Test for https://bugs.webkit.org/show_bug.cgi?id=50335

On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".


PASS input.incremental is true
PASS input.incremental is false
PASS input.hasAttribute("incremental") is true
PASS input.hasAttribute("incremental") is false
PASS successfullyParsed is true

TEST COMPLETE