FINERACT-2156: Confirm existance of elements before accessing them #4202
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@adamsaghy this is now ready for review |
| @@ -1594,12 +1594,19 @@ public void validateAccountBalanceDoesNotBecomeNegative(final String transaction | |||
| public void validateAccountBalanceDoesNotViolateOverdraft(final List<SavingsAccountTransaction> savingsAccountTransaction, | |||
| final BigDecimal amountPaid) { | |||
| if (savingsAccountTransaction != null) { | |||
| SavingsAccountTransaction savingsAccountTransactionFirst = savingsAccountTransaction.get(0); | |||
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Would you mind to simplify the logic a little bit further?
You can merge the savingsAccountTransaction != null and savingsAccountTransaction.size() > 0 condition together and if they are TRUE take the running balance of the first element otherwise it is BigDecimal.ZERO (if there are no any transaction the running balance must be 0).
After you can deduct the amountPaid from the above balance and if the balance is negative and allowOverdraft is FALSE then InsufficientAccountBalanceException to be thrown.
I believe it would be easier to read and cover better the requirements!
Also kindly asking you to write a test (it can be unit tests), which covers the following situations:
savingsAccountTransactionis empty andamountPaidis positive andallowOverdraft = true-> No exception!savingsAccountTransactionis empty andamountPaidis positive andallowOverdraft = false-> Exception to be thrown!savingsAccountTransactionis not empty andamountPaidis positive andamountPaidis higher than the running balance of the 1st transaciton andallowOverdraft = true-> No exception!savingsAccountTransactionis not empty andamountPaidis positive andamountPaidis lower than the running balance of the 1st transaction andallowOverdraft = false-> Exception to be thrown!savingsAccountTransactionis not empty andamountPaidis positive andamountPaidis equal with the running balance of the 1st transaction andallowOverdraft = false-> No exception!
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