Ideographic, less than 4 common characters plus space at line end
Test passes if you see a single line with a space after the last digit.
Assertion: The source text [ideographic characters + 3 common characters + 3 spaces + line break + ideographic characters] will display as a single line with a space after the common characters.
Notes:
The assumptions this test makes about expected behaviour are based on the white-space processing rules described in CSS3.