103,7 @@ if ( is_multisite() ) :
 			global $wpdb;
 
 			foreach ( self::$site_ids as $id ) {
-				wpmu_delete_blog( $id, true );
+				wp_delete_site( $id );
 			}
 
 			foreach ( self::$network_ids as $id ) {
diff --git a/tests/phpunit/tests/multisite/getBlogDetails.php b/tests/phpunit/tests/multisite/getBlogDetails.php
index 03d33900d8..1ed6b89a83 100644
--- a/tests/phpunit/tests/multisite/getBlogDetails.php
+++ b/tests/phpunit/tests/multisite/getBlogDetails.php
@@ -35,7 +35,7 @@ if ( is_multisite() ) :
 
 		public static function wpTearDownAfterClass() {
 			foreach ( self::$site_ids as $id ) {
-				wpmu_delete_blog( $id, true );
+				wp_delete_site( $id );
 			}
 
 			wp_update_network_site_counts();
diff --git a/tests/phpunit/tests/multisite/getIdFromBlogname.php b/tests/phpunit/tests/multisite/getIdFromBlogname.php
index 063518b720..ded3cc6ff9 100644
--- a/tests/phpunit/tests/multisite/getIdFromBlogname.php
+++ b/tests/phpunit/tests/multisite/getIdFromBlogname.php
@@ -72,7 +72,7 @@ if ( is_multisite() ) :
 			global $wpdb;
 
 			foreach ( self::$site_ids as $id ) {
-				wpmu_delete_blog( $id, true );
+				wp_delete_site( $id );
 			}
 
 			foreach ( self::$network_ids as $id ) {
diff --git a/tests/phpunit/tests/multisite/getMainSiteId.php b/tests/phpunit/tests/multisite/getMainSiteId.php
index 61435eb353..56fe53f957 100644
--- a/tests/phpunit/tests/multisite/getMainSiteId.php
+++ b/tests/phpunit/tests/multisite/getMainSiteId.php
@@ -54,7 +54,7 @@ if ( is_multisite() ) :
 
 		public static function wpTearDownAfterClass() {
 			foreach ( self::$site_ids as $id ) {
-				wpmu_delete_blog( $id, true );
+				wp_delete_site( $id );
 			}
 
 			global $wpdb;
diff --git a/tests/phpunit/tests/multisite/getSite.php b/tests/phpunit/tests/multisite/getSite.php
index 8f5759445a..aeaa9ddf2e 100644
--- a/tests/phpunit/tests/multisite/getSite.php
+++ b/tests/phpunit/tests/multisite/getSite.php
@@ -34,7 +34,7 @@ if ( is_multisite() ) :
 
 		public static function wpTearDownAfterClass() {
 			foreach ( self::$site_ids as $id ) {
-				wpmu_delete_blog( $id, true );
+				wp_delete_site( $id );
 			}
 
 			wp_update_network_site_counts();
diff --git a/tests/phpunit/tests/multisite/network.php b/tests/phpunit/tests/multisite/network.php
index f6d0984a1e..9d44116ee8 100644
--- a/tests/phpunit/tests/multisite/network.php
+++ b/tests/phpunit/tests/multisite/network.php
@@ -63,7 +63,7 @@ if ( is_multisite() ) :
 			global $wpdb;
 
 			foreach ( self::$different_site_ids as $id ) {
-				wpmu_delete_blog( $id, true );
+				wp_delete_site( $id );
 			}
 
 			$wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->sitemeta} WHERE site_id = %d", self::$different_network_id ) );
@@ -155,7 +155,7 @@ if ( is_multisite() ) :
 			$actual   = (int) get_blog_count(); // Count only updated when cron runs, so should be unchanged.
 
 			foreach ( $site_ids as $site_id ) {
-				wpmu_delete_blog( $site_id, true );
+				wp_delete_site( $site_id );
 			}
 			wp_update_network_counts();
 
@@ -175,7 +175,7 @@ if ( is_multisite() ) :
 			remove_filter( 'enable_live_network_counts', '__return_false' );
 
 			foreach ( $site_ids as $site_id ) {
-				wpmu_delete_blog( $site_id, true );
+				wp_delete_site( $site_id );
 			}
 			wp_update_network_counts();
 
@@ -195,7 +195,7 @@ if ( is_multisite() ) :
 			remove_filter( 'enable_live_network_counts', '__return_true' );
 
 			foreach ( $site_ids as $site_id ) {
-				wpmu_delete_blog( $site_id, true );
+				wp_delete_site( $site_id );
 			}
 			wp_update_network_counts();
 
@@ -590,13 +590,7 @@ if ( is_multisite() ) :
 		public function test_wpmu_create_blog_updates_correct_network_site_count() {
 			$original_count = get_blog_count( self::$different_network_id );
 
-			$site_id = self::factory()->blog->create(
-				array(
-					'domain'  => 'example.org',
-					'path'    => '/',
-					'site_id' => self::$different_network_id,
-				)
-			);
+			$site_id = wpmu_create_blog( 'example.org', '/', '', 1, array(), self::$different_network_id );
 
