The test mathml/presentation/scripts-subsup.html is supposed to check the rendering of subsup scripts. However, the MathML 3 recommendation does not specify precisely how to implement these scripted elements so the test is not really accurate / reliable. Currently it is failing on most platforms: LayoutTests$ find -type f -name TestExpectations | xargs grep scripts-subsup.html ./platform/ios-simulator/TestExpectations:mathml/presentation/scripts-subsup.html [ Pass ImageOnlyFailure ] ./platform/gtk/TestExpectations:webkit.org/b/142289 mathml/presentation/scripts-subsup.html [ ImageOnlyFailure ] ./platform/ios-simulator-wk1/TestExpectations:mathml/presentation/scripts-subsup.html [ ImageOnlyFailure ] ./platform/mac/TestExpectations:mathml/presentation/scripts-subsup.html [ Pass ImageOnlyFailure ] Moreover, we are testing several things in one reftest. We should probably split it into smaller tests and try and improve it (e.g. using javascript to measure boxes instead). Most of the features are probably already tested by imported/mathml-in-html5/mathml/subsup-parameters-1.html.
Created attachment 282711 [details] Patch
Comment on attachment 282711 [details] Patch Attachment 282711 [details] did not pass ios-sim-ews (ios-simulator-wk2): Output: http://webkit-queues.webkit.org/results/1624469 New failing tests: mathml/presentation/scripts-subsup.html
Created attachment 282716 [details] Archive of layout-test-results from ews124 for ios-simulator-wk2 The attached test failures were seen while running run-webkit-tests on the ios-sim-ews. Bot: ews124 Port: ios-simulator-wk2 Platform: Mac OS X 10.11.4
Created attachment 282718 [details] Patch
Created attachment 282760 [details] Patch
Committed r202904: <http://trac.webkit.org/changeset/202904>