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1   /*
2    * ====================================================================
3    * Licensed to the Apache Software Foundation (ASF) under one
4    * or more contributor license agreements.  See the NOTICE file
5    * distributed with this work for additional information
6    * regarding copyright ownership.  The ASF licenses this file
7    * to you under the Apache License, Version 2.0 (the
8    * "License"); you may not use this file except in compliance
9    * with the License.  You may obtain a copy of the License at
10   *
11   *   http://www.apache.org/licenses/LICENSE-2.0
12   *
13   * Unless required by applicable law or agreed to in writing,
14   * software distributed under the License is distributed on an
15   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16   * KIND, either express or implied.  See the License for the
17   * specific language governing permissions and limitations
18   * under the License.
19   * ====================================================================
20   *
21   * This software consists of voluntary contributions made by many
22   * individuals on behalf of the Apache Software Foundation.  For more
23   * information on the Apache Software Foundation, please see
24   * <http://www.apache.org/>.
25   *
26   */
27  
28  package org.apache.hc.core5.http.protocol;
29  
30  import java.util.LinkedList;
31  import java.util.List;
32  
33  import org.apache.hc.core5.http.HttpRequestInterceptor;
34  import org.junit.jupiter.api.Assertions;
35  import org.junit.jupiter.api.Test;
36  
37  public class TestChainBuilder {
38  
39      @Test
40      public void testBuildChain() throws Exception {
41          final ChainBuilder<HttpRequestInterceptor> cb = new ChainBuilder<>();
42          final HttpRequestInterceptor i1 = RequestContent.INSTANCE;
43          final HttpRequestInterceptor i2 = RequestTargetHost.INSTANCE;
44          final HttpRequestInterceptor i3 = RequestConnControl.INSTANCE;
45          final HttpRequestInterceptor i4 = RequestUserAgent.INSTANCE;
46          final HttpRequestInterceptor i5 = RequestExpectContinue.INSTANCE;
47          cb.addFirst(i1);
48          cb.addAllFirst(i2, i3);
49          cb.addFirst(null);
50          cb.addAllFirst((List<HttpRequestInterceptor>) null);
51          cb.addLast(i4);
52          cb.addLast(null);
53          cb.addAllLast(i5);
54          cb.addAllLast((List<HttpRequestInterceptor>) null);
55          cb.addFirst(i1);
56          cb.addAllLast(i3, i4, i5);
57          final LinkedList<HttpRequestInterceptor> list = cb.build();
58          Assertions.assertNotNull(list);
59          Assertions.assertEquals(5, list.size());
60          Assertions.assertSame(i1, list.get(0));
61          Assertions.assertSame(i2, list.get(1));
62          Assertions.assertSame(i3, list.get(2));
63          Assertions.assertSame(i4, list.get(3));
64          Assertions.assertSame(i5, list.get(4));
65      }
66  
67  }