third_party/WebKit/LayoutTests/fast/scrolling/scroll-to-origin-with-options-no-layout.html

   1 <!DOCTYPE html>
   2 <script src="../../resources/js-test.js"></script>
   3 <div id="spanner"></div>
   4 <script>
   5 var styleCount, layoutCount;
   6
   7 function assertSyncLayout(sync) {
   8     if (window.internals) {
   9         styleCount = internals.updateStyleAndReturnAffectedElementCount();
  10         layoutCount = internals.needsLayoutCount();
  11         // scrollTo should have synchronously updated style and layout
  12         if (sync) {
  13             shouldBe("styleCount", "0");
  14             shouldBe("layoutCount", "0");
  15         } else {
  16             shouldNotBe("styleCount", "0");
  17             shouldNotBe("layoutCount", "0");
  18         }
  19     }
  20 }
  21
  22 spanner.style.width = "3000px";
  23 spanner.style.height = "3000px";
  24 scrollTo({ left: 0, top: 1000});
  25 assertSyncLayout(true);
  26 shouldBe("window.scrollY", "1000");
  27
  28 scrollTo({ left: 1000, top: 1000});
  29 assertSyncLayout(true);
  30 shouldBe("window.scrollX", "1000");
  31
  32 spanner.style.height = "2000px";
  33 scrollTo({ left: 0, top: 0});
  34 assertSyncLayout(false);
  35 shouldBe("window.scrollY", "0");
  36
  37 spanner.style.height = "1px";
  38 scrollTo({ left: 0 });
  39 assertSyncLayout(true);
  40
  41 spanner.style.height = "2px";
  42 scrollTo({ top: 0 });
  43 assertSyncLayout(true);
  44
  45 spanner.style.height = "3px";
  46 scrollTo({ });
  47 assertSyncLayout(true);
  48 </script>