Make ServerBoundCertStore interface async, move SQLiteServerBoundCertStore load onto DB thread.

net/base/default_server_bound_cert_store_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/default_server_bound_cert_store.h"
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/message_loop.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace net {
 
+namespace {
+
+void CallCounter(int* counter) {
+  (*counter)++;
+}
+
+void NotCalled() {
+  ADD_FAILURE() << "Unexpected callback execution.";
+}
+
+void GetCertCallbackNotCalled(const std::string& server_identifier,
+                              SSLClientCertType type,
+                              base::Time expiration_time,
+                              const std::string& private_key_result,
+                              const std::string& cert_result) {
+  ADD_FAILURE() << "Unexpected callback execution.";
+}
+
+class AsyncGetCertHelper {
+ public:
+  AsyncGetCertHelper() : called_(false) {}
+
+  void Callback(const std::string& server_identifier,
+                SSLClientCertType type,
+                base::Time expiration_time,
+                const std::string& private_key_result,
+                const std::string& cert_result) {
+    server_identifier_ = server_identifier;
+    type_ = type;
+    expiration_time_ = expiration_time;
+    private_key_ = private_key_result;
+    cert_ = cert_result;
+    called_ = true;
+  }
+
+  std::string server_identifier_;
+  SSLClientCertType type_;
+  base::Time expiration_time_;
+  std::string private_key_;
+  std::string cert_;
+  bool called_;
+};
+
+void GetAllCallback(
+    ServerBoundCertStore::ServerBoundCertList* dest,
+    const ServerBoundCertStore::ServerBoundCertList& result) {
+  *dest = result;
+}
+
 class MockPersistentStore
     : public DefaultServerBoundCertStore::PersistentStore {
  public:
   MockPersistentStore();
 
   // DefaultServerBoundCertStore::PersistentStore implementation.
-  virtual bool Load(
-      std::vector<DefaultServerBoundCertStore::ServerBoundCert*>* certs)
-          OVERRIDE;
+  virtual void Load(const LoadedCallback& loaded_callback) OVERRIDE;
   virtual void AddServerBoundCert(
       const DefaultServerBoundCertStore::ServerBoundCert& cert) OVERRIDE;
   virtual void DeleteServerBoundCert(
       const DefaultServerBoundCertStore::ServerBoundCert& cert) OVERRIDE;
   virtual void SetForceKeepSessionState() OVERRIDE;
   virtual void Flush(const base::Closure& completion_task) OVERRIDE;
 
  protected:
   virtual ~MockPersistentStore();
 
  private:
   typedef std::map<std::string, DefaultServerBoundCertStore::ServerBoundCert>
       ServerBoundCertMap;
 
   ServerBoundCertMap origin_certs_;
 };
 
 MockPersistentStore::MockPersistentStore() {}
 
-bool MockPersistentStore::Load(
-    std::vector<DefaultServerBoundCertStore::ServerBoundCert*>* certs) {
+void MockPersistentStore::Load(const LoadedCallback& loaded_callback) {
+  scoped_ptr<ScopedVector<DefaultServerBoundCertStore::ServerBoundCert> >
+      certs(new ScopedVector<DefaultServerBoundCertStore::ServerBoundCert>());
   ServerBoundCertMap::iterator it;
 
   for (it = origin_certs_.begin(); it != origin_certs_.end(); ++it) {
     certs->push_back(
         new DefaultServerBoundCertStore::ServerBoundCert(it->second));
   }
 
-  return true;
+  MessageLoop::current()->PostTask(
+      FROM_HERE, base::Bind(loaded_callback, base::Passed(&certs)));
 }
 
 void MockPersistentStore::AddServerBoundCert(
     const DefaultServerBoundCertStore::ServerBoundCert& cert) {
   origin_certs_[cert.server_identifier()] = cert;
 }
 
 void MockPersistentStore::DeleteServerBoundCert(
     const DefaultServerBoundCertStore::ServerBoundCert& cert) {
   origin_certs_.erase(cert.server_identifier());
 }
 
 void MockPersistentStore::SetForceKeepSessionState() {}
 
 void MockPersistentStore::Flush(const base::Closure& completion_task) {
   NOTREACHED();
 }
 
