| Test behavior of Document.replaceChild() when oldChild is null. | |
| On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". | |
| PASS document.replaceChild(document.firstChild, null) threw exception TypeError: Failed to execute 'replaceChild' on 'Node': parameter 2 is not of type 'Node'.. | |
| PASS successfullyParsed is true | |
| TEST COMPLETE | |