only in patch2:
unchanged:
--- a/core/modules/image/lib/Drupal/image/Tests/ImageThemeFunctionTest.php
+++ b/core/modules/image/lib/Drupal/image/Tests/ImageThemeFunctionTest.php
@@ -36,7 +36,7 @@ class ImageThemeFunctionTest extends WebTestBase {
     $original_uri = file_unmanaged_copy($file->uri, 'public://', FILE_EXISTS_RENAME);
 
     // Create a style.
-    image_style_save(array('name' => 'test'));
+    image_style_save(array('name' => 'test', 'label' => 'Test'));
     $url = image_style_url('test', $original_uri);
 
     // Test using theme_image_formatter() without an image title, alt text, or