private bool CompareNonNull(IEnumerable <T> actual, IEnumerable <T> expected)
{
Debug.Assert(actual != null);
Debug.Assert(expected != null);
var actualCount = new CountedSet(actual, comparer);
var expectedCount = new CountedSet(expected, comparer);
if (actualCount.Count != expectedCount.Count)
{
return(false);
}
if (actualCount.NullCount != expectedCount.NullCount)
{
return(false);
}
foreach (T item in actualCount)
{
if (actualCount.HowMany(item) != expectedCount.HowMany(item))
{
return(false);
}
}
return(true);
}
