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// Copyright (c) 2012 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/net/dns_probe_job.h"
#include "base/basictypes.h"
#include "base/message_loop.h"
#include "base/run_loop.h"
#include "net/base/net_log.h"
#include "net/dns/dns_client.h"
#include "net/dns/dns_config_service.h"
#include "net/dns/dns_protocol.h"
#include "net/dns/dns_test_util.h"
#include "testing/gtest/include/gtest/gtest.h"
using net::DnsClient;
using net::DnsConfig;
using net::IPAddressNumber;
using net::IPEndPoint;
using net::ParseIPLiteralToNumber;
using net::MockDnsClientRule;
using net::MockDnsClientRuleList;
using net::NetLog;
namespace chrome_browser_net {
namespace {
class DnsProbeJobTest : public testing::Test {
public:
void RunProbe(MockDnsClientRule::Result expected_good_result,
MockDnsClientRule::Result expected_bad_result);
protected:
void OnProbeFinished(DnsProbeJob* job, DnsProbeJob::Result result);
bool callback_called_;
DnsProbeJob::Result callback_result_;
};
// Runs a probe and waits for the callback. |good_result| and |bad_result|
// are the result of the good and bad transactions that the DnsProbeJob will
// receive.
void DnsProbeJobTest::RunProbe(MockDnsClientRule::Result good_result,
MockDnsClientRule::Result bad_result) {
DnsConfig config;
config.nameservers.clear();
IPAddressNumber dns_ip;
ParseIPLiteralToNumber("192.168.1.1", &dns_ip);
const uint16 kDnsPort = net::dns_protocol::kDefaultPort;
config.nameservers.push_back(IPEndPoint(dns_ip, kDnsPort));
const uint16 kTypeA = net::dns_protocol::kTypeA;
MockDnsClientRuleList rules;
rules.push_back(MockDnsClientRule("google.com", kTypeA, good_result));
rules.push_back(MockDnsClientRule(std::string(), kTypeA, bad_result));
scoped_ptr<DnsClient> dns_client = CreateMockDnsClient(config, rules);
dns_client->SetConfig(config);
NetLog* net_log = NULL;
DnsProbeJob::CallbackType callback = base::Bind(
&DnsProbeJobTest::OnProbeFinished,
base::Unretained(this));
// Need to set these before creating job, because it can call the callback
// synchronously in the constructor if both transactions fail to start.
callback_called_ = false;
callback_result_ = DnsProbeJob::SERVERS_UNKNOWN;
// DnsProbeJob needs somewhere to post the callback.
scoped_ptr<base::MessageLoop> message_loop_(new base::MessageLoopForIO());
scoped_ptr<DnsProbeJob> job(
DnsProbeJob::CreateJob(dns_client.Pass(), callback, net_log));
// Force callback to run.
base::RunLoop run_loop;
run_loop.RunUntilIdle();
}
void DnsProbeJobTest::OnProbeFinished(DnsProbeJob* job,
DnsProbeJob::Result result) {
EXPECT_FALSE(callback_called_);
callback_called_ = true;
callback_result_ = result;
}
struct TestCase {
MockDnsClientRule::Result good_result;
MockDnsClientRule::Result bad_result;
DnsProbeJob::Result expected_probe_result;
};
TEST_F(DnsProbeJobTest, Test) {
static const TestCase kTestCases[] = {
{ MockDnsClientRule::OK,
MockDnsClientRule::EMPTY,
DnsProbeJob::SERVERS_CORRECT },
{ MockDnsClientRule::EMPTY,
MockDnsClientRule::EMPTY,
DnsProbeJob::SERVERS_INCORRECT },
// TODO(ttuttle): Test that triggers QUERY_DNS_ERROR.
// (Need to add another mock behavior to MockDnsClient.)
{ MockDnsClientRule::FAIL_ASYNC,
MockDnsClientRule::FAIL_ASYNC,
DnsProbeJob::SERVERS_FAILING },
{ MockDnsClientRule::FAIL_SYNC,
MockDnsClientRule::FAIL_SYNC,
DnsProbeJob::SERVERS_FAILING },
{ MockDnsClientRule::TIMEOUT,
MockDnsClientRule::TIMEOUT,
DnsProbeJob::SERVERS_UNREACHABLE },
};
for (size_t i = 0; i < arraysize(kTestCases); i++) {
const TestCase* test_case = &kTestCases[i];
RunProbe(test_case->good_result, test_case->bad_result);
EXPECT_TRUE(callback_called_);
EXPECT_EQ(test_case->expected_probe_result, callback_result_);
}
}
} // namespace
} // namespace chrome_browser_net
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