Reconciling timing of project prepping and test namespace discovery

[cemerick]

If a task added to :prep-tasks generates sources containing tests, those test namespaces will not be run because leiningen.test performs its namespace discovery before eval-in-project (and therefore :prep-tasks tasks) is run.

A real-world example of this is cljx (described more completely with a workaround here), which is moving away from hooks to use :prep-tasks (as advised here).

How can this be reconciled?

[technomancy]

I'd be open to an explicit prep call before the test namespaces are calculated. There should be very little cost to prepping more than once.

[cemerick]

Sounds good. It's not an issue I personally have, but I've left breadcrumbs for those potentially affected to pick this up. Thanks, Phil.

[hypirion]

Fixed by #2165.