assertTrue(length > 0);
        verify(mockDigest).sign(eq(buffer), eq(0), eq(length), eq(testBlock), any());
    }

    @Test
    @DisplayName("Test decode basic message")
    void testDecodeBasicMessage() throws SMBProtocolDecodingException {
        testBlock = new TestAndXServerMessageBlock(mockConfig, (byte) 0x25) {
            @Override
            protected int readHeaderWireFormat(byte[] buffer, int bufferIndex) {

            verify(mockDigest).sign(eq(buffer), eq(0), eq(length), eq(testBlock), any());
        }

        @Test
        @DisplayName("Test decode basic message")
        void testDecodeBasicMessage() throws SMBProtocolDecodingException {
            byte[] buffer = new byte[1024];
            System.arraycopy(SMBUtil.SMB_HEADER, 0, buffer, 0, SMBUtil.SMB_HEADER.length);