testMessage.setBytesRead(0);

            int len = testMessage.decode(buffer, 0);

            assertTrue(len > 0);
            assertNotNull(testMessage.getErrorData());
            assertEquals(5, testMessage.getErrorData().length);
        }

        @Test
        @DisplayName("Should handle compound messages")
        void testDecodeCompound() throws SMBProtocolDecodingException {

        assertNotNull(resp.getErrorData(), "Error data should be decoded");
        assertEquals(3, resp.getErrorData().length);
        assertEquals(2, resp.getErrorContextCount());
        assertArrayEquals(new byte[] { (byte) 0xAA, (byte) 0xBB, (byte) 0xCC }, resp.getErrorData());
    }

    @Test
    void throwsOnUnexpectedStructureSize() throws Exception {

        // When error path is taken, no blob should be parsed
        assertNull(resp.getBlob(), "Blob should be null on error path");
        assertNotNull(resp.getErrorData(), "Error data should be present");
        assertArrayEquals(err, resp.getErrorData());
    }

    @Test
    @DisplayName("Invalid structure size should throw during decode")
    void testInvalidStructureSizeThrows() {

    }

    /**
     * Gets the error data associated with this message.
     *
     * @return the errorData
     */
    public final byte[] getErrorData() {
        return this.errorData;
    }

    /**
     * Gets the error context count for this message.
     *
     * @return the errorContextCount
     */