chrome/browser/net/net_log_temp_file_unittest.cc

   1 // Copyright (c) 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 "chrome/browser/net/net_log_temp_file.h"
   6
   7 #include "base/basictypes.h"
   8 #include "base/file_util.h"
   9 #include "base/files/file_path.h"
  10 #include "base/message_loop/message_loop.h"
  11 #include "base/values.h"
  12 #include "build/build_config.h"
  13 #include "chrome/browser/net/chrome_net_log.h"
  14 #include "content/public/test/test_browser_thread.h"
  15 #include "testing/gtest/include/gtest/gtest.h"
  16
  17 using content::BrowserThread;
  18
  19 class TestNetLogTempFile : public NetLogTempFile {
  20  public:
  21   explicit TestNetLogTempFile(ChromeNetLog* chrome_net_log)
  22       : NetLogTempFile(chrome_net_log),
  23         lie_about_net_export_log_directory_(false),
  24         lie_about_file_existence_(false) {
  25   }
  26
  27   // NetLogTempFile implementation:
  28   virtual bool GetNetExportLogDirectory(base::FilePath* path) OVERRIDE {
  29     if (lie_about_net_export_log_directory_)
  30       return false;
  31     return NetLogTempFile::GetNetExportLogDirectory(path);
  32   }
  33
  34   virtual bool NetExportLogExists() OVERRIDE {
  35     if (lie_about_file_existence_)
  36       return false;
  37     return NetLogTempFile::NetExportLogExists();
  38   }
  39
  40   void set_lie_about_net_export_log_directory(
  41       bool lie_about_net_export_log_directory) {
  42     lie_about_net_export_log_directory_ = lie_about_net_export_log_directory;
  43   }
  44
  45   void set_lie_about_file_existence(bool lie_about_file_existence) {
  46     lie_about_file_existence_ = lie_about_file_existence;
  47   }
  48
  49  private:
  50   bool lie_about_net_export_log_directory_;
  51   bool lie_about_file_existence_;
  52 };
  53
  54 class NetLogTempFileTest : public ::testing::Test {
  55  public:
  56   NetLogTempFileTest()
  57       : net_log_(new ChromeNetLog),
  58         net_log_temp_file_(new TestNetLogTempFile(net_log_.get())),
  59         file_user_blocking_thread_(BrowserThread::FILE_USER_BLOCKING,
  60                                    &message_loop_) {
  61   }
  62
  63   // ::testing::Test implementation:
  64   virtual void SetUp() OVERRIDE {
  65     // Get a temporary file name for unit tests.
  66     base::FilePath net_log_dir;
  67     ASSERT_TRUE(net_log_temp_file_->GetNetExportLogDirectory(&net_log_dir));
  68     ASSERT_TRUE(file_util::CreateTemporaryFileInDir(net_log_dir,
  69                                                     &net_export_log_));
  70
  71     net_log_temp_file_->log_filename_ = net_export_log_.BaseName().value();
  72
  73     // CreateTemporaryFileInDir may return a legacy 8.3 file name on windows.
  74     // Need to use the original directory name for string comparisons.
  75     ASSERT_TRUE(net_log_temp_file_->GetNetExportLog());
  76     net_export_log_ = net_log_temp_file_->log_path_;
  77     ASSERT_FALSE(net_export_log_.empty());
  78   }
  79
  80   virtual void TearDown() OVERRIDE {
  81     // Delete the temporary file we have created.
  82     ASSERT_TRUE(base::DeleteFile(net_export_log_, false));
  83   }
  84
  85   std::string GetStateString() const {
  86     scoped_ptr<base::DictionaryValue> dict(net_log_temp_file_->GetState());
  87     std::string state;
  88     EXPECT_TRUE(dict->GetString("state", &state));
  89     return state;
  90   }
  91
  92   // Make sure the export file has been created and is non-empty, as net
  93   // constants will always be written to it on creation.
  94   void VerifyNetExportLog() {
  95     EXPECT_EQ(net_export_log_, net_log_temp_file_->log_path_);
  96     EXPECT_TRUE(base::PathExists(net_export_log_));
  97
  98     int64 file_size;
  99     // file_util::GetFileSize returns proper file size on open handles.
 100     EXPECT_TRUE(file_util::GetFileSize(net_export_log_, &file_size));
 101     EXPECT_GT(file_size, 0);
 102   }
 103
 104   // Verify state and GetFilePath return correct values if EnsureInit() fails.
