diff --git a/tests/phpunit/includes/testcase-xmlrpc.php b/tests/phpunit/includes/testcase-xmlrpc.php
index f529dfa93a..a2341db1c4 100644
--- a/tests/phpunit/includes/testcase-xmlrpc.php
+++ b/tests/phpunit/includes/testcase-xmlrpc.php
@@ -22,7 +22,7 @@ class WP_XMLRPC_UnitTestCase extends WP_UnitTestCase {
 		parent::tearDown();
 	}
 
-	protected function make_user_by_role( $role ) {
+	protected static function make_user_by_role( $role ) {
 		return self::factory()->user->create(
 			array(
 				'user_login' => $role,
diff --git a/tests/phpunit/tests/xmlrpc/wp/newComment.php b/tests/phpunit/tests/xmlrpc/wp/newComment.php
index 82dcc5b9a0..5534099097 100644
--- a/tests/phpunit/tests/xmlrpc/wp/newComment.php
+++ b/tests/phpunit/tests/xmlrpc/wp/newComment.php
@@ -5,16 +5,25 @@
  */
 class Tests_XMLRPC_wp_newComment extends WP_XMLRPC_UnitTestCase {
 
-	function test_valid_comment() {
-		$this->make_user_by_role( 'administrator' );
-		$post = self::factory()->post->create_and_get();
+	/**
+	 * Post object for shared fixture.
+	 *
+	 * @var WP_Post
+	 */
+	public static $post;
 
+	public static function wpSetUpBeforeClass( $factory ) {
+		self::make_user_by_role( 'administrator' );
+		self::$post = $factory->post->create_and_get();
+	}
+
+	function test_valid_comment() {
 		$result = $this->myxmlrpcserver->wp_newComment(
 			array(
 				1,
 				'administrator',
 				'administrator',
-				$post->ID,
+				self::$post->ID,
 				array(
 					'content' => rand_str( 100 ),
 				),
@@ -25,15 +34,12 @@ class Tests_XMLRPC_wp_newComment extends WP_XMLRPC_UnitTestCase {
 	}
 
 	function test_empty_comment() {
-		$this->make_user_by_role( 'administrator' );
-		$post = self::factory()->post->create_and_get();
-
 		$result = $this->myxmlrpcserver->wp_newComment(
 			array(
 				1,
 				'administrator',
 				'administrator',
-				$post->ID,
+				self::$post->ID,
 				array(
 					'content' => '',
 				),
@@ -45,7 +51,6 @@ class Tests_XMLRPC_wp_newComment extends WP_XMLRPC_UnitTestCase {
 	}
 
 	function test_new_comment_post_closed() {
-		$this->make_user_by_role( 'administrator' );
 		$post = self::factory()->post->create_and_get(
 			array(
 				'comment_status' => 'closed',
@@ -71,14 +76,11 @@ class Tests_XMLRPC_wp_newComment extends WP_XMLRPC_UnitTestCase {
 	}
 
 	function test_new_comment_duplicated() {
-		$this->make_user_by_role( 'administrator' );
-		$post = self::factory()->post->create_and_get();
-
 		$comment_args = array(
 			1,
 			'administrator',
 			'administrator',
-			$post->ID,
+			self::$post->ID,
 			array(
 				'content' => rand_str( 100 ),
 			),
@@ -94,5 +96,4 @@ class Tests_XMLRPC_wp_newComment extends WP_XMLRPC_UnitTestCase {
 		$this->assertIXRError( $result );
 		$this->assertSame( 403, $result->code );
 	}
-
 }