Code coverage result is not accurate to real coverage in Xcode 7

Question

I am running test cases in application with enabled code coverage data Xcode 7 Beta 2. But I am able to get only few files coverage data while my all test cases are running succ

Answer 1

Bear in mind that there are multiple ways to cover code with tests, you may test all functions, or you may be covering all instructions in the functions, but you may not be covering all the execution paths that are possible.

Or Xcode coverage stuff may be broken, but it's hard to tell if you don't give details on what kind of coverage are you expecting it to check.