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 
17 package com.android.providers.downloads;
18 
19 import static java.net.HttpURLConnection.HTTP_OK;
20 
21 import android.app.DownloadManager;
22 import android.test.suitebuilder.annotation.LargeTest;
23 import android.util.Pair;
24 
25 import com.google.android.collect.Lists;
26 import com.google.android.collect.Sets;
27 import com.google.mockwebserver.MockResponse;
28 import com.google.mockwebserver.SocketPolicy;
29 
30 import java.util.HashSet;
31 import java.util.List;
32 import java.util.Set;
33 
34 /**
35  * Download manager tests that require multithreading.
36  */
37 @LargeTest
38 public class ThreadingTest extends AbstractPublicApiTest {
ThreadingTest()39     public ThreadingTest() {
40         super(new FakeSystemFacade());
41     }
42 
43     @Override
tearDown()44     protected void tearDown() throws Exception {
45         Thread.sleep(50); // give threads a chance to finish
46         super.tearDown();
47     }
48 
testFilenameRace()49     public void testFilenameRace() throws Exception {
50         final List<Pair<Download, String>> downloads = Lists.newArrayList();
51         final HashSet<String> expectedBodies = Sets.newHashSet();
52 
53         // Request dozen files at once with same name
54         for (int i = 0; i < 32; i++) {
55             final String body = "DOWNLOAD " + i + " CONTENTS";
56             enqueueResponse(new MockResponse().setResponseCode(HTTP_OK).setBody(body)
57                     .setHeader("Content-type", "text/plain")
58                     .setSocketPolicy(SocketPolicy.DISCONNECT_AT_END));
59 
60             final Download d = enqueueRequest(getRequest());
61             downloads.add(Pair.create(d, body));
62             expectedBodies.add(body);
63             startDownload(d.mId);
64         }
65 
66         final long startMillis = mSystemFacade.currentTimeMillis();
67         for (Pair<Download,String> d : downloads) {
68             d.first.waitForStatus(DownloadManager.STATUS_SUCCESSFUL, startMillis);
69         }
70 
71         // Ensure that contents are clean and filenames unique
72         final Set<String> seenFiles = Sets.newHashSet();
73         final HashSet<String> actualBodies = Sets.newHashSet();
74 
75         for (Pair<Download, String> d : downloads) {
76             final String file = d.first.getStringField(DownloadManager.COLUMN_LOCAL_FILENAME);
77             if (!seenFiles.add(file)) {
78                 fail("Another download already claimed " + file);
79             }
80 
81             final String expected = d.second;
82             final String actual = d.first.getContents();
83 
84             actualBodies.add(actual);
85         }
86 
87         assertEquals(expectedBodies, actualBodies);
88     }
89 }
90