net/dns/async_host_resolver_unittest.cc - Issue 9369045: [net] HostResolverImpl + DnsTransaction + DnsConfigService = Asynchronous DNS ready for experiments.

Unified Diff: net/dns/async_host_resolver_unittest.cc

Issue 9369045: [net] HostResolverImpl + DnsTransaction + DnsConfigService = Asynchronous DNS ready for experiments. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src

Patch Set: Denitted. Created 8 years, 10 months ago

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Index: net/dns/async_host_resolver_unittest.cc

diff --git a/net/dns/async_host_resolver_unittest.cc b/net/dns/async_host_resolver_unittest.cc

deleted file mode 100644

index be57d494bf2ba084529a39cad0abb543bffe4ba7..0000000000000000000000000000000000000000

--- a/net/dns/async_host_resolver_unittest.cc

+++ /dev/null

@@ -1,544 +0,0 @@

-// Use of this source code is governed by a BSD-style license that can be

-// found in the LICENSE file.

-#include "net/dns/async_host_resolver.h"

-#include "base/bind.h"

-#include "base/memory/scoped_ptr.h"

-#include "base/message_loop.h"

-#include "base/stl_util.h"

-#include "net/base/host_cache.h"

-#include "net/base/net_errors.h"

-#include "net/base/net_log.h"

-#include "net/base/sys_addrinfo.h"

-#include "net/base/test_completion_callback.h"

-#include "net/dns/dns_query.h"

-#include "net/dns/dns_response.h"

-#include "net/dns/dns_test_util.h"

-#include "net/dns/dns_transaction.h"

-#include "testing/gtest/include/gtest/gtest.h"

-namespace net {

-namespace {

-const int kPortNum = 80;

-const size_t kMaxTransactions = 2;

-const size_t kMaxPendingRequests = 1;

-void VerifyAddressList(const std::vector<const char*>& ip_addresses,

- int port,

- const AddressList& addrlist) {

- ASSERT_LT(0u, ip_addresses.size());

- ASSERT_NE(static_cast<addrinfo*>(NULL), addrlist.head());

- IPAddressNumber ip_number;

- const struct addrinfo* ainfo = addrlist.head();

- for (std::vector<const char*>::const_iterator i = ip_addresses.begin();

- i != ip_addresses.end(); ++i, ainfo = ainfo->ai_next) {

- ASSERT_NE(static_cast<addrinfo*>(NULL), ainfo);

- EXPECT_EQ(sizeof(struct sockaddr_in),

- static_cast<size_t>(ainfo->ai_addrlen));

- const struct sockaddr* sa = ainfo->ai_addr;

- const struct sockaddr_in* sa_in = (const struct sockaddr_in*) sa;

- EXPECT_TRUE(htons(port) == sa_in->sin_port);

- EXPECT_STREQ(*i, NetAddressToString(sa, ainfo->ai_addrlen).c_str());

- }

- ASSERT_EQ(static_cast<addrinfo*>(NULL), ainfo);

-class MockTransactionFactory : public DnsTransactionFactory,

- public base::SupportsWeakPtr<MockTransactionFactory> {

- public:

- // Using WeakPtr to support cancellation. All MockTransactions succeed unless

- // cancelled or MockTransactionFactory is destroyed.

- class MockTransaction : public DnsTransaction,

- public base::SupportsWeakPtr<MockTransaction> {

- public:

- MockTransaction(const std::string& hostname,

- uint16 qtype,

- const DnsTransactionFactory::CallbackType& callback,

- const base::WeakPtr<MockTransactionFactory>& factory)

- : hostname_(hostname),

- qtype_(qtype),

- callback_(callback),

- started_(false),

- factory_(factory) {

- EXPECT_FALSE(started_);

- started_ = true;

- MessageLoop::current()->PostTask(

- FROM_HERE,

- base::Bind(&MockTransaction::Finish, AsWeakPtr()));

- }

- virtual const std::string& GetHostname() const OVERRIDE {

- return hostname_;

- }

- virtual uint16 GetType() const OVERRIDE {

- return qtype_;

- }

- virtual int Start() OVERRIDE {

- return ERR_IO_PENDING;

- }

- private:

- void Finish() {

- if (!factory_) {

- callback_.Run(this, ERR_DNS_SERVER_FAILED, NULL);

- return;

