Run unit tests for two Django applications in PyCharm
OK, I've found solution. 
If you want to launch many test suits with one test launcher in PyCharm, you should add names of your applications separated by a space to Target field of your Django tests Run/Debug configuration.
I've Django project with two applications with added unit tests (django.test.TestCase). In PyCharm I have created two Django test launchers (one for every app). In this configuration everything works correctly. Now I want to create one test launcher, which will be able to start unit test for both applications at once.
Is it possible?