Prerequisites: A font for Chinese, Japanese, and Mongolian, that can handle vertical text.

mongolian in chinese

same Test passes if the order and rotation of Mongolian characters is the same.

締造真 ᠬᠤᠯᠤᠭᠠᠨᠠ ᠡᠨᠳᠡ ᠡᠨᠡ ᠴᠢᠷᠢᠭ 正全球通行的萬維網
reference graphic

Assertion: [Exploratory test] Setting writing-mode to vertical-rl will cause Mongolian text embedded in vertical Chinese to flow down the page, with letters in the normal vertical orientation, and wrap to the left.

Notes:

This is an exploratory test because the CSS3 Text module that defines writing-mode is not yet a Recommendation.

Next test
HTML5

vertical-text-008
Result summary & related tests