Adding in memory log of history visit database. This...

chrome/browser/history/visit_log_unittest.cc

+// Copyright (c) 2009 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 "chrome/browser/history/visit_log.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+// A simple test that makes sure events are recorded correctly in circular
+// buffer.
+TEST(VisitLog, SimpleRecording) {
+  history::VisitLog vlog;
+
+  unsigned char* vlog_buffer = vlog.events();
+  int vlog_buffer_size = vlog.events_buffer_size();
+
+  ASSERT_EQ(history::VisitLog::NO_OP, vlog_buffer[0]);
+  ASSERT_EQ(history::VisitLog::NO_OP, vlog_buffer[1]);
+  ASSERT_EQ(history::VisitLog::NO_OP, vlog_buffer[2]);
+  ASSERT_EQ(history::VisitLog::NO_OP, vlog_buffer[vlog_buffer_size-1]);
+
+  for (int i=0; i<vlog_buffer_size; i++)
+    vlog.AddEvent(history::VisitLog::ADD_VISIT);
+
+  ASSERT_EQ(history::VisitLog::ADD_VISIT, vlog_buffer[0]);
+  ASSERT_EQ(history::VisitLog::ADD_VISIT, vlog_buffer[1]);
+  ASSERT_EQ(history::VisitLog::ADD_VISIT, vlog_buffer[2]);
+  ASSERT_EQ(history::VisitLog::ADD_VISIT, vlog_buffer[vlog_buffer_size-1]);
+  ASSERT_EQ(vlog_buffer_size, vlog.num_add());
+  ASSERT_EQ(0, vlog.num_delete());
+  ASSERT_EQ(0, vlog.num_update());
+  ASSERT_EQ(0, vlog.num_select());
+
+  vlog.AddEvent(history::VisitLog::DELETE_VISIT);
+  vlog.AddEvent(history::VisitLog::UPDATE_VISIT);
+  vlog.AddEvent(history::VisitLog::SELECT_VISIT);
+
+  ASSERT_EQ(history::VisitLog::DELETE_VISIT, vlog_buffer[0]);
+  ASSERT_EQ(history::VisitLog::UPDATE_VISIT, vlog_buffer[1]);
+  ASSERT_EQ(history::VisitLog::SELECT_VISIT, vlog_buffer[2]);
+  ASSERT_EQ(history::VisitLog::ADD_VISIT, vlog_buffer[vlog_buffer_size-1]);
+  ASSERT_EQ(vlog_buffer_size, vlog.num_add());
+  ASSERT_EQ(1, vlog.num_delete());
+  ASSERT_EQ(1, vlog.num_update());
+  ASSERT_EQ(1, vlog.num_select());
+}