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      1 /*
      2  * Copyright (C) 2009 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.server;
     18 
     19 import android.content.ContentResolver;
     20 import android.content.Context;
     21 import android.content.Intent;
     22 import android.os.DropBoxManager;
     23 import android.os.Parcel;
     24 import android.os.Parcelable;
     25 import android.os.ParcelFileDescriptor;
     26 import android.os.Process;
     27 import android.os.ServiceManager;
     28 import android.os.StatFs;
     29 import android.provider.Settings;
     30 import android.test.AndroidTestCase;
     31 
     32 import com.android.server.DropBoxManagerService;
     33 
     34 import java.io.BufferedReader;
     35 import java.io.File;
     36 import java.io.FileOutputStream;
     37 import java.io.FileWriter;
     38 import java.io.IOException;
     39 import java.io.InputStream;
     40 import java.io.InputStreamReader;
     41 import java.util.Random;
     42 import java.util.zip.GZIPOutputStream;
     43 
     44 /** Test {@link DropBoxManager} functionality. */
     45 public class DropBoxTest extends AndroidTestCase {
     46     public void tearDown() throws Exception {
     47         ContentResolver cr = getContext().getContentResolver();
     48         Settings.Secure.putString(cr, Settings.Secure.DROPBOX_AGE_SECONDS, "");
     49         Settings.Secure.putString(cr, Settings.Secure.DROPBOX_MAX_FILES, "");
     50         Settings.Secure.putString(cr, Settings.Secure.DROPBOX_QUOTA_KB, "");
     51         Settings.Secure.putString(cr, Settings.Secure.DROPBOX_TAG_PREFIX + "DropBoxTest", "");
     52     }
     53 
     54     public void testAddText() throws Exception {
     55         DropBoxManager dropbox = (DropBoxManager) getContext().getSystemService(
     56                 Context.DROPBOX_SERVICE);
     57         long before = System.currentTimeMillis();
     58         Thread.sleep(5);
     59         dropbox.addText("DropBoxTest", "TEST0");
     60         Thread.sleep(5);
     61         long between = System.currentTimeMillis();
     62         Thread.sleep(5);
     63         dropbox.addText("DropBoxTest", "TEST1");
     64         dropbox.addText("DropBoxTest", "TEST2");
     65         Thread.sleep(5);
     66         long after = System.currentTimeMillis();
     67 
     68         DropBoxManager.Entry e0 = dropbox.getNextEntry("DropBoxTest", before);
     69         DropBoxManager.Entry e1 = dropbox.getNextEntry("DropBoxTest", e0.getTimeMillis());
     70         DropBoxManager.Entry e2 = dropbox.getNextEntry("DropBoxTest", e1.getTimeMillis());
     71         assertTrue(null == dropbox.getNextEntry("DropBoxTest", e2.getTimeMillis()));
     72 
     73         assertTrue(e0.getTimeMillis() > before);
     74         assertTrue(e0.getTimeMillis() < between);
     75         assertTrue(e1.getTimeMillis() > between);
     76         assertTrue(e1.getTimeMillis() < e2.getTimeMillis());
     77         assertTrue(e2.getTimeMillis() < after);
     78 
     79         assertEquals("TEST0", e0.getText(80));
     80         assertEquals("TEST1", e1.getText(80));
     81         assertEquals("TES", e2.getText(3));
     82 
     83         e0.close();
     84         e1.close();
     85         e2.close();
     86     }
     87 
     88     public void testAddData() throws Exception {
     89         DropBoxManager dropbox = (DropBoxManager) getContext().getSystemService(
     90                 Context.DROPBOX_SERVICE);
     91         long before = System.currentTimeMillis();
     92         dropbox.addData("DropBoxTest", "TEST".getBytes(), 0);
     93         long after = System.currentTimeMillis();
     94 
     95         DropBoxManager.Entry e = dropbox.getNextEntry("DropBoxTest", before);
     96         assertTrue(null == dropbox.getNextEntry("DropBoxTest", e.getTimeMillis()));
     97 
     98         assertEquals("DropBoxTest", e.getTag());
     99         assertTrue(e.getTimeMillis() >= before);
    100         assertEquals(0, e.getFlags());
    101         assertTrue(null == e.getText(80));
    102 
    103         byte[] buf = new byte[80];
    104         assertEquals("TEST", new String(buf, 0, e.getInputStream().read(buf)));
    105 
    106         e.close();
    107     }
    108 
    109     public void testAddFile() throws Exception {
    110         File dir = getEmptyDir("testAddFile");
    111         long before = System.currentTimeMillis();
    112 
    113         File f0 = new File(dir, "f0.txt");
    114         File f1 = new File(dir, "f1.txt.gz");
    115         File f2 = new File(dir, "f2.dat");
    116         File f3 = new File(dir, "f2.dat.gz");
    117 
    118         FileWriter w0 = new FileWriter(f0);
    119         GZIPOutputStream gz1 = new GZIPOutputStream(new FileOutputStream(f1));
    120         FileOutputStream os2 = new FileOutputStream(f2);
