1 /*
2  * Copyright (C) 2010 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package android.core;
17 
18 import android.test.AndroidTestCase;
19 import org.apache.http.util.CharArrayBuffer;
20 
21 import android.net.http.Headers;
22 import android.util.Log;
23 
24 public class HttpHeaderTest extends AndroidTestCase {
25 
26     static final String LAST_MODIFIED = "Last-Modified: Fri, 18 Jun 2010 09:56:47 GMT";
27     static final String CACHE_CONTROL_MAX_AGE = "Cache-Control:max-age=15";
28     static final String CACHE_CONTROL_PRIVATE = "Cache-Control: private";
29     static final String CACHE_CONTROL_COMPOUND = "Cache-Control: no-cache, max-age=200000";
30     static final String CACHE_CONTROL_COMPOUND2 = "Cache-Control: max-age=200000, no-cache";
31 
32     /**
33      * Tests that cache control header supports multiple instances of the header,
34      * according to HTTP specification.
35      *
36      * The HTTP specification states the following about the fields:
37      * Multiple message-header fields with the same field-name MAY be present
38      * in a message if and only if the entire field-value for that header field
39      * is defined as a comma-separated list [i.e., #(values)]. It MUST be
40      * possible to combine the multiple header fields into one "field-name:
41      * field-value" pair, without changing the semantics of the message, by
42      * appending each subsequent field-value to the first, each separated by a
43      * comma. The order in which header fields with the same field-name are
44      * received is therefore significant to the interpretation of the combined
45      * field value, and thus a proxy MUST NOT change the order of these field
46      * values when a message is forwarded.
47      */
testCacheControl()48     public void testCacheControl() throws Exception {
49         Headers h = new Headers();
50         CharArrayBuffer buffer = new CharArrayBuffer(64);
51 
52         buffer.append(CACHE_CONTROL_MAX_AGE);
53         h.parseHeader(buffer);
54 
55         buffer.clear();
56         buffer.append(LAST_MODIFIED);
57         h.parseHeader(buffer);
58         assertEquals("max-age=15", h.getCacheControl());
59 
60         buffer.clear();
61         buffer.append(CACHE_CONTROL_PRIVATE);
62         h.parseHeader(buffer);
63         assertEquals("max-age=15,private", h.getCacheControl());
64     }
65 
66 }
67