public void StandardTenderStrategyCalculateThrowsInvalidCurrencyExceptionWhenNoDenominationsFound()
{
mockCurrency.Setup(p => p.AllDenominations).Returns(new List <Money>()
{
});
ITenderStrategy tenderStrategy = new StandardTenderStrategy();
Assert.Throws <InvalidCurrencyException>(() => tenderStrategy.Calculate(mockCurrency.Object, 0, 0));
}
public void StandardTenderStrategySubtractsCorrectlyFromThePriceBasedOnOddDecimalDenominations()
{
mockCurrency.Setup(p => p.AllDenominations).Returns(new List <Money>()
{
new Bill(.25m, "quarter", "quarters")
});
ITenderStrategy tenderStrategy = new StandardTenderStrategy();
var actual = tenderStrategy.Calculate(mockCurrency.Object, 1, 2.00m);
foreach (Money money in actual.AllDenominations) // mockCurrency.Object.AllDenominations)
{
Assert.Equal(4, money.Count); // price - tender = 4 quarters in change
}
}
public void StandardTenderStrategyReturnsCurrentyWithNoMoneyValues()
{
mockCurrency.Setup(p => p.AllDenominations).Returns(new List <Money>()
{
new Bill(1, "test", "tests")
});
ITenderStrategy tenderStrategy = new StandardTenderStrategy();
var actual = tenderStrategy.Calculate(mockCurrency.Object, 0, 0);
foreach (Money money in actual.AllDenominations) // mockCurrency.Object.AllDenominations)
{
Assert.Equal(0, money.Count); // due to the "ToString" override being used, we have to test the counts.
} // Consider refactoring ToString. Hard testing indicates a design flaw.
}
public void StandardTenderStrategySubtractsCorrectlyFromThePriceBasedOnNonDecimalDenominations()
{
mockCurrency.Setup(p => p.AllDenominations).Returns(new List <Money>()
{
new Bill(1, "dollar", "dollars")
});
ITenderStrategy tenderStrategy = new StandardTenderStrategy();
var actual = tenderStrategy.Calculate(mockCurrency.Object, 1, 3);
// test that our "1 dollar bill" is added 2 times during the process for standard strategy for change
// (meaning that the price is recuded each time accordingly)
foreach (Money money in actual.AllDenominations) // mockCurrency.Object.AllDenominations)
{
Assert.Equal(2, money.Count); // price - tender = 2 dollars in change
}
}
public void StandardCalculatesZeroTenderWhenTenderIsLessThanPrice()
{
mockCurrency.Setup(p => p.AllDenominations).Returns(new List <Money>()
{
new Bill(10, "ten", "tens"),
new Bill(5, "five", "fives"),
new Bill(1, "dollar", "dollars"),
new Coin(.10m, "dime", "dimes"),
new Coin(.05m, "nickel", "nickels"),
new Coin(.01m, "penny", "pennies")
});
ITenderStrategy tenderStrategy = new StandardTenderStrategy();
decimal expected = 0.0m;
decimal actual = 0.0m;
var result = tenderStrategy.Calculate(mockCurrency.Object, 10.03m, 1.03m); // 0 in change
foreach (Money money in mockCurrency.Object.AllDenominations)
{
actual += (money.Count * money.Denomination);
}
Assert.Equal(expected, actual);
}
