diff --git a/core/modules/rest/tests/src/Unit/RestSerializerTest.php b/core/modules/rest/tests/src/Unit/RestSerializerTest.php
index 969539f..8d0b1d0 100644
--- a/core/modules/rest/tests/src/Unit/RestSerializerTest.php
+++ b/core/modules/rest/tests/src/Unit/RestSerializerTest.php
@@ -11,8 +11,7 @@
 use Drupal\Tests\UnitTestCase;
 
 /**
- * Tests the REST export view plugin.
- *
+ * @coversDefaultClass \Drupal\rest\Plugin\views\style\Serializer
  * @group rest
  */
 class RestSerializerTest extends UnitTestCase {
@@ -57,6 +56,8 @@ protected function setUp() {
 
   /**
    * Tests that the symfony serializer receives options from the render() method.
+   *
+   * @covers ::render
    */
   public function testSerializerReceivesOptions() {