Create unit test for failed deposits

tests/test_depositMoney.c

@@ -32,5 +32,30 @@ void test_depositSpecificAmount(void) {
     for (int i = 0; i < length; i++) {
         TEST_ASSERT_TRUE(result[i]);
     }
+}
+
+    void test_depositSpecificAmountFail(void) {
+
+        /* Arrange */
+
+        int length                      = 5;
+        int userIDs[] = {1234,1235,1236,1237,1238};
+        float amountToDeposit[]        = {-23, -3, -234, -23, -400};
+
+        bool result[length];
+
+        /* Act */
 
+        for (int i = 0; i < length; i++) {
+            result[i] = depositSpecificAmount( userIDs[i], amountToDeposit[i] );
+        }
+
+        /* Assert */
+
+        for (int i = 0; i < length; i++) {
+            TEST_ASSERT_FALSE(result[i]);
+        }
 }
+    
+
+