public void Add_NegativeInputNumbers_NegativesNotAllowedExceptionThrown()
{
NegativesNotAllowedException ex =
Assert.Throws <NegativesNotAllowedException>(() => calculator.Add("1,-2,3,4,-5"));
Assert.That(ex.Message, Is.EqualTo("Negatives not allowed. There are negative numbers: -2, -5"));
}
public void ItHandlesMultipleNegatives()
{
var expectedException = new NegativesNotAllowedException(-1, -2, -3);
var actualException = Assert.Throws <NegativesNotAllowedException>(() => this.adder.Add("-1,-2,-3"));
Assert.That(actualException.Message, Is.EqualTo(expectedException.Message));
}