public void RotateArrayTests()
{
var nums = new[] { 1, 2, 3, 4, 5, 6, 7 };
var k = 3;
var solver = new RotateArray();
solver.Solution(nums, k);
Assert.AreEqual(nums, new [] { 5, 6, 7, 1, 2, 3, 4 });
}