    121         GZIPOutputStream gz3 = new GZIPOutputStream(new FileOutputStream(f3));
    122 
    123         w0.write("FILE0");
    124         gz1.write("FILE1".getBytes());
    125         os2.write("DATA2".getBytes());
    126         gz3.write("DATA3".getBytes());
    127 
    128         w0.close();
    129         gz1.close();
    130         os2.close();
    131         gz3.close();
    132 
    133         DropBoxManager dropbox = (DropBoxManager) getContext().getSystemService(
    134                 Context.DROPBOX_SERVICE);
    135 
    136         dropbox.addFile("DropBoxTest", f0, DropBoxManager.IS_TEXT);
    137         dropbox.addFile("DropBoxTest", f1, DropBoxManager.IS_TEXT | DropBoxManager.IS_GZIPPED);
    138         dropbox.addFile("DropBoxTest", f2, 0);
    139         dropbox.addFile("DropBoxTest", f3, DropBoxManager.IS_GZIPPED);
    140 
    141         DropBoxManager.Entry e0 = dropbox.getNextEntry("DropBoxTest", before);
    142         DropBoxManager.Entry e1 = dropbox.getNextEntry("DropBoxTest", e0.getTimeMillis());
    143         DropBoxManager.Entry e2 = dropbox.getNextEntry("DropBoxTest", e1.getTimeMillis());
    144         DropBoxManager.Entry e3 = dropbox.getNextEntry("DropBoxTest", e2.getTimeMillis());
    145         assertTrue(null == dropbox.getNextEntry("DropBoxTest", e3.getTimeMillis()));
    146 
    147         assertTrue(e0.getTimeMillis() > before);
    148         assertTrue(e1.getTimeMillis() > e0.getTimeMillis());
    149         assertTrue(e2.getTimeMillis() > e1.getTimeMillis());
    150         assertTrue(e3.getTimeMillis() > e2.getTimeMillis());
    151 
    152         assertEquals(DropBoxManager.IS_TEXT, e0.getFlags());
    153         assertEquals(DropBoxManager.IS_TEXT, e1.getFlags());
    154         assertEquals(0, e2.getFlags());
    155         assertEquals(0, e3.getFlags());
    156 
    157         assertEquals("FILE0", e0.getText(80));
    158 
    159         byte[] buf1 = new byte[80];
    160         assertEquals("FILE1", new String(buf1, 0, e1.getInputStream().read(buf1)));
    161 
    162         assertTrue(null == e2.getText(80));
    163         byte[] buf2 = new byte[80];
    164         assertEquals("DATA2", new String(buf2, 0, e2.getInputStream().read(buf2)));
    165 
    166         assertTrue(null == e3.getText(80));
    167         byte[] buf3 = new byte[80];
    168         assertEquals("DATA3", new String(buf3, 0, e3.getInputStream().read(buf3)));
    169 
    170         e0.close();
    171         e1.close();
    172         e2.close();
    173         e3.close();
    174     }
    175 
    176     public void testAddEntriesInTheFuture() throws Exception {
    177         File dir = getEmptyDir("testAddEntriesInTheFuture");
    178         long before = System.currentTimeMillis();
    179 
    180         // Near future: should be allowed to persist
    181         FileWriter w0 = new FileWriter(new File(dir, "DropBoxTest@" + (before + 5000) + ".txt"));
    182         w0.write("FUTURE0");
    183         w0.close();
    184 
    185         // Far future: should be collapsed
    186         FileWriter w1 = new FileWriter(new File(dir, "DropBoxTest@" + (before + 100000) + ".txt"));
    187         w1.write("FUTURE1");
    188         w1.close();
    189 
    190         // Another far future item, this one gzipped
    191         File f2 = new File(dir, "DropBoxTest@" + (before + 100001) + ".txt.gz");
    192         GZIPOutputStream gz2 = new GZIPOutputStream(new FileOutputStream(f2));
    193         gz2.write("FUTURE2".getBytes());
    194         gz2.close();
    195 
    196         // Tombstone in the far future
    197         new FileOutputStream(new File(dir, "DropBoxTest@" + (before + 100002) + ".lost")).close();
    198 
    199         DropBoxManagerService service = new DropBoxManagerService(getContext(), dir);
    200         DropBoxManager dropbox = new DropBoxManager(service);
    201 
    202         // Until a write, the timestamps are taken at face value
    203         DropBoxManager.Entry e0 = dropbox.getNextEntry(null, before);
    204         DropBoxManager.Entry e1 = dropbox.getNextEntry(null, e0.getTimeMillis());
    205         DropBoxManager.Entry e2 = dropbox.getNextEntry(null, e1.getTimeMillis());
    206         DropBoxManager.Entry e3 = dropbox.getNextEntry(null, e2.getTimeMillis());
    207         assertTrue(null == dropbox.getNextEntry(null, e3.getTimeMillis()));
    208 
    209         assertEquals("FUTURE0", e0.getText(80));
    210         assertEquals("FUTURE1", e1.getText(80));
    211         assertEquals("FUTURE2", e2.getText(80));
    212         assertEquals(null, e3.getText(80));
    213 
    214         assertEquals(before + 5000, e0.getTimeMillis());
    215         assertEquals(before + 100000, e1.getTimeMillis());
    216         assertEquals(before + 100001, e2.getTimeMillis());
