This test verifies that enabling or disabling platform spell checking preferences influences the presence of spelling markers in the document. Requires WebKitTestRunner. On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". PASS Turned continuous spell checking off. PASS internals.hasSpellingMarker(0, 3) is false PASS Turned continuous spell checking on. PASS internals.hasSpellingMarker(0, 3) is true PASS Turned continuous spell checking off again. PASS internals.hasSpellingMarker(0, 3) is false PASS successfullyParsed is true TEST COMPLETE