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// Copyright (c) 2014 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 "net/base/network_activity_monitor.h"
#include <stdint.h>
#include <vector>
#include "base/bind.h"
#include "base/stl_util.h"
#include "base/strings/string_number_conversions.h"
#include "base/synchronization/lock.h"
#include "base/threading/thread.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace net {
namespace test {
class NetworkActivityMonitorPeer {
public:
static void ResetMonitor() {
NetworkActivityMonitor* monitor = NetworkActivityMonitor::GetInstance();
base::AutoLock lock(monitor->lock_);
monitor->bytes_sent_ = 0;
monitor->bytes_received_ = 0;
monitor->last_received_ticks_ = base::TimeTicks();
monitor->last_sent_ticks_ = base::TimeTicks();
}
};
class NetworkActivityMontiorTest : public testing::Test {
public:
NetworkActivityMontiorTest() {
NetworkActivityMonitorPeer::ResetMonitor();
}
};
TEST_F(NetworkActivityMontiorTest, GetInstance) {
NetworkActivityMonitor* monitor = NetworkActivityMonitor::GetInstance();
EXPECT_TRUE(monitor != NULL);
EXPECT_TRUE(monitor == NetworkActivityMonitor::GetInstance());
}
TEST_F(NetworkActivityMontiorTest, BytesReceived) {
NetworkActivityMonitor* monitor = NetworkActivityMonitor::GetInstance();
EXPECT_EQ(0u, monitor->GetBytesReceived());
base::TimeTicks start = base::TimeTicks::Now();
uint64_t bytes = 12345;
monitor->IncrementBytesReceived(bytes);
EXPECT_EQ(bytes, monitor->GetBytesReceived());
base::TimeDelta delta = monitor->GetTimeSinceLastReceived();
EXPECT_LE(base::TimeDelta(), delta);
EXPECT_GE(base::TimeTicks::Now() - start, delta);
}
TEST_F(NetworkActivityMontiorTest, BytesSent) {
NetworkActivityMonitor* monitor = NetworkActivityMonitor::GetInstance();
EXPECT_EQ(0u, monitor->GetBytesSent());
base::TimeTicks start = base::TimeTicks::Now();
uint64_t bytes = 12345;
monitor->IncrementBytesSent(bytes);
EXPECT_EQ(bytes, monitor->GetBytesSent());
base::TimeDelta delta = monitor->GetTimeSinceLastSent();
EXPECT_LE(base::TimeDelta(), delta);
EXPECT_GE(base::TimeTicks::Now() - start, delta);
}
namespace {
void VerifyBytesReceivedIsMultipleOf(uint64_t bytes) {
EXPECT_EQ(0u,
NetworkActivityMonitor::GetInstance()->GetBytesReceived() % bytes);
}
void VerifyBytesSentIsMultipleOf(uint64_t bytes) {
EXPECT_EQ(0u, NetworkActivityMonitor::GetInstance()->GetBytesSent() % bytes);
}
void IncrementBytesReceived(uint64_t bytes) {
NetworkActivityMonitor::GetInstance()->IncrementBytesReceived(bytes);
}
void IncrementBytesSent(uint64_t bytes) {
NetworkActivityMonitor::GetInstance()->IncrementBytesSent(bytes);
}
} // namespace
TEST_F(NetworkActivityMontiorTest, Threading) {
std::vector<base::Thread*> threads;
for (size_t i = 0; i < 3; ++i) {
threads.push_back(new base::Thread(base::SizeTToString(i)));
ASSERT_TRUE(threads.back()->Start());
}
size_t num_increments = 157;
uint64_t bytes_received = UINT64_C(7294954321);
uint64_t bytes_sent = UINT64_C(91294998765);
for (size_t i = 0; i < num_increments; ++i) {
size_t thread_num = i % threads.size();
threads[thread_num]->task_runner()->PostTask(
FROM_HERE,
base::Bind(&IncrementBytesReceived, bytes_received));
threads[thread_num]->task_runner()->PostTask(
FROM_HERE,
base::Bind(&IncrementBytesSent, bytes_sent));
threads[thread_num]->task_runner()->PostTask(
FROM_HERE,
base::Bind(&VerifyBytesSentIsMultipleOf, bytes_sent));
threads[thread_num]->task_runner()->PostTask(
FROM_HERE,
base::Bind(&VerifyBytesReceivedIsMultipleOf, bytes_received));
}
STLDeleteElements(&threads);
NetworkActivityMonitor* monitor = NetworkActivityMonitor::GetInstance();
EXPECT_EQ(num_increments * bytes_received, monitor->GetBytesReceived());
EXPECT_EQ(num_increments * bytes_sent, monitor->GetBytesSent());
}
} // namespace test
} // namespace net
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