public void TestMethod1()
{
int expected = 15;
int actual = InsertNumber.Insert(9, 3, 1, 2);
Assert.AreEqual(expected, actual);
}
public static void InsertTest(int n1, int n2, int i, int j, int result)
{
Assert.AreEqual(result, InsertNumber.Insert(n1, n2, i, j));
}