 MockPersistentStore::~MockPersistentStore() {}
 
+}  // namespace
+
 TEST(DefaultServerBoundCertStoreTest, TestLoading) {
   scoped_refptr<MockPersistentStore> persistent_store(new MockPersistentStore);
 
   persistent_store->AddServerBoundCert(
       DefaultServerBoundCertStore::ServerBoundCert(
           "google.com",
           CLIENT_CERT_RSA_SIGN,
           base::Time(),
           base::Time(),
           "a", "b"));
   persistent_store->AddServerBoundCert(
       DefaultServerBoundCertStore::ServerBoundCert(
           "verisign.com",
           CLIENT_CERT_ECDSA_SIGN,
           base::Time(),
           base::Time(),
           "c", "d"));
 
   // Make sure certs load properly.
   DefaultServerBoundCertStore store(persistent_store.get());
-  EXPECT_EQ(2, store.GetCertCount());
+  // Load has not occurred yet.
+  EXPECT_EQ(0, store.GetCertCount());
   store.SetServerBoundCert(
       "verisign.com",
       CLIENT_CERT_RSA_SIGN,
       base::Time(),
       base::Time(),
       "e", "f");
+  // Wait for load & queued set task.
+  MessageLoop::current()->RunUntilIdle();
   EXPECT_EQ(2, store.GetCertCount());
   store.SetServerBoundCert(
       "twitter.com",
       CLIENT_CERT_RSA_SIGN,
       base::Time(),
       base::Time(),
       "g", "h");
+  // Set should be synchronous now that load is done.
   EXPECT_EQ(3, store.GetCertCount());
 }
 
+//TODO(mattm): add more tests of without a persistent store?
 TEST(DefaultServerBoundCertStoreTest, TestSettingAndGetting) {
+  // No persistent store, all calls will be synchronous.
   DefaultServerBoundCertStore store(NULL);
   SSLClientCertType type;
-  base::Time creation_time;
   base::Time expiration_time;
   std::string private_key, cert;
   EXPECT_EQ(0, store.GetCertCount());
-  EXPECT_FALSE(store.GetServerBoundCert("verisign.com",
-                                        &type,
-                                        &creation_time,
-                                        &expiration_time,
-                                        &private_key,
-                                        &cert));
+  EXPECT_TRUE(store.GetServerBoundCert("verisign.com",
+                                       &type,
+                                       &expiration_time,
+                                       &private_key,
+                                       &cert,
+                                       base::Bind(&GetCertCallbackNotCalled)));
+  EXPECT_EQ(CLIENT_CERT_INVALID_TYPE, type);
   EXPECT_TRUE(private_key.empty());
   EXPECT_TRUE(cert.empty());
   store.SetServerBoundCert(
       "verisign.com",
       CLIENT_CERT_RSA_SIGN,
       base::Time::FromInternalValue(123),
       base::Time::FromInternalValue(456),
       "i", "j");
   EXPECT_TRUE(store.GetServerBoundCert("verisign.com",
                                        &type,
-                                       &creation_time,
                                        &expiration_time,
                                        &private_key,
-                                       &cert));
+                                       &cert,
+                                       base::Bind(&GetCertCallbackNotCalled)));
   EXPECT_EQ(CLIENT_CERT_RSA_SIGN, type);
-  EXPECT_EQ(123, creation_time.ToInternalValue());
   EXPECT_EQ(456, expiration_time.ToInternalValue());
   EXPECT_EQ("i", private_key);
   EXPECT_EQ("j", cert);
 }
 
 TEST(DefaultServerBoundCertStoreTest, TestDuplicateCerts) {
   scoped_refptr<MockPersistentStore> persistent_store(new MockPersistentStore);
   DefaultServerBoundCertStore store(persistent_store.get());
 
   SSLClientCertType type;
-  base::Time creation_time;
   base::Time expiration_time;
   std::string private_key, cert;
   EXPECT_EQ(0, store.GetCertCount());
   store.SetServerBoundCert(
       "verisign.com",
       CLIENT_CERT_RSA_SIGN,
       base::Time::FromInternalValue(123),
       base::Time::FromInternalValue(1234),
       "a", "b");
   store.SetServerBoundCert(
       "verisign.com",
       CLIENT_CERT_ECDSA_SIGN,
       base::Time::FromInternalValue(456),
       base::Time::FromInternalValue(4567),
       "c", "d");
 
