.isEqualTo("a"b<c>d&e"f'");
    // Test '\t', '\n' and '\r' are escaped.
    assertThat(xmlAttributeEscaper.escape("a\tb\nc\rd")).isEqualTo("a	b
c
d");
  }

  // Helper to assert common properties of xml escapers.
  static void assertBasicXmlEscaper(
      CharEscaper xmlEscaper, boolean shouldEscapeQuotes, boolean shouldEscapeWhitespaceChars) {
    // Simple examples (smoke tests)

        int written = (buffer[0] & 0xFF) | ((buffer[1] & 0xFF) << 8);
        int expected = level & 0xFFFF;
        assertEquals(expected, written);
    }

    // Helper method to extract string from buffer
    private String extractStringFromBuffer(byte[] buffer, int offset, int maxLen) {
        int end = offset;
        while (end < offset + maxLen && buffer[end] != 0) {
            end++;

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.helper;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.TimeUnit;

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.helper;

import static org.codelibs.core.stream.StreamUtil.split;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.concurrent.atomic.AtomicBoolean;

import java.io.InputStream;
import java.nio.charset.StandardCharsets;
import java.util.Date;

import org.codelibs.fess.dict.DictionaryException;
import org.codelibs.fess.dict.DictionaryFile.PagingList;
import org.codelibs.fess.helper.SystemHelper;
import org.codelibs.fess.unit.UnitFessTestCase;
import org.codelibs.fess.util.ComponentUtil;
import org.dbflute.optional.OptionalEntity;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestInfo;

import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.Constants;
import org.codelibs.fess.app.pager.FailureUrlPager;
import org.codelibs.fess.exception.ContainerNotAvailableException;
import org.codelibs.fess.helper.SystemHelper;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.opensearch.config.cbean.FailureUrlCB;
import org.codelibs.fess.opensearch.config.exbhv.FailureUrlBhv;

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.helper;

import java.util.concurrent.TimeUnit;

import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.unit.UnitFessTestCase;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestInfo;

        assertFalse(iterator.hasNext()); // Empty results

        // Verify tree handle was acquired
        verify(treeHandle).acquire();

        // Cleanup
        iterator.close();
    }

    // Helper method to create SMB URLs with proper handler
    private static URL createSmbURL(String urlString) throws MalformedURLException {
        return new URL(null, urlString, new jcifs.smb.Handler());
    }

        assertTrue(infoString.contains("sectPerAlloc=100"), "toString should contain sectPerAlloc");
        assertTrue(infoString.contains("bytesPerSect=512"), "toString should contain bytesPerSect");
    }

    // Helper methods to write numbers to byte array in little-endian format.
    private void writeInt2(int val, byte[] dst, int dstIndex) {
        dst[dstIndex++] = (byte) val;
        dst[dstIndex++] = (byte) (val >> 8);
    }

            }

            if (result.hasErrors()) {
                hasErrors = true;
            }
        }
        return new Result<>(hasErrors, modelsList, problemsList);
    }

    // helper to determine if problems contain error
    private static boolean hasErrors(Iterable<? extends ModelProblem> problems) {
        for (ModelProblem input : problems) {