Fix skips in Action Pack

We can't run this test on Ruby 2.7 due to minitest being locked in the
Gemfile to an older version, so we should use that as a condition
instead of skipping if minitest doesn't have metadata.

Author: skipkayhil

actionpack/test/dispatch/system_testing/screenshot_helper_test.rb

@@ -152,17 +152,18 @@ def setup
     assert_match %r|url=artifact://.+?tmp/screenshots/1_x\.png|, display_image_actual
   end
 
-  test "take_failed_screenshot persists the image path in the test metadata" do
-    skip "Older versions of Minitest don't support test metadata." unless Minitest::Runnable.method_defined?(:metadata)
-
-    Rails.stub :root, Pathname.getwd do
-      @new_test.stub :passed?, false do
-        Capybara::Session.stub :instance_created?, true do
-          @new_test.stub :save_image, nil do
-            @new_test.stub :show, -> (_) { } do
-              @new_test.take_failed_screenshot
-
-              assert_equal @new_test.send(:relative_image_path), @new_test.metadata[:failure_screenshot_path]
+  # minitest doesn't support metadata in the version locked on Ruby 2.7
+  if RUBY_VERSION > "3.0"
+    test "take_failed_screenshot persists the image path in the test metadata" do
+      Rails.stub :root, Pathname.getwd do
+        @new_test.stub :passed?, false do
+          Capybara::Session.stub :instance_created?, true do
+            @new_test.stub :save_image, nil do
+              @new_test.stub :show, -> (_) { } do
+                @new_test.take_failed_screenshot
+
+                assert_equal @new_test.send(:relative_image_path), @new_test.metadata[:failure_screenshot_path]
+              end
             end
           end
         end