[net/dns] Serve requests from HOSTS file if possible.

net/base/host_resolver_impl_unittest.cc

 // 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 "net/base/host_resolver_impl.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 10 matching lines @@
 #include "base/time.h"
 #include "net/base/address_list.h"
 #include "net/base/completion_callback.h"
 #include "net/base/host_cache.h"
 #include "net/base/mock_host_resolver.h"
 #include "net/base/net_errors.h"
 #include "net/base/net_log_unittest.h"
 #include "net/base/net_util.h"
 #include "net/base/sys_addrinfo.h"
 #include "net/base/test_completion_callback.h"
+#include "net/dns/dns_test_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace net {
 
 using base::TimeDelta;
 using base::TimeTicks;
 
 static const size_t kMaxJobs = 10u;
 static const size_t kMaxRetryAttempts = 4u;
 
@@ skipping 1702 matching lines @@
   // Resolve returns -4 to indicate that 3rd attempt has resolved the host.
   EXPECT_EQ(-4, callback.WaitForResult());
 
   resolver_proc->WaitForAllAttemptsToFinish(TimeDelta::FromMilliseconds(60000));
   MessageLoop::current()->RunAllPending();
 
   EXPECT_EQ(resolver_proc->total_attempts_resolved(), kTotalAttempts);
   EXPECT_EQ(resolver_proc->resolved_attempt_number(), kAttemptNumberToResolve);
 }
 
+
+// TODO(szym): test HostResolverImpl::DnsTask using MockDnsClient.
+// TODO(szym): test ServeFromHosts using mock DnsHosts.
+
 // TODO(cbentzel): Test a mix of requests with different HostResolverFlags.
 
 }  // namespace net