public static void IfCollectionsAreNotEquivalent <T>(
[CanBeNull, AssertionCondition(AssertionConditionType.IS_NOT_NULL)]
IEnumerable <T> collection1,
[CanBeNull, AssertionCondition(AssertionConditionType.IS_NOT_NULL)]
IEnumerable <T> collection2,
Violation message
)
{
Fail.IfArgumentNull(collection1, nameof(collection1));
Fail.IfArgumentNull(collection2, nameof(collection2));
IEnumerable <T> list1 = collection1 as IList <T> ?? collection1.ToList();
IEnumerable <T> list2 = collection2 as IList <T> ?? collection2.ToList();
int collection1Count = list1.Count();
int collection2Count = list2.Count();
if (collection1Count != collection2Count)
{
throw Fail.Because(message);
}
bool areEquivalent = list1.Intersect(list2)
.Count() == collection1Count;
Fail.IfFalse(areEquivalent, message);
}