'Module was not compiled for testing' when using @testable

Question

I\'m trying to use Swift 2\'s new @testable declaration to expose my classes to the test target. However I\'m getting this compiler error:

Answer 1

For those of you who are experiencing this only upon running Xcode Profiler: switch profile build configuration in your scheme management to the one that has testability enabled - and that would be debug in most cases: