It's sorely needed. Unit testing for django is not very well documented. The best guide I've found out there is probably by Daniel Lindsley @ toastdriven.[0] However, even that guide suggests using fixture data which break badly as a project grows (I've experienced this first hand), so I'd much prefer a factories based testing chapter.[1]
there is a chapiter on testing in the official doc which is quite good. And i'm sure you can make a contribution so everybody can enjoy your expertise on the matter.