- }

- callback_.Run(this,

- OK,

- factory_->responses_[Key(GetHostname(), GetType())]);

- }

- const std::string hostname_;

- const uint16 qtype_;

- DnsTransactionFactory::CallbackType callback_;

- bool started_;

- const base::WeakPtr<MockTransactionFactory> factory_;

- };

- typedef std::pair<std::string, uint16> Key;

- MockTransactionFactory() : num_requests_(0) {}

- ~MockTransactionFactory() {

- STLDeleteValues(&responses_);

- }

- scoped_ptr<DnsTransaction> CreateTransaction(

- const std::string& qname,

- uint16 qtype,

- const DnsTransactionFactory::CallbackType& callback,

- const BoundNetLog&) {

- ++num_requests_;

- return scoped_ptr<DnsTransaction>(

- new MockTransaction(qname, qtype, callback, AsWeakPtr()));

- }

- void AddResponse(const std::string& name, uint8 type, DnsResponse* response) {

- responses_[MockTransactionFactory::Key(name, type)] = response;

- }

- int num_requests() const { return num_requests_; }

- private:

- int num_requests_;

- std::map<Key, DnsResponse*> responses_;

-};

-} // namespace

-// The following fixture sets up an environment for four different lookups

-// with their data defined in dns_test_util.h. All tests make use of these

-// predefined variables instead of each defining their own, to avoid

-// boilerplate code in every test. Assuming every coming query is for a

-// distinct hostname, as |kMaxTransactions| is set to 2 and

-// |kMaxPendingRequests| is set to 1, first two queries start immediately

-// and the next one is sent to pending queue; as a result, the next query

-// should either fail itself or cause the pending query to fail depending

-// on its priority.

-class AsyncHostResolverTest : public testing::Test {

- public:

- AsyncHostResolverTest()

- : info0_(HostPortPair(kT0HostName, kPortNum)),

- info1_(HostPortPair(kT1HostName, kPortNum)),

- info2_(HostPortPair(kT2HostName, kPortNum)),

- info3_(HostPortPair(kT3HostName, kPortNum)),

- ip_addresses0_(kT0IpAddresses,

- kT0IpAddresses + arraysize(kT0IpAddresses)),

- ip_addresses1_(kT1IpAddresses,

- kT1IpAddresses + arraysize(kT1IpAddresses)),

- ip_addresses2_(kT2IpAddresses,

- kT2IpAddresses + arraysize(kT2IpAddresses)),

- ip_addresses3_(kT3IpAddresses,

- kT3IpAddresses + arraysize(kT3IpAddresses)) {

- // AF_INET only for now.

- info0_.set_address_family(ADDRESS_FAMILY_IPV4);

- info1_.set_address_family(ADDRESS_FAMILY_IPV4);

- info2_.set_address_family(ADDRESS_FAMILY_IPV4);

- info3_.set_address_family(ADDRESS_FAMILY_IPV4);

- client_ = new MockTransactionFactory();

- client_->AddResponse(kT0HostName, kT0Qtype,

- new DnsResponse(reinterpret_cast<const char*>(kT0ResponseDatagram),

- arraysize(kT0ResponseDatagram),

- arraysize(kT0QueryDatagram)));

- client_->AddResponse(kT1HostName, kT1Qtype,

- new DnsResponse(reinterpret_cast<const char*>(kT1ResponseDatagram),

- arraysize(kT1ResponseDatagram),

- arraysize(kT1QueryDatagram)));

- client_->AddResponse(kT2HostName, kT2Qtype,

- new DnsResponse(reinterpret_cast<const char*>(kT2ResponseDatagram),

- arraysize(kT2ResponseDatagram),

- arraysize(kT2QueryDatagram)));

- client_->AddResponse(kT3HostName, kT3Qtype,

- new DnsResponse(reinterpret_cast<const char*>(kT3ResponseDatagram),

- arraysize(kT3ResponseDatagram),

- arraysize(kT3QueryDatagram)));

- resolver_.reset(

- new AsyncHostResolver(kMaxTransactions, kMaxPendingRequests,

- HostCache::CreateDefaultCache(),

- scoped_ptr<DnsTransactionFactory>(client_), NULL));

- }

- protected:

- AddressList addrlist0_, addrlist1_, addrlist2_, addrlist3_;

- HostResolver::RequestInfo info0_, info1_, info2_, info3_;

- std::vector<const char*> ip_addresses0_, ip_addresses1_,

- ip_addresses2_, ip_addresses3_;

- scoped_ptr<HostResolver> resolver_;

- MockTransactionFactory* client_; // Owned by the AsyncHostResolver.

