Bugfix for SenTestCase when using base classes for test cases.

BetterTestCase.m

// OCUnit/SenTestCase's vanilla testInvocations method does not produce a unique list of methods
// when you inherit from a common test base class.  Currently it will call the same test methods
// multiple times, depending on the number of base classes.
//
// To prevent these duplicate test method calls, override testInvocations like this.
//
// Written in 2012 by Torsten Becker <torsten.becker@gmail.com>


@interface BetterTestCase : SenTestCase

@end


@implementation BetterTestCase

+ (NSArray *)testInvocations
{
    NSArray *invocations = [super testInvocations];
    NSMutableDictionary *selectorsToInvocations = [[NSMutableDictionary alloc] init];

    for (NSInvocation *invoc in invocations)
    {
        [selectorsToInvocations setObject:invoc forKey:[NSString stringWithUTF8String:sel_getName(invoc.selector)]];
    }

    return [selectorsToInvocations allValues];
}

@end