content/browser/appcache/appcache_disk_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 "base/bind.h"
   6 #include "base/file_util.h"
   7 #include "base/files/scoped_temp_dir.h"
   8 #include "base/message_loop/message_loop_proxy.h"
   9 #include "base/run_loop.h"
  10 #include "content/browser/appcache/appcache_disk_cache.h"
  11 #include "net/base/io_buffer.h"
  12 #include "net/base/net_errors.h"
  13 #include "testing/gtest/include/gtest/gtest.h"
  14
  15 namespace content {
  16
  17 class AppCacheDiskCacheTest : public testing::Test {
  18  public:
  19   AppCacheDiskCacheTest() {}
  20
  21   virtual void SetUp() OVERRIDE {
  22     // Use the current thread for the DiskCache's cache_thread.
  23     message_loop_.reset(new base::MessageLoopForIO());
  24     cache_thread_ = base::MessageLoopProxy::current();
  25     ASSERT_TRUE(directory_.CreateUniqueTempDir());
  26     completion_callback_ = base::Bind(
  27         &AppCacheDiskCacheTest::OnComplete,
  28         base::Unretained(this));
  29   }
  30
  31   virtual void TearDown() OVERRIDE {
  32     base::RunLoop().RunUntilIdle();
  33     message_loop_.reset(NULL);
  34   }
  35
  36   void FlushCacheTasks() {
  37     base::RunLoop().RunUntilIdle();
  38   }
  39
  40   void OnComplete(int err) {
  41     completion_results_.push_back(err);
  42   }
  43
  44   base::ScopedTempDir directory_;
  45   scoped_ptr<base::MessageLoop> message_loop_;
  46   scoped_refptr<base::MessageLoopProxy> cache_thread_;
  47   net::CompletionCallback completion_callback_;
  48   std::vector<int> completion_results_;
  49
  50   static const int k10MBytes = 10 * 1024 * 1024;
  51 };
  52
  53 TEST_F(AppCacheDiskCacheTest, DisablePriorToInitCompletion) {
  54   AppCacheDiskCache::Entry* entry = NULL;
  55
  56   // Create an instance and start it initializing, queue up
  57   // one of each kind of "entry" function.
  58   scoped_ptr<AppCacheDiskCache> disk_cache(new AppCacheDiskCache);
  59   EXPECT_FALSE(disk_cache->is_disabled());
  60   disk_cache->InitWithDiskBackend(
  61       directory_.path(), k10MBytes, false, cache_thread_,
  62       completion_callback_);
  63   disk_cache->CreateEntry(1, &entry, completion_callback_);
  64   disk_cache->OpenEntry(2, &entry, completion_callback_);
  65   disk_cache->DoomEntry(3, completion_callback_);
  66
  67   // Pull the plug on all that.
  68   EXPECT_FALSE(disk_cache->is_disabled());
  69   disk_cache->Disable();
  70   EXPECT_TRUE(disk_cache->is_disabled());
  71
  72   FlushCacheTasks();
  73
  74   EXPECT_EQ(NULL, entry);
  75   EXPECT_EQ(4u, completion_results_.size());
  76   for (std::vector<int>::const_iterator iter = completion_results_.begin();
  77        iter < completion_results_.end(); ++iter) {
  78     EXPECT_EQ(net::ERR_ABORTED, *iter);
  79   }
  80
  81   // Ensure the directory can be deleted at this point.
  82   EXPECT_TRUE(base::DirectoryExists(directory_.path()));
  83   EXPECT_FALSE(base::IsDirectoryEmpty(directory_.path()));
  84   EXPECT_TRUE(base::DeleteFile(directory_.path(), true));
  85   EXPECT_FALSE(base::DirectoryExists(directory_.path()));
  86 }
  87
  88 TEST_F(AppCacheDiskCacheTest, DisableAfterInitted) {
  89   // Create an instance and let it fully init.
  90   scoped_ptr<AppCacheDiskCache> disk_cache(new AppCacheDiskCache);
  91   EXPECT_FALSE(disk_cache->is_disabled());
  92   disk_cache->InitWithDiskBackend(
  93       directory_.path(), k10MBytes, false, cache_thread_,
  94       completion_callback_);
  95   FlushCacheTasks();
  96   EXPECT_EQ(1u, completion_results_.size());
  97   EXPECT_EQ(net::OK, completion_results_[0]);
  98
  99   // Pull the plug
 100   disk_cache->Disable();
 101   FlushCacheTasks();
 102
 103   // Ensure the directory can be deleted at this point.
