// Path: src/main/java/org/apache/commons/fileupload2/util/FileItemHeadersImpl.java
// public class FileItemHeadersImpl implements FileItemHeaders, Serializable {
// 
//     /**
//      * Serial version UID, being used, if serialized.
//      */
//     private static final long serialVersionUID = -4455695752627032559L;
// 
//     /**
//      * Map of {@code String} keys to a {@code List} of
//      * {@code String} instances.
//      */
//     private final Map<String, List<String>> headerNameToValueListMap = new LinkedHashMap<>();
// 
//     /**
//      * {@inheritDoc}
//      */
//     @Override
//     public String getHeader(final String name) {
//         final String nameLower = name.toLowerCase(Locale.ENGLISH);
//         final List<String> headerValueList = headerNameToValueListMap.get(nameLower);
//         if (null == headerValueList) {
//             return null;
//         }
//         return headerValueList.get(0);
//     }
// 
//     /**
//      * {@inheritDoc}
//      */
//     @Override
//     public Iterator<String> getHeaderNames() {
//         return headerNameToValueListMap.keySet().iterator();
//     }
// 
//     /**
//      * {@inheritDoc}
//      */
//     @Override
//     public Iterator<String> getHeaders(final String name) {
//         final String nameLower = name.toLowerCase(Locale.ENGLISH);
//         List<String> headerValueList = headerNameToValueListMap.get(nameLower);
//         if (null == headerValueList) {
//             headerValueList = Collections.emptyList();
//         }
//         return headerValueList.iterator();
//     }
// 
//     /**
//      * Method to add header values to this instance.
//      *
//      * @param name name of this header
//      * @param value value of this header
//      */
//     public synchronized void addHeader(final String name, final String value) {
//         final String nameLower = name.toLowerCase(Locale.ENGLISH);
//         final List<String> headerValueList = headerNameToValueListMap.
//                 computeIfAbsent(nameLower, k -> new ArrayList<>());
//         headerValueList.add(value);
//     }
// 
// }


import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertTrue;
import java.util.Iterator;
import org.apache.commons.fileupload2.util.FileItemHeadersImpl;
import org.junit.jupiter.api.Test;
/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * 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.apache.commons.fileupload2;




/**
 * Unit tests {@link FileItemHeaders} and
 * {@link FileItemHeadersImpl}.
 */
public class FileItemHeadersTest {

    /**
     * @throws Exception
     */
    @Test
    public void testFileItemHeaders() throws Exception {
// Path: src/main/java/org/apache/commons/fileupload2/util/FileItemHeadersImpl.java
// public class FileItemHeadersImpl implements FileItemHeaders, Serializable {
// 
//     /**
//      * Serial version UID, being used, if serialized.
//      */
//     private static final long serialVersionUID = -4455695752627032559L;
// 
//     /**
//      * Map of {@code String} keys to a {@code List} of
//      * {@code String} instances.
//      */
//     private final Map<String, List<String>> headerNameToValueListMap = new LinkedHashMap<>();
// 
//     /**
//      * {@inheritDoc}
//      */
//     @Override
//     public String getHeader(final String name) {
//         final String nameLower = name.toLowerCase(Locale.ENGLISH);
//         final List<String> headerValueList = headerNameToValueListMap.get(nameLower);
//         if (null == headerValueList) {
//             return null;
//         }
//         return headerValueList.get(0);
//     }
// 
//     /**
//      * {@inheritDoc}
//      */
//     @Override
//     public Iterator<String> getHeaderNames() {
//         return headerNameToValueListMap.keySet().iterator();
//     }
// 
//     /**
//      * {@inheritDoc}
//      */
//     @Override
//     public Iterator<String> getHeaders(final String name) {
//         final String nameLower = name.toLowerCase(Locale.ENGLISH);
//         List<String> headerValueList = headerNameToValueListMap.get(nameLower);
//         if (null == headerValueList) {
//             headerValueList = Collections.emptyList();
//         }
//         return headerValueList.iterator();
//     }
// 
//     /**
//      * Method to add header values to this instance.
//      *
//      * @param name name of this header
//      * @param value value of this header
//      */
//     public synchronized void addHeader(final String name, final String value) {
//         final String nameLower = name.toLowerCase(Locale.ENGLISH);
//         final List<String> headerValueList = headerNameToValueListMap.
//                 computeIfAbsent(nameLower, k -> new ArrayList<>());
//         headerValueList.add(value);
//     }
// 
// }


// Path: src/test/java/org/apache/commons/fileupload2/FileItemHeadersTest.java
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertTrue;
import java.util.Iterator;
import org.apache.commons.fileupload2.util.FileItemHeadersImpl;
import org.junit.jupiter.api.Test;

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * 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.apache.commons.fileupload2;




/**
 * Unit tests {@link FileItemHeaders} and
 * {@link FileItemHeadersImpl}.
 */
public class FileItemHeadersTest {

    /**
     * @throws Exception
     */
    @Test
    public void testFileItemHeaders() throws Exception {
        final FileItemHeadersImpl aMutableFileItemHeaders = new FileItemHeadersImpl();