test:wrote tes to track auditlogs

Author: Boyce007

lesson_17/bank/bank_app/src/main/java/com/codedifferently/lesson17/bank/BankAtm.java

@@ -47,11 +47,12 @@ public Set<CheckingAccount> findAccountsByCustomerId(UUID customerId) {
    * @param accountNumber The account number.
    * @param amount The amount to deposit.
    */
-  public void depositFunds(String accountNumber, double amount) {
+  public String depositFunds(String accountNumber, double amount) {
     CheckingAccount account = getAccountOrThrow(accountNumber);
     account.deposit(amount);
     atmLog.addLog(
         new AuditLogInfo(TranscationType.DEPOSIT, amount, account.getBalance(), accountNumber));
+    return atmLog.showLog();
   }
 
   /**
@@ -60,12 +61,13 @@ public void depositFunds(String accountNumber, double amount) {
    * @param accountNumber The account number.
    * @param check The check to deposit.
    */
-  public void depositFunds(String accountNumber, Check check) {
+  public String depositFunds(String accountNumber, Check check) {
     CheckingAccount account = getAccountOrThrow(accountNumber);
     check.depositFunds(account);
     atmLog.addLog(
         new AuditLogInfo(
             TranscationType.DEPOSIT, check.amount, account.getBalance(), accountNumber));
+    return atmLog.showLog();
   }
 
   /**
@@ -74,11 +76,12 @@ public void depositFunds(String accountNumber, Check check) {
    * @param accountNumber
    * @param amount
    */
-  public void withdrawFunds(String accountNumber, double amount) {
+  public String withdrawFunds(String accountNumber, double amount) {
     CheckingAccount account = getAccountOrThrow(accountNumber);
     account.withdraw(amount);
     atmLog.addLog(
         new AuditLogInfo(TranscationType.WITHDRAWAL, -amount, account.getBalance(), accountNumber));
+    return atmLog.showLog();
   }
 
   /**

lesson_17/bank/bank_app/src/test/java/com/codedifferently/lesson17/bank/BankAtmTest.java

@@ -112,4 +112,26 @@ void testWithdrawFunds_AccountNotFound() {
         .isThrownBy(() -> classUnderTest.withdrawFunds(nonExistingAccountNumber, 50.0))
         .withMessage("Account not found");
   }
+
+  @Test
+  void testDepositFunds_auditLogIsCorrect() {
+    // When
+    String actual = classUnderTest.depositFunds("123456789", 50);
+    String expected = "123456789 DEPOSIT 50.0 150.0";
+    assertThat(actual.equals(expected));
+  }
+
+  @Test
+  void testDepositFunds_auditLogIsCorrectWithMultipleDebitsAndCredits() {
+
+    Check check = new Check("987654321", 100.0, account1);
+    // When
+    classUnderTest.depositFunds("123456789", 50);
+    classUnderTest.depositFunds("987654321", 150);
+    classUnderTest.depositFunds("123456789", check);
+    String actual = classUnderTest.withdrawFunds("123456789", 35.0);
+    String expected =
+        "123456789 DEPOSIT 50.0 150.0 \n 987654321 DEPOSIT 150.0 350.0 \n 123456789 DEPOSIT 100.0 450.0 \n 123456789 WITHDRAWAL -35.0 415";
+    assertThat(actual.equals(expected));
+  }
 }