public void ItThrowsWhenItIsLowerBound()
{
ValidationRule <int> sut = GetSut(2, "a");
Assert.Throws <ArgumentOutOfRangeException>(() => sut.Between(2, 4));
}
public void ItSucceedsWheBetween()
{
ValidationRule <int> sut = GetSut(3, "a");
sut.Between(2, 4);
}
public void ItThrowsWhenValueIsToBig()
{
ValidationRule <int> sut = GetSut(4, "a");
Assert.Throws <ArgumentOutOfRangeException>(() => sut.Between(2, 3));
}