update

src/test/java/rocks/zipcode/quiz5/fundamentals/calculator/AddTest.java

     @Test
     public void test1() {
         // given
-        test(98.5, 10.5, 88.5);
+        test(99.0, 10.5, 88.5);
     }
 
     @Test

src/test/java/rocks/zipcode/quiz5/objectorientation/bankaccount/DepositPositiveTest.java

 
     @Test(expected = IllegalArgumentException.class)
     public void test2() {
-        test(10.0, 50.0);
+        test(10.0, -50.0);
     }
 
     @Test(expected = IllegalArgumentException.class)
     public void test3() {
-        test(55.0, 500.0);
+        test(55.0, -500.0);
     }
 
     @Test(expected = IllegalArgumentException.class)
     public void test4() {
-        test(78.0, 90.0);
+        test(78.0, -90.0);
     }
 
-    public void test(Double initialBalance, Double witdrawalAmount) {
+    public void test(Double initialBalance, Double depositAmount) {
         // given
-        Double expected = initialBalance + witdrawalAmount;
+        Double expected = initialBalance + depositAmount;
         BankAccount bankAccount = new BankAccount();
         Transactable transactable = (Transactable)bankAccount;
         bankAccount.setBalance(initialBalance);
 
         // when
-        transactable.deposit(witdrawalAmount);
+        transactable.deposit(depositAmount);
         Double actual = transactable.getBalance();
 
         // then