    217         assertEquals(before + 100002, e3.getTimeMillis());
    218 
    219         e0.close();
    220         e1.close();
    221         e2.close();
    222         e3.close();
    223 
    224         // Write something to force a collapse
    225         dropbox.addText("NotDropBoxTest", "FUTURE");
    226         e0 = dropbox.getNextEntry(null, before);
    227         e1 = dropbox.getNextEntry(null, e0.getTimeMillis());
    228         e2 = dropbox.getNextEntry(null, e1.getTimeMillis());
    229         e3 = dropbox.getNextEntry(null, e2.getTimeMillis());
    230         assertTrue(null == dropbox.getNextEntry("DropBoxTest", e3.getTimeMillis()));
    231 
    232         assertEquals("FUTURE0", e0.getText(80));
    233         assertEquals("FUTURE1", e1.getText(80));
    234         assertEquals("FUTURE2", e2.getText(80));
    235         assertEquals(null, e3.getText(80));
    236 
    237         assertEquals(before + 5000, e0.getTimeMillis());
    238         assertEquals(before + 5001, e1.getTimeMillis());
    239         assertEquals(before + 5002, e2.getTimeMillis());
    240         assertEquals(before + 5003, e3.getTimeMillis());
    241 
    242         e0.close();
    243         e1.close();
    244         e2.close();
    245         e3.close();
    246         service.stop();
    247     }
    248 
    249     public void testIsTagEnabled() throws Exception {
    250         DropBoxManager dropbox = (DropBoxManager) getContext().getSystemService(
    251                 Context.DROPBOX_SERVICE);
    252         long before = System.currentTimeMillis();
    253         dropbox.addText("DropBoxTest", "TEST-ENABLED");
    254         assertTrue(dropbox.isTagEnabled("DropBoxTest"));
    255 
    256         ContentResolver cr = getContext().getContentResolver();
    257         Settings.Secure.putString(cr, Settings.Secure.DROPBOX_TAG_PREFIX + "DropBoxTest",
    258                                   "disabled");
    259 
    260         dropbox.addText("DropBoxTest", "TEST-DISABLED");
    261         assertFalse(dropbox.isTagEnabled("DropBoxTest"));
    262 
    263         Settings.Secure.putString(cr, Settings.Secure.DROPBOX_TAG_PREFIX + "DropBoxTest",
    264                                   "");
    265 
    266         dropbox.addText("DropBoxTest", "TEST-ENABLED-AGAIN");
    267         assertTrue(dropbox.isTagEnabled("DropBoxTest"));
    268 
    269         DropBoxManager.Entry e0 = dropbox.getNextEntry("DropBoxTest", before);
    270         DropBoxManager.Entry e1 = dropbox.getNextEntry("DropBoxTest", e0.getTimeMillis());
    271         assertTrue(null == dropbox.getNextEntry("DropBoxTest", e1.getTimeMillis()));
    272 
    273         assertEquals("TEST-ENABLED", e0.getText(80));
    274         assertEquals("TEST-ENABLED-AGAIN", e1.getText(80));
    275 
    276         e0.close();
    277         e1.close();
    278     }
    279 
    280     public void testGetNextEntry() throws Exception {
    281         File dir = getEmptyDir("testGetNextEntry");
    282         DropBoxManagerService service = new DropBoxManagerService(getContext(), dir);
    283         DropBoxManager dropbox = new DropBoxManager(service);
    284 
    285         long before = System.currentTimeMillis();
    286         dropbox.addText("DropBoxTest.A", "A0");
    287         dropbox.addText("DropBoxTest.B", "B0");
    288         dropbox.addText("DropBoxTest.A", "A1");
    289 
    290         DropBoxManager.Entry a0 = dropbox.getNextEntry("DropBoxTest.A", before);
    291         DropBoxManager.Entry a1 = dropbox.getNextEntry("DropBoxTest.A", a0.getTimeMillis());
    292         assertTrue(null == dropbox.getNextEntry("DropBoxTest.A", a1.getTimeMillis()));
    293 
    294         DropBoxManager.Entry b0 = dropbox.getNextEntry("DropBoxTest.B", before);
    295         assertTrue(null == dropbox.getNextEntry("DropBoxTest.B", b0.getTimeMillis()));
    296 
    297         DropBoxManager.Entry x0 = dropbox.getNextEntry(null, before);
    298         DropBoxManager.Entry x1 = dropbox.getNextEntry(null, x0.getTimeMillis());
    299         DropBoxManager.Entry x2 = dropbox.getNextEntry(null, x1.getTimeMillis());
    300         assertTrue(null == dropbox.getNextEntry(null, x2.getTimeMillis()));
    301 
    302         assertEquals("DropBoxTest.A", a0.getTag());
    303         assertEquals("DropBoxTest.A", a1.getTag());
    304         assertEquals("A0", a0.getText(80));
    305         assertEquals("A1", a1.getText(80));
    306 
    307         assertEquals("DropBoxTest.B", b0.getTag());
    308         assertEquals("B0", b0.getText(80));
    309 
    310         assertEquals("DropBoxTest.A", x0.getTag());
    311         assertEquals("DropBoxTest.B", x1.getTag());
    312         assertEquals("DropBoxTest.A", x2.getTag());
    313         assertEquals("A0", x0.getText(80));
    314         assertEquals("B0", x1.getText(80));
