public static bool IsOfColor(this BasePlate plate, Color color)
{
if (plate is SushiPlate)
{
SushiPlate sushiPlate = (SushiPlate)plate;
return(sushiPlate.Color.Equals(color));
}
return(false);
}
public void PriceServiceShouldCalculateCorrectValuesForSinglePlate_Test()
{
// Arrange
SushiPlate[] plates = new SushiPlate[] { greyPlate };
// Act
decimal total = calculatorService.CalculateTotalPrice(plates);
// Assert
Assert.Equal(GREY_PLATE_PRICE, total);
}
public void PriceServiceShouldCalculateCorrectValuesForMultiplePlates_Test()
{
// Arrange
SushiPlate[] plates = new SushiPlate[] { greyPlate, greenPlate };
decimal expectedTotal = GREY_PLATE_PRICE + GREEN_PLATE_PRICE;
// Act
decimal total = calculatorService.CalculateTotalPrice(plates);
// Assert
Assert.Equal(expectedTotal, total);
}
public void PriceServiceShouldCalculateCorrectValuesAsReqExample3_UsingLiteral_Test()
{
// Arrange
SushiPlate[] plates = new SushiPlate[] { greyPlate, greenPlate, yellowPlate, redPlate, bluePlate };
decimal expectedTotal = 14.75m;// GREY_PLATE_PRICE * greyPlateQuantity;
// Act
decimal total = calculatorService.CalculateTotalPrice(plates);
// Assert
Assert.Equal(expectedTotal, total);
}
public void PriceServiceShouldThrowExceptionWhenParamIsNull_Test()
{
// Arrange
MethodInfo methodInfo = calculatorService.GetType().GetMethod("GetPlatePrice");
ParameterInfo[] parameterInfos = methodInfo.GetParameters();
ParameterInfo parameterInfo = parameterInfos[0];
string plateParamName = parameterInfo.Name;
SushiPlate plate = null;
// Act
Action nullPlateMethodCall = () => this.calculatorService.GetPlatePrice(plate);
// Assert
ArgumentNullException argumentNullException = Assert.Throws <ArgumentNullException>(nullPlateMethodCall);
Assert.Contains(plateParamName, argumentNullException.Message);
}
public decimal GetPlatePrice(BasePlate plate)
{
if (plate == null)
{
throw new ArgumentNullException(nameof(plate));
}
if (plate is SushiPlate)
{
SushiPlate sushiPlate = (SushiPlate)plate;
switch (sushiPlate.Color)
{
case Color.Grey:
return(4.95m);
case Color.Green:
return(3.95m);
case Color.Yellow:
return(2.95m);
case Color.Red:
return(1.95m);
case Color.Blue:
return(0.95m);
default:
throw new ArgumentOutOfRangeException(INVALID_ENUM_VALUE_EXCEPTION);
}
}
else if (plate is SoupPlate)
{
return(2.5m);
}
else
{
throw new ArgumentException("No price definition available for the plate of type [" + plate.GetType().ToString() + "]");
}
}
