public static boolean withdrawTestMethod() {
    // scenario 1
    int[] coins = new int[] {1, 1, 5, 10, 0, 0, 0};
    int[] result = new int[] {4, 0, 1, 1, 2};
    int size = 4;
    int amount = 17;
    System.out.println("Scenario 1: " + Arrays.toString(coins));
    if (PiggyBank.withdraw(amount, coins, size).equals(result))
      return false;
    System.out.println("Scenario 1: " + Arrays.toString(coins));
    // scenario 2
    coins = new int[] {1, 1, 5, 5, 5, 10, 10, 25, 25, 0, 0, 0, 0};
    result = new int[] {3, 1, 1, 1, 0};
    size = 9;
    amount = 40;
    System.out.println(Arrays.toString(coins));
    int[] testResult = PiggyBank.withdraw(amount, coins, size);
    int newSize = 6;
    System.out.println(Arrays.toString(coins));
    System.out.println("New Balance: " + PiggyBank.getBalance(coins, newSize));
    if (testResult.equals(result))
      return false;
    // senario 3
    coins = new int[] {25, 25, 25, 25};
    result = new int[] {4, 4, 0, 0, 0};
    size = 4;
    amount = 100;
    if (PiggyBank.withdraw(amount, coins, size).equals(result))
      return false;
    return true;
  }