    315         assertEquals("A1", x2.getText(80));
    316 
    317         a0.close();
    318         a1.close();
    319         b0.close();
    320         x0.close();
    321         x1.close();
    322         x2.close();
    323         service.stop();
    324     }
    325 
    326     public void testSizeLimits() throws Exception {
    327         File dir = getEmptyDir("testSizeLimits");
    328         int blockSize =  new StatFs(dir.getPath()).getBlockSize();
    329 
    330         // Limit storage to 10 blocks
    331         int kb = blockSize * 10 / 1024;
    332         ContentResolver cr = getContext().getContentResolver();
    333         Settings.Secure.putString(cr, Settings.Secure.DROPBOX_QUOTA_KB, Integer.toString(kb));
    334 
    335         // Three tags using a total of 12 blocks:
    336         // DropBoxTest0 [ ][ ]
    337         // DropBoxTest1 [x][ ][    ][ ][xxx(20 blocks)xxx]
    338         // DropBoxTest2 [xxxxxxxxxx][ ][ ]
    339         //
    340         // The blocks marked "x" will be removed due to storage restrictions.
    341         // Use random fill (so it doesn't compress), subtract a little for gzip overhead
    342 
    343         final int overhead = 64;
    344         long before = System.currentTimeMillis();
    345         DropBoxManagerService service = new DropBoxManagerService(getContext(), dir);
    346         DropBoxManager dropbox = new DropBoxManager(service);
    347 
    348         addRandomEntry(dropbox, "DropBoxTest0", blockSize - overhead);
    349         addRandomEntry(dropbox, "DropBoxTest0", blockSize - overhead);
    350 
    351         addRandomEntry(dropbox, "DropBoxTest1", blockSize - overhead);
    352         addRandomEntry(dropbox, "DropBoxTest1", blockSize - overhead);
    353         addRandomEntry(dropbox, "DropBoxTest1", blockSize * 2 - overhead);
    354         addRandomEntry(dropbox, "DropBoxTest1", blockSize - overhead);
    355         addRandomEntry(dropbox, "DropBoxTest1", blockSize * 20 - overhead);
    356 
    357         addRandomEntry(dropbox, "DropBoxTest2", blockSize * 4 - overhead);
    358         addRandomEntry(dropbox, "DropBoxTest2", blockSize - overhead);
    359         addRandomEntry(dropbox, "DropBoxTest2", blockSize - overhead);
    360 
    361         DropBoxManager.Entry e0 = dropbox.getNextEntry(null, before);
    362         DropBoxManager.Entry e1 = dropbox.getNextEntry(null, e0.getTimeMillis());
    363         DropBoxManager.Entry e2 = dropbox.getNextEntry(null, e1.getTimeMillis());
    364         DropBoxManager.Entry e3 = dropbox.getNextEntry(null, e2.getTimeMillis());
    365         DropBoxManager.Entry e4 = dropbox.getNextEntry(null, e3.getTimeMillis());
    366         DropBoxManager.Entry e5 = dropbox.getNextEntry(null, e4.getTimeMillis());
    367         DropBoxManager.Entry e6 = dropbox.getNextEntry(null, e5.getTimeMillis());
    368         DropBoxManager.Entry e7 = dropbox.getNextEntry(null, e6.getTimeMillis());
    369         DropBoxManager.Entry e8 = dropbox.getNextEntry(null, e7.getTimeMillis());
    370         DropBoxManager.Entry e9 = dropbox.getNextEntry(null, e8.getTimeMillis());
    371         assertTrue(null == dropbox.getNextEntry(null, e9.getTimeMillis()));
    372 
    373         assertEquals("DropBoxTest0", e0.getTag());
    374         assertEquals("DropBoxTest0", e1.getTag());
    375         assertEquals(blockSize - overhead, getEntrySize(e0));
    376         assertEquals(blockSize - overhead, getEntrySize(e1));
    377 
    378         assertEquals("DropBoxTest1", e2.getTag());
    379         assertEquals("DropBoxTest1", e3.getTag());
    380         assertEquals("DropBoxTest1", e4.getTag());
    381         assertEquals("DropBoxTest1", e5.getTag());
    382         assertEquals("DropBoxTest1", e6.getTag());
    383         assertEquals(-1, getEntrySize(e2));  // Tombstone
    384         assertEquals(blockSize - overhead, getEntrySize(e3));
    385         assertEquals(blockSize * 2 - overhead, getEntrySize(e4));
    386         assertEquals(blockSize - overhead, getEntrySize(e5));
    387         assertEquals(-1, getEntrySize(e6));
    388 
    389         assertEquals("DropBoxTest2", e7.getTag());
    390         assertEquals("DropBoxTest2", e8.getTag());
    391         assertEquals("DropBoxTest2", e9.getTag());
    392         assertEquals(-1, getEntrySize(e7));  // Tombstone
    393         assertEquals(blockSize - overhead, getEntrySize(e8));
    394         assertEquals(blockSize - overhead, getEntrySize(e9));
    395 
    396         e0.close();
    397         e1.close();
    398         e2.close();
    399         e3.close();
    400         e4.close();
    401         e5.close();
    402         e6.close();
    403         e7.close();
    404         e8.close();
    405         e9.close();
    406 
    407         // Specifying a tag name skips tombstone records.