+  // Wait for load & queued set tasks.
+  MessageLoop::current()->RunUntilIdle();
   EXPECT_EQ(1, store.GetCertCount());
   EXPECT_TRUE(store.GetServerBoundCert("verisign.com",
                                        &type,
-                                       &creation_time,
                                        &expiration_time,
                                        &private_key,
-                                       &cert));
+                                       &cert,
+                                       base::Bind(&GetCertCallbackNotCalled)));
   EXPECT_EQ(CLIENT_CERT_ECDSA_SIGN, type);
-  EXPECT_EQ(456, creation_time.ToInternalValue());
   EXPECT_EQ(4567, expiration_time.ToInternalValue());
   EXPECT_EQ("c", private_key);
   EXPECT_EQ("d", cert);
 }
 
+TEST(DefaultServerBoundCertStoreTest, TestAsyncGet) {
+  scoped_refptr<MockPersistentStore> persistent_store(new MockPersistentStore);
+  persistent_store->AddServerBoundCert(ServerBoundCertStore::ServerBoundCert(
+      "verisign.com",
+      CLIENT_CERT_RSA_SIGN,
+      base::Time::FromInternalValue(123),
+      base::Time::FromInternalValue(1234),
+      "a", "b"));
+
+  DefaultServerBoundCertStore store(persistent_store.get());
+  AsyncGetCertHelper helper;
+  SSLClientCertType type;
+  base::Time expiration_time;
+  std::string private_key;
+  std::string cert = "not set";
+  EXPECT_EQ(0, store.GetCertCount());
+  EXPECT_FALSE(store.GetServerBoundCert(
+      "verisign.com", &type, &expiration_time, &private_key, &cert,
+      base::Bind(&AsyncGetCertHelper::Callback, base::Unretained(&helper))));
+
+  // Wait for load & queued get tasks.
+  MessageLoop::current()->RunUntilIdle();
+  EXPECT_EQ(1, store.GetCertCount());
+  EXPECT_EQ("not set", cert);
+  EXPECT_TRUE(helper.called_);
+  EXPECT_EQ("verisign.com", helper.server_identifier_);
+  EXPECT_EQ(CLIENT_CERT_RSA_SIGN, helper.type_);
+  EXPECT_EQ(1234, helper.expiration_time_.ToInternalValue());
+  EXPECT_EQ("a", helper.private_key_);
+  EXPECT_EQ("b", helper.cert_);
+}
+
 TEST(DefaultServerBoundCertStoreTest, TestDeleteAll) {
   scoped_refptr<MockPersistentStore> persistent_store(new MockPersistentStore);
   DefaultServerBoundCertStore store(persistent_store.get());
 
-  EXPECT_EQ(0, store.GetCertCount());
   store.SetServerBoundCert(
       "verisign.com",
       CLIENT_CERT_RSA_SIGN,
       base::Time(),
       base::Time(),
       "a", "b");
   store.SetServerBoundCert(
       "google.com",
       CLIENT_CERT_RSA_SIGN,
       base::Time(),
       base::Time(),
       "c", "d");
   store.SetServerBoundCert(
       "harvard.com",
       CLIENT_CERT_RSA_SIGN,
       base::Time(),
       base::Time(),
       "e", "f");
+  // Wait for load & queued set tasks.
+  MessageLoop::current()->RunUntilIdle();
 
   EXPECT_EQ(3, store.GetCertCount());
-  store.DeleteAll();
+  int delete_finished = 0;
+  store.DeleteAll(base::Bind(&CallCounter, &delete_finished));
+  ASSERT_EQ(1, delete_finished);
   EXPECT_EQ(0, store.GetCertCount());
 }
 
