public void TestInput213()
{
int n = 213;
Rearrange rearrange = new Rearrange(n);
int output = rearrange.Solution();
output.Should().Be(321, "For the input 213 the output mus be 321");
}
public void TestInput100000001()
{
int n = 100000001;
Rearrange rearrange = new Rearrange(n);
int output = rearrange.Solution();
output.Should().BeNegative("For a result greather than 100000000 the return= must be -1");
}
public void TestInputNegative()
{
int n = -1;
Rearrange rearrange = new Rearrange(n);
Action action = () => rearrange.Solution();
action.Should().Throw <Exception>().WithMessage("The input should be a non-negative number");
}
public void TestInput553()
{
int n = 553;
Rearrange rearrange = new Rearrange(n);
int output = rearrange.Solution();
output.Should().Be(553, "For the input 553 the output mus be 553");
}
