Create a new file of type empty, name it MyClassTest.m where "MyClass" is the name of the class to test, and then replace all MyClass -> YourClass

empty_gh-unit_test_case.m

//#import <GHUnitIOS/GHUnit.h> // i have this in my prefix file. Otherwise, uncomment
//#import "OCMock.h" // optional, but used often
#import "MyClass.h"

@interface MyClassTest : GHTestCase {}
@property (nonatomic, retain) MyClass *testInstance;
@end

@implementation MyClassTest
@synthesize testInstance;

-(void)setUp
{	
    // setup
}

-(void)tearDown
{
    // teardown
}


@end