 			$result = get_blog_count( self::$different_network_id );
 
diff --git a/tests/phpunit/tests/multisite/site.php b/tests/phpunit/tests/multisite/site.php
index 6e94fe28b3..c6cb17fa4c 100644
--- a/tests/phpunit/tests/multisite/site.php
+++ b/tests/phpunit/tests/multisite/site.php
@@ -79,7 +79,7 @@ if ( is_multisite() ) :
 			add_action( 'wp_uninitialize_site', 'wp_uninitialize_site', 10, 1 );
 
 			foreach ( self::$site_ids as $id ) {
-				wpmu_delete_blog( $id, true );
+				wp_delete_site( $id );
 			}
 
 			foreach ( self::$network_ids as $id ) {
diff --git a/tests/phpunit/tests/multisite/siteDetails.php b/tests/phpunit/tests/multisite/siteDetails.php
index 79160ee131..477f8b5ad9 100644
--- a/tests/phpunit/tests/multisite/siteDetails.php
+++ b/tests/phpunit/tests/multisite/siteDetails.php
@@ -139,7 +139,7 @@ if ( is_multisite() ) :
 
 			$cached_details = wp_cache_get( $site->id, 'site-details' );
 
-			wpmu_delete_blog( $id, true );
+			wp_delete_site( $id );
 			wp_update_network_site_counts();
 
 			$this->assertNotFalse( $cached_details );
diff --git a/tests/phpunit/tests/multisite/siteMeta.php b/tests/phpunit/tests/multisite/siteMeta.php
index bf272b2c0f..3eee11eb97 100644
--- a/tests/phpunit/tests/multisite/siteMeta.php
+++ b/tests/phpunit/tests/multisite/siteMeta.php
@@ -41,8 +41,8 @@ if ( is_multisite() ) :
 				delete_network_option( get_main_network_id(), 'site_meta_supported' );
 			}
 
-			wpmu_delete_blog( self::$site_id, true );
-			wpmu_delete_blog( self::$site_id2, true );
+			wp_delete_site( self::$site_id );
+			wp_delete_site( self::$site_id2 );
 
 			wp_update_network_site_counts();
 		}
@@ -213,7 +213,7 @@ if ( is_multisite() ) :
 			$this->assertSame( 'bar', get_site_meta( $site_id, 'foo', true ) );
 			$this->assertSame( 'bar', get_site_meta( $site_id, 'foo1', true ) );
 
-			wpmu_delete_blog( $site_id, true );
+			wp_delete_site( $site_id );
 
 			$this->assertSame( '', get_site_meta( $site_id, 'foo', true ) );
 			$this->assertSame( '', get_site_meta( $site_id, 'foo1', true ) );
diff --git a/tests/phpunit/tests/multisite/siteQuery.php b/tests/phpunit/tests/multisite/siteQuery.php
index c8bcff2256..2eaeb906b9 100644
--- a/tests/phpunit/tests/multisite/siteQuery.php
+++ b/tests/phpunit/tests/multisite/siteQuery.php
@@ -105,7 +105,7 @@ if ( is_multisite() ) :
 			global $wpdb;
 
 			foreach ( self::$site_ids as $id ) {
-				wpmu_delete_blog( $id, true );
+				wp_delete_site( $id );
 			}
 
 			foreach ( self::$network_ids as $id ) {
diff --git a/tests/phpunit/tests/multisite/wpGetSites.php b/tests/phpunit/tests/multisite/wpGetSites.php
index f42cbb438e..ee718f1129 100644
--- a/tests/phpunit/tests/multisite/wpGetSites.php
+++ b/tests/phpunit/tests/multisite/wpGetSites.php
@@ -43,7 +43,7 @@ if ( is_multisite() ) :
 
 		public static function wpTearDownAfterClass() {
 			foreach ( self::$site_ids as $id ) {
-				wpmu_delete_blog( $id, true );
+				wp_delete_site( $id );
 			}
 
 			wp_update_network_site_counts();
diff --git a/tests/phpunit/tests/multisite/wpInstallDefaults.php b/tests/phpunit/tests/multisite/wpInstallDefaults.php
index d40930d4e2..dad6a99b84 100644
--- a/tests/phpunit/tests/multisite/wpInstallDefaults.php
+++ b/tests/phpunit/tests/multisite/wpInstallDefaults.php
@@ -21,7 +21,8 @@ if ( is_multisite() ) :
 			$first_comment = get_comments();
 
 			restore_current_blog();
-			wpmu_delete_blog( $blog_id, true );
+
+			wp_delete_site( $blog_id );
 
 			$this->assertNotEmpty( $first_page->post_content );
 			$this->assertNotEmpty( $first_comment[0]->comment_content );
@@ -46,7 +47,8 @@ if ( is_multisite() ) :
 			$first_comment = get_comments();
 
 			restore_current_blog();
-			wpmu_delete_blog( $blog_id, true );
+
+			wp_delete_site( $blog_id );
 
