}

    @Test
    @DisplayName("Test Response interface methods - getGrantedCredits")
    void testGetGrantedCredits() {
        // Given
        int expectedCredits = 64;
        when(response.getGrantedCredits()).thenReturn(expectedCredits);

        // When
        int actualCredits = response.getGrantedCredits();

        // Then
        assertEquals(expectedCredits, actualCredits);

        void testGetGrantedCredits() {
            int credits = 10;
            response.setCreditForTest(credits);

            assertEquals(credits, response.getGrantedCredits());
        }
    }

    @Nested
    @DisplayName("Payload Handling Tests")
    class PayloadHandlingTests {

        @Test
        @DisplayName("Should handle response with retained payload")

            this.received = true;
        }

        @Override
        public void clearReceived() {
            this.received = false;
        }

        @Override
        public int getGrantedCredits() {
            return 1;
        }

        @Override
        public int getErrorCode() {
            return errorCode;
        }

        @Override

        void testGetGrantedCredits() {
            int credits = 15;
            echoResponse.setCredit(credits);

            assertEquals(credits, echoResponse.getGrantedCredits());
        }
    }

    @Nested
    @DisplayName("Error Code Tests")
    class ErrorCodeTests {

        @Test
        @DisplayName("Should get error code from status")

            this.received = true;
        }

        @Override
        public void clearReceived() {
            this.received = false;
        }

        @Override
        public int getGrantedCredits() {
            return this.grantedCredits;
        }

        @Override
        public int getErrorCode() {
            return this.errorCode;
        }

        @Override

            assertNull(testBlock.getNextResponse());
            assertFalse(testBlock.isCancel());
            assertEquals(1, testBlock.getCreditCost());
            assertEquals(1, testBlock.getGrantedCredits());
        }

        @Test
        @DisplayName("Test prepare method")
        void testPrepare() {
            CommonServerMessageBlockRequest nextRequest = mock(CommonServerMessageBlockRequest.class);

     */
    @Override
    public int getCreditCost() {
        return 1;
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.util.transport.Response#getGrantedCredits()
     */
    @Override
    public int getGrantedCredits() {
        return 1;
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.util.transport.Request#setRequestCredits(int)
     */
    @Override