apps/saved_files_service_unittest.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include <algorithm>
   6
   7 #include "apps/saved_files_service.h"
   8 #include "base/files/file_path.h"
   9 #include "base/strings/string_number_conversions.h"
  10 #include "base/test/values_test_util.h"
  11 #include "base/values.h"
  12 #include "chrome/browser/extensions/extension_prefs.h"
  13 #include "chrome/browser/extensions/extension_service.h"
  14 #include "chrome/browser/extensions/extension_system.h"
  15 #include "chrome/browser/extensions/test_extension_environment.h"
  16 #include "chrome/common/extensions/extension.h"
  17 #include "chrome/test/base/testing_profile.h"
  18 #include "testing/gtest/include/gtest/gtest.h"
  19
  20 #if !defined(OS_ANDROID)
  21
  22 #define TRACE_CALL(expression) \
  23   do {                         \
  24     SCOPED_TRACE(#expression); \
  25     expression;                \
  26   } while (0)
  27
  28 using apps::SavedFileEntry;
  29 using apps::SavedFilesService;
  30
  31 namespace {
  32
  33 std::string GenerateId(int i) {
  34   return base::IntToString(i) + ":filename.ext";
  35 }
  36
  37 }  // namespace
  38
  39 class SavedFilesServiceUnitTest : public testing::Test {
  40  protected:
  41   virtual void SetUp() OVERRIDE {
  42     testing::Test::SetUp();
  43     extension_ = env_.MakeExtension(*base::test::ParseJson(
  44         "{"
  45         "  \"app\": {"
  46         "    \"background\": {"
  47         "      \"scripts\": [\"background.js\"]"
  48         "    }"
  49         "  },"
  50         "  \"permissions\": ["
  51         "    {\"fileSystem\": [\"retainEntries\"]}"
  52         "  ]"
  53         "}"));
  54     service_ = SavedFilesService::Get(env_.profile());
  55     path_ = base::FilePath(FILE_PATH_LITERAL("filename.ext"));
  56   }
  57
  58   virtual void TearDown() OVERRIDE {
  59     SavedFilesService::ClearMaxSequenceNumberForTest();
  60     SavedFilesService::ClearLruSizeForTest();
  61     testing::Test::TearDown();
  62   }
  63
  64   // Check that a registered file entry has the correct value.
  65   void CheckEntrySequenceNumber(int id, int sequence_number) {
  66     std::string id_string = GenerateId(id);
  67     SCOPED_TRACE(id_string);
  68     EXPECT_TRUE(service_->IsRegistered(extension_->id(), id_string));
  69     const SavedFileEntry* entry =
  70         service_->GetFileEntry(extension_->id(), id_string);
  71     ASSERT_TRUE(entry);
  72     EXPECT_EQ(id_string, entry->id);
  73     EXPECT_EQ(path_, entry->path);
  74     EXPECT_TRUE(entry->writable);
  75     EXPECT_EQ(sequence_number, entry->sequence_number);
  76   }
  77
  78   // Check that a range of registered file entries have the correct values.
  79   void CheckRangeEnqueuedInOrder(int start, int end) {
  80     SavedFileEntry entry;
  81     for (int i = start; i < end; i++) {
  82       CheckEntrySequenceNumber(i, i + 1);
  83     }
  84   }
  85
  86   extensions::TestExtensionEnvironment env_;
  87   const extensions::Extension* extension_;
  88   SavedFilesService* service_;
  89   base::FilePath path_;
  90 };
  91
  92 TEST_F(SavedFilesServiceUnitTest, RetainTwoFilesTest) {
  93   service_->RegisterFileEntry(extension_->id(), GenerateId(1), path_, true);
  94   service_->RegisterFileEntry(extension_->id(), GenerateId(2), path_, true);
  95   service_->RegisterFileEntry(extension_->id(), GenerateId(3), path_, true);
  96
  97   // Test that no entry has a sequence number.
  98   TRACE_CALL(CheckEntrySequenceNumber(1, 0));
  99   TRACE_CALL(CheckEntrySequenceNumber(2, 0));
 100   TRACE_CALL(CheckEntrySequenceNumber(3, 0));
 101
 102   // Test that only entry #1 has a sequence number.
