1 /*
2  * Copyright (C) 2012 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 android.filesystem.cts;
18 
19 import android.os.Environment;
20 
21 import com.android.compatibility.common.util.CddTest;
22 import com.android.compatibility.common.util.CtsAndroidTestCase;
23 import com.android.compatibility.common.util.DeviceReportLog;
24 
25 public class RandomRWTest extends CtsAndroidTestCase {
26     private static final String DIR_RANDOM_WR = "RANDOM_WR";
27     private static final String DIR_RANDOM_RD = "RANDOM_RD";
28     private static final String REPORT_LOG_NAME = "CtsFileSystemTestCases";
29 
30     @Override
tearDown()31     protected void tearDown() throws Exception {
32         FileUtil.removeFileOrDir(getContext(), DIR_RANDOM_WR);
33         FileUtil.removeFileOrDir(getContext(), DIR_RANDOM_RD);
34         super.tearDown();
35     }
36 
37     @CddTest(requirement="8.2")
testRandomRead()38     public void testRandomRead() throws Exception {
39         final int READ_BUFFER_SIZE = 4 * 1024;
40         final long fileSize = FileUtil.getFileSizeExceedingMemory(getContext(), READ_BUFFER_SIZE);
41         if (fileSize == 0) { // not enough space, give up
42             return;
43         }
44         String streamName = "test_random_read";
45         DeviceReportLog report = new DeviceReportLog(REPORT_LOG_NAME, streamName);
46         FileUtil.doRandomReadTest(getContext(), DIR_RANDOM_RD, report, fileSize,
47                 READ_BUFFER_SIZE);
48         report.submit(getInstrumentation());
49     }
50 
51     // It is taking too long in some device, and thus cannot run multiple times
52     @CddTest(requirement="8.2")
testRandomUpdate()53     public void testRandomUpdate() throws Exception {
54         final int WRITE_BUFFER_SIZE = 4 * 1024;
55         final long usableSpace = Environment.getDataDirectory().getUsableSpace();
56         long fileSize = 256 * 1024 * 1024;
57         while (usableSpace < fileSize) {
58             fileSize = fileSize / 2;
59         }
60         String streamName = "test_random_update";
61         DeviceReportLog report = new DeviceReportLog(REPORT_LOG_NAME, streamName);
62         if (fileSize > FileUtil.BUFFER_SIZE) {
63             FileUtil.doRandomWriteTest(getContext(), DIR_RANDOM_WR, report, fileSize,
64                 WRITE_BUFFER_SIZE);
65         }
66         report.submit(getInstrumentation());
67     }
68 }
69