1 Tests that dialog is visible after show() is called and not visible after close() is called. bug 90931
3 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
6 PASS computedStyle.getPropertyValue('display') is 'none'
7 PASS computedStyle.getPropertyValue('display') is 'block'
8 PASS computedStyle.getPropertyValue('display') is 'none'
9 PASS dialog.close(); threw exception InvalidStateError: Failed to execute 'close' on 'HTMLDialogElement': The element does not have an 'open' attribute, and therefore cannot be closed..
10 PASS successfullyParsed is true