assertTrue(result.contains("newFileName=" + newFileName));
    }

    /**
     * Test with null configuration
     */
    @Test
    @DisplayName("Test constructor with null configuration throws NullPointerException")
    public void testConstructorWithNullConfig() {
        // Given
        String oldFileName = "old.txt";
        String newFileName = "new.txt";

        trans2FindNext2 = new Trans2FindNext2(config, TEST_SID, TEST_RESUME_KEY, TEST_FILENAME, TEST_BATCH_COUNT, TEST_BATCH_SIZE);

        int newResumeKey = 0x5678;
        String newFilename = "newfile.txt";

        trans2FindNext2.reset(newResumeKey, newFilename);

        // Verify by writing parameters and checking the buffer
        byte[] buffer = new byte[256];
        int written = trans2FindNext2.writeParametersWireFormat(buffer, 0);