CONSOLE ERROR: The given range is null.
-CONSOLE ERROR: The given range has no container. Perhaps 'detach()' has been invoked on it?
+CONSOLE WARNING: 'Range.detach' is now a no-op, as per DOM (http://dom.spec.whatwg.org/#dom-range-detach).
+CONSOLE ERROR: Discontiguous selection is not supported.
CONSOLE ERROR: The given range does not belong to the current selection's document.
CONSOLE ERROR: The given range and the current selection belong to two different document fragments.
Test error handling of Selection.addRange().