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// Copyright (c) 2011 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.
// Test of classes in the tracked_objects.h classes.
#include "base/tracked_objects.h"
#include "base/message_loop.h"
#include "base/time.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace tracked_objects {
class TrackedObjectsTest : public testing::Test {
public:
MessageLoop message_loop_;
};
TEST_F(TrackedObjectsTest, MinimalStartupShutdown) {
// Minimal test doesn't even create any tasks.
if (!ThreadData::StartTracking(true))
return;
EXPECT_FALSE(ThreadData::first()); // No activity even on this thread.
ThreadData* data = ThreadData::current();
EXPECT_TRUE(ThreadData::first()); // Now class was constructed.
EXPECT_TRUE(data);
EXPECT_TRUE(!data->next());
EXPECT_EQ(data, ThreadData::current());
ThreadData::BirthMap birth_map;
data->SnapshotBirthMap(&birth_map);
EXPECT_EQ(0u, birth_map.size());
ThreadData::DeathMap death_map;
data->SnapshotDeathMap(&death_map);
EXPECT_EQ(0u, death_map.size());
ThreadData::ShutdownSingleThreadedCleanup();
// Do it again, just to be sure we reset state completely.
ThreadData::StartTracking(true);
EXPECT_FALSE(ThreadData::first()); // No activity even on this thread.
data = ThreadData::current();
EXPECT_TRUE(ThreadData::first()); // Now class was constructed.
EXPECT_TRUE(data);
EXPECT_TRUE(!data->next());
EXPECT_EQ(data, ThreadData::current());
birth_map.clear();
data->SnapshotBirthMap(&birth_map);
EXPECT_EQ(0u, birth_map.size());
death_map.clear();
data->SnapshotDeathMap(&death_map);
EXPECT_EQ(0u, death_map.size());
ThreadData::ShutdownSingleThreadedCleanup();
}
TEST_F(TrackedObjectsTest, TinyStartupShutdown) {
if (!ThreadData::StartTracking(true))
return;
// Instigate tracking on a single tracked object, or our thread.
const Location& location = FROM_HERE;
ThreadData::TallyABirthIfActive(location);
const ThreadData* data = ThreadData::first();
ASSERT_TRUE(data);
EXPECT_TRUE(!data->next());
EXPECT_EQ(data, ThreadData::current());
ThreadData::BirthMap birth_map;
data->SnapshotBirthMap(&birth_map);
EXPECT_EQ(1u, birth_map.size()); // 1 birth location.
EXPECT_EQ(1, birth_map.begin()->second->birth_count()); // 1 birth.
ThreadData::DeathMap death_map;
data->SnapshotDeathMap(&death_map);
EXPECT_EQ(0u, death_map.size()); // No deaths.
// Now instigate a birth, and a death.
const Births* second_birth = ThreadData::TallyABirthIfActive(location);
ThreadData::TallyADeathIfActive(
second_birth,
base::TimeDelta::FromSeconds(1) /* Bogus duration. */);
birth_map.clear();
data->SnapshotBirthMap(&birth_map);
EXPECT_EQ(1u, birth_map.size()); // 1 birth location.
EXPECT_EQ(2, birth_map.begin()->second->birth_count()); // 2 births.
death_map.clear();
data->SnapshotDeathMap(&death_map);
EXPECT_EQ(1u, death_map.size()); // 1 location.
EXPECT_EQ(1, death_map.begin()->second.count()); // 1 death.
// The births were at the same location as the one known death.
EXPECT_EQ(birth_map.begin()->second, death_map.begin()->first);
ThreadData::ShutdownSingleThreadedCleanup();
}
} // namespace tracked_objects
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