public void WhenMakingATrade_JackCannotGiveHisCowAway()
{
// Arrange
Jack jack;
Action action;
// Act
jack = new Jack();
action = () => jack.TradeCowForBeans(0);
// Assert
Assert.Throws <InvalidOperationException>(action);
}
public void WhenMakingATrade_JackShouldNotBeGreedy(int beans)
{
// Arrange
Jack jack;
Action action;
// Act
jack = new Jack();
action = () => jack.TradeCowForBeans(beans);
// Assert
Assert.Throws <InvalidOperationException>(action);
}
public void WhenMakingATrade_JackShouldOnlyBeAbleToSellHisCowForBetweenOneAndFiveBeans(int beans)
{
// Arrange
Jack jack;
// Act
jack = new Jack();
jack.TradeCowForBeans(beans);
// Assert
Assert.Equal(0, jack.Cows);
Assert.Equal(beans, jack.MagicBeans);
}