public void Subtract_From_Balance_Raises_Event()
{
SimpleWallet wallet = new SimpleWallet();
decimal walletBalance = 0;
wallet.Add(10);
IVendingMachineInternal machineInternal = new FakeVendingMachineInternal();
wallet.Init(machineInternal);
((IVendingMachineExternal)machineInternal).WalletValueChanged += balance => { walletBalance = balance; };
wallet.Subtract(5);
Assert.That(walletBalance.Equals(5));
}
public void Add_In_Balance_Raises_Event()
{
//Arrange
IWallet wallet = new SimpleWallet();
//Act
decimal walletBalance = 0;
IVendingMachineInternal machineInternal = new FakeVendingMachineInternal();
wallet.Init(machineInternal);
((IVendingMachineExternal)machineInternal).WalletValueChanged += balance => { walletBalance = balance; };
wallet.Add(10);
//Assert
Assert.That(walletBalance.Equals(10));
}