assertNull(mockRequest.getNext(), "Next request should be null when mocked to do so.");
        verify(mockRequest, times(1)).getNext();
    }

    @Test
    void testGetResponse() {
        // Test case for getResponse method
        Response mockResponse = mock(Response.class); // Mock a response object
        when(mockRequest.getResponse()).thenReturn(mockResponse);

        assertTrue(result.endsWith("]"));
    }

    /**
     * Test method for {@link jcifs.internal.smb1.com.SmbComClose#getResponse()}.
     */
    @Test
    public void testGetResponse() {
        // Given
        SmbComClose smbComClose = new SmbComClose(config, 1, 1L);
        SmbComBlankResponse expectedResponse = new SmbComBlankResponse(config);
        smbComClose.setResponse(expectedResponse);

        assertEquals(response, result);
        verify(request, times(1)).initResponse(null);
    }

    @Test
    @DisplayName("Test getResponse returns the response message")
    void testGetResponse() {
        // Given
        when(request.getResponse()).thenReturn(response);

        // When
        CommonServerMessageBlockResponse result = request.getResponse();

        // Then

        // Verify multiple calls return the same instance
        assertSame(request, negotiation.getRequest());
    }

    @Test
    @DisplayName("getResponse should return the same response instance")
    void testGetResponse() {
        // Verify getResponse returns the exact same instance
        SmbNegotiationResponse response = negotiation.getResponse();
        assertSame(mockResponse, response);

    class ResponseTests {

        @Test
        @DisplayName("Should return null response by default")
        void testGetResponse() {
            assertNull(testMessage.getResponse());
        }

        @Test
        @DisplayName("Should accept response setting")
        void testSetResponse() {
            CommonServerMessageBlockResponse response = mock(CommonServerMessageBlockResponse.class);

            assertSame(response1, result);
            assertSame(response2, result.getNext());
        }

        @Test
        @DisplayName("setResponse should accept valid response")
        void testSetResponse() {
            TestServerMessageBlock2Response response = new TestServerMessageBlock2Response(mockConfig);

            testRequest.setResponse(response);