src/chrome/browser/extensions/updater/local_extension_cache_unittest.cc

   1 // Copyright 2014 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 "chrome/browser/extensions/updater/local_extension_cache.h"
   6
   7 #include "base/bind.h"
   8 #include "base/files/file_path.h"
   9 #include "base/files/file_util.h"
  10 #include "base/files/scoped_temp_dir.h"
  11 #include "base/run_loop.h"
  12 #include "base/test/sequenced_worker_pool_owner.h"
  13 #include "base/values.h"
  14 #include "chrome/common/extensions/extension_constants.h"
  15 #include "content/public/browser/browser_thread.h"
  16 #include "content/public/test/test_browser_thread_bundle.h"
  17 #include "content/public/test/test_utils.h"
  18 #include "testing/gtest/include/gtest/gtest.h"
  19
  20 namespace {
  21
  22 const char kTestExtensionId1[] = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
  23 const char kTestExtensionId2[] = "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb";
  24 const char kTestExtensionId3[] = "cccccccccccccccccccccccccccccccc";
  25
  26 }  // namespace
  27
  28 namespace extensions {
  29
  30 class LocalExtensionCacheTest : public testing::Test {
  31  public:
  32   LocalExtensionCacheTest() {}
  33   virtual ~LocalExtensionCacheTest() {}
  34
  35   scoped_refptr<base::SequencedTaskRunner> background_task_runner() {
  36     return background_task_runner_;
  37   }
  38
  39   // testing::Test overrides:
  40   virtual void SetUp() override {
  41     pool_owner_.reset(
  42         new base::SequencedWorkerPoolOwner(3, "Background Pool"));
  43     background_task_runner_ = pool_owner_->pool()->GetSequencedTaskRunner(
  44         pool_owner_->pool()->GetNamedSequenceToken("background"));
  45   }
  46
  47   virtual void TearDown() override {
  48     pool_owner_->pool()->Shutdown();
  49     base::RunLoop().RunUntilIdle();
  50   }
  51
  52   base::FilePath CreateCacheDir(bool initialized) {
  53     EXPECT_TRUE(cache_dir_.CreateUniqueTempDir());
  54     if (initialized)
  55       CreateFlagFile(cache_dir_.path());
  56     return cache_dir_.path();
  57   }
  58
  59   base::FilePath CreateTempDir() {
  60     EXPECT_TRUE(temp_dir_.CreateUniqueTempDir());
  61     return temp_dir_.path();
  62   }
  63
  64   void CreateFlagFile(const base::FilePath& dir) {
  65     CreateFile(dir.Append(
  66         extensions::LocalExtensionCache::kCacheReadyFlagFileName),
  67         0, base::Time::Now());
  68   }
  69
  70   void CreateExtensionFile(const base::FilePath& dir,
  71                            const std::string& id,
  72                            const std::string& version,
  73                            size_t size,
  74                            const base::Time& timestamp) {
  75     CreateFile(GetExtensionFileName(dir, id, version), size, timestamp);
  76   }
  77
  78   void CreateFile(const base::FilePath& file,
  79                   size_t size,
  80                   const base::Time& timestamp) {
  81     std::string data(size, 0);
  82     EXPECT_EQ(base::WriteFile(file, data.data(), data.size()), int(size));
  83     EXPECT_TRUE(base::TouchFile(file, timestamp, timestamp));
  84   }
  85
  86   base::FilePath GetExtensionFileName(const base::FilePath& dir,
  87                                       const std::string& id,
  88                                       const std::string& version) {
  89     return dir.Append(id + "-" + version + ".crx");
  90   }
  91
  92   void WaitForCompletion() {
  93     // In the worst case you need to repeat this up to 3 times to make sure that
  94     // all pending tasks we sent from UI thread to task runner and back to UI.
  95     for (int i = 0; i < 3; i++) {
  96       // Wait for background task completion that sends replay to UI thread.
  97       pool_owner_->pool()->FlushForTesting();
  98       // Wait for UI thread task completion.
  99       base::RunLoop().RunUntilIdle();
 100     }
 101   }
 102
 103  private:
 104   content::TestBrowserThreadBundle thread_bundle_;
 105
 106   scoped_ptr<base::SequencedWorkerPoolOwner> pool_owner_;
 107   scoped_refptr<base::SequencedTaskRunner> background_task_runner_;
 108
 109   base::ScopedTempDir cache_dir_;
 110   base::ScopedTempDir temp_dir_;
 111
 112   DISALLOW_COPY_AND_ASSIGN(LocalExtensionCacheTest);
 113 };
 114
 115 static void SimpleCallback(bool* ptr) {
 116   *ptr = true;
 117 }
 118
 119 TEST_F(LocalExtensionCacheTest, Basic) {
 120   base::FilePath cache_dir(CreateCacheDir(false));
 121
 122   LocalExtensionCache cache(cache_dir,
 123                             1000,
 124                             base::TimeDelta::FromDays(30),
 125                             background_task_runner());
 126   cache.SetCacheStatusPollingDelayForTests(base::TimeDelta());
 127
 128   bool initialized = false;
 129   cache.Init(true, base::Bind(&SimpleCallback, &initialized));
 130
 131   WaitForCompletion();
 132   EXPECT_FALSE(initialized);
 133
 134   CreateExtensionFile(cache_dir, kTestExtensionId1, "1.0", 100,
 135                       base::Time::Now() - base::TimeDelta::FromDays(1));
 136   CreateExtensionFile(cache_dir, kTestExtensionId1, "0.1", 100,
 137                       base::Time::Now() - base::TimeDelta::FromDays(10));
 138   CreateExtensionFile(cache_dir, kTestExtensionId2, "2.0", 100,
 139                       base::Time::Now() - base::TimeDelta::FromDays(40));
 140   CreateExtensionFile(cache_dir, kTestExtensionId3, "3.0", 900,
 141                       base::Time::Now() - base::TimeDelta::FromDays(41));
 142
 143   CreateFlagFile(cache_dir);
 144
 145   WaitForCompletion();
 146   ASSERT_TRUE(initialized);
 147
 148   // Older version should be removed on cache initialization.
 149   EXPECT_FALSE(base::PathExists(
 150       GetExtensionFileName(cache_dir, kTestExtensionId1, "0.1")));
 151
 152   // All extensions should be there because cleanup happens on shutdown to
 153   // support use case when device was not used to more than 30 days and cache
 154   // shouldn't be cleaned before someone will have a chance to use it.
 155   EXPECT_TRUE(cache.GetExtension(kTestExtensionId1, NULL, NULL));
 156   EXPECT_TRUE(cache.GetExtension(kTestExtensionId2, NULL, NULL));
 157   EXPECT_TRUE(cache.GetExtension(kTestExtensionId3, NULL, NULL));
 158
 159   bool did_shutdown = false;
 160   cache.Shutdown(base::Bind(&SimpleCallback, &did_shutdown));
 161   WaitForCompletion();
 162   ASSERT_TRUE(did_shutdown);
 163
 164   EXPECT_TRUE(base::PathExists(
 165       GetExtensionFileName(cache_dir, kTestExtensionId1, "1.0")));
 166   EXPECT_FALSE(base::PathExists(
 167       GetExtensionFileName(cache_dir, kTestExtensionId2, "2.0")));
 168   EXPECT_FALSE(base::PathExists(
 169       GetExtensionFileName(cache_dir, kTestExtensionId3, "3.0")));
 170 }
 171
 172 }  // namespace extensions