/**
 * @author shinsuke
 * @author kaorufuzita
 */
public class TextUtilTest extends PlainTestCase {

    public void test_getContent() {
        assertEquals("", normalizeText((String) null, 100, -1, -1, false));
        assertEquals("", normalizeText("", 100, -1, -1, false));
        assertEquals("", normalizeText(" ", 100, -1, -1, false));
        assertEquals("", normalizeText("  ", 100, -1, -1, false));

   */
  @JvmOverloads
  fun charset(defaultValue: Charset? = null): Charset? {
    val charset = parameter("charset") ?: return defaultValue
    return try {
      Charset.forName(charset)
    } catch (_: IllegalArgumentException) {
      defaultValue // This charset is invalid or unsupported. Give up.
    }
  }

  /**
   * Returns the parameter [name] of this media type, or null if this media type does not define
   * such a parameter.

  public void testCompute_absentToAbsent() {
    assertNull(
        "Map.compute(absent, functionReturningNull) should return null",
        getMap()
            .compute(
                k3(),
                (k, v) -> {
                  assertEquals(k3(), k);
                  assertNull(v);
                  return null;
                }));
    expectUnchanged();
    assertEquals(getNumElements(), getMap().size());
  }

   * a "null sentinel" to take its place. When the time comes to convert it back to a {@code T} to
   * return to a caller, the code needs to a way to return {@code null} from a method that returns
   * "plain {@code T}." This API provides that.
   */
  @SuppressWarnings({"nullness", "TypeParameterUnusedInFormals", "ReturnMissingNullable"})

        DeferredFileOutputStream dfos = null;
        try (DeferredFileOutputStream out = new DeferredFileOutputStream(cacheFileSize, "fess-extractor-", ".out", null)) {
            dfos = out;
            CopyUtil.copy(in, out);
            out.flush();

            Extractor extractor = StringUtil.isBlank(mimeType) ? null : extractorFactory.getExtractor(mimeType);
            if (extractor == null) {

            return null;
        }
    }

    private SSLSocketFactory getSSLSocketFactory(CurlHelper curlHelper) {
        try {
            Field field = CurlHelper.class.getDeclaredField("sslSocketFactory");
            field.setAccessible(true);
            return (SSLSocketFactory) field.get(curlHelper);
        } catch (Exception e) {
            return null;
        }
    }

        }

        @Test
        @DisplayName("Should handle null root cause")
        void testConstructorWithNullRootCause() {
            TransportException exception = new TransportException((Throwable) null);

            assertNotNull(exception);
            assertNull(exception.getRootCause());
        }

        @Test
        @DisplayName("Should handle null message with root cause")

        this.text = String.join(SuggestConstants.TEXT_SEPARATOR, text);
        this.readings = readings;
        this.fields = fields != null ? fields : new String[] {};
        this.tags = tags != null ? tags : new String[] {};

        if (roles == null || roles.length == 0) {
            this.roles = new String[] { SuggestConstants.DEFAULT_ROLE };
        } else {
            this.roles = new String[roles.length];

    @Test
    public void testContaines() throws Exception {
        assertThat(list.contains(null), is(not(true)));
        assertThat(list.contains("1"), is(not(true)));
        list.addLast("1");
        assertThat(list.contains("1"), is(true));
        assertThat(list.contains("2"), is(not(true)));
        assertThat(list.contains(null), is(not(true)));
    }

    /**
     * @throws Exception
     */
    @Test

        userInfoHelper.setCookieSecure(null);

        MockletHttpServletRequest request = getMockRequest();
        request.addHeader("X-Forwarded-Proto", "https");

        assertTrue(userInfoHelper.isSecureCookie());
    }

    public void test_isSecureCookie_noRequest() {
        UserInfoHelper userInfoHelper = new UserInfoHelper();
        userInfoHelper.setCookieSecure(null);