 			$this->assertNotEmpty( $first_page->post_content );
 			$this->assertNotEmpty( $first_comment[0]->comment_content );
@@ -71,7 +73,8 @@ if ( is_multisite() ) :
 			$first_comment = get_comments();
 
 			restore_current_blog();
-			wpmu_delete_blog( $blog_id, true );
+
+			wp_delete_site( $blog_id );
 
 			$this->assertEquals( 'Some page content', $first_page->post_content );
 			$this->assertEquals( 'Some comment content', $first_comment[0]->comment_content );
diff --git a/tests/phpunit/tests/multisite/wpMSSitesListTable.php b/tests/phpunit/tests/multisite/wpMSSitesListTable.php
index dffa8d82af..39c9161a30 100644
--- a/tests/phpunit/tests/multisite/wpMSSitesListTable.php
+++ b/tests/phpunit/tests/multisite/wpMSSitesListTable.php
@@ -83,7 +83,7 @@ if ( is_multisite() ) :
 
 		public static function wpTearDownAfterClass() {
 			foreach ( self::$site_ids as $site_id ) {
-				wpmu_delete_blog( $site_id, true );
+				wp_delete_site( $site_id );
 			}
 		}
 
diff --git a/tests/phpunit/tests/multisite/wpmuValidateBlogSignup.php b/tests/phpunit/tests/multisite/wpmuValidateBlogSignup.php
index 892fd521da..a635287b14 100644
--- a/tests/phpunit/tests/multisite/wpmuValidateBlogSignup.php
+++ b/tests/phpunit/tests/multisite/wpmuValidateBlogSignup.php
@@ -47,7 +47,7 @@ if ( is_multisite() ) :
 
 			wpmu_delete_user( self::$existing_user_id );
 
-			wpmu_delete_blog( self::$existing_blog_id, true );
+			wp_delete_site( self::$existing_blog_id );
 		}
 
 		/**
diff --git a/tests/phpunit/tests/rest-api/rest-users-controller.php b/tests/phpunit/tests/rest-api/rest-users-controller.php
index c678ce63bd..6b1bd39854 100644
--- a/tests/phpunit/tests/rest-api/rest-users-controller.php
+++ b/tests/phpunit/tests/rest-api/rest-users-controller.php
@@ -136,7 +136,7 @@ class WP_Test_REST_Users_Controller extends WP_Test_REST_Controller_Testcase {
 		_unregister_post_type( 'r_false_p_false' );
 
 		if ( is_multisite() ) {
-			wpmu_delete_blog( self::$site, true );
+			wp_delete_site( self::$site );
 		}
 
 		// Remove users for pagination tests.
diff --git a/tests/phpunit/tests/user/getActiveBlogForUser.php b/tests/phpunit/tests/user/getActiveBlogForUser.php
index d6e792e26c..c6a04b5ea6 100644
--- a/tests/phpunit/tests/user/getActiveBlogForUser.php
+++ b/tests/phpunit/tests/user/getActiveBlogForUser.php
@@ -51,8 +51,8 @@ if ( is_multisite() ) :
 
 			$result = get_active_blog_for_user( self::$user_id );
 
-			wpmu_delete_blog( $site_id_one, true );
-			wpmu_delete_blog( $site_id_two, true );
+			wp_delete_site( $site_id_one );
+			wp_delete_site( $site_id_two );
 
 			$this->assertEquals( $primary_site_id, $result->id );
 		}
@@ -69,7 +69,7 @@ if ( is_multisite() ) :
 
 			$result = get_active_blog_for_user( self::$user_id );
 
-			wpmu_delete_blog( $primary_site_id, true );
+			wp_delete_site( $primary_site_id );
 
 			$this->assertEquals( $primary_site_id, $result->id );
 		}
@@ -92,7 +92,7 @@ if ( is_multisite() ) :
 
 			$result = get_active_blog_for_user( self::$user_id );
 
-			wpmu_delete_blog( $site_id, true );
+			wp_delete_site( $site_id );
 
 			$this->assertEquals( $current_site_id, $result->id );
 		}
diff --git a/tests/phpunit/tests/user/multisite.php b/tests/phpunit/tests/user/multisite.php
index 01c7b7d096..9e31661253 100644
--- a/tests/phpunit/tests/user/multisite.php
+++ b/tests/phpunit/tests/user/multisite.php
@@ -389,7 +389,7 @@ if ( is_multisite() ) :
 			$user = get_user_by( 'id', $user_id );
 			restore_current_blog();
 
-			wpmu_delete_blog( $site_id );
+			wp_delete_site( $site_id );
 			wpmu_delete_user( $user_id );
 
 			$this->assertContains( 'subscriber', $user->roles );
@@ -402,7 +402,8 @@ if ( is_multisite() ) :
 			$site_id = self::factory()->blog->create();
 
 			$result = add_user_to_blog( 73622, $site_id, 'subscriber' );
-			wpmu_delete_blog( $site_id );
+
+			wp_delete_site( $site_id );
 
 			$this->assertWPError( $result );
 		}