In looking through those cases , I discovered at least two cases within the last year that appear to use testing as the basis of complaints based on race bias in apartment rentals.
Directly from the DOJ website (excuse the formatting variations) below are links to materials related to those cases:
United States v. Biswas, et al. (M.D. Ala.)
summary complaint Press Release (4/21/09) consent decree press release (2/3/11)
United States v. Burgundy Gardens LLC (S.D.N.Y.)
summary complaint press release (12/6/10)
(HERE is a link to all DOJ race based fair housing cases).
Originally created and posted on the Oregon Housing Blog.