- TestCompletionCallback callback0_, callback1_, callback2_, callback3_;

-};

-TEST_F(AsyncHostResolverTest, EmptyHostLookup) {

- info0_.set_host_port_pair(HostPortPair("", kPortNum));

- int rv = resolver_->Resolve(info0_, &addrlist0_, callback0_.callback(), NULL,

- BoundNetLog());

- EXPECT_EQ(ERR_NAME_NOT_RESOLVED, rv);

-TEST_F(AsyncHostResolverTest, IPv4LiteralLookup) {

- const char* kIPLiteral = "192.168.1.2";

- info0_.set_host_port_pair(HostPortPair(kIPLiteral, kPortNum));

- info0_.set_host_resolver_flags(HOST_RESOLVER_CANONNAME);

- int rv = resolver_->Resolve(info0_, &addrlist0_, callback0_.callback(), NULL,

- BoundNetLog());

- EXPECT_EQ(OK, rv);

- std::vector<const char*> ip_addresses(1, kIPLiteral);

- VerifyAddressList(ip_addresses, kPortNum, addrlist0_);

- EXPECT_STREQ(kIPLiteral, addrlist0_.head()->ai_canonname);

-TEST_F(AsyncHostResolverTest, IPv6LiteralLookup) {

- info0_.set_host_port_pair(HostPortPair("2001:db8:0::42", kPortNum));

- int rv = resolver_->Resolve(info0_, &addrlist0_, callback0_.callback(), NULL,

- BoundNetLog());

- // When support for IPv6 is added, this should succeed.

- EXPECT_EQ(ERR_NAME_NOT_RESOLVED, rv);

-TEST_F(AsyncHostResolverTest, CachedLookup) {

- int rv = resolver_->ResolveFromCache(info0_, &addrlist0_, BoundNetLog());

- EXPECT_EQ(ERR_DNS_CACHE_MISS, rv);

- // Cache the result of |info0_| lookup.

- rv = resolver_->Resolve(info0_, &addrlist0_, callback0_.callback(), NULL,

- BoundNetLog());

- EXPECT_EQ(ERR_IO_PENDING, rv);

- rv = callback0_.WaitForResult();

- EXPECT_EQ(OK, rv);

- VerifyAddressList(ip_addresses0_, kPortNum, addrlist0_);

- // Now lookup |info0_| from cache only, store results in |addrlist1_|,

- // should succeed synchronously.

- rv = resolver_->ResolveFromCache(info0_, &addrlist1_, BoundNetLog());

- EXPECT_EQ(OK, rv);

- VerifyAddressList(ip_addresses0_, kPortNum, addrlist1_);

-// TODO(szym): This tests DnsTransaction not AsyncHostResolver. Remove or move

-// to dns_transaction_unittest.cc

-TEST_F(AsyncHostResolverTest, DISABLED_InvalidHostNameLookup) {

- const std::string kHostName1(64, 'a');

- info0_.set_host_port_pair(HostPortPair(kHostName1, kPortNum));

- int rv = resolver_->Resolve(info0_, &addrlist0_, callback0_.callback(), NULL,

- BoundNetLog());

- EXPECT_EQ(ERR_INVALID_ARGUMENT, rv);

- const std::string kHostName2(4097, 'b');

- info0_.set_host_port_pair(HostPortPair(kHostName2, kPortNum));

- rv = resolver_->Resolve(info0_, &addrlist0_, callback0_.callback(), NULL,

- BoundNetLog());

- EXPECT_EQ(ERR_INVALID_ARGUMENT, rv);

-TEST_F(AsyncHostResolverTest, Lookup) {

- int rv = resolver_->Resolve(info0_, &addrlist0_, callback0_.callback(), NULL,

- BoundNetLog());

- EXPECT_EQ(ERR_IO_PENDING, rv);

- rv = callback0_.WaitForResult();

- EXPECT_EQ(OK, rv);

- VerifyAddressList(ip_addresses0_, kPortNum, addrlist0_);

