third_party/WebKit/LayoutTests/fast/dom/Element/scrollingElement-null-body-documentElement.html

   1 <!DOCTYPE html>
   2 <script src="../../../resources/js-test.js"></script>
   3 <iframe id="nullbody" src="resources/quirks-empty.html"></iframe><br>
   4 <iframe id="nullroot" src="resources/quirks-empty.html"></iframe><br>
   5 <script>
   6   description("Verifies that asking for the scrollingElement of a document with null body or null documentElement doesn't crash");
   7   var jsTestIsAsync = true;
   8
   9   function runtests()
  10   {
  11     // Verify scrollTopLeftInterop is actually enabled.
  12     shouldBe("document.scrollingElement", "document.documentElement");
  13
  14     // Verify null body doesn't crash.
  15     var nullbody = document.getElementById("nullbody");
  16     nullbody.contentDocument.documentElement.removeChild(nullbody.contentDocument.body);
  17     shouldBeEqualToString("nullbody.contentDocument.compatMode", "BackCompat");
  18     shouldBeNull("nullbody.contentDocument.body");
  19     shouldBeNull("nullbody.contentDocument.scrollingElement");
  20
  21     // Verify null documentElement doesn't crash.
  22     var nullroot = document.getElementById("nullroot");
  23     nullroot.contentDocument.removeChild(nullroot.contentDocument.documentElement);
  24     shouldBeEqualToString("nullroot.contentDocument.compatMode", "BackCompat");
  25     shouldBeNull("nullroot.contentDocument.documentElement");
  26     shouldBeNull("nullroot.contentDocument.body");
  27     shouldBeNull("nullroot.contentDocument.scrollingElement")
  28
  29     finishJSTest();
  30   }
  31
  32   function onload(e) {
  33     e.target.loaded = true;
  34     if (nullbody.loaded && nullroot.loaded)
  35         runtests();
  36   }
  37
  38   nullbody.addEventListener('load', onload);
  39   nullroot.addEventListener('load', onload);
  40
  41 </script>