/*
    * ====================================================================
    * 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.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   */
  
  package org.apache.hc.core5.http.impl;
  
  import static org.junit.jupiter.api.Assertions.assertAll;
  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.HashSet;
  import java.util.Set;
  import java.util.stream.Collectors;
  import java.util.stream.Stream;
  
  import org.apache.hc.core5.http.Header;
  import org.apache.hc.core5.http.HttpHeaders;
  import org.apache.hc.core5.http.MessageHeaders;
  import org.apache.hc.core5.http.message.BasicHeader;
  import org.apache.hc.core5.http.message.HeaderGroup;
  import org.junit.jupiter.api.Assertions;
  import org.junit.jupiter.api.Test;
  
  public class IncomingEntityDetailsTest {
  
      @Test
      public void getContentLengthEmpty() {
          final MessageHeaders messageHeaders = new HeaderGroup();
          final IncomingEntityDetails incomingEntityDetails = new IncomingEntityDetails(messageHeaders);
          assertAll(
                  () -> assertEquals(-1, incomingEntityDetails.getContentLength()),
                  () -> assertNull(incomingEntityDetails.getContentType()),
                  () -> assertNull(incomingEntityDetails.getContentEncoding()),
                  () -> assertEquals(incomingEntityDetails.getTrailerNames().size(), 0)
          );
      }
  
      @Test
      public void messageHeadersNull() {
          Assertions.assertThrows(NullPointerException.class, () -> new IncomingEntityDetails(null),
                  "Message Header Null");
      }
  
      @Test
      public void getContentLength() {
          final MessageHeaders messageHeaders = new HeaderGroup();
          final HeaderGroup headerGroup = new HeaderGroup();
          final Header header = new BasicHeader("name", "value");
          headerGroup.addHeader(header);
          final IncomingEntityDetails incomingEntityDetails = new IncomingEntityDetails(messageHeaders);
          assertAll(
                  () -> assertEquals(-1, incomingEntityDetails.getContentLength()),
                  () -> assertTrue(incomingEntityDetails.isChunked())
          );
      }
  
      @Test
      public void getTrailerNames() {
          final HeaderGroup messageHeaders = new HeaderGroup();
          final Header header = new BasicHeader(HttpHeaders.TRAILER, "a, b, c, c");
          messageHeaders.setHeaders(header);
          final IncomingEntityDetails incomingEntityDetails = new IncomingEntityDetails(messageHeaders);
          final Set<String> incomingSet = incomingEntityDetails.getTrailerNames();
          assertAll(
                  () -> assertFalse(incomingSet.isEmpty()),
                  () -> assertTrue(incomingSet.containsAll(Stream.of("a", "b", "c")
                          .collect(Collectors.toCollection(HashSet::new))))
          );
      }
  
  }