public void CalculateAnnualCosts_Throws_Argument_Exception_Less_Then_Zero()
{
// Assert
var inValidConsumption = -1;
var product = new PackagedProduct();
// Act
product.CalculateAnnualCosts(inValidConsumption);
}
public void CalculateAnnualCosts_Returns_23600()
{
// Assert
var expectedAnnualCosts = 23600;
var validConsumption = 80000;
var product = new PackagedProduct();
// Act
product.CalculateAnnualCosts(validConsumption);
// Arrange
Assert.IsNotNull(product);
Assert.AreEqual(expectedAnnualCosts, product.AnnualCosts);
}