Make sure WP is multisite before loading the Blogs endpoint.

* This prevents a DB Error when BP Blogs component is active on a regular WP
* Update the Blogs compoment endpoint unit tests to reflect the change.

Props @renatonascalves

bp-rest.php

@@ -86,7 +86,7 @@ function bp_rest() {
 		$controller->register_routes();
 	}
 
-	if ( bp_is_active( 'blogs' ) ) {
+	if ( is_multisite() && bp_is_active( 'blogs' ) ) {
 		require_once dirname( __FILE__ ) . '/includes/bp-blogs/classes/class-bp-rest-blogs-endpoint.php';
 		$controller = new BP_REST_Blogs_Endpoint();
 		$controller->register_routes();

includes/bp-activity/classes/class-bp-rest-activity-endpoint.php

@@ -1149,7 +1149,7 @@ protected function prepare_links( $activity ) {
 		}
 
 		// Embed Blog.
-		if ( bp_is_active( 'blogs' ) && buddypress()->blogs->id === $activity->component && ! empty( $activity->item_id ) ) {
+		if ( is_multisite() && bp_is_active( 'blogs' ) && buddypress()->blogs->id === $activity->component && ! empty( $activity->item_id ) ) {
 			$links['blog'] = array(
 				'embeddable' => true,
 				'href'       => rest_url(

includes/bp-notifications/classes/class-bp-rest-notifications-endpoint.php

@@ -692,7 +692,7 @@ protected function prepare_links( $notification ) {
 		}
 
 		// Embed Blog.
-		if ( bp_is_active( 'blogs' ) && buddypress()->blogs->id === $notification->component_name && ! empty( $notification->item_id ) ) {
+		if ( is_multisite() && bp_is_active( 'blogs' ) && buddypress()->blogs->id === $notification->component_name && ! empty( $notification->item_id ) ) {
 			$links['blog'] = array(
 				'embeddable' => true,
 				'href'       => rest_url(

phpunit.xml.dist

@@ -9,6 +9,8 @@
 	<testsuites>
 		<testsuite name="unit">
 			<directory prefix="test-" suffix=".php">./tests/testcases/</directory>
+			<exclude>tests/testcases/blogs/test-controller.php</exclude>
+			<exclude>tests/testcases/attachments/test-blog-avatar-controller.php</exclude>
 		</testsuite>
 	</testsuites>
 </phpunit>