| <!DOCTYPE html> |
| <script src="../../../resources/js-test.js"></script> |
| <iframe id="nullbody" src="resources/quirks-empty.html"></iframe><br> |
| <iframe id="nullroot" src="resources/quirks-empty.html"></iframe><br> |
| <script> |
| description("Verifies that asking for the scrollingElement of a document with null body or null documentElement doesn't crash"); |
| var jsTestIsAsync = true; |
| |
| function runtests() |
| { |
| // Verify scrollTopLeftInterop is actually enabled. |
| shouldBe("document.scrollingElement", "document.documentElement"); |
| |
| // Verify null body doesn't crash. |
| var nullbody = document.getElementById("nullbody"); |
| nullbody.contentDocument.documentElement.removeChild(nullbody.contentDocument.body); |
| shouldBeEqualToString("nullbody.contentDocument.compatMode", "BackCompat"); |
| shouldBeNull("nullbody.contentDocument.body"); |
| shouldBeNull("nullbody.contentDocument.scrollingElement"); |
| |
| // Verify null documentElement doesn't crash. |
| var nullroot = document.getElementById("nullroot"); |
| nullroot.contentDocument.removeChild(nullroot.contentDocument.documentElement); |
| shouldBeEqualToString("nullroot.contentDocument.compatMode", "BackCompat"); |
| shouldBeNull("nullroot.contentDocument.documentElement"); |
| shouldBeNull("nullroot.contentDocument.body"); |
| shouldBeNull("nullroot.contentDocument.scrollingElement") |
| |
| finishJSTest(); |
| } |
| |
| function onload(e) { |
| e.target.loaded = true; |
| if (nullbody.loaded && nullroot.loaded) |
| runtests(); |
| } |
| |
| nullbody.addEventListener('load', onload); |
| nullroot.addEventListener('load', onload); |
| |
| </script> |
