CSS Text level 3 Test: zwnj and text-shaping, cross font, fallback

Test passes if both halves of each of the pairs below are identical:

ـ‌ا ـﺍ
ب‌ـ ﺏـ
ـب‌ـ ـﺐـ
ـ‌ب‌ـ ـﺏـ
ـ‌بـ ـﺑـ
ـ‌ب ـﺏ