 103   service_->EnqueueFileEntry(extension_->id(), GenerateId(1));
 104   TRACE_CALL(CheckEntrySequenceNumber(1, 1));
 105   TRACE_CALL(CheckEntrySequenceNumber(2, 0));
 106
 107   // Test that entry #1 has not changed sequence number because it is the most
 108   // recently enqueued entry.
 109   service_->EnqueueFileEntry(extension_->id(), GenerateId(1));
 110   TRACE_CALL(CheckEntrySequenceNumber(1, 1));
 111   TRACE_CALL(CheckEntrySequenceNumber(2, 0));
 112
 113   // Test that entry #1 is unchanged and entry #2 has been assigned the next
 114   // sequence number.
 115   service_->EnqueueFileEntry(extension_->id(), GenerateId(2));
 116   TRACE_CALL(CheckEntrySequenceNumber(1, 1));
 117   TRACE_CALL(CheckEntrySequenceNumber(2, 2));
 118
 119   // Test that both entries #1 and #2 are unchanged because #2 is the most
 120   // recently enqueued entry.
 121   service_->EnqueueFileEntry(extension_->id(), GenerateId(2));
 122   TRACE_CALL(CheckEntrySequenceNumber(1, 1));
 123   TRACE_CALL(CheckEntrySequenceNumber(2, 2));
 124
 125   // Test that entry #1 has been assigned the next sequence number.
 126   service_->EnqueueFileEntry(extension_->id(), GenerateId(1));
 127   TRACE_CALL(CheckEntrySequenceNumber(1, 3));
 128   TRACE_CALL(CheckEntrySequenceNumber(2, 2));
 129   TRACE_CALL(CheckEntrySequenceNumber(3, 0));
 130
 131   EXPECT_FALSE(service_->IsRegistered(extension_->id(), "another id"));
 132   SavedFileEntry entry;
 133   EXPECT_FALSE(service_->GetFileEntry(extension_->id(), "another id"));
 134
 135   // ClearQueueIfNoRetainPermission should be a no-op because the app has the
 136   // fileSystem.retainEntries permission.
 137   service_->ClearQueueIfNoRetainPermission(extension_);
 138   TRACE_CALL(CheckEntrySequenceNumber(1, 3));
 139   TRACE_CALL(CheckEntrySequenceNumber(2, 2));
 140   TRACE_CALL(CheckEntrySequenceNumber(3, 0));
 141
 142   // Test that after a clear, retained file entries are unchanged, but file
 143   // entries that have been registered but not retained are no longer
 144   // registered.
 145   service_->Clear(extension_->id());
 146   TRACE_CALL(CheckEntrySequenceNumber(1, 3));
 147   TRACE_CALL(CheckEntrySequenceNumber(2, 2));
 148   EXPECT_FALSE(service_->IsRegistered(extension_->id(), GenerateId(3)));
 149 }
 150
 151 TEST_F(SavedFilesServiceUnitTest, NoRetainEntriesPermissionTest) {
 152   extension_ = env_.MakeExtension(*base::test::ParseJson(
 153       "{\"app\": {\"background\": {\"scripts\": [\"background.js\"]}},"
 154       "\"permissions\": [\"fileSystem\"]}"));
 155   service_->RegisterFileEntry(extension_->id(), GenerateId(1), path_, true);
 156   TRACE_CALL(CheckEntrySequenceNumber(1, 0));
 157   SavedFileEntry entry;
 158   service_->EnqueueFileEntry(extension_->id(), GenerateId(1));
 159   TRACE_CALL(CheckEntrySequenceNumber(1, 1));
 160   EXPECT_FALSE(service_->IsRegistered(extension_->id(), "another id"));
 161   EXPECT_FALSE(service_->GetFileEntry(extension_->id(), "another id"));
 162
 163   // ClearQueueIfNoRetainPermission should clear the queue, since the app does
 164   // not have the "retainEntries" permission.
