LayoutTests/fast/events/scroll-in-scaled-page-with-overflow-hidden.html

   1 <head>
   2     <style>
   3         html, body { margin:0; overflow: hidden; }
   4     </style>
   5     <script src="../js/resources/js-test-pre.js"></script>
   6 </head>
   7
   8 <div>This tests that a usually overflow: hidden viewport should be scrollable when scaled. Otherwise, you can't get to content
   9     you would have been able to get to had you not been zoomed it.</div>
  10 <div id="console"></div>
  11
  12 <div style='font-size:40px; height: 1000px;'>
  13 </div>
  14
  15 <script>
  16     (function() {
  17         if (!window.testRunner) {
  18             debug("This test only works in the test runner.");
  19             return;
  20         }
  21
  22         // Force a layout.
  23         document.body.offsetLeft;
  24
  25         if (window.internals)
  26             window.internals.settings.setPageScaleFactor(2, 0, 0);
  27
  28         shouldBe("window.document.body.scrollTop", "0");
  29
  30         if (window.eventSender) {
  31             eventSender.mouseMoveTo(100, 100);
  32             eventSender.mouseScrollBy(0, -5);
  33         }
  34
  35         shouldBe("window.document.body.scrollTop", "100");
  36     })();
  37 </script>