The issue is that we are not at full unit test coverage in either the joomla or legacy branches but we need to be. Also even for coverage that we have there are improvements to be made.
If you are working on a unit test project please put a comment below and then later you can link your pull request.
Joomla Test Coverage Report
Legacy Test Coverage Report
Documentation on Testing in Joomla
(note: the version numbers on this document are innaccurate)
I am working on unit testing for the Legacy JModel* set of classes.
I've completed JModelLegacy which has already been merged - #1588
I'm doing some work in JUserHelper.
#1694 includes full tests for the email rule.
The user helper tests were merged.
#1745 adds some more user test cases .
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