 165   service_->ClearQueueIfNoRetainPermission(extension_);
 166   std::vector<SavedFileEntry> entries =
 167       service_->GetAllFileEntries(extension_->id());
 168   EXPECT_TRUE(entries.empty());
 169 }
 170
 171 TEST_F(SavedFilesServiceUnitTest, EvictionTest) {
 172   SavedFilesService::SetLruSizeForTest(10);
 173   for (int i = 0; i < 10; i++) {
 174     service_->RegisterFileEntry(extension_->id(), GenerateId(i), path_, true);
 175     service_->EnqueueFileEntry(extension_->id(), GenerateId(i));
 176   }
 177   service_->RegisterFileEntry(extension_->id(), GenerateId(10), path_, true);
 178
 179   // Expect that entries 0 to 9 are in the queue, but 10 is not.
 180   TRACE_CALL(CheckRangeEnqueuedInOrder(0, 10));
 181   TRACE_CALL(CheckEntrySequenceNumber(10, 0));
 182   service_->EnqueueFileEntry(extension_->id(), GenerateId(10));
 183
 184   // Expect that entries 1 to 10 are in the queue, but entry 0 is not.
 185   TRACE_CALL(CheckEntrySequenceNumber(0, 0));
 186   TRACE_CALL(CheckRangeEnqueuedInOrder(1, 11));
 187
 188   // Check that retained entries are unchanged after a clear.
 189   service_->Clear(extension_->id());
 190   SavedFileEntry entry;
 191   EXPECT_FALSE(service_->GetFileEntry(extension_->id(), GenerateId(0)));
 192   TRACE_CALL(CheckRangeEnqueuedInOrder(1, 11));
 193
 194   // Expect that entry 2 is now at the back of the queue, and no further entries
 195   // have been evicted.
 196   service_->EnqueueFileEntry(extension_->id(), GenerateId(2));
 197   TRACE_CALL(CheckEntrySequenceNumber(2, 12));
 198   TRACE_CALL(CheckRangeEnqueuedInOrder(1, 1));
 199   TRACE_CALL(CheckRangeEnqueuedInOrder(3, 11));
 200
 201   // Check that retained entries are unchanged after a clear.
 202   service_->Clear(extension_->id());
 203   TRACE_CALL(CheckEntrySequenceNumber(2, 12));
 204   TRACE_CALL(CheckRangeEnqueuedInOrder(1, 1));
 205   TRACE_CALL(CheckRangeEnqueuedInOrder(3, 11));
 206 }
 207
 208 TEST_F(SavedFilesServiceUnitTest, SequenceNumberCompactionTest) {
 209   SavedFilesService::SetMaxSequenceNumberForTest(8);
 210   SavedFilesService::SetLruSizeForTest(8);
 211   for (int i = 0; i < 4; i++) {
 212     service_->RegisterFileEntry(extension_->id(), GenerateId(i), path_, true);
 213     service_->EnqueueFileEntry(extension_->id(), GenerateId(i));
 214   }
 215   service_->EnqueueFileEntry(extension_->id(), GenerateId(2));
 216   service_->EnqueueFileEntry(extension_->id(), GenerateId(3));
 217   service_->EnqueueFileEntry(extension_->id(), GenerateId(2));
 218
 219   // The sequence numbers should be sparse, as they have not gone over the
 220   // limit.
 221   TRACE_CALL(CheckEntrySequenceNumber(0, 1));
 222   TRACE_CALL(CheckEntrySequenceNumber(1, 2));
 223   TRACE_CALL(CheckEntrySequenceNumber(2, 7));
 224   TRACE_CALL(CheckEntrySequenceNumber(3, 6));
 225   service_->Clear(extension_->id());
 226   TRACE_CALL(CheckEntrySequenceNumber(0, 1));
 227   TRACE_CALL(CheckEntrySequenceNumber(1, 2));
 228   TRACE_CALL(CheckEntrySequenceNumber(2, 7));
 229   TRACE_CALL(CheckEntrySequenceNumber(3, 6));
 230
 231   // This should push the sequence number to the limit of 8, and trigger a
 232   // sequence number compaction. Expect that the sequence numbers are
 233   // contiguous from 1 to 4.
 234   service_->EnqueueFileEntry(extension_->id(), GenerateId(3));
 235   TRACE_CALL(CheckRangeEnqueuedInOrder(0, 4));
 236   service_->Clear(extension_->id());
 237   TRACE_CALL(CheckRangeEnqueuedInOrder(0, 4));
 238 }
 239 #endif