Add Active Directory login UI tests

chromeos/dbus/fake_auth_policy_client.cc

 // Copyright 2016 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 "chromeos/dbus/fake_auth_policy_client.h"
 
 #include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/location.h"
@@ skipping 95 matching lines @@
 void FakeAuthPolicyClient::AuthenticateUser(
     const std::string& user_principal_name,
     int password_fd,
     const AuthCallback& callback) {
   authpolicy::ActiveDirectoryAccountData account_data;
   if (!started_) {
     LOG(ERROR) << "authpolicyd not started";
     callback.Run(authpolicy::ERROR_DBUS_FAILURE, account_data);
     return;
   }
-  account_data.set_account_id(base::MD5String(user_principal_name));
-  callback.Run(authpolicy::ERROR_NONE, account_data);
+  if (auth_error_ == authpolicy::ERROR_NONE)
+    account_data.set_account_id(base::MD5String(user_principal_name));
+  callback.Run(auth_error_, account_data);
 }
 
 void FakeAuthPolicyClient::RefreshDevicePolicy(
     const RefreshPolicyCallback& callback) {
   if (!started_) {
     LOG(ERROR) << "authpolicyd not started";
     callback.Run(false);
     return;
   }
   base::FilePath policy_path;
@@ skipping 48 matching lines @@
                      .WithShutdownBehavior(
                          base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN)
                      .WithPriority(base::TaskPriority::BACKGROUND)
                      .MayBlock(),
       base::Bind(&WritePolicyFile, policy_path, payload,
                  "google/chromeos/user"),
       callback);
 }
 
 }  // namespace chromeos