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    * Licensed to the Apache Software Foundation (ASF) under one
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    * 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/>.
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  package org.apache.hc.core5.testing.classic;
  
  import static org.hamcrest.MatcherAssert.assertThat;
  
  import java.io.IOException;
  
  import org.apache.hc.core5.http.ClassicHttpRequest;
  import org.apache.hc.core5.http.ClassicHttpResponse;
  import org.apache.hc.core5.http.ContentType;
  import org.apache.hc.core5.http.HttpHost;
  import org.apache.hc.core5.http.HttpStatus;
  import org.apache.hc.core5.http.Method;
  import org.apache.hc.core5.http.URIScheme;
  import org.apache.hc.core5.http.impl.bootstrap.HttpRequester;
  import org.apache.hc.core5.http.impl.bootstrap.HttpServer;
  import org.apache.hc.core5.http.io.entity.EntityUtils;
  import org.apache.hc.core5.http.io.entity.StringEntity;
  import org.apache.hc.core5.http.message.BasicClassicHttpRequest;
  import org.apache.hc.core5.http.protocol.HttpCoreContext;
  import org.apache.hc.core5.util.Timeout;
  import org.hamcrest.CoreMatchers;
  import org.junit.jupiter.api.Test;
  
  public abstract class ClassicHttpCoreTransportTest {
  
      private static final Timeout TIMEOUT = Timeout.ofMinutes(1);
  
      private final URIScheme scheme;
  
      public ClassicHttpCoreTransportTest(final URIScheme scheme) {
          this.scheme = scheme;
      }
  
      abstract HttpServer serverStart() throws IOException;
  
      abstract HttpRequester clientStart() throws IOException;
  
      @Test
      public void testSequentialRequests() throws Exception {
          final HttpServer server = serverStart();
          final HttpRequester requester = clientStart();
  
          final HttpHost target = new HttpHost(scheme.id, "localhost", server.getLocalPort());
          final HttpCoreContext context = HttpCoreContext.create();
          final ClassicHttpRequest request1 = new BasicClassicHttpRequest(Method.POST, "/stuff");
          request1.setEntity(new StringEntity("some stuff", ContentType.TEXT_PLAIN));
          try (final ClassicHttpResponse response1 = requester.execute(target, request1, TIMEOUT, context)) {
              assertThat(response1.getCode(), CoreMatchers.equalTo(HttpStatus.SC_OK));
              final String body1 = EntityUtils.toString(response1.getEntity());
              assertThat(body1, CoreMatchers.equalTo("some stuff"));
          }
          final ClassicHttpRequest request2 = new BasicClassicHttpRequest(Method.POST, "/other-stuff");
          request2.setEntity(new StringEntity("some other stuff", ContentType.TEXT_PLAIN));
          try (final ClassicHttpResponse response2 = requester.execute(target, request2, TIMEOUT, context)) {
              assertThat(response2.getCode(), CoreMatchers.equalTo(HttpStatus.SC_OK));
              final String body2 = EntityUtils.toString(response2.getEntity());
              assertThat(body2, CoreMatchers.equalTo("some other stuff"));
          }
          final ClassicHttpRequest request3 = new BasicClassicHttpRequest(Method.POST, "/more-stuff");
          request3.setEntity(new StringEntity("some more stuff", ContentType.TEXT_PLAIN));
          try (final ClassicHttpResponse response3 = requester.execute(target, request3, TIMEOUT, context)) {
              assertThat(response3.getCode(), CoreMatchers.equalTo(HttpStatus.SC_OK));
              final String body3 = EntityUtils.toString(response3.getEntity());
              assertThat(body3, CoreMatchers.equalTo("some more stuff"));
          }
      }
  
      @Test
      public void testSequentialRequestsNonPersistentConnection() throws Exception {
          final HttpServer server = serverStart();
          final HttpRequester requester = clientStart();
  
         final HttpHost target = new HttpHost(scheme.id, "localhost", server.getLocalPort());
         final HttpCoreContext context = HttpCoreContext.create();
         final ClassicHttpRequest request1 = new BasicClassicHttpRequest(Method.POST, "/no-keep-alive/stuff");
         request1.setEntity(new StringEntity("some stuff", ContentType.TEXT_PLAIN));
         try (final ClassicHttpResponse response1 = requester.execute(target, request1, TIMEOUT, context)) {
             assertThat(response1.getCode(), CoreMatchers.equalTo(HttpStatus.SC_OK));
             final String body1 = EntityUtils.toString(response1.getEntity());
             assertThat(body1, CoreMatchers.equalTo("some stuff"));
         }
         final ClassicHttpRequest request2 = new BasicClassicHttpRequest(Method.POST, "/no-keep-alive/other-stuff");
         request2.setEntity(new StringEntity("some other stuff", ContentType.TEXT_PLAIN));
         try (final ClassicHttpResponse response2 = requester.execute(target, request2, TIMEOUT, context)) {
             assertThat(response2.getCode(), CoreMatchers.equalTo(HttpStatus.SC_OK));
             final String body2 = EntityUtils.toString(response2.getEntity());
             assertThat(body2, CoreMatchers.equalTo("some other stuff"));
         }
         final ClassicHttpRequest request3 = new BasicClassicHttpRequest(Method.POST, "/no-keep-alive/more-stuff");
         request3.setEntity(new StringEntity("some more stuff", ContentType.TEXT_PLAIN));
         try (final ClassicHttpResponse response3 = requester.execute(target, request3, TIMEOUT, context)) {
             assertThat(response3.getCode(), CoreMatchers.equalTo(HttpStatus.SC_OK));
             final String body3 = EntityUtils.toString(response3.getEntity());
             assertThat(body3, CoreMatchers.equalTo("some more stuff"));
         }
     }
 
 }