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
17package com.android.providers.downloads;
18
19import static java.net.HttpURLConnection.HTTP_OK;
20
21import android.app.DownloadManager;
22import android.test.suitebuilder.annotation.LargeTest;
23import android.util.Pair;
24
25import com.google.android.collect.Lists;
26import com.google.android.collect.Sets;
27import com.google.mockwebserver.MockResponse;
28import com.google.mockwebserver.SocketPolicy;
29
30import java.util.List;
31import java.util.Set;
32
33/**
34 * Download manager tests that require multithreading.
35 */
36@LargeTest
37public class ThreadingTest extends AbstractPublicApiTest {
38    public ThreadingTest() {
39        super(new FakeSystemFacade());
40    }
41
42    @Override
43    protected void tearDown() throws Exception {
44        Thread.sleep(50); // give threads a chance to finish
45        super.tearDown();
46    }
47
48    /**
49     * Test for race conditions when the service is flooded with startService() calls while running
50     * a download.
51     */
52    public void testFloodServiceWithStarts() throws Exception {
53        enqueueResponse(buildResponse(HTTP_OK, FILE_CONTENT));
54        Download download = enqueueRequest(getRequest());
55        while (download.getStatus() != DownloadManager.STATUS_SUCCESSFUL) {
56            startService(null);
57            Thread.sleep(10);
58        }
59    }
60
61    public void testFilenameRace() throws Exception {
62        final List<Pair<Download, String>> downloads = Lists.newArrayList();
63
64        // Request dozen files at once with same name
65        for (int i = 0; i < 12; i++) {
66            final String body = "DOWNLOAD " + i + " CONTENTS";
67            enqueueResponse(new MockResponse().setResponseCode(HTTP_OK).setBody(body)
68                    .setHeader("Content-type", "text/plain")
69                    .setSocketPolicy(SocketPolicy.DISCONNECT_AT_END));
70
71            final Download d = enqueueRequest(getRequest());
72            downloads.add(Pair.create(d, body));
73        }
74
75        // Kick off downloads in parallel
76        final long startMillis = mSystemFacade.currentTimeMillis();
77        startService(null);
78
79        for (Pair<Download,String> d : downloads) {
80            d.first.waitForStatus(DownloadManager.STATUS_SUCCESSFUL, startMillis);
81        }
82
83        // Ensure that contents are clean and filenames unique
84        final Set<String> seenFiles = Sets.newHashSet();
85
86        for (Pair<Download, String> d : downloads) {
87            final String file = d.first.getStringField(DownloadManager.COLUMN_LOCAL_FILENAME);
88            if (!seenFiles.add(file)) {
89                fail("Another download already claimed " + file);
90            }
91
92            final String expected = d.second;
93            final String actual = d.first.getContents();
94            assertEquals(expected, actual);
95        }
96    }
97}
98