1 Tests that adding/removing a FontFace to/from FontFaceSet trigger font update.
3 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
6 FAIL testElement.offsetWidth should be 58. Was 57.
7 FAIL testElement.offsetWidth should be 113. Was 112.
8 FAIL testElement.offsetWidth should be 58. Was 57.
9 FAIL testElement.offsetWidth should be 113. Was 112.
10 FAIL testElement.offsetWidth should be 58. Was 57.
11 PASS successfullyParsed is true
14 abcdefg abcdefg abcdefg