1 This test makes sure hiding and showing a scrollable iframe correctly updates the set of non-fast scrollable rects.
3 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
6 PASS successfullyParsed is true
9 PASS internals.nonFastScrollableRects(document).length is 1
10 PASS internals.nonFastScrollableRects(document).length is 0
11 PASS internals.nonFastScrollableRects(document).length is 1