ios8 - Running tests on Xcode 6 and device

Question

I am trying to run unit tests on Xcode 6 if I run them on the simulator (and 7.1 at that) they run fine

other conditions yield this message:

2014-10-10 01:39:56.190 MyApp[493:173988] Error loading    
/private/var/mobile/Containers/Data/Application/A6C42E86-0147-4447-A605- 
FF864C5BD0F7/tmp/MyAppTests.xctest/MyAppTests:  
dlopen(/private/var/mobile/Containers/Data/Application/A6C42E86-0147-4447-A605-
FF864C5BD0F7/tmp/MyAppTests.xctest/MyAppTests, 262): no suitable image found.  
    Did find:

/private/var/mobile/Containers/Data/Application/A6C42E86-0147-4447-A605-
FF864C5BD0F7/tmp/MyAppTests.xctest/MyAppTests: mmap() error 1 at address=0x006D0000, 
size=0x0001E000 segment=__TEXT in Segment::map() mapping
/private/var/mobile/Containers/Data/Application/A6C42E86-0147-4447-A605-
FF864C5BD0F7/tmp/MyAppTests.xctest/MyAppTests

how do i fix it ?

Answer 1

I followed the steps of Lena Bru, but it didn't fixed my problem. Then I found this question about code-signing issues. I checked the general tab in my project settings and found out that "Team" was set to "None". After selecting a team, my tests run without problems.