AppCode 2.1.2 does not support running Xcode's (DP5) recent test framework XCTest. Since Xcode 5 seems to have problems in running OCTest, there's no way to work with unit tests in both, Xcode 5 and AppCode 2.1.2 at the moment.
Steps to reproduce:
1. Create new iOS project in Xcode 5
2. Verify unit tests are running in Xcode 5 (CMD+U) and test template fails as expected
3. Open project in AppCode
no option to run tests, creating a new run OCTest run configuration fails
Tests created by Xcode are accessible via existing run configuration when opening project in AppCode for the first time.