This test ensures WebKit lets user place caret around bidirectional text properly.

Current offset:
abcאבג
0 1 2 3 5 4 6
נת12
2 3 4 1 4 (There is a bug. Clicking on the left of 12 should result in offset 0.)
לשנת
0 3 2 1 4
aקל12יםd
0 1 6 3 4 5 2 7 8
12קל43ab
4 5 6 3 0 1 2 7 8
abcלשנ
6 1 2 6 5 4 3