Update to drupal 8.0.0-rc1. For more information, see https://www.drupal.org/node/2582663

core/modules/contact/tests/modules/contact_test_views/test_views/views.view.test_contact_link.yml

@@ -58,10 +58,10 @@ display:
             offset: false
             offset_label: Offset
           tags:
-            previous: '‹ previous'
-            next: 'next ›'
-            first: '« first'
-            last: 'last »'
+            previous: '‹ Previous'
+            next: 'Next ›'
+            first: '« First'
+            last: 'Last »'
           quantity: 9
       style:
         type: default
@@ -133,7 +133,7 @@ display:
       contexts:
         - 'languages:language_content'
         - 'languages:language_interface'
-      cacheable: false
+      max-age: 0
   page_1:
     display_plugin: page
     id: page_1
@@ -146,4 +146,4 @@ display:
       contexts:
         - 'languages:language_content'
         - 'languages:language_interface'
-      cacheable: false
+      max-age: 0

core/modules/contact/tests/src/Unit/Plugin/migrate/source/ContactCategoryTest.php

@@ -2,26 +2,27 @@
 
 /**
  * @file
- * Contains \Drupal\Tests\contact\Unit\Plugin\migrate\source\d6\ContactCategoryTest.
+ * Contains \Drupal\Tests\contact\Unit\Plugin\migrate\source\ContactCategoryTest.
  */
 
-namespace Drupal\Tests\contact\Unit\Plugin\migrate\source\d6;
+namespace Drupal\Tests\contact\Unit\Plugin\migrate\source;
 
+use Drupal\contact\Plugin\migrate\source\ContactCategory;
 use Drupal\Tests\migrate\Unit\MigrateSqlSourceTestCase;
 
 /**
- * Tests D6 contact category source plugin.
+ * Tests contact_category source plugin.
  *
  * @group contact
  */
 class ContactCategoryTest extends MigrateSqlSourceTestCase {
 
-  const PLUGIN_CLASS = 'Drupal\contact\Plugin\migrate\source\d6\ContactCategory';
+  const PLUGIN_CLASS = ContactCategory::class;
 
   protected $migrationConfiguration = array(
     'id' => 'test',
     'source' => array(
-      'plugin' => 'd6_contact_category',
+      'plugin' => 'contact_category',
     ),
   );
 

core/modules/contact/tests/src/Unit/Plugin/migrate/source/d6/ContactSettingsTest.php

@@ -0,0 +1,60 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Tests\contact\Unit\Plugin\migrate\source\d6\ContactSettingsTest.
+ */
+
+namespace Drupal\Tests\contact\Unit\Plugin\migrate\source\d6;
+
+use Drupal\contact\Plugin\migrate\source\ContactSettings;
+use Drupal\Tests\migrate\Unit\MigrateSqlSourceTestCase;
+
+/**
+ * Tests D6 contact settings source plugin.
+ *
+ * @group contact
+ */
+class ContactSettingsTest extends MigrateSqlSourceTestCase {
+
+  const PLUGIN_CLASS = ContactSettings::class;
+
+  protected $migrationConfiguration = array(
+    'id' => 'test',
+    'source' => array(
+      'plugin' => 'd6_contact_settings',
+      'variables' => array('site_name'),
+    ),
+  );
+
+  protected $expectedResults = array(
+    array(
+      'default_category' => '1',
+      'site_name' => 'Blorf!',
+    ),
+  );
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp() {
+    $this->databaseContents['variable'] = array(
+      array(
+        'name' => 'site_name',
+        'value' => serialize('Blorf!'),
+      ),
+    );
+    $this->databaseContents['contact'] = array(
+      array(
+        'cid' => '1',
+        'category' => 'Website feedback',
+        'recipients' => 'admin@example.com',
+        'reply' => '',
+        'weight' => '0',
+        'selected' => '1',
+      )
+    );
+    parent::setUp();
+  }
+
+}