    408 
    409         DropBoxManager.Entry t0 = dropbox.getNextEntry("DropBoxTest1", before);
    410         DropBoxManager.Entry t1 = dropbox.getNextEntry("DropBoxTest1", t0.getTimeMillis());
    411         DropBoxManager.Entry t2 = dropbox.getNextEntry("DropBoxTest1", t1.getTimeMillis());
    412         assertTrue(null == dropbox.getNextEntry("DropBoxTest1", t2.getTimeMillis()));
    413 
    414         assertEquals("DropBoxTest1", t0.getTag());
    415         assertEquals("DropBoxTest1", t1.getTag());
    416         assertEquals("DropBoxTest1", t2.getTag());
    417 
    418         assertEquals(blockSize - overhead, getEntrySize(t0));
    419         assertEquals(blockSize * 2 - overhead, getEntrySize(t1));
    420         assertEquals(blockSize - overhead, getEntrySize(t2));
    421 
    422         t0.close();
    423         t1.close();
    424         t2.close();
    425         service.stop();
    426     }
    427 
    428     public void testAgeLimits() throws Exception {
    429         File dir = getEmptyDir("testAgeLimits");
    430         int blockSize = new StatFs(dir.getPath()).getBlockSize();
    431 
    432         // Limit storage to 10 blocks with an expiration of 1 second
    433         int kb = blockSize * 10 / 1024;
    434         ContentResolver cr = getContext().getContentResolver();
    435         Settings.Secure.putString(cr, Settings.Secure.DROPBOX_AGE_SECONDS, "1");
    436         Settings.Secure.putString(cr, Settings.Secure.DROPBOX_QUOTA_KB, Integer.toString(kb));
    437 
    438         // Write one normal entry and another so big that it is instantly tombstoned
    439         long before = System.currentTimeMillis();
    440         DropBoxManagerService service = new DropBoxManagerService(getContext(), dir);
    441         DropBoxManager dropbox = new DropBoxManager(service);
    442 
    443         dropbox.addText("DropBoxTest", "TEST");
    444         addRandomEntry(dropbox, "DropBoxTest", blockSize * 20);
    445 
    446         // Verify that things are as expected
    447         DropBoxManager.Entry e0 = dropbox.getNextEntry(null, before);
    448         DropBoxManager.Entry e1 = dropbox.getNextEntry(null, e0.getTimeMillis());
    449         assertTrue(null == dropbox.getNextEntry(null, e1.getTimeMillis()));
    450 
    451         assertEquals("TEST", e0.getText(80));
    452         assertEquals(null, e1.getText(80));
    453         assertEquals(-1, getEntrySize(e1));
    454 
    455         e0.close();
    456         e1.close();
    457 
    458         // Wait a second and write another entry -- old ones should be expunged
    459         Thread.sleep(2000);
    460         dropbox.addText("DropBoxTest", "TEST1");
    461 
    462         e0 = dropbox.getNextEntry(null, before);
    463         assertTrue(null == dropbox.getNextEntry(null, e0.getTimeMillis()));
    464         assertEquals("TEST1", e0.getText(80));
    465         e0.close();
    466     }
    467 
    468     public void testFileCountLimits() throws Exception {
    469         File dir = getEmptyDir("testFileCountLimits");
    470 
    471         DropBoxManagerService service = new DropBoxManagerService(getContext(), dir);
    472         DropBoxManager dropbox = new DropBoxManager(service);
    473         dropbox.addText("DropBoxTest", "TEST0");
    474         dropbox.addText("DropBoxTest", "TEST1");
    475         dropbox.addText("DropBoxTest", "TEST2");
    476         dropbox.addText("DropBoxTest", "TEST3");
    477         dropbox.addText("DropBoxTest", "TEST4");
