public void update_a_drink()
{
Drink aDrink = new Drink {
Name = aDrinkName, Quantity = aQuantity
};
drinkRepository.Get(aDrinkName).Returns(aDrink);
var result = controller.Update(aDrink);
drinkRepository.Received(1).Update(aDrinkName, aDrink);
result.Should().BeOfType <NoContentResult>();
((NoContentResult)result).StatusCode.ShouldBeEquivalentTo(204);
}