 105   void VerifyFilePathAndStateAfterEnsureInitFailure() {
 106     EXPECT_EQ("UNINITIALIZED", GetStateString());
 107     EXPECT_EQ(NetLogTempFile::STATE_UNINITIALIZED,
 108               net_log_temp_file_->state());
 109
 110     base::FilePath net_export_file_path;
 111     EXPECT_FALSE(net_log_temp_file_->GetFilePath(&net_export_file_path));
 112   }
 113
 114   // When we lie in NetExportLogExists, make sure state and GetFilePath return
 115   // correct values.
 116   void VerifyFilePathAndStateAfterEnsureInit() {
 117     EXPECT_EQ("ALLOW_START", GetStateString());
 118     EXPECT_EQ(NetLogTempFile::STATE_ALLOW_START, net_log_temp_file_->state());
 119
 120     base::FilePath net_export_file_path;
 121     EXPECT_FALSE(net_log_temp_file_->GetFilePath(&net_export_file_path));
 122     EXPECT_FALSE(net_log_temp_file_->NetExportLogExists());
 123   }
 124
 125   // Make sure the export file has been successfully initialized.
 126   void VerifyFileAndStateAfterDoStart() {
 127     EXPECT_EQ("ALLOW_STOP", GetStateString());
 128     EXPECT_EQ(NetLogTempFile::STATE_ALLOW_STOP, net_log_temp_file_->state());
 129
 130     // Check GetFilePath returns false, if we are still writing to file.
 131     base::FilePath net_export_file_path;
 132     EXPECT_FALSE(net_log_temp_file_->GetFilePath(&net_export_file_path));
 133
 134     VerifyNetExportLog();
 135   }
 136
 137   // Make sure the export file has been successfully initialized.
 138   void VerifyFileAndStateAfterDoStop() {
 139     EXPECT_EQ("ALLOW_START_SEND", GetStateString());
 140     EXPECT_EQ(NetLogTempFile::STATE_ALLOW_START_SEND,
 141               net_log_temp_file_->state());
 142
 143     base::FilePath net_export_file_path;
 144     EXPECT_TRUE(net_log_temp_file_->GetFilePath(&net_export_file_path));
 145     EXPECT_TRUE(base::PathExists(net_export_file_path));
 146     EXPECT_EQ(net_export_log_, net_export_file_path);
 147
 148     VerifyNetExportLog();
 149   }
 150
 151   scoped_ptr<ChromeNetLog> net_log_;
 152   // |net_log_temp_file_| is initialized after |net_log_| so that it can stop
 153   // obvserving on destruction.
 154   scoped_ptr<TestNetLogTempFile> net_log_temp_file_;
 155   base::FilePath net_export_log_;
 156
 157  private:
 158   base::MessageLoop message_loop_;
 159   content::TestBrowserThread file_user_blocking_thread_;
 160 };
 161
 162 TEST_F(NetLogTempFileTest, EnsureInitFailure) {
 163   net_log_temp_file_->set_lie_about_net_export_log_directory(true);
 164
 165   EXPECT_FALSE(net_log_temp_file_->EnsureInit());
 166   VerifyFilePathAndStateAfterEnsureInitFailure();
 167
 168   net_log_temp_file_->ProcessCommand(NetLogTempFile::DO_START);
 169   VerifyFilePathAndStateAfterEnsureInitFailure();
 170 }
 171
 172 TEST_F(NetLogTempFileTest, EnsureInitAllowStart) {
 173   net_log_temp_file_->set_lie_about_file_existence(true);
 174
 175   EXPECT_TRUE(net_log_temp_file_->EnsureInit());
 176   VerifyFilePathAndStateAfterEnsureInit();
 177
 178   // Calling EnsureInit() second time should be a no-op.
 179   EXPECT_TRUE(net_log_temp_file_->EnsureInit());
 180   VerifyFilePathAndStateAfterEnsureInit();
 181 }
 182
 183 TEST_F(NetLogTempFileTest, EnsureInitAllowStartOrSend) {
 184   EXPECT_TRUE(net_log_temp_file_->EnsureInit());
 185
 186   EXPECT_EQ("ALLOW_START_SEND", GetStateString());
 187   EXPECT_EQ(NetLogTempFile::STATE_ALLOW_START_SEND,
 188             net_log_temp_file_->state());
 189   EXPECT_EQ(net_export_log_, net_log_temp_file_->log_path_);
 190   EXPECT_TRUE(base::PathExists(net_export_log_));
 191
 192   base::FilePath net_export_file_path;
 193   EXPECT_TRUE(net_log_temp_file_->GetFilePath(&net_export_file_path));
 194   EXPECT_TRUE(base::PathExists(net_export_file_path));
 195   EXPECT_EQ(net_export_log_, net_export_file_path);
 196
 197   // GetFilePath should return false if NetExportLogExists() fails.
