public void WhenAddingCash_ThenItOnlyAccepts_100_50_20_10_5_1_050_025(decimal expected)
{
var machine = new VendingMachine();
machine.AddCash(expected);
Assert.AreEqual(expected, machine.GetBalance());
}
public void WhenUserCancelledRequest_ThenItShouldReturnRefundAndResetMachine()
{
var machine = new VendingMachine();
const decimal amount = 100.0M;
machine.AddCash(amount);
var result = machine.Refund();
Assert.AreEqual(amount, result);
Assert.AreEqual(0, machine.GetBalance());
Assert.IsEmpty(machine.GetSelectedProduct());
}
public void WhenUserPurchases_ThenItShouldReturnTheProductAndChange(string product, decimal cash1, decimal cash2, decimal change)
{
var machine = new VendingMachine();
machine.AddCash(cash1);
machine.AddCash(cash2);
machine.SelectProduct(product);
var(item1, item2) = machine.Purchase();
Assert.AreEqual(change, item2);
Assert.AreEqual(product, item1);
Assert.AreEqual(0, machine.GetBalance());
Assert.IsEmpty(machine.GetSelectedProduct());
}
public void WhenVendingMachineStarts_ThenBalanceShouldBeZero()
{
var machine = new VendingMachine();
Assert.AreEqual(0, machine.GetBalance());
}
