diff --git a/core/modules/contact/src/Tests/ContactPersonalTest.php b/core/modules/contact/tests/src/Functional/ContactPersonalTest.php
similarity index 97%
rename from core/modules/contact/src/Tests/ContactPersonalTest.php
rename to core/modules/contact/tests/src/Functional/ContactPersonalTest.php
index 936aed5..40be162 100644
--- a/core/modules/contact/src/Tests/ContactPersonalTest.php
+++ b/core/modules/contact/tests/src/Functional/ContactPersonalTest.php
@@ -1,11 +1,13 @@
 <?php
 
-namespace Drupal\contact\Tests;
+namespace Drupal\Tests\contact\Functional;
 
 use Drupal\Component\Utility\SafeMarkup;
 use Drupal\Component\Render\PlainTextOutput;
 use Drupal\Core\Session\AccountInterface;
-use Drupal\simpletest\WebTestBase;
+use Drupal\Core\Test\AssertMailTrait;
+use Drupal\system\Tests\Cache\AssertPageCacheContextsAndTagsTrait;
+use Drupal\Tests\BrowserTestBase;
 use Drupal\user\RoleInterface;
 
 /**
@@ -13,7 +15,10 @@
  *
  * @group contact
  */
-class ContactPersonalTest extends WebTestBase {
+class ContactPersonalTest extends BrowserTestBase {
+
+  use AssertMailTrait;
+  use AssertPageCacheContextsAndTagsTrait;
 
   /**
    * Modules to enable.
@@ -67,7 +72,7 @@ function testSendPersonalContactMessage() {
     $this->drupalGet('user/' . $this->contactUser->id() . '/contact');
     $this->assertEscaped($mail);
     $message = $this->submitPersonalContact($this->contactUser);
-    $mails = $this->drupalGetMails();
+    $mails = $this->getMails();
     $this->assertEqual(1, count($mails));
     $mail = $mails[0];
     $this->assertEqual($mail['to'], $this->contactUser->getEmail());
diff --git a/core/modules/contact/src/Tests/ContactSitewideTest.php b/core/modules/contact/tests/src/Functional/ContactSitewideTest.php
similarity index 97%
rename from core/modules/contact/src/Tests/ContactSitewideTest.php
rename to core/modules/contact/tests/src/Functional/ContactSitewideTest.php
index ffc2e90..a288733 100644
--- a/core/modules/contact/src/Tests/ContactSitewideTest.php
+++ b/core/modules/contact/tests/src/Functional/ContactSitewideTest.php
@@ -1,13 +1,14 @@
 <?php
 
-namespace Drupal\contact\Tests;
+namespace Drupal\Tests\contact\Functional;
 
 use Drupal\Component\Utility\Unicode;
 use Drupal\contact\Entity\ContactForm;
 use Drupal\Core\Mail\MailFormatHelper;
+use Drupal\Core\Test\AssertMailTrait;
 use Drupal\Core\Url;
 use Drupal\field_ui\Tests\FieldUiTestTrait;
-use Drupal\simpletest\WebTestBase;
+use Drupal\Tests\BrowserTestBase;
 use Drupal\Core\Entity\EntityTypeInterface;
 use Drupal\user\RoleInterface;
 
@@ -18,9 +19,10 @@
  *
  * @group contact
  */
-class ContactSitewideTest extends WebTestBase {
+class ContactSitewideTest extends BrowserTestBase {
 
   use FieldUiTestTrait;
+  use AssertMailTrait;
 
   /**
    * Modules to enable.
@@ -299,7 +301,7 @@ function testSiteWideContact() {
       $field_name . '[0][value]' => $this->randomMachineName(),
     );
     $this->drupalPostForm(NULL, $edit, t('Send message'));
-    $mails = $this->drupalGetMails();
+    $mails = $this->getMails();
     $mail = array_pop($mails);
     $this->assertEqual($mail['subject'], t('[@label] @subject', array('@label' => $label, '@subject' => $edit['subject[0][value]'])));
     $this->assertTrue(strpos($mail['body'], $field_label));
@@ -377,7 +379,7 @@ function testAutoReply() {
     $this->submitContact($this->randomMachineName(16), $email, $subject, 'foo', $this->randomString(128));
 
     // We are testing the auto-reply, so there should be one email going to the sender.
-    $captured_emails = $this->drupalGetMails(array('id' => 'contact_page_autoreply', 'to' => $email));
+    $captured_emails = $this->getMails(array('id' => 'contact_page_autoreply', 'to' => $email));
     $this->assertEqual(count($captured_emails), 1);
     $this->assertEqual(trim($captured_emails[0]['body']), trim(MailFormatHelper::htmlToText($foo_autoreply)));
 
@@ -386,14 +388,14 @@ function testAutoReply() {
     $this->submitContact($this->randomMachineName(16), $email, $this->randomString(64), 'bar', $this->randomString(128));
 
     // Auto-reply for form 'bar' should result in one auto-reply email to the sender.
-    $captured_emails = $this->drupalGetMails(array('id' => 'contact_page_autoreply', 'to' => $email));
+    $captured_emails = $this->getMails(array('id' => 'contact_page_autoreply', 'to' => $email));
     $this->assertEqual(count($captured_emails), 1);
     $this->assertEqual(trim($captured_emails[0]['body']), trim(MailFormatHelper::htmlToText($bar_autoreply)));
 
     // Verify that no auto-reply is sent when the auto-reply field is left blank.
     $email = $this->randomMachineName(32) . '@example.com';
     $this->submitContact($this->randomMachineName(16), $email, $this->randomString(64), 'no_autoreply', $this->randomString(128));
-    $captured_emails = $this->drupalGetMails(array('id' => 'contact_page_autoreply', 'to' => $email));
+    $captured_emails = $this->getMails(array('id' => 'contact_page_autoreply', 'to' => $email));
     $this->assertEqual(count($captured_emails), 0);
 
     // Verify that the current error message doesn't show, that the auto-reply
diff --git a/core/modules/contact/src/Tests/ContactStorageTest.php b/core/modules/contact/tests/src/Functional/ContactStorageTest.php
similarity index 98%
rename from core/modules/contact/src/Tests/ContactStorageTest.php
rename to core/modules/contact/tests/src/Functional/ContactStorageTest.php
index ad0e8d4..f32233a 100644
--- a/core/modules/contact/src/Tests/ContactStorageTest.php
+++ b/core/modules/contact/tests/src/Functional/ContactStorageTest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace Drupal\contact\Tests;
+namespace Drupal\Tests\contact\Functional;
 
 use Drupal\Component\Utility\Unicode;
 use Drupal\contact\Entity\Message;