Comment 141 for bug 134813

Looks good, but one more thing! You should use SimpleTest.waitForFocus to start the test.

(In reply to comment #71)
> BTW, while writing the test case I observed that there is another bug in FF.
> Opening the context menu at the end of the line returns rangeParent.data
> "undefined". Since this is out of the scope of the current bug and since it
> isn't as annoying, I did not include tests for it in the mochitest.

I suspect this is not actually a bug. I suspect the rangeParent is a <br> element. This probably isn't a good thing to return, but it doesn't matter too much since the details of what a textarea contains are not visible to Web content.

Thanks!