}

    /**
     * Test successful text extraction with default encoding (UTF-8).
     */
    public void test_getText_withDefaultEncoding() {
        final String testContent = "Test content テスト 日本語";
        final InputStream in = new ByteArrayInputStream(testContent.getBytes());

        final ExtractData result = textExtractor.getText(in, null);

        assertNotNull(result);
        assertNotNull(result.getContent());

        final String encrypted = cipher.encryptText(original);
        final String decrypted = cipher.decryptText(encrypted);

        assertThat(decrypted, is(original));
    }

    @Test
    public void testLongText() {
        final CachedCipher cipher = new CachedCipher();
        cipher.setKey("mySecretKey");

        final StringBuilder sb = new StringBuilder();
        for (int i = 0; i < 1000; i++) {