 104   EXPECT_TRUE(base::DirectoryExists(directory_.path()));
 105   EXPECT_FALSE(base::IsDirectoryEmpty(directory_.path()));
 106   EXPECT_TRUE(base::DeleteFile(directory_.path(), true));
 107   EXPECT_FALSE(base::DirectoryExists(directory_.path()));
 108
 109   // Methods should return immediately when disabled and not invoke
 110   // the callback at all.
 111   AppCacheDiskCache::Entry* entry = NULL;
 112   completion_results_.clear();
 113   EXPECT_EQ(net::ERR_ABORTED,
 114             disk_cache->CreateEntry(1, &entry, completion_callback_));
 115   EXPECT_EQ(net::ERR_ABORTED,
 116             disk_cache->OpenEntry(2, &entry, completion_callback_));
 117   EXPECT_EQ(net::ERR_ABORTED,
 118             disk_cache->DoomEntry(3, completion_callback_));
 119   FlushCacheTasks();
 120   EXPECT_TRUE(completion_results_.empty());
 121 }
 122
 123 // Flaky on Android: http://crbug.com/339534
 124 TEST_F(AppCacheDiskCacheTest, DISABLED_DisableWithEntriesOpen) {
 125   // Create an instance and let it fully init.
 126   scoped_ptr<AppCacheDiskCache> disk_cache(new AppCacheDiskCache);
 127   EXPECT_FALSE(disk_cache->is_disabled());
 128   disk_cache->InitWithDiskBackend(
 129       directory_.path(), k10MBytes, false, cache_thread_,
 130       completion_callback_);
 131   FlushCacheTasks();
 132   EXPECT_EQ(1u, completion_results_.size());
 133   EXPECT_EQ(net::OK, completion_results_[0]);
 134
 135   // Note: We don't have detailed expectations of the DiskCache
 136   // operations because on android it's really SimpleCache which
 137   // does behave differently.
 138   //
 139   // What matters for the corruption handling and service reinitiazation
 140   // is that the directory can be deleted after the calling Disable() method,
 141   // and we do have expectations about that.
 142
 143   // Create/open some entries.
 144   AppCacheDiskCache::Entry* entry1 = NULL;
 145   AppCacheDiskCache::Entry* entry2 = NULL;
 146   disk_cache->CreateEntry(1, &entry1, completion_callback_);
 147   disk_cache->CreateEntry(2, &entry2, completion_callback_);
 148   FlushCacheTasks();
 149   EXPECT_TRUE(entry1);
 150   EXPECT_TRUE(entry2);
 151
 152   // Write something to one of the entries and flush it.
 153   const char* kData = "Hello";
 154   const int kDataLen = strlen(kData) + 1;
 155   scoped_refptr<net::IOBuffer> write_buf(new net::WrappedIOBuffer(kData));
 156   entry1->Write(0, 0, write_buf, kDataLen, completion_callback_);
 157   FlushCacheTasks();
 158
 159   // Queue up a read and a write.
 160   scoped_refptr<net::IOBuffer> read_buf = new net::IOBuffer(kDataLen);
 161   entry1->Read(0, 0, read_buf.get(), kDataLen, completion_callback_);
 162   entry2->Write(0, 0, write_buf.get(), kDataLen, completion_callback_);
 163
 164   // Pull the plug
 165   disk_cache->Disable();
 166   FlushCacheTasks();
 167
 168   // Ensure the directory can be deleted at this point.
 169   EXPECT_TRUE(base::DirectoryExists(directory_.path()));
 170   EXPECT_FALSE(base::IsDirectoryEmpty(directory_.path()));
 171   EXPECT_TRUE(base::DeleteFile(directory_.path(), true));
 172   EXPECT_FALSE(base::DirectoryExists(directory_.path()));
 173
 174   disk_cache.reset(NULL);
 175
 176   // Also, new IO operations should fail immediately.
 177   EXPECT_EQ(
 178       net::ERR_ABORTED,
 179       entry1->Read(0, 0, read_buf.get(), kDataLen, completion_callback_));
 180   entry1->Close();
 181   entry2->Close();
 182
 183   FlushCacheTasks();
 184 }
 185
 186 }  // namespace content