Fix test problem that was causing WordPress to generate JPEG despite WebP support (by secondary editor class).

felixarntz · felixarntz · commit 8825df789b16 · 2022-10-04T19:41:28.000-07:00
diff --git a/tests/modules/images/webp-uploads/load-tests.php b/tests/modules/images/webp-uploads/load-tests.php
@@ -586,7 +586,9 @@ public function it_should_allow_the_upload_of_a_webp_image_if_at_least_one_edito
 		add_filter(
 			'wp_image_editors',
 			function () {
-				return array( 'WP_Image_Doesnt_Support_WebP', 'WP_Image_Editor_GD' );
+				// WP core does not choose the WP_Image_Editor instance based on MIME type support,
+				// therefore the one that does support WebP needs to be first in this list.
+				return array( 'WP_Image_Editor_GD', 'WP_Image_Doesnt_Support_WebP' );
 			}
 		);
 