+TEST(DefaultServerBoundCertStoreTest, TestAsyncGetAndDeleteAll) {
+  scoped_refptr<MockPersistentStore> persistent_store(new MockPersistentStore);
+  persistent_store->AddServerBoundCert(ServerBoundCertStore::ServerBoundCert(
+      "verisign.com",
+      CLIENT_CERT_RSA_SIGN,
+      base::Time(),
+      base::Time(),
+      "a", "b"));
+  persistent_store->AddServerBoundCert(ServerBoundCertStore::ServerBoundCert(
+      "google.com",
+      CLIENT_CERT_RSA_SIGN,
+      base::Time(),
+      base::Time(),
+      "c", "d"));
+
+  ServerBoundCertStore::ServerBoundCertList pre_certs;
+  ServerBoundCertStore::ServerBoundCertList post_certs;
+  int delete_finished = 0;
+  DefaultServerBoundCertStore store(persistent_store.get());
+
+  store.GetAllServerBoundCerts(base::Bind(GetAllCallback, &pre_certs));
+  store.DeleteAll(base::Bind(&CallCounter, &delete_finished));
+  store.GetAllServerBoundCerts(base::Bind(GetAllCallback, &post_certs));
+  // Tasks have not run yet.
+  EXPECT_EQ(0u, pre_certs.size());
+  // Wait for load & queued tasks.
+  MessageLoop::current()->RunUntilIdle();
+  EXPECT_EQ(0, store.GetCertCount());
+  EXPECT_EQ(2u, pre_certs.size());
+  EXPECT_EQ(0u, post_certs.size());
+}
+
 TEST(DefaultServerBoundCertStoreTest, TestDelete) {
   scoped_refptr<MockPersistentStore> persistent_store(new MockPersistentStore);
   DefaultServerBoundCertStore store(persistent_store.get());
 
   SSLClientCertType type;
-  base::Time creation_time;
   base::Time expiration_time;
   std::string private_key, cert;
   EXPECT_EQ(0, store.GetCertCount());
   store.SetServerBoundCert(
       "verisign.com",
       CLIENT_CERT_RSA_SIGN,
       base::Time(),
       base::Time(),
       "a", "b");
+  // Wait for load & queued set task.
+  MessageLoop::current()->RunUntilIdle();
+
   store.SetServerBoundCert(
       "google.com",
       CLIENT_CERT_ECDSA_SIGN,
       base::Time(),
       base::Time(),
       "c", "d");
 
