You will need a font that allows you to distinguish Arabic characters.
directional type, ltr context, arabic
Test passes if the characters follow the same order.

Assertion: In a left-to-right context, without markup, styling or special characters, a sequence of Arabic characters and spaces will progress from right to left.
Notes:
= means you should check that the test and reference graphic look the same, except for font differences and cursive joining behavior. If they are different, use the addition instructional text to check for differences that are significant to the test.