If you are writing OCUnit tests, then you should only have a source (.m) file. There is no need for a header (.h).

Why no header (.h)?

  • test cases are, by nature, private implementation details
  • no need for a public interface (test cases are never imported by other test cases)
  • it is completely legal Objective-C to have the @interface and @implementation in the same file
//
// BTSPreferredTransferTest.m
//

#import <SenTestingKit/SenTestingKit.h>

@interface BTSPreferredTransferTest : SenTestCase
@end

@implementation BTSPreferredTransferTest

- (void)testSomethingUseful
{
    // Test implementation
}

@end