-TEST_F(AsyncHostResolverTest, ConcurrentLookup) {

- int rv0 = resolver_->Resolve(info0_, &addrlist0_, callback0_.callback(), NULL,

- BoundNetLog());

- int rv1 = resolver_->Resolve(info1_, &addrlist1_, callback1_.callback(), NULL,

- BoundNetLog());

- int rv2 = resolver_->Resolve(info2_, &addrlist2_, callback2_.callback(), NULL,

- BoundNetLog());

- EXPECT_EQ(ERR_IO_PENDING, rv0);

- EXPECT_EQ(ERR_IO_PENDING, rv1);

- EXPECT_EQ(ERR_IO_PENDING, rv2);

- rv0 = callback0_.WaitForResult();

- EXPECT_EQ(OK, rv0);

- VerifyAddressList(ip_addresses0_, kPortNum, addrlist0_);

- rv1 = callback1_.WaitForResult();

- EXPECT_EQ(OK, rv1);

- VerifyAddressList(ip_addresses1_, kPortNum, addrlist1_);

- rv2 = callback2_.WaitForResult();

- EXPECT_EQ(OK, rv2);

- VerifyAddressList(ip_addresses2_, kPortNum, addrlist2_);

- EXPECT_EQ(3, client_->num_requests());

-TEST_F(AsyncHostResolverTest, SameHostLookupsConsumeSingleTransaction) {

- // We pass the info0_ to all requests.

- int rv0 = resolver_->Resolve(info0_, &addrlist0_, callback0_.callback(), NULL,

- BoundNetLog());

- int rv1 = resolver_->Resolve(info0_, &addrlist1_, callback1_.callback(), NULL,

- BoundNetLog());

- int rv2 = resolver_->Resolve(info0_, &addrlist2_, callback2_.callback(), NULL,

- BoundNetLog());

- EXPECT_EQ(ERR_IO_PENDING, rv0);

- EXPECT_EQ(ERR_IO_PENDING, rv1);

- EXPECT_EQ(ERR_IO_PENDING, rv2);

- rv0 = callback0_.WaitForResult();

- EXPECT_EQ(OK, rv0);

- VerifyAddressList(ip_addresses0_, kPortNum, addrlist0_);

- rv1 = callback1_.WaitForResult();

- EXPECT_EQ(OK, rv1);

- VerifyAddressList(ip_addresses0_, kPortNum, addrlist1_);

- rv2 = callback2_.WaitForResult();

- EXPECT_EQ(OK, rv2);

- VerifyAddressList(ip_addresses0_, kPortNum, addrlist2_);

- // Although we have three lookups, a single UDP socket was used.

- EXPECT_EQ(1, client_->num_requests());

-TEST_F(AsyncHostResolverTest, CancelLookup) {

- HostResolver::RequestHandle req0 = NULL, req2 = NULL;

- int rv0 = resolver_->Resolve(info0_, &addrlist0_, callback0_.callback(),

- &req0, BoundNetLog());

- int rv1 = resolver_->Resolve(info1_, &addrlist1_, callback1_.callback(), NULL,

- BoundNetLog());

- int rv2 = resolver_->Resolve(info2_, &addrlist2_, callback2_.callback(),

- &req2, BoundNetLog());

- EXPECT_EQ(ERR_IO_PENDING, rv0);

- EXPECT_EQ(ERR_IO_PENDING, rv1);

- EXPECT_EQ(ERR_IO_PENDING, rv2);

- resolver_->CancelRequest(req0);

- resolver_->CancelRequest(req2);

- MessageLoop::current()->RunAllPending();

- EXPECT_FALSE(callback0_.have_result());

- EXPECT_FALSE(callback2_.have_result());

- rv1 = callback1_.WaitForResult();

- EXPECT_EQ(OK, rv1);

- VerifyAddressList(ip_addresses1_, kPortNum, addrlist1_);

-// Tests the following scenario: start two resolutions for the same host,

-// cancel one of them, make sure that the other one completes.

-TEST_F(AsyncHostResolverTest, CancelSameHostLookup) {

- HostResolver::RequestHandle req0 = NULL;

- // Pass the info0_ to both requests.

