Add success test for withdrawSpecificAmount function

src/CustomerData.txt

@@ -3,18 +3,18 @@ ID=1234
 forename=Max
 Surname=Mustermann
 password=example
-balance=2390
+balance=2340
 
 1327=example
 ID=1327
 forename=Max
 Surname=Mustermann
 password=example
-balance=70
+balance=20
 
 1666=example
 ID=1666
 forename=Max
 Surname=Mustermann
 password=example
-balance=240
+balance=190

tests/test_withdrawMoney.c

@@ -41,6 +41,28 @@ void test_initiateWithdraw(void) {
     
 }
 
+void test_withdrawSpecificAmountSuccess(void) {
+
+   /* Arrange */
+
+   int user_id[3]   = {1234, 1327, 1666}; // user_ids from file for testing
+
+   bool result[3];
+
+   /* Act */
+   
+   for (int i = 0; i < 3; i++) {
+        result[i] = withdrawSpecificAmount(user_id[i], 50);
+    }   
+
+    /* Assert */
+    
+    for (int i = 0; i < 3; i++) {
+        TEST_ASSERT_TRUE(result[i]);     // Pass if withdrawal is successful
+    }
+   
+}
+