public void GetAllNumbers()
{
int[] arr = { 0, 1, 2, 3, 4, 5 };
List <int> expectedList = arr.ToList <int>();
CollectionAssert.AreEqual(expectedList, GenerateNumbers.GetAllNumbers(5));
}
public void GetAllNumbersWithNullArgument()
{
Assert.AreEqual(null, GenerateNumbers.GetAllNumbers(-19));
}