- int rv0 = resolver_->Resolve(info0_, &addrlist0_, callback0_.callback(),

- &req0, BoundNetLog());

- int rv1 = resolver_->Resolve(info0_, &addrlist1_, callback1_.callback(), NULL,

- BoundNetLog());

- EXPECT_EQ(ERR_IO_PENDING, rv0);

- EXPECT_EQ(ERR_IO_PENDING, rv1);

- resolver_->CancelRequest(req0);

- MessageLoop::current()->RunAllPending();

- EXPECT_FALSE(callback0_.have_result());

- rv1 = callback1_.WaitForResult();

- EXPECT_EQ(OK, rv1);

- VerifyAddressList(ip_addresses0_, kPortNum, addrlist1_);

- EXPECT_EQ(1, client_->num_requests());

-// Test that a queued lookup completes.

-TEST_F(AsyncHostResolverTest, QueuedLookup) {

- // kMaxTransactions is 2, thus the following requests consume all

- // available transactions.

- int rv0 = resolver_->Resolve(info0_, &addrlist0_, callback0_.callback(), NULL,

- BoundNetLog());

- int rv1 = resolver_->Resolve(info1_, &addrlist1_, callback1_.callback(), NULL,

- BoundNetLog());

- EXPECT_EQ(ERR_IO_PENDING, rv0);

- EXPECT_EQ(ERR_IO_PENDING, rv1);

- // The following request will end up in queue.

- int rv2 = resolver_->Resolve(info2_, &addrlist2_, callback2_.callback(), NULL,

- BoundNetLog());

- EXPECT_EQ(ERR_IO_PENDING, rv2);

- EXPECT_EQ(1u,

- static_cast<AsyncHostResolver*>(resolver_.get())->GetNumPending());

- // Make sure all requests complete.

- rv0 = callback0_.WaitForResult();

- EXPECT_EQ(OK, rv0);

- VerifyAddressList(ip_addresses0_, kPortNum, addrlist0_);

- rv1 = callback1_.WaitForResult();

- EXPECT_EQ(OK, rv1);

- VerifyAddressList(ip_addresses1_, kPortNum, addrlist1_);

- rv2 = callback2_.WaitForResult();

- EXPECT_EQ(OK, rv2);

- VerifyAddressList(ip_addresses2_, kPortNum, addrlist2_);

-// Test that cancelling a queued lookup works.

-TEST_F(AsyncHostResolverTest, CancelPendingLookup) {

- // kMaxTransactions is 2, thus the following requests consume all

- // available transactions.

- int rv0 = resolver_->Resolve(info0_, &addrlist0_, callback0_.callback(), NULL,

- BoundNetLog());

- int rv1 = resolver_->Resolve(info1_, &addrlist1_, callback1_.callback(), NULL,

- BoundNetLog());

- EXPECT_EQ(ERR_IO_PENDING, rv0);

- EXPECT_EQ(ERR_IO_PENDING, rv1);

- // The following request will end up in queue.

- HostResolver::RequestHandle req2 = NULL;

- int rv2 = resolver_->Resolve(info2_, &addrlist2_, callback2_.callback(),

- &req2, BoundNetLog());

- EXPECT_EQ(ERR_IO_PENDING, rv2);

- EXPECT_EQ(1u,

- static_cast<AsyncHostResolver*>(resolver_.get())->GetNumPending());

- resolver_->CancelRequest(req2);

- // Make sure first two requests complete while the cancelled one doesn't.

- MessageLoop::current()->RunAllPending();

- EXPECT_FALSE(callback2_.have_result());

- rv0 = callback0_.WaitForResult();

- EXPECT_EQ(OK, rv0);

- VerifyAddressList(ip_addresses0_, kPortNum, addrlist0_);

- rv1 = callback1_.WaitForResult();

- EXPECT_EQ(OK, rv1);

- VerifyAddressList(ip_addresses1_, kPortNum, addrlist1_);

-TEST_F(AsyncHostResolverTest, ResolverDestructionCancelsLookups) {

- int rv0 = resolver_->Resolve(info0_, &addrlist0_, callback0_.callback(), NULL,

- BoundNetLog());

- int rv1 = resolver_->Resolve(info1_, &addrlist1_, callback1_.callback(), NULL,

- BoundNetLog());

- // This one is queued.

