}

    /**
     * Gets a PrintWriter for writing response content.
     * Returns a dummy PrintWriter that writes to a ByteArrayOutputStream.
     *
     * @return A PrintWriter for response output
     * @throws IOException If an I/O error occurs
     */
    @Override
    public PrintWriter getWriter() throws IOException {
        // dummy stream
        return new PrintWriter(new ByteArrayOutputStream());
    }

        file1.delete();
    }
    */

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);
        kuromojiFile = new KuromojiFile("1", "dummy", new Date());
        List<KuromojiItem> itemList = new ArrayList<>();
        itemList.add(new KuromojiItem(1, "token1", "seg1", "reading1", "pos1"));
        itemList.add(new KuromojiItem(2, "token2", "seg2", "reading2", "pos2"));

            // Simulate thumbnail generation
            try {
                if (!outputFile.exists()) {
                    outputFile.createNewFile();
                }
                // Write some dummy content to simulate actual thumbnail
                Files.write(outputFile.toPath(), ("thumbnail-" + thumbnailId).getBytes());
                return true;
            } catch (IOException e) {
                return false;

        file1.delete();
    }
    */

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);
        synonymFile = new SynonymFile("1", "dummy", new Date());
        List<SynonymItem> itemList = new ArrayList<>();
        itemList.add(new SynonymItem(1, new String[] { "a1" }, new String[] { "A1" }));

        assertEquals(UserAgentType.OPERA, userAgentHelper.getUserAgentType());
    }

    @Test
    public void test_getUserAgentType_OTHER() {
        getMockRequest().addHeader("user-agent", "Dummy");
        assertEquals(UserAgentType.OTHER, userAgentHelper.getUserAgentType());
    }

    @Test
    public void test_getUserAgentType_nullUserAgent() {
        getMockRequest().addHeader("user-agent", null);