 198   net_log_temp_file_->set_lie_about_file_existence(true);
 199   EXPECT_FALSE(net_log_temp_file_->GetFilePath(&net_export_file_path));
 200 }
 201
 202 TEST_F(NetLogTempFileTest, ProcessCommandDoStartAndStop) {
 203   net_log_temp_file_->ProcessCommand(NetLogTempFile::DO_START);
 204   VerifyFileAndStateAfterDoStart();
 205
 206   // Calling DO_START second time should be a no-op.
 207   net_log_temp_file_->ProcessCommand(NetLogTempFile::DO_START);
 208   VerifyFileAndStateAfterDoStart();
 209
 210   net_log_temp_file_->ProcessCommand(NetLogTempFile::DO_STOP);
 211   VerifyFileAndStateAfterDoStop();
 212
 213   // Calling DO_STOP second time should be a no-op.
 214   net_log_temp_file_->ProcessCommand(NetLogTempFile::DO_STOP);
 215   VerifyFileAndStateAfterDoStop();
 216 }
 217
 218 TEST_F(NetLogTempFileTest, DoStartClearsFile) {
 219   // Verify file sizes after two consecutives start/stop are the same (even if
 220   // we add some junk data in between).
 221   net_log_temp_file_->ProcessCommand(NetLogTempFile::DO_START);
 222   VerifyFileAndStateAfterDoStart();
 223
 224   int64 start_file_size;
 225   EXPECT_TRUE(file_util::GetFileSize(net_export_log_, &start_file_size));
 226
 227   net_log_temp_file_->ProcessCommand(NetLogTempFile::DO_STOP);
 228   VerifyFileAndStateAfterDoStop();
 229
 230   int64 stop_file_size;
 231   EXPECT_TRUE(file_util::GetFileSize(net_export_log_, &stop_file_size));
 232   EXPECT_GE(stop_file_size, start_file_size);
 233
 234   // Add some junk at the end of the file.
 235   std::string junk_data("Hello");
 236   EXPECT_GT(file_util::AppendToFile(
 237       net_export_log_, junk_data.c_str(), junk_data.size()), 0);
 238
 239   int64 junk_file_size;
 240   EXPECT_TRUE(file_util::GetFileSize(net_export_log_, &junk_file_size));
 241   EXPECT_GT(junk_file_size, stop_file_size);
 242
 243   // Execute DO_START/DO_STOP commands and make sure the file is back to the
 244   // size before addition of junk data.
 245   net_log_temp_file_->ProcessCommand(NetLogTempFile::DO_START);
 246   VerifyFileAndStateAfterDoStart();
 247
 248   int64 new_start_file_size;
 249   EXPECT_TRUE(file_util::GetFileSize(net_export_log_, &new_start_file_size));
 250   EXPECT_EQ(new_start_file_size, start_file_size);
 251
 252   net_log_temp_file_->ProcessCommand(NetLogTempFile::DO_STOP);
 253   VerifyFileAndStateAfterDoStop();
 254
 255   int64 new_stop_file_size;
 256   EXPECT_TRUE(file_util::GetFileSize(net_export_log_, &new_stop_file_size));
 257   EXPECT_EQ(new_stop_file_size, stop_file_size);
 258 }
 259
 260 TEST_F(NetLogTempFileTest, CheckAddEvent) {
 261   // Add an event to |net_log_| and then test to make sure that, after we stop
 262   // logging, the file is larger than the file created without that event.
 263   net_log_temp_file_->ProcessCommand(NetLogTempFile::DO_START);
 264   VerifyFileAndStateAfterDoStart();
 265
 266   // Get file size without the event.
 267   net_log_temp_file_->ProcessCommand(NetLogTempFile::DO_STOP);
 268   VerifyFileAndStateAfterDoStop();
 269
 270   int64 stop_file_size;
 271   EXPECT_TRUE(file_util::GetFileSize(net_export_log_, &stop_file_size));
 272
 273   // Perform DO_START and add an Event and then DO_STOP and then compare
 274   // file sizes.
 275   net_log_temp_file_->ProcessCommand(NetLogTempFile::DO_START);
 276   VerifyFileAndStateAfterDoStart();
 277
 278   // Log an event.
 279   net_log_->AddGlobalEntry(net::NetLog::TYPE_CANCELLED);
 280
 281   net_log_temp_file_->ProcessCommand(NetLogTempFile::DO_STOP);
 282   VerifyFileAndStateAfterDoStop();
 283
 284   int64 new_stop_file_size;
 285   EXPECT_TRUE(file_util::GetFileSize(net_export_log_, &new_stop_file_size));
 286   EXPECT_GE(new_stop_file_size, stop_file_size);
 287 }