public void CopyTo_GivenASufficienlySizedArrayAndAnIndexOf2_ShouldCopyTheKeysInTheSkiplistToTheArrayInOrderFromIndex2
(Skiplist <int> sut, List <int> keys)
{
// Fixture setup
var expectedResult = new[] { 0, 0, 0 }.Concat(keys.OrderBy(x => x)).ToArray();
// Exercise system
var result = new int[expectedResult.Count()];
sut.CopyTo(result, 3);
// Verify outcome
Assert.Equal(expectedResult, result);
// Teardown
}