    478         dropbox.addText("DropBoxTest", "TEST5");
    479 
    480         // Verify 6 files added
    481         DropBoxManager.Entry e0 = dropbox.getNextEntry(null, 0);
    482         DropBoxManager.Entry e1 = dropbox.getNextEntry(null, e0.getTimeMillis());
    483         DropBoxManager.Entry e2 = dropbox.getNextEntry(null, e1.getTimeMillis());
    484         DropBoxManager.Entry e3 = dropbox.getNextEntry(null, e2.getTimeMillis());
    485         DropBoxManager.Entry e4 = dropbox.getNextEntry(null, e3.getTimeMillis());
    486         DropBoxManager.Entry e5 = dropbox.getNextEntry(null, e4.getTimeMillis());
    487         assertTrue(null == dropbox.getNextEntry(null, e5.getTimeMillis()));
    488         assertEquals("TEST0", e0.getText(80));
    489         assertEquals("TEST5", e5.getText(80));
    490 
    491         e0.close();
    492         e1.close();
    493         e2.close();
    494         e3.close();
    495         e4.close();
    496         e5.close();
    497 
    498         // Limit to 3 files and add one more entry
    499         ContentResolver cr = getContext().getContentResolver();
    500         Settings.Secure.putString(cr, Settings.Secure.DROPBOX_MAX_FILES, "3");
    501         dropbox.addText("DropBoxTest", "TEST6");
    502 
    503         // Verify only 3 files left
    504         DropBoxManager.Entry f0 = dropbox.getNextEntry(null, 0);
    505         DropBoxManager.Entry f1 = dropbox.getNextEntry(null, f0.getTimeMillis());
    506         DropBoxManager.Entry f2 = dropbox.getNextEntry(null, f1.getTimeMillis());
    507         assertTrue(null == dropbox.getNextEntry(null, f2.getTimeMillis()));
    508         assertEquals("TEST4", f0.getText(80));
    509         assertEquals("TEST5", f1.getText(80));
    510         assertEquals("TEST6", f2.getText(80));
    511 
    512         f0.close();
    513         f1.close();
    514         f2.close();
    515     }
    516 
    517     public void testCreateDropBoxManagerWithInvalidDirectory() throws Exception {
    518         // If created with an invalid directory, the DropBoxManager should suffer quietly
    519         // and fail all operations (this is how it survives a full disk).
    520         // Once the directory becomes possible to create, it will start working.
    521 
    522         File dir = new File(getEmptyDir("testCreateDropBoxManagerWith"), "InvalidDirectory");
    523         new FileOutputStream(dir).close();  // Create an empty file
    524         DropBoxManagerService service = new DropBoxManagerService(getContext(), dir);
    525         DropBoxManager dropbox = new DropBoxManager(service);
    526 
    527         dropbox.addText("DropBoxTest", "should be ignored");
    528         dropbox.addData("DropBoxTest", "should be ignored".getBytes(), 0);
    529         assertTrue(null == dropbox.getNextEntry("DropBoxTest", 0));
    530 
    531         dir.delete();  // Remove the file so a directory can be created
    532         dropbox.addText("DropBoxTest", "TEST");
    533         DropBoxManager.Entry e = dropbox.getNextEntry("DropBoxTest", 0);
    534         assertTrue(null == dropbox.getNextEntry("DropBoxTest", e.getTimeMillis()));
    535         assertEquals("DropBoxTest", e.getTag());
    536         assertEquals("TEST", e.getText(80));
    537         e.close();
    538         service.stop();
    539     }
    540 
    541     public void testDropBoxEntrySerialization() throws Exception {
    542         // Make sure DropBoxManager.Entry can be serialized to a Parcel and back
    543         // under a variety of conditions.
