CardTest.m

@implementation CardTest
- (void)testShouldKnowCardCannotMatchEmptyCardList {
    Card *card = [Card new];
    NSArray *otherCards = [NSArray new];
    STAssertEquals(0, [card match:otherCards], @"Should not match empty card list.");
}

- (void)testShouldMatchCardWhenCardListContainsCardWithSameContent {
    Card *card = [[Card alloc] initWithContents:@"Test Card"];
    Card *matchingCard = [[Card alloc] initWithContents:@"Test Card"];
    Card *differentCard = [[Card alloc] initWithContents:@"Different Test Card"];
    NSMutableArray *cards = [[NSMutableArray alloc] initWithObjects:differentCard, differentCard, matchingCard, nil];
    time_t seed = time(nil);
    srandom(seed);
    for (NSInteger index = cards.count - 1; index > 0; index--) {
        NSInteger swapIndex = random() % index;
        [cards exchangeObjectAtIndex:index withObjectAtIndex:swapIndex];
    }
    int result = [card match:cards];
    STAssertEquals(1, result, [NSString stringWithFormat:@"Should match when matching card is in list. Random seed: %d", seed]);
}
@end