diff --git a/core/modules/taxonomy/src/Tests/Plugin/Condition/VocabularyConditionTest.php b/core/modules/taxonomy/src/Tests/Plugin/Condition/VocabularyConditionTest.php
index f724b9c..e01c1c6 100644
--- a/core/modules/taxonomy/src/Tests/Plugin/Condition/VocabularyConditionTest.php
+++ b/core/modules/taxonomy/src/Tests/Plugin/Condition/VocabularyConditionTest.php
@@ -13,15 +13,21 @@
 use Drupal\system\Tests\Entity\EntityUnitTestBase;
 use Drupal\taxonomy\Entity\Term;
 use Drupal\taxonomy\Entity\Vocabulary;
+use Drupal\taxonomy\TermInterface;
 use Drupal\taxonomy\VocabularyInterface;
 
 /**
- * Tests the vocabulary condition test.
+ * Tests the vocabulary condition.
  *
  * @group taxonomy
  */
 class VocabularyConditionTest extends EntityUnitTestBase {
 
+  /**
+   * Modules to enable.
+   *
+   * @var array
+   */
   public static $modules = array('taxonomy');
 
   /**
@@ -94,7 +100,10 @@ public function testConditions() {
   }
 
   /**
-   * Returns a new vocabulary with random properties.
+   * Creates and saves a new vocabulary with random properties.
+   *
+   * @return VocabularyInterface
+   *   The created vocabulary.
    */
   protected function createVocabulary() {
     // Create a vocabulary.
@@ -109,7 +118,13 @@ protected function createVocabulary() {
   }
 
   /**
-   * Returns a new term with random properties in vocabulary $vid.
+   * Creates and saves a new term with random properties in a given vocabulary.
+   *
+   * @param VocabularyInterface $vocabulary
+   *   The vocabulary which the created term should belong to.
+   *
+   * @return TermInterface
+   *   The created term.
    */
   protected function createTerm(VocabularyInterface $vocabulary) {
     $term = Term::create(array(