public async void CalculateTrolley_WhenTrolleyInfoIsNull_ReturnsZero()
{
// Arrange
var sutTrolleyCalculator = new TrolleyCalculator2();
// Act
var result = await sutTrolleyCalculator.CalculateTrolley(null);
// Assert
result.Should().Be(0);
}
public async void CalculateTrolley_WhenTrolleyInfoIsValid_ReturnsCorrectMinimumTotal(TrolleyInfo trolleyInfo, decimal expectedTotal)
{
// Arrange
var sutTrolleyCalculator = new TrolleyCalculator2();
// Act
var result = await sutTrolleyCalculator.CalculateTrolley(trolleyInfo);
// Assert
result.Should().Be(expectedTotal);
}
public void CalculateTrolley_WhenTrolleyInfoPropertyIsNull_ThrowArgumentException(TrolleyInfo trolleyInfo)
{
// Arrange
var sutTrolleyCalculator = new TrolleyCalculator2();
// Act
Func <Task> action = async() => await sutTrolleyCalculator.CalculateTrolley(trolleyInfo);
// Assert
action.Should().ThrowExactlyAsync <ArgumentException>()
.WithMessage("Products, Quantities and Specials properties cannot be null.");
}
