diff --git a/core/modules/contact/lib/Drupal/contact/Tests/ContactPersonalTest.php b/core/modules/contact/lib/Drupal/contact/Tests/ContactPersonalTest.php
index 16d26b0..77b19d0 100644
--- a/core/modules/contact/lib/Drupal/contact/Tests/ContactPersonalTest.php
+++ b/core/modules/contact/lib/Drupal/contact/Tests/ContactPersonalTest.php
@@ -94,7 +94,7 @@ class ContactPersonalTest extends WebTestBase {
     $this->drupalLogin($this->admin_user);
     $edit = array('contact_default_status' => FALSE);
     $this->drupalPost('admin/config/people/accounts', $edit, t('Save configuration'));
-    $this->assertText(t('The configuration options have been saved.'), t('Setting successfully saved.'));
+    $this->assertText(t('The configuration options have been saved.'), 'Setting successfully saved.');
     $this->drupalLogout();
 
     // Re-create our contacted user with personal contact forms disabled by
diff --git a/core/modules/contact/lib/Drupal/contact/Tests/ContactSitewideTest.php b/core/modules/contact/lib/Drupal/contact/Tests/ContactSitewideTest.php
index 7eae709..d02368b 100644
--- a/core/modules/contact/lib/Drupal/contact/Tests/ContactSitewideTest.php
+++ b/core/modules/contact/lib/Drupal/contact/Tests/ContactSitewideTest.php
@@ -47,7 +47,7 @@ class ContactSitewideTest extends WebTestBase {
     $edit = array();
     $edit['contact_default_status'] = TRUE;
     $this->drupalPost('admin/config/people/accounts', $edit, t('Save configuration'));
-    $this->assertText(t('The configuration options have been saved.'), t('Setting successfully saved.'));
+    $this->assertText(t('The configuration options have been saved.'), 'Setting successfully saved.');
 
     // Delete old categories to ensure that new categories are used.
     $this->deleteCategories();
@@ -67,21 +67,21 @@ class ContactSitewideTest extends WebTestBase {
     $invalid_recipients = array('invalid', 'invalid@', 'invalid@site.', '@site.', '@site.com');
     foreach ($invalid_recipients as $invalid_recipient) {
       $this->addCategory($this->randomName(16), $invalid_recipient, '', FALSE);
-      $this->assertRaw(t('%recipient is an invalid e-mail address.', array('%recipient' => $invalid_recipient)), t('Caught invalid recipient (' . $invalid_recipient . ').'));
+      $this->assertRaw(t('%recipient is an invalid e-mail address.', array('%recipient' => $invalid_recipient)), format_string('Caught invalid recipient (@invalid_recipient)', array('@invalid_recipient' => $invalid_recipient)));
     }
 
     // Test validation of empty category and recipients fields.
     $this->addCategory($category = '', '', '', TRUE);
-    $this->assertText(t('Category field is required.'), t('Caught empty category field'));
-    $this->assertText(t('Recipients field is required.'), t('Caught empty recipients field.'));
+    $this->assertText(t('Category field is required.'), 'Caught empty category field');
+    $this->assertText(t('Recipients field is required.'), 'Caught empty recipients field.');
 
     // Create first valid category.
     $recipients = array('simpletest@example.com', 'simpletest2@example.com', 'simpletest3@example.com');
     $this->addCategory($category = $this->randomName(16), implode(',', array($recipients[0])), '', TRUE);
-    $this->assertRaw(t('Category %category has been saved.', array('%category' => $category)), t('Category successfully saved.'));
+    $this->assertRaw(t('Category %category has been saved.', array('%category' => $category)), 'Category successfully saved.');
 
     // Make sure the newly created category is included in the list of categories.
-    $this->assertNoUniqueText($category, t('New category included in categories list.'));
+    $this->assertNoUniqueText($category, 'New category included in categories list.');
 
     // Test update contact form category.
     $categories = $this->getCategories();
@@ -91,80 +91,80 @@ class ContactSitewideTest extends WebTestBase {
     $this->assertEqual($category_array['recipients'], $recipients_str);
     $this->assertEqual($category_array['reply'], $reply);
     $this->assertFalse($category_array['selected']);
-    $this->assertRaw(t('Category %category has been saved.', array('%category' => $category)), t('Category successfully saved.'));
+    $this->assertRaw(t('Category %category has been saved.', array('%category' => $category)), 'Category successfully saved.');
 