    544 
    545         Parcel parcel = Parcel.obtain();
    546         File dir = getEmptyDir("testDropBoxEntrySerialization");
    547 
    548         new DropBoxManager.Entry("empty", 1000000).writeToParcel(parcel, 0);
    549         new DropBoxManager.Entry("string", 2000000, "String Value").writeToParcel(parcel, 0);
    550         new DropBoxManager.Entry("bytes", 3000000, "Bytes Value".getBytes(),
    551                 DropBoxManager.IS_TEXT).writeToParcel(parcel, 0);
    552         new DropBoxManager.Entry("zerobytes", 4000000, new byte[0], 0).writeToParcel(parcel, 0);
    553         new DropBoxManager.Entry("emptybytes", 5000000, (byte[]) null,
    554                 DropBoxManager.IS_EMPTY).writeToParcel(parcel, 0);
    555 
    556         try {
    557             new DropBoxManager.Entry("badbytes", 99999,
    558                     "Bad Bytes Value".getBytes(),
    559                     DropBoxManager.IS_EMPTY).writeToParcel(parcel, 0);
    560             fail("IllegalArgumentException expected for non-null byte[] and IS_EMPTY flags");
    561         } catch (IllegalArgumentException e) {
    562             // expected
    563         }
    564 
    565         try {
    566             new DropBoxManager.Entry("badbytes", 99999, (byte[]) null, 0).writeToParcel(parcel, 0);
    567             fail("IllegalArgumentException expected for null byte[] and non-IS_EMPTY flags");
    568         } catch (IllegalArgumentException e) {
    569             // expected
    570         }
    571 
    572         File f = new File(dir, "file.dat");
    573         FileOutputStream os = new FileOutputStream(f);
    574         os.write("File Value".getBytes());
    575         os.close();
    576 
    577         new DropBoxManager.Entry("file", 6000000, f, DropBoxManager.IS_TEXT).writeToParcel(
    578                 parcel, Parcelable.PARCELABLE_WRITE_RETURN_VALUE);
    579         new DropBoxManager.Entry("binfile", 7000000, f, 0).writeToParcel(
    580                 parcel, Parcelable.PARCELABLE_WRITE_RETURN_VALUE);
    581         new DropBoxManager.Entry("emptyfile", 8000000, (ParcelFileDescriptor) null,
    582                 DropBoxManager.IS_EMPTY).writeToParcel(parcel, 0);
    583 
    584         try {
    585             new DropBoxManager.Entry("badfile", 99999, new File(dir, "nonexist.dat"), 0);
    586             fail("IOException expected for nonexistent file");
    587         } catch (IOException e) {
    588             // expected
    589         }
    590 
    591         try {
    592             new DropBoxManager.Entry("badfile", 99999, f, DropBoxManager.IS_EMPTY).writeToParcel(
    593                     parcel, 0);
    594             fail("IllegalArgumentException expected for non-null file and IS_EMPTY flags");
    595         } catch (IllegalArgumentException e) {
    596             // expected
    597         }
    598 
    599         try {
    600             new DropBoxManager.Entry("badfile", 99999, (ParcelFileDescriptor) null, 0);
    601             fail("IllegalArgumentException expected for null PFD and non-IS_EMPTY flags");
    602         } catch (IllegalArgumentException e) {
    603             // expected
    604         }
    605 
    606         File gz = new File(dir, "file.gz");
    607         GZIPOutputStream gzout = new GZIPOutputStream(new FileOutputStream(gz));
    608         gzout.write("Gzip File Value".getBytes());
    609         gzout.close();
    610 
    611         new DropBoxManager.Entry("gzipfile", 9000000, gz,
    612                 DropBoxManager.IS_TEXT | DropBoxManager.IS_GZIPPED).writeToParcel(
    613                     parcel, Parcelable.PARCELABLE_WRITE_RETURN_VALUE);
    614         new DropBoxManager.Entry("gzipbinfile", 10000000, gz,
    615                 DropBoxManager.IS_GZIPPED).writeToParcel(
    616                     parcel, Parcelable.PARCELABLE_WRITE_RETURN_VALUE);
    617 
    618         //
    619         // Switch from writing to reading
    620         //
    621 
    622         parcel.setDataPosition(0);
    623         DropBoxManager.Entry e;
    624 
    625         e = DropBoxManager.Entry.CREATOR.createFromParcel(parcel);
    626         assertEquals("empty", e.getTag());
    627         assertEquals(1000000, e.getTimeMillis());
    628         assertEquals(DropBoxManager.IS_EMPTY, e.getFlags());
    629         assertEquals(null, e.getText(100));
    630         assertEquals(null, e.getInputStream());
    631         e.close();
    632 
    633         e = DropBoxManager.Entry.CREATOR.createFromParcel(parcel);
    634         assertEquals("string", e.getTag());
    635         assertEquals(2000000, e.getTimeMillis());
    636         assertEquals(DropBoxManager.IS_TEXT, e.getFlags());
    637         assertEquals("String Value", e.getText(100));
    638         assertEquals("String Value",
    639                 new BufferedReader(new InputStreamReader(e.getInputStream())).readLine());
    640         e.close();
    641 
    642         e = DropBoxManager.Entry.CREATOR.createFromParcel(parcel);
    643         assertEquals("bytes", e.getTag());
    644         assertEquals(3000000, e.getTimeMillis());
    645         assertEquals(DropBoxManager.IS_TEXT, e.getFlags());
    646         assertEquals("Bytes Value", e.getText(100));
    647         e.close();
    648 
    649         e = DropBoxManager.Entry.CREATOR.createFromParcel(parcel);
    650         assertEquals("zerobytes", e.getTag());
    651         assertEquals(4000000, e.getTimeMillis());
