C# Account.Debit方法代码示例

 public void Transfer(Account source, Account destination, int amount)
 {
     lock (source)
     {
         lock (destination)
         {
             source.Debit(amount);
             destination.Credit(amount);
         }
     }
 }

    static void Main(string[] args)
    {
        /*
           *      Account Class Test
           */
          Console.WriteLine("**********     Account Class Test     **********");
          Console.WriteLine("");

          // Create new account
          decimal openningAmount = 65.12M;
          Account account = new Account(openningAmount);

          // Display openning balance
          Console.WriteLine("Openning balance for account is {0:C}", account.Balance);
          Console.WriteLine("");

          // Test withdraw amount exceeds balance
          decimal excessWithdraw = 1000M;
          account.Debit(excessWithdraw);
          Console.WriteLine("Try to withdraw {0:C} from account. Unchanged balance is {1:C}",
         excessWithdraw, account.Balance);
          Console.WriteLine("");

          // Test a proper withdraw amount
          decimal properWithdraw = 5.12M;
          account.Debit(properWithdraw);
          Console.WriteLine("Withdraw {0:C} from account. New balance is {1:C}", properWithdraw, account.Balance);
          Console.WriteLine("");

          // Test deposit into account
          decimal deposit = 0.01M;
          account.Credit(deposit);
          Console.WriteLine("Deposit {0:C} into account. New balance is {1:C}", deposit, account.Balance);
          Console.WriteLine("");

          // Test creating account with a negative openning balance
          openningAmount = -10M;
          Console.WriteLine("Try to create new account with {0:C}", openningAmount);
          try
          {
         Account negative = new Account(openningAmount);
          }
          catch (ArgumentOutOfRangeException e)
          {
         Console.WriteLine(e.Message);
          }
          finally
          {
         Console.WriteLine("");
          }

          /*
           *      SavingAccount Class Test
           */
          Console.WriteLine("");
          Console.WriteLine("**********     SavingAccount Class Test     **********");
          Console.WriteLine("");

          // Create new Saving Account
          decimal interestRate = 0.05M;
          openningAmount = 800M;
          SavingsAccount savingsAccount = new SavingsAccount(openningAmount, interestRate);

          // Display openning balance
          Console.WriteLine("Openning balance for savings account is {0:C}", savingsAccount.Balance);
          Console.WriteLine("Having an interest rate of {0:P}", savingsAccount.InterestRate);
          Console.WriteLine("");

          // Test deposit into account (from Account Class)
          deposit = 100M;
          savingsAccount.Credit(deposit);
          Console.WriteLine("Deposit {0:C} into savings account. New balance is {1:C}",
         deposit, savingsAccount.Balance);
          Console.WriteLine("");

          // Test calculate interest
          decimal interestAmount = savingsAccount.CalculateInterest();
          Console.WriteLine("Calculated amount from {0:P} interest is {1:C}", interestRate ,interestAmount);
          Console.WriteLine("");

          /*
           *      CheckingAccount Class Test
           */
          Console.WriteLine("");
          Console.WriteLine("**********     CheckingAccount Class Test     **********");
          Console.WriteLine("");

          // Create new Checking Account
          decimal transactionFee = 0.02M;
          openningAmount = 500M;
          CheckingAccount checkingAccount = new CheckingAccount(openningAmount, transactionFee);

          // Display openning balance
          Console.WriteLine("Openning balance for checking account is {0:C}", checkingAccount.Balance);
          Console.WriteLine("Having a transaction fee of {0:C}", checkingAccount.TransactionFee);
          Console.WriteLine("");

          // Test deposit into checking account (overrides Account Class)
          deposit = 100M;
          checkingAccount.Credit(deposit);
//.........这里部分代码省略.........

        public void ArrangeAndAct()
        {
            accountId = Guid.NewGuid();
            var account = new Account(accountId, 200);
            account.Debit(300);
            account.Debit(300);
            account.ClearEvents();
            account.Debit(300);

            events = account.UncommittedEvents.ToArray();
        }

 public void DebitTest_Insufficient()
 {
     Account target = new Account(15.00, 1, "test account", "11/12/12"); // TODO: Initialize to an appropriate value
     double amount = 25.00; // TODO: Initialize to an appropriate value
     double expected = 15.00; // TODO: Initialize to an appropriate value
     double actual;
     actual = target.Debit(amount);
     Assert.IsTrue((actual == expected), "Debit Test with insufficient funds passes.");
     Assert.IsFalse(actual != expected, "Debit Test with insufficient funds fails.");
 }

        public override void TransferMoney(decimal amt, Account.Account otherAccount)
        {
            var orders = getLockOrder(this, otherAccount as holdwaitAccount);//Resolve DeadLock

            lock (orders[0].Lock)
            {
                Thread.Sleep(20);
                lock (orders[1].Lock)
                {
                    this.Credit(amt);
                    otherAccount.Debit(amt);
                    Thread.Sleep(2);
                    Console.WriteLine(amt + " Transfered from " + this.orderNumber + " To " + otherAccount.orderNumber);
                }
            }
        }

        public override void TransferMoney(decimal amt, Account.Account otherAccount)
        {
            Mutex[] locks = { this.Lock, (otherAccount as MutexAccount).Lock };
            if (WaitHandle.WaitAll(locks, 1000))//All Locks or one approach
                try
                {
                    this.Credit(amt);
                    Thread.Sleep(20);
                    otherAccount.Debit(amt);

                    Console.WriteLine(amt + " Transfered from " + this.orderNumber + " To " + otherAccount.orderNumber);
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                }
                finally
                {
                    foreach (var Lock in locks)
                        Lock.ReleaseMutex();
                }
        }