   EXPECT_EQ(2, store.GetCertCount());
-  store.DeleteServerBoundCert("verisign.com");
+  int delete_finished = 0;
+  store.DeleteServerBoundCert("verisign.com",
+                              base::Bind(&CallCounter, &delete_finished));
+  ASSERT_EQ(1, delete_finished);
   EXPECT_EQ(1, store.GetCertCount());
-  EXPECT_FALSE(store.GetServerBoundCert("verisign.com",
-                                        &type,
-                                        &creation_time,
-                                        &expiration_time,
-                                        &private_key,
-                                        &cert));
+  EXPECT_TRUE(store.GetServerBoundCert("verisign.com",
+                                       &type,
+                                       &expiration_time,
+                                       &private_key,
+                                       &cert,
+                                       base::Bind(&GetCertCallbackNotCalled)));
+  EXPECT_EQ(CLIENT_CERT_INVALID_TYPE, type);
   EXPECT_TRUE(store.GetServerBoundCert("google.com",
                                        &type,
-                                       &creation_time,
                                        &expiration_time,
                                        &private_key,
-                                       &cert));
-  store.DeleteServerBoundCert("google.com");
+                                       &cert,
+                                       base::Bind(&GetCertCallbackNotCalled)));
+  EXPECT_EQ(CLIENT_CERT_ECDSA_SIGN, type);
+  int delete2_finished = 0;
+  store.DeleteServerBoundCert("google.com",
+                              base::Bind(&CallCounter, &delete2_finished));
+  ASSERT_EQ(1, delete2_finished);
   EXPECT_EQ(0, store.GetCertCount());
-  EXPECT_FALSE(store.GetServerBoundCert("google.com",
-                                        &type,
-                                        &creation_time,
-                                        &expiration_time,
-                                        &private_key,
-                                        &cert));
+  EXPECT_TRUE(store.GetServerBoundCert("google.com",
+                                       &type,
+                                       &expiration_time,
+                                       &private_key,
+                                       &cert,
+                                       base::Bind(&GetCertCallbackNotCalled)));
+  EXPECT_EQ(CLIENT_CERT_INVALID_TYPE, type);
+}
+
+TEST(DefaultServerBoundCertStoreTest, TestAsyncDelete) {
+  scoped_refptr<MockPersistentStore> persistent_store(new MockPersistentStore);
+  persistent_store->AddServerBoundCert(ServerBoundCertStore::ServerBoundCert(
+      "a.com",
+      CLIENT_CERT_RSA_SIGN,
+      base::Time::FromInternalValue(1),
+      base::Time::FromInternalValue(2),
+      "a", "b"));
+  persistent_store->AddServerBoundCert(ServerBoundCertStore::ServerBoundCert(
+      "b.com",
+      CLIENT_CERT_RSA_SIGN,
+      base::Time::FromInternalValue(3),
+      base::Time::FromInternalValue(4),
+      "c", "d"));
+  DefaultServerBoundCertStore store(persistent_store.get());
+  int delete_finished = 0;
+  store.DeleteServerBoundCert("a.com",
+                              base::Bind(&CallCounter, &delete_finished));
+
+  AsyncGetCertHelper a_helper;
+  AsyncGetCertHelper b_helper;
+  SSLClientCertType type;
+  base::Time expiration_time;
+  std::string private_key;
+  std::string cert = "not set";
+  EXPECT_EQ(0, store.GetCertCount());
+  EXPECT_FALSE(store.GetServerBoundCert(
+      "a.com", &type, &expiration_time, &private_key, &cert,
+      base::Bind(&AsyncGetCertHelper::Callback, base::Unretained(&a_helper))));
+  EXPECT_FALSE(store.GetServerBoundCert(
+      "b.com", &type, &expiration_time, &private_key, &cert,
+      base::Bind(&AsyncGetCertHelper::Callback, base::Unretained(&b_helper))));
+
+  EXPECT_EQ(0, delete_finished);
+  EXPECT_FALSE(a_helper.called_);
+  EXPECT_FALSE(b_helper.called_);
+  // Wait for load & queued tasks.
+  MessageLoop::current()->RunUntilIdle();
+  EXPECT_EQ(1, delete_finished);
+  EXPECT_EQ(1, store.GetCertCount());
+  EXPECT_EQ("not set", cert);
+  EXPECT_TRUE(a_helper.called_);
+  EXPECT_EQ("a.com", a_helper.server_identifier_);
+  EXPECT_EQ(CLIENT_CERT_INVALID_TYPE, a_helper.type_);
+  EXPECT_EQ(0, a_helper.expiration_time_.ToInternalValue());
+  EXPECT_EQ("", a_helper.private_key_);
+  EXPECT_EQ("", a_helper.cert_);
+  EXPECT_TRUE(b_helper.called_);
+  EXPECT_EQ("b.com", b_helper.server_identifier_);
+  EXPECT_EQ(CLIENT_CERT_RSA_SIGN, b_helper.type_);
+  EXPECT_EQ(4, b_helper.expiration_time_.ToInternalValue());
+  EXPECT_EQ("c", b_helper.private_key_);
+  EXPECT_EQ("d", b_helper.cert_);
 }
 
 TEST(DefaultServerBoundCertStoreTest, TestGetAll) {
   scoped_refptr<MockPersistentStore> persistent_store(new MockPersistentStore);
   DefaultServerBoundCertStore store(persistent_store.get());
 
   EXPECT_EQ(0, store.GetCertCount());
   store.SetServerBoundCert(
       "verisign.com",
       CLIENT_CERT_RSA_SIGN,
@@ skipping 11 matching lines @@
       CLIENT_CERT_RSA_SIGN,
       base::Time(),
       base::Time(),
       "e", "f");
   store.SetServerBoundCert(
       "mit.com",
       CLIENT_CERT_RSA_SIGN,
       base::Time(),
       base::Time(),
       "g", "h");
+  // Wait for load & queued set tasks.
+  MessageLoop::current()->RunUntilIdle();
 
   EXPECT_EQ(4, store.GetCertCount());
   ServerBoundCertStore::ServerBoundCertList certs;
-  store.GetAllServerBoundCerts(&certs);
+  store.GetAllServerBoundCerts(base::Bind(GetAllCallback, &certs));
   EXPECT_EQ(4u, certs.size());
 }
 
