public void CanAddDelivery_NullDelivery_ThrowsException()
{
// Arrange
DeliveryValidator deliveryValidator = new DeliveryValidator();
Delivery delivery = null;
// Act
// Assert
Assert.ThrowsException <ArgumentNullException>(() => deliveryValidator.CanAddDelivery(delivery));
}
public void CanAddDelivery_DeliveryHasEmptyPrice_ReturnErrorMessage()
{
// Arrange
DeliveryValidator deliveryValidator = new DeliveryValidator();
Delivery delivery = new Delivery();
delivery.Name = "Name";
// Act
List <KeyValuePair <string, string> > result = deliveryValidator.CanAddDelivery(delivery);
// Assert
Assert.IsNotNull(result);
Assert.AreEqual(1, result.Count);
Assert.AreEqual("Price", result[0].Key);
}