/*
    * ====================================================================
    * 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 org.apache.hc.core5.http.ContentLengthStrategy;
  import org.apache.hc.core5.http.HttpMessage;
  import org.apache.hc.core5.http.NotImplementedException;
  import org.apache.hc.core5.http.ProtocolException;
  import org.apache.hc.core5.http.ProtocolVersion;
  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 TestDefaultContentLengthStrategy {
  
      static class TestHttpMessage extends HeaderGroup implements HttpMessage {
  
          private static final long serialVersionUID = 1L;
  
          @Override
          public ProtocolVersion getVersion() {
              return null;
          }
  
          @Override
          public void addHeader(final String name, final Object value) {
              addHeader(new BasicHeader(name, value));
          }
  
          @Override
          public void setHeader(final String name, final Object value) {
              setHeader(new BasicHeader(name, value));
          }
  
          @Override
          public void setVersion(final ProtocolVersion version) {
          }
  
      }
  
      @Test
      public void testEntityWithChunkTransferEncoding() throws Exception {
          final ContentLengthStrategy lenStrategy = new DefaultContentLengthStrategy();
          final HttpMessage message = new TestHttpMessage();
          message.addHeader("Transfer-Encoding", "Chunked");
  
          Assertions.assertEquals(ContentLengthStrategy.CHUNKED, lenStrategy.determineLength(message));
      }
  
      @Test
      public void testEntityWithIdentityTransferEncoding() throws Exception {
          final ContentLengthStrategy lenStrategy = new DefaultContentLengthStrategy();
          final HttpMessage message = new TestHttpMessage();
          message.addHeader("Transfer-Encoding", "Identity");
          Assertions.assertThrows(NotImplementedException.class, () ->
                  lenStrategy.determineLength(message));
      }
  
      @Test
      public void testEntityWithInvalidTransferEncoding() throws Exception {
          final ContentLengthStrategy lenStrategy = new DefaultContentLengthStrategy();
          final HttpMessage message = new TestHttpMessage();
          message.addHeader("Transfer-Encoding", "whatever");
          Assertions.assertThrows(ProtocolException.class, () ->
                  lenStrategy.determineLength(message));
      }
  
      @Test
      public void testEntityWithContentLength() throws Exception {
          final ContentLengthStrategy lenStrategy = new DefaultContentLengthStrategy();
          final HttpMessage message = new TestHttpMessage();
          message.addHeader("Content-Length", "100");
          Assertions.assertEquals(100, lenStrategy.determineLength(message));
     }
 
     @Test
     public void testEntityWithInvalidContentLength() throws Exception {
         final ContentLengthStrategy lenStrategy = new DefaultContentLengthStrategy();
         final HttpMessage message = new TestHttpMessage();
         message.addHeader("Content-Length", "whatever");
         Assertions.assertThrows(ProtocolException.class, () ->
                 lenStrategy.determineLength(message));
     }
 
     @Test
     public void testEntityWithNegativeContentLength() throws Exception {
         final ContentLengthStrategy lenStrategy = new DefaultContentLengthStrategy();
         final HttpMessage message = new TestHttpMessage();
         message.addHeader("Content-Length", "-10");
         Assertions.assertThrows(ProtocolException.class, () ->
                 lenStrategy.determineLength(message));
     }
 
     @Test
     public void testEntityNoContentDelimiter() throws Exception {
         final ContentLengthStrategy lenStrategy = new DefaultContentLengthStrategy();
         final HttpMessage message = new TestHttpMessage();
         Assertions.assertEquals(ContentLengthStrategy.UNDEFINED, lenStrategy.determineLength(message));
     }
 
 }