     // Ensure that the contact form is shown without a category selection input.
     user_role_grant_permissions(DRUPAL_ANONYMOUS_RID, array('access site-wide contact form'));
     $this->drupalLogout();
     $this->drupalGet('contact');
-    $this->assertText(t('Your e-mail address'), t('Contact form is shown when there is one category.'));
-    $this->assertNoText(t('Category'), t('When there is only one category, the category selection element is hidden.'));
+    $this->assertText(t('Your e-mail address'), 'Contact form is shown when there is one category.');
+    $this->assertNoText(t('Category'), 'When there is only one category, the category selection element is hidden.');
     $this->drupalLogin($admin_user);
 
     // Add more categories.
     $this->addCategory($category = $this->randomName(16), implode(',', array($recipients[0], $recipients[1])), '', FALSE);
-    $this->assertRaw(t('Category %category has been saved.', array('%category' => $category)), t('Category successfully saved.'));
+    $this->assertRaw(t('Category %category has been saved.', array('%category' => $category)), 'Category successfully saved.');
 
     $this->addCategory($category = $this->randomName(16), implode(',', array($recipients[0], $recipients[1], $recipients[2])), '', FALSE);
-    $this->assertRaw(t('Category %category has been saved.', array('%category' => $category)), t('Category successfully saved.'));
+    $this->assertRaw(t('Category %category has been saved.', array('%category' => $category)), 'Category successfully saved.');
 
     // Try adding a category that already exists.
     $this->addCategory($category, '', '', FALSE);
-    $this->assertNoRaw(t('Category %category has been saved.', array('%category' => $category)), t('Category not saved.'));
-    $this->assertRaw(t('A contact form with category %category already exists.', array('%category' => $category)), t('Duplicate category error found.'));
+    $this->assertNoRaw(t('Category %category has been saved.', array('%category' => $category)), 'Category not saved.');
+    $this->assertRaw(t('A contact form with category %category already exists.', array('%category' => $category)), 'Duplicate category error found.');
 
     // Clear flood table in preparation for flood test and allow other checks to complete.
     db_delete('flood')->execute();
     $num_records_after = db_query("SELECT COUNT(*) FROM {flood}")->fetchField();
-    $this->assertIdentical($num_records_after, '0', t('Flood table emptied.'));
+    $this->assertIdentical($num_records_after, '0', 'Flood table emptied.');
     $this->drupalLogout();
 
     // Check to see that anonymous user cannot see contact page without permission.
     user_role_revoke_permissions(DRUPAL_ANONYMOUS_RID, array('access site-wide contact form'));
     $this->drupalGet('contact');
-    $this->assertResponse(403, t('Access denied to anonymous user without permission.'));
+    $this->assertResponse(403, 'Access denied to anonymous user without permission.');
 
     // Give anonymous user permission and see that page is viewable.
     user_role_grant_permissions(DRUPAL_ANONYMOUS_RID, array('access site-wide contact form'));
     $this->drupalGet('contact');
-    $this->assertResponse(200, t('Access granted to anonymous user with permission.'));
+    $this->assertResponse(200, 'Access granted to anonymous user with permission.');
 
     // Submit contact form with invalid values.
     $this->submitContact('', $recipients[0], $this->randomName(16), $categories[0], $this->randomName(64));
-    $this->assertText(t('Your name field is required.'), t('Name required.'));
+    $this->assertText(t('Your name field is required.'), 'Name required.');
 
     $this->submitContact($this->randomName(16), '', $this->randomName(16), $categories[0], $this->randomName(64));
-    $this->assertText(t('Your e-mail address field is required.'), t('E-mail required.'));
+    $this->assertText(t('Your e-mail address field is required.'), 'E-mail required.');
 
     $this->submitContact($this->randomName(16), $invalid_recipients[0], $this->randomName(16), $categories[0], $this->randomName(64));
     $this->assertRaw(t('The e-mail address %mail is not valid.', array('%mail' => 'invalid')), 'Valid e-mail required.');
 
     $this->submitContact($this->randomName(16), $recipients[0], '', $categories[0], $this->randomName(64));
-    $this->assertText(t('Subject field is required.'), t('Subject required.'));
+    $this->assertText(t('Subject field is required.'), 'Subject required.');
 
     $this->submitContact($this->randomName(16), $recipients[0], $this->randomName(16), $categories[0], '');
-    $this->assertText(t('Message field is required.'), t('Message required.'));
+    $this->assertText(t('Message field is required.'), 'Message required.');
 
     // Test contact form with no default category selected.
     db_update('contact')
       ->fields(array('selected' => 0))
       ->execute();
     $this->drupalGet('contact');
-    $this->assertRaw(t('- Please choose -'), t('Without selected categories the visitor is asked to chose a category.'));
+    $this->assertRaw(t('- Please choose -'), 'Without selected categories the visitor is asked to chose a category.');
 