    652         assertEquals(0, e.getFlags());
    653         assertEquals(null, e.getText(100));
    654         assertEquals(null,
    655                 new BufferedReader(new InputStreamReader(e.getInputStream())).readLine());
    656         e.close();
    657 
    658         e = DropBoxManager.Entry.CREATOR.createFromParcel(parcel);
    659         assertEquals("emptybytes", e.getTag());
    660         assertEquals(5000000, e.getTimeMillis());
    661         assertEquals(DropBoxManager.IS_EMPTY, e.getFlags());
    662         assertEquals(null, e.getText(100));
    663         assertEquals(null, e.getInputStream());
    664         e.close();
    665 
    666         e = DropBoxManager.Entry.CREATOR.createFromParcel(parcel);
    667         assertEquals("file", e.getTag());
    668         assertEquals(6000000, e.getTimeMillis());
    669         assertEquals(DropBoxManager.IS_TEXT, e.getFlags());
    670         assertEquals("File Value", e.getText(100));
    671         e.close();
    672 
    673         e = DropBoxManager.Entry.CREATOR.createFromParcel(parcel);
    674         assertEquals("binfile", e.getTag());
    675         assertEquals(7000000, e.getTimeMillis());
    676         assertEquals(0, e.getFlags());
    677         assertEquals(null, e.getText(100));
    678         assertEquals("File Value",
    679                 new BufferedReader(new InputStreamReader(e.getInputStream())).readLine());
    680         e.close();
    681 
    682         e = DropBoxManager.Entry.CREATOR.createFromParcel(parcel);
    683         assertEquals("emptyfile", e.getTag());
    684         assertEquals(8000000, e.getTimeMillis());
    685         assertEquals(DropBoxManager.IS_EMPTY, e.getFlags());
    686         assertEquals(null, e.getText(100));
    687         assertEquals(null, e.getInputStream());
    688         e.close();
    689 
    690         e = DropBoxManager.Entry.CREATOR.createFromParcel(parcel);
    691         assertEquals("gzipfile", e.getTag());
    692         assertEquals(9000000, e.getTimeMillis());
    693         assertEquals(DropBoxManager.IS_TEXT, e.getFlags());
    694         assertEquals("Gzip File Value", e.getText(100));
    695         e.close();
    696 
    697         e = DropBoxManager.Entry.CREATOR.createFromParcel(parcel);
    698         assertEquals("gzipbinfile", e.getTag());
    699         assertEquals(10000000, e.getTimeMillis());
    700         assertEquals(0, e.getFlags());
    701         assertEquals(null, e.getText(100));
    702         assertEquals("Gzip File Value",
    703                 new BufferedReader(new InputStreamReader(e.getInputStream())).readLine());
    704         e.close();
    705 
    706         assertEquals(0, parcel.dataAvail());
    707         parcel.recycle();
    708     }
    709 
    710     public void testDropBoxEntrySerializationDoesntLeakFileDescriptors() throws Exception {
    711         File dir = getEmptyDir("testDropBoxEntrySerialization");
    712         File f = new File(dir, "file.dat");
    713         FileOutputStream os = new FileOutputStream(f);
    714         os.write("File Value".getBytes());
    715         os.close();
    716 
    717         int before = countOpenFiles();
    718         assertTrue(before > 0);
    719 
    720         for (int i = 0; i < 1000; i++) {
    721             Parcel parcel = Parcel.obtain();
    722             new DropBoxManager.Entry("file", 1000000, f, 0).writeToParcel(
    723                     parcel, Parcelable.PARCELABLE_WRITE_RETURN_VALUE);
    724 
    725             parcel.setDataPosition(0);
    726             DropBoxManager.Entry e = DropBoxManager.Entry.CREATOR.createFromParcel(parcel);
    727             assertEquals("file", e.getTag());
    728             e.close();
    729 
    730             parcel.recycle();
    731         }
    732 
    733         int after = countOpenFiles();
    734         assertTrue(after > 0);
    735         assertTrue(after < before + 20);
    736     }
    737 
    738     private void addRandomEntry(DropBoxManager dropbox, String tag, int size) throws Exception {
    739         byte[] bytes = new byte[size];
    740         new Random(System.currentTimeMillis()).nextBytes(bytes);
    741 
    742         File f = new File(getEmptyDir("addRandomEntry"), "random.dat");
    743         FileOutputStream os = new FileOutputStream(f);
    744         os.write(bytes);
    745         os.close();
    746 
    747         dropbox.addFile(tag, f, 0);
    748     }
    749 
    750     private int getEntrySize(DropBoxManager.Entry e) throws Exception {
    751         InputStream is = e.getInputStream();
    752         if (is == null) return -1;
    753         int length = 0;
    754         while (is.read() != -1) length++;
    755         return length;
    756     }
    757 
    758     private void recursiveDelete(File file) {
    759         if (!file.delete() && file.isDirectory()) {
    760             for (File f : file.listFiles()) recursiveDelete(f);
    761             file.delete();
    762         }
    763     }
    764 
    765     private File getEmptyDir(String name) {
    766         File dir = getContext().getDir("DropBoxTest." + name, 0);
    767         for (File f : dir.listFiles()) recursiveDelete(f);
    768         assertTrue(dir.listFiles().length == 0);
    769         return dir;
    770     }
    771 
    772     private int countOpenFiles() {
    773         return new File("/proc/" + Process.myPid() + "/fd").listFiles().length;
    774     }
    775 }
    776