diff --git a/core/modules/field/src/Tests/Boolean/BooleanFieldTest.php b/core/modules/field/src/Tests/Boolean/BooleanFieldTest.php
index c8b1c97..cb8b723 100644
--- a/core/modules/field/src/Tests/Boolean/BooleanFieldTest.php
+++ b/core/modules/field/src/Tests/Boolean/BooleanFieldTest.php
@@ -41,18 +41,25 @@ class BooleanFieldTest extends WebTestBase {
   protected $field;
 
   /**
+   * A user with permission to view and manage entities and content types.
+   *
+   * @var \Drupal\user\UserInterface
+   */
+  protected $webUser;
+
+  /**
    * {@inheritdoc}
    */
   protected function setUp() {
     parent::setUp();
 
-    $this->web_user = $this->drupalCreateUser(array(
+    $this->webUser = $this->drupalCreateUser(array(
       'view test entity',
       'administer entity_test content',
       'administer entity_test form display',
       'administer entity_test fields',
     ));
-    $this->drupalLogin($this->web_user);
+    $this->drupalLogin($this->webUser);
   }
 
   /**
diff --git a/core/modules/field/src/Tests/Email/EmailFieldTest.php b/core/modules/field/src/Tests/Email/EmailFieldTest.php
index 2ce3c46..4598ad8 100644
--- a/core/modules/field/src/Tests/Email/EmailFieldTest.php
+++ b/core/modules/field/src/Tests/Email/EmailFieldTest.php
@@ -38,15 +38,22 @@ class EmailFieldTest extends WebTestBase {
    */
   protected $field;
 
+  /**
+   * A user with permission to view and manage entities and content types.
+   *
+   * @var \Drupal\user\UserInterface
+   */
+  protected $webUser;
+
   protected function setUp() {
     parent::setUp();
 
-    $this->web_user = $this->drupalCreateUser(array(
+    $this->webUser= $this->drupalCreateUser(array(
       'view test entity',
       'administer entity_test content',
       'administer content types',
     ));
-    $this->drupalLogin($this->web_user);
+    $this->drupalLogin($this->webUser);
   }
 
   /**
diff --git a/core/modules/field/src/Tests/FieldImportDeleteUninstallUiTest.php b/core/modules/field/src/Tests/FieldImportDeleteUninstallUiTest.php
index d10b146..eaf74f8 100644
--- a/core/modules/field/src/Tests/FieldImportDeleteUninstallUiTest.php
+++ b/core/modules/field/src/Tests/FieldImportDeleteUninstallUiTest.php
@@ -25,11 +25,18 @@ class FieldImportDeleteUninstallUiTest extends FieldTestBase {
    */
   public static $modules = array('entity_test', 'telephone', 'config', 'filter', 'text');
 
+  /**
+   * A user with permission to synchronize configuration.
+   *
+   * @var \Drupal\user\UserInterface
+   */
+  protected $webUser;
+
   protected function setUp() {
     parent::setUp();
 
-    $this->web_user = $this->drupalCreateUser(array('synchronize configuration'));
-    $this->drupalLogin($this->web_user);
+    $this->webUser = $this->drupalCreateUser(array('synchronize configuration'));
+    $this->drupalLogin($this->webUser);
   }
 
   /**
diff --git a/core/modules/field/src/Tests/reEnableModuleFieldTest.php b/core/modules/field/src/Tests/reEnableModuleFieldTest.php
index 2b8f4c1..fff1d7f 100644
--- a/core/modules/field/src/Tests/reEnableModuleFieldTest.php
+++ b/core/modules/field/src/Tests/reEnableModuleFieldTest.php
@@ -29,12 +29,19 @@ class reEnableModuleFieldTest extends WebTestBase {
     'telephone'
   );
 
+  /**
+   * A user with permission to create and edit own article content.
+   *
+   * @var \Drupal\user\UserInterface
+   */
+  protected $articleCreator;
+
   protected function setUp() {
     parent::setUp();
 
     $this->drupalCreateContentType(array('type' => 'article'));
-    $this->article_creator = $this->drupalCreateUser(array('create article content', 'edit own article content'));
-    $this->drupalLogin($this->article_creator);
+    $this->articleCreator = $this->drupalCreateUser(array('create article content', 'edit own article content'));
+    $this->drupalLogin($this->articleCreator);
   }
 
   /**