     // Submit contact form with invalid category id (cid 0).
     $this->submitContact($this->randomName(16), $recipients[0], $this->randomName(16), 0, '');
-    $this->assertText(t('You must select a valid category.'), t('Valid category required.'));
+    $this->assertText(t('You must select a valid category.'), 'Valid category required.');
 
     // Submit contact form with correct values and check flood interval.
     for ($i = 0; $i < $flood_limit; $i++) {
       $this->submitContact($this->randomName(16), $recipients[0], $this->randomName(16), $categories[0], $this->randomName(64));
-      $this->assertText(t('Your message has been sent.'), t('Message sent.'));
+      $this->assertText(t('Your message has been sent.'), 'Message sent.');
     }
     // Submit contact form one over limit.
     $this->drupalGet('contact');
-    $this->assertResponse(403, t('Access denied to anonymous user after reaching message treshold.'));
-    $this->assertRaw(t('You cannot send more than %number messages in @interval. Try again later.', array('%number' => config('contact.settings')->get('flood.limit'), '@interval' => format_interval(600))), t('Message threshold reached.'));
+    $this->assertResponse(403, 'Access denied to anonymous user after reaching message treshold.');
+    $this->assertRaw(t('You cannot send more than %number messages in @interval. Try again later.', array('%number' => config('contact.settings')->get('flood.limit'), '@interval' => format_interval(600))), 'Message threshold reached.');
 
     // Delete created categories.
     $this->drupalLogin($admin_user);
@@ -197,8 +197,8 @@ class ContactSitewideTest extends WebTestBase {
 
     // We are testing the auto-reply, so there should be one e-mail going to the sender.
     $captured_emails = $this->drupalGetMails(array('id' => 'contact_page_autoreply', 'to' => $email, 'from' => 'foo@example.com'));
-    $this->assertEqual(count($captured_emails), 1, t('Auto-reply e-mail was sent to the sender for category "foo".'), t('Contact'));
-    $this->assertEqual($captured_emails[0]['body'], drupal_html_to_text($foo_autoreply), t('Auto-reply e-mail body is correct for category "foo".'), t('Contact'));
+    $this->assertEqual(count($captured_emails), 1, t('Auto-reply e-mail was sent to the sender for category "foo".'), 'Contact');
+    $this->assertEqual($captured_emails[0]['body'], drupal_html_to_text($foo_autoreply), t('Auto-reply e-mail body is correct for category "foo".'), 'Contact');
 
     // Test the auto-reply for category 'bar'.
     $email = $this->randomName(32) . '@example.com';
@@ -206,14 +206,14 @@ class ContactSitewideTest extends WebTestBase {
 
     // Auto-reply for category 'bar' should result in one auto-reply e-mail to the sender.
     $captured_emails = $this->drupalGetMails(array('id' => 'contact_page_autoreply', 'to' => $email, 'from' => 'bar@example.com'));
-    $this->assertEqual(count($captured_emails), 1, t('Auto-reply e-mail was sent to the sender for category "bar".'), t('Contact'));
-    $this->assertEqual($captured_emails[0]['body'], drupal_html_to_text($bar_autoreply), t('Auto-reply e-mail body is correct for category "bar".'), t('Contact'));
+    $this->assertEqual(count($captured_emails), 1, t('Auto-reply e-mail was sent to the sender for category "bar".'), 'Contact');
+    $this->assertEqual($captured_emails[0]['body'], drupal_html_to_text($bar_autoreply), t('Auto-reply e-mail body is correct for category "bar".'), 'Contact');
 
     // Verify that no auto-reply is sent when the auto-reply field is left blank.
     $email = $this->randomName(32) . '@example.com';
     $this->submitContact($this->randomName(16), $email, $this->randomString(64), 4, $this->randomString(128));
     $captured_emails = $this->drupalGetMails(array('id' => 'contact_page_autoreply', 'to' => $email, 'from' => 'no_autoreply@example.com'));
-    $this->assertEqual(count($captured_emails), 0, t('No auto-reply e-mail was sent to the sender for category "no-autoreply".'), t('Contact'));
+    $this->assertEqual(count($captured_emails), 0, t('No auto-reply e-mail was sent to the sender for category "no-autoreply".'), 'Contact');
   }
 
   /**
@@ -294,7 +294,7 @@ class ContactSitewideTest extends WebTestBase {
     foreach ($categories as $category) {
       $category_name = db_query("SELECT category FROM {contact} WHERE cid = :cid", array(':cid' => $category))->fetchField();
       $this->drupalPost('admin/structure/contact/delete/' . $category, array(), t('Delete'));
-      $this->assertRaw(t('Category %category has been deleted.', array('%category' => $category_name)), t('Category deleted successfully.'));
+      $this->assertRaw(t('Category %category has been deleted.', array('%category' => $category_name)), 'Category deleted successfully.');
     }
   }