- int rv2 = resolver_->Resolve(info2_, &addrlist2_, callback2_.callback(), NULL,

- BoundNetLog());

- EXPECT_EQ(1u,

- static_cast<AsyncHostResolver*>(resolver_.get())->GetNumPending());

- EXPECT_EQ(ERR_IO_PENDING, rv0);

- EXPECT_EQ(ERR_IO_PENDING, rv1);

- EXPECT_EQ(ERR_IO_PENDING, rv2);

- resolver_.reset();

- MessageLoop::current()->RunAllPending();

- EXPECT_FALSE(callback0_.have_result());

- EXPECT_FALSE(callback1_.have_result());

- EXPECT_FALSE(callback2_.have_result());

-// Test that when the number of pending lookups is at max, a new lookup

-// with a priority lower than all of those in the queue fails.

-TEST_F(AsyncHostResolverTest, OverflowQueueWithLowPriorityLookup) {

- int rv0 = resolver_->Resolve(info0_, &addrlist0_, callback0_.callback(), NULL,

- BoundNetLog());

- int rv1 = resolver_->Resolve(info1_, &addrlist1_, callback1_.callback(), NULL,

- BoundNetLog());

- // This one is queued and fills up the queue since its size is 1.

- int rv2 = resolver_->Resolve(info2_, &addrlist2_, callback2_.callback(), NULL,

- BoundNetLog());

- EXPECT_EQ(1u,

- static_cast<AsyncHostResolver*>(resolver_.get())->GetNumPending());

- EXPECT_EQ(ERR_IO_PENDING, rv0);

- EXPECT_EQ(ERR_IO_PENDING, rv1);

- EXPECT_EQ(ERR_IO_PENDING, rv2);

- // This one fails.

- info3_.set_priority(LOWEST);

- int rv3 = resolver_->Resolve(info3_, &addrlist3_, callback3_.callback(), NULL,

- BoundNetLog());

- EXPECT_EQ(ERR_HOST_RESOLVER_QUEUE_TOO_LARGE, rv3);

- MessageLoop::current()->RunAllPending();

- EXPECT_FALSE(callback3_.have_result());

-// Test that when the number of pending lookups is at max, a new lookup

-// with a priority higher than any of those in the queue succeeds and

-// causes the lowest priority lookup in the queue to fail.

-TEST_F(AsyncHostResolverTest, OverflowQueueWithHighPriorityLookup) {

- int rv0 = resolver_->Resolve(info0_, &addrlist0_, callback0_.callback(), NULL,

- BoundNetLog());

- int rv1 = resolver_->Resolve(info1_, &addrlist1_, callback1_.callback(), NULL,

- BoundNetLog());

- // Next lookup is queued. Since this will be ejected from the queue and

- // will not consume a socket from our factory, we are not passing it

- // predefined members.

- HostResolver::RequestInfo info(HostPortPair("cnn.com", 80));

- info.set_address_family(ADDRESS_FAMILY_IPV4);

- AddressList addrlist_fail;

- TestCompletionCallback callback_fail;

- int rv_fail = resolver_->Resolve(info, &addrlist_fail,

- callback_fail.callback(), NULL,

- BoundNetLog());

- EXPECT_EQ(1u,

- static_cast<AsyncHostResolver*>(resolver_.get())->GetNumPending());

- EXPECT_EQ(ERR_IO_PENDING, rv0);

- EXPECT_EQ(ERR_IO_PENDING, rv1);

- EXPECT_EQ(ERR_IO_PENDING, rv_fail);

- // Lookup 2 causes the above to fail, but itself should succeed.

- info2_.set_priority(HIGHEST);

- int rv2 = resolver_->Resolve(info2_, &addrlist2_, callback2_.callback(), NULL,

- BoundNetLog());

- rv0 = callback0_.WaitForResult();

- EXPECT_EQ(OK, rv0);

- VerifyAddressList(ip_addresses0_, kPortNum, addrlist0_);

- rv1 = callback1_.WaitForResult();

- EXPECT_EQ(OK, rv1);

- VerifyAddressList(ip_addresses1_, kPortNum, addrlist1_);

- rv_fail = callback_fail.WaitForResult();

- EXPECT_EQ(ERR_HOST_RESOLVER_QUEUE_TOO_LARGE, rv_fail);

- EXPECT_EQ(static_cast<addrinfo*>(NULL), addrlist_fail.head());

- rv2 = callback2_.WaitForResult();

- EXPECT_EQ(OK, rv2);

- VerifyAddressList(ip_addresses2_, kPortNum, addrlist2_);

-} // namespace net

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