 TEST(DefaultServerBoundCertStoreTest, TestInitializeFrom) {
   scoped_refptr<MockPersistentStore> persistent_store(new MockPersistentStore);
   DefaultServerBoundCertStore store(persistent_store.get());
 
   store.SetServerBoundCert(
       "preexisting.com",
       CLIENT_CERT_RSA_SIGN,
       base::Time(),
       base::Time(),
       "a", "b");
   store.SetServerBoundCert(
       "both.com",
       CLIENT_CERT_ECDSA_SIGN,
       base::Time(),
       base::Time(),
       "c", "d");
+  // Wait for load & queued set tasks.
+  MessageLoop::current()->RunUntilIdle();
   EXPECT_EQ(2, store.GetCertCount());
 
   ServerBoundCertStore::ServerBoundCertList source_certs;
   source_certs.push_back(ServerBoundCertStore::ServerBoundCert(
       "both.com",
       CLIENT_CERT_RSA_SIGN,
       base::Time(),
       base::Time(),
       // Key differs from above to test that existing entries are overwritten.
       "e", "f"));
   source_certs.push_back(ServerBoundCertStore::ServerBoundCert(
       "copied.com",
       CLIENT_CERT_RSA_SIGN,
       base::Time(),
       base::Time(),
       "g", "h"));
   store.InitializeFrom(source_certs);
   EXPECT_EQ(3, store.GetCertCount());
 
   ServerBoundCertStore::ServerBoundCertList certs;
-  store.GetAllServerBoundCerts(&certs);
+  store.GetAllServerBoundCerts(base::Bind(GetAllCallback, &certs));
   ASSERT_EQ(3u, certs.size());
 
   ServerBoundCertStore::ServerBoundCertList::iterator cert = certs.begin();
+  EXPECT_EQ("both.com", cert->server_identifier());
+  EXPECT_EQ("e", cert->private_key());
+
+  ++cert;
+  EXPECT_EQ("copied.com", cert->server_identifier());
+  EXPECT_EQ("g", cert->private_key());
+
+  ++cert;
+  EXPECT_EQ("preexisting.com", cert->server_identifier());
+  EXPECT_EQ("a", cert->private_key());
+}
+
+TEST(DefaultServerBoundCertStoreTest, TestAsyncInitializeFrom) {
+  scoped_refptr<MockPersistentStore> persistent_store(new MockPersistentStore);
+  persistent_store->AddServerBoundCert(ServerBoundCertStore::ServerBoundCert(
+      "preexisting.com",
+      CLIENT_CERT_RSA_SIGN,
+      base::Time(),
+      base::Time(),
+      "a", "b"));
+  persistent_store->AddServerBoundCert(ServerBoundCertStore::ServerBoundCert(
+      "both.com",
+      CLIENT_CERT_RSA_SIGN,
+      base::Time(),
+      base::Time(),
+      "c", "d"));
+
+  DefaultServerBoundCertStore store(persistent_store.get());
+  ServerBoundCertStore::ServerBoundCertList source_certs;
+  source_certs.push_back(ServerBoundCertStore::ServerBoundCert(
+      "both.com",
+      CLIENT_CERT_RSA_SIGN,
+      base::Time(),
+      base::Time(),
+      // Key differs from above to test that existing entries are overwritten.
+      "e", "f"));
+  source_certs.push_back(ServerBoundCertStore::ServerBoundCert(
+      "copied.com",
+      CLIENT_CERT_RSA_SIGN,
+      base::Time(),
+      base::Time(),
+      "g", "h"));
+  store.InitializeFrom(source_certs);
+  EXPECT_EQ(0, store.GetCertCount());
+  // Wait for load & queued tasks.
+  MessageLoop::current()->RunUntilIdle();
+  EXPECT_EQ(3, store.GetCertCount());
+
+  ServerBoundCertStore::ServerBoundCertList certs;
+  store.GetAllServerBoundCerts(base::Bind(GetAllCallback, &certs));
+  ASSERT_EQ(3u, certs.size());
+
+  ServerBoundCertStore::ServerBoundCertList::iterator cert = certs.begin();
   EXPECT_EQ("both.com", cert->server_identifier());
   EXPECT_EQ("e", cert->private_key());
 
   ++cert;
   EXPECT_EQ("copied.com", cert->server_identifier());
   EXPECT_EQ("g", cert->private_key());
 
   ++cert;
   EXPECT_EQ("preexisting.com", cert->server_identifier());
   EXPECT_EQ("a", cert->private_key());
 }
 
 }  // namespace net