Add this to your SenTestCase subclass to name your tests something other than "test..." (in this case "benchmark...", but you can make it whatever you like by changing the "strncmp" line).

SenTestCrazy.m

+ (NSArray *)testInvocations {
    unsigned int methodCount;
    Method *methods = class_copyMethodList(self, &methodCount);
    assert(methodCount);

    Method method;
    SEL methodName;
    NSMethodSignature *methodSig;

    NSMutableArray *invocations = [[NSMutableArray alloc] init];
    NSInvocation *invocation;

    do {
        method = methods[--methodCount];
        methodName = method_getName(method);
        if(!strncmp("benchmark", sel_getName(methodName), 9)) {
            methodSig = [NSMethodSignature signatureWithObjCTypes:method_getTypeEncoding(method)];
            invocation = [NSInvocation invocationWithMethodSignature:methodSig];
            [invocation setSelector:methodName];
            [invocations addObject:invocation];
        }
    } while(methodCount);

    return invocations;
}