I created a few test cases and they all passed... That\'s because they are not being run.
From Xcode, I get:
Test Suite \'All tests\' started at... Test Suite
Xcode 5 now used XCTestCase, not SenTest. Apple is now supporting Unit Testing more directly including their own version of SenTest named XCTestCase. Additionally the UI is much improved, allowing individual tests to be run, a Test Navigator and no longer creating .h test files. Note that the test macros are not renames with an XC prefix.
See the WWDC-13 video 409: "Testing in Xcode 5".
If you use the Xcode 5 template to create the testing environment the project will include a test target and a working (and failing) test.