public void Given4_ReturnsIV()
{
//arrange
var roman = new Roman();
//act
var actual = roman.ToRomanNumerals(4);
//assert
Assert.That(actual, Is.EqualTo("IV"));
}
public void GivenX_ReturnsY(int number, string expected)
{
//arrange
var roman = new Roman();
//act
var actual = roman.ToRomanNumerals(number);
//assert
Assert.That(actual, Is.EqualTo(expected));
}
public void Given0_ReturnsEmptyString()
{
//arrange
var roman = new Roman();
//act
var actual = roman.ToRomanNumerals(0);
//assert
Assert.That(actual, Is.Empty);
}
public void GivenNegative_ShouldThrow()
{
//arrange
var roman = new Roman();
//act
//assert
Assert.That(() => roman.ToRomanNumerals(-1), Throws.TypeOf <ArgumentOutOfRangeException>()
.With.Property(nameof(ArgumentOutOfRangeException.ParamName))
.EqualTo("decimalValue"));
}
