public void UniqueInOrder_CollectionContainsNull_RemovesNullFromReturnedValue()
{
var sequence = "AAAABBBCCDAABBB";
var expected = new[] { 'A', 'B', 'C', 'D', 'A', 'B' };
var actual = CollectionParser.UniqueInOrder(sequence.Cast <char>()).ToArray();
CollectionAssert.AreEqual(expected, actual);
}
public void UniqueInOrder_EmptyCollection_ReturnsEmpty()
{
var actual = CollectionParser.UniqueInOrder(Enumerable.Empty <char>());
CollectionAssert.AreEqual(new char[0], actual.ToArray(), string.Join(',', actual));
}