public void TestNormalOperations()
 {
     BuggyAccount account = new BuggyAccount();
     account.Debit(5);
     account.Debit(2);
 }
 public void TestNegativeCredit()
 {
     BuggyAccount account = new BuggyAccount();
     account.Credit(-1);
 }
 public void TestNegativeDebit()
 {
     BuggyAccount account = new BuggyAccount();
     account.Debit(-1);
 }
 public void TestGoToNegative()
 {
     BuggyAccount account = new BuggyAccount();
     account.Debit(5);
     Assert.AreEqual(account.Balance, -5);
 }