[Offline Pages] Add expiration in internal log.

components/offline_pages/offline_page_model_event_logger_unittest.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/offline_pages/offline_page_model_event_logger.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace offline_pages {
 
 namespace {
 
 const char kNamespace[] = "last_n";
 const char kUrl[] = "http://www.wikipedia.org";
 const char kOfflineId[] = "foobar";
 const int kTimeLength = 21;
 const char kPageSaved[] =
     "http://www.wikipedia.org is saved at last_n with id foobar";
 const char kPageDeleted[] = "Page with ID foobar has been deleted";
+const char kPageExpired[] = "Page with ID foobar has been expired";
 const char kRecordStoreClearError[] = "Offline store clear failed";
 const char kRecordStoreCleared[] = "Offline store cleared";
 const char kRecordStoreReloadError[] =
     "There was an error reloading the offline store";
 
 }  // namespace
 
 TEST(OfflinePageModelEventLoggerTest, RecordsWhenLoggingIsOn) {
   OfflinePageModelEventLogger logger;
   std::vector<std::string> log;
 
   logger.SetIsLogging(true);
   logger.RecordStoreCleared();
   logger.RecordPageSaved(kNamespace, kUrl, kOfflineId);
   logger.RecordPageDeleted(kOfflineId);
+  logger.RecordPageExpired(kOfflineId);
   logger.RecordStoreClearError();
   logger.RecordStoreReloadError();
   logger.GetLogs(&log);
 
-  EXPECT_EQ(5u, log.size());
-  EXPECT_EQ(std::string(kRecordStoreCleared), log[4].substr(kTimeLength));
-  EXPECT_EQ(std::string(kPageSaved), log[3].substr(kTimeLength));
-  EXPECT_EQ(std::string(kPageDeleted), log[2].substr(kTimeLength));
+  EXPECT_EQ(6u, log.size());
+  EXPECT_EQ(std::string(kRecordStoreCleared), log[5].substr(kTimeLength));
+  EXPECT_EQ(std::string(kPageSaved), log[4].substr(kTimeLength));
+  EXPECT_EQ(std::string(kPageDeleted), log[3].substr(kTimeLength));
+  EXPECT_EQ(std::string(kPageExpired), log[2].substr(kTimeLength));
   EXPECT_EQ(std::string(kRecordStoreClearError), log[1].substr(kTimeLength));
   EXPECT_EQ(std::string(kRecordStoreReloadError), log[0].substr(kTimeLength));
 }
 
 TEST(OfflinePageModelEventLoggerTest, DoesNotRecordWhenLoggingIsOff) {
   OfflinePageModelEventLogger logger;
   std::vector<std::string> log;
 
   logger.SetIsLogging(false);
   logger.RecordStoreCleared();
   logger.RecordPageSaved(kNamespace, kUrl, kOfflineId);
   logger.RecordPageDeleted(kOfflineId);
+  logger.RecordPageExpired(kOfflineId);
   logger.RecordStoreClearError();
   logger.RecordStoreReloadError();
   logger.GetLogs(&log);
 
   EXPECT_EQ(0u, log.size());
 }
 
 TEST(OfflinePageModelEventLoggerTest, DoesNotExceedMaxSize) {
   OfflinePageModelEventLogger logger;
   std::vector<std::string> log;
 
   logger.SetIsLogging(true);
   for (size_t i = 0; i < kMaxLogCount + 1; ++i) {
     logger.RecordStoreCleared();
   }
   logger.GetLogs(&log);
 
   EXPECT_EQ(kMaxLogCount, log.size());
 }
 
 }  // namespace offline_internals