assertTrue(output.contains("UTF-16 test"));
    }

    @Test
    public void test_run_withIOException() throws InterruptedException {
        InputStream faultyStream = new InputStream() {
            @Override
            public int read() throws IOException {
                throw new IOException("Test exception");
            }
        };

            }
        });

        mimeTypeHelper.init();

        try (InputStream is = new ByteArrayInputStream(SQL_REM_CONTENT.getBytes(StandardCharsets.UTF_8))) {
            assertEquals("text/x-sql", mimeTypeHelper.getContentType(is, "test.sql"));
        }
        try (InputStream is = new ByteArrayInputStream(SQL_REM_CONTENT.getBytes(StandardCharsets.UTF_8))) {

     * .
     */
    @Test
    public void testLoadPropertiesInputStream() {
        final InputStream inputStream = ResourceUtil.getResourceAsStream("org/codelibs/core/io/test.properties");
        final Properties properties = new Properties();
        PropertiesUtil.load(properties, inputStream);
        assertThat(properties.getProperty("hoge"), is("ほげ"));
    }

        }
    }

    /**
     * Test that try-with-resources handles null InputStream correctly.
     * Verifies that null InputStream doesn't cause NullPointerException during close.
     */
    @Test
    public void testTryWithResources_nullInputStreamSafety() {
        // This test demonstrates that try-with-resources handles null safely
        try (InputStream is = null) {
            if (is == null) {

        merger.merge(pt, null, null);
        merger.merge(null, pt, null);
    }

    @Test
    void testMergeJdk() throws Exception {
        try (InputStream isDominant = MavenToolchainMergerTest.class.getResourceAsStream("toolchains-jdks.xml");
                InputStream isRecessive = MavenToolchainMergerTest.class.getResourceAsStream("toolchains-jdks.xml")) {
            PersistedToolchains dominant = read(isDominant);

    byte[] big = newPreFilledByteArray(5);
    InputStream bin = new ByteArrayInputStream(big);
    InputStream lin = ByteStreams.limit(bin, 2);

    IOException expected = assertThrows(IOException.class, lin::reset);
    assertThat(expected).hasMessageThat().isEqualTo("Mark not set");
  }

  public void testLimit_markNotSupported() {
    InputStream lin = ByteStreams.limit(new UnmarkableInputStream(), 2);

        }

        public XmlReaderRequestBuilder url(URL url) {
            this.url = url;
            return this;
        }

        public XmlReaderRequestBuilder inputStream(InputStream inputStream) {
            this.inputStream = inputStream;
            return this;
        }

        public XmlReaderRequestBuilder reader(Reader reader) {
            this.reader = reader;
            return this;
        }

    }

    private static Future<String> readStreamAsync(InputStream inputStream) {
        return THREAD_POOL.submit((Callable<String>) () -> readFully(inputStream));
    }

    private static String readFully(InputStream inputStream) throws IOException {
        try (InputStream input = inputStream; ByteArrayOutputStream out = new ByteArrayOutputStream()) {
            byte[] buf = new byte[8192];

        // Simple tag 5
        InputStream s = new ByteArrayInputStream(new byte[] {});
        int tagNo = ASN1Util.readTagNumber(s, 0x05);
        assertEquals(5, tagNo);
    }

    @Test
    void testReadTagNumber_HighTag() throws IOException {
        // High tag number (31)
        InputStream s = new ByteArrayInputStream(new byte[] { 0x1F });

            throw new IORuntimeException(e);
        }
    }

    /**
     * Resets the {@link InputStream}.
     *
     * @param is the input stream (must not be {@literal null})
     * @see InputStream#reset()
     */
    public static void reset(final InputStream is) {
        assertArgumentNotNull("is", is);

        try {
            is.reset();
        } catch (final IOException e) {