ash: Use SessionController instead of SessionStateDelegate

ash/common/test/test_session_controller_client.cc

+// Copyright 2017 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 "ash/common/test/test_session_controller_client.h"
+
+#include <algorithm>
+#include <string>
+
+#include "ash/common/login_status.h"
+#include "ash/common/session/session_controller.h"
+#include "ash/common/wm_shell.h"
+#include "base/strings/stringprintf.h"
+#include "components/session_manager/session_manager_types.h"
+#include "components/signin/core/account_id/account_id.h"
+#include "components/user_manager/user_type.h"
+
+namespace ash {
+namespace test {
+
+namespace {
+
+const char* kPredefinedUserEmails[] = {
+    // This is intended to be capitalized.
+    "First@tray",

[James Cook, 2017/03/17 17:14:36]

Yuck. Do these have to match particular tests in ash/chrome browser? If so it
might be nice to fix those tests in a follow-up CL to use the user%d pattern.

[xiyuan, 2017/03/17 22:52:02]

Moved into tray_user_unittests.cc when following your other comments.

+    // This is intended to be capitalized.
+    "Second@tray", "third@tray", "someone@tray"};
+
+// Returns the "canonicalized" email from a given |email| address. Note
+// production code should use gaia::CanonicalizeEmail. This is used in tests
+// without introducing dependency on google_api.

[James Cook, 2017/03/17 17:14:36]

Nice comment.

+std::string GetUserIdFromEmail(const std::string& email) {
+  std::string user_id = email;
+  std::transform(user_id.begin(), user_id.end(), user_id.begin(), ::tolower);
+  return user_id;
+}
+
+}  // namespace
+
+TestSessionControllerClient::TestSessionControllerClient(
+    SessionController* controller)
+    : controller_(controller),
+      binding_(this),
+      session_info_(mojom::SessionInfo::New()) {}

[James Cook, 2017/03/17 17:14:36]

nit: DCHECK(controller_)

[xiyuan, 2017/03/17 22:52:02]

Done.

+
+TestSessionControllerClient::~TestSessionControllerClient() = default;
+
+void TestSessionControllerClient::InitializeAndBind() {
+  session_info_->can_lock_screen = controller_->CanLockScreen();
+  session_info_->should_lock_screen_automatically =
+      controller_->ShouldLockScreenAutomatically();
+  session_info_->add_user_session_policy = controller_->GetAddUserPolicy();
+  session_info_->state = controller_->GetSessionState();
+
+  controller_->SetClient(binding_.CreateInterfacePtrAndBind());
+}
+
+void TestSessionControllerClient::Reset() {

[James Cook, 2017/03/17 17:14:36]

Should the constructor call this?

Alternately, should this just replace session_info_ with a
mojom::SessionInfo::New()?

[xiyuan, 2017/03/17 22:52:02]

Made constructor to call this and also moved mojom::SessionInfo::New() into this
function.

+  session_info_->can_lock_screen = true;
+  session_info_->should_lock_screen_automatically = false;
+  session_info_->add_user_session_policy = AddUserSessionPolicy::ALLOWED;
+  session_info_->state = session_manager::SessionState::LOGIN_PRIMARY;
+
+  controller_->ClearUserSessionsForTest();
+}
+
+void TestSessionControllerClient::SetCanLockScreen(bool can_lock) {
+  session_info_->can_lock_screen = can_lock;
+  controller_->SetSessionInfo(session_info_->Clone());
+}
+
+void TestSessionControllerClient::SetShouldLockScreenAutomatically(
+    bool should_lock) {
+  session_info_->should_lock_screen_automatically = should_lock;
+  controller_->SetSessionInfo(session_info_->Clone());
+}
+
+void TestSessionControllerClient::SetSessionState(
+    session_manager::SessionState state) {
+  session_info_->state = state;
+  controller_->SetSessionInfo(session_info_->Clone());
+
+  // TODO(xiyuan): Remove after LoginStatus becomes part of SessionController.

[James Cook, 2017/03/17 17:14:35]

Is this still necessary after my CL?

[xiyuan, 2017/03/17 22:52:02]

Still needs this for cash. Your CL covers the mash. I will have a follow up CL
to consolidate the code paths then we can remove this.

[James Cook, 2017/03/18 18:40:05]

Acknowledged.

+  WmShell::Get()->UpdateAfterLoginStatusChange(
+      state == session_manager::SessionState::ACTIVE
+          ? LoginStatus::USER
+          : LoginStatus::NOT_LOGGED_IN);
+}
+
+void TestSessionControllerClient::SetPredefinedUserSessions(int count) {
+  // Resets the controller's state.
+  Reset();
+
+  // Adds user sessions with predefined emails.
+  for (auto* user_email : kPredefinedUserEmails) {
+    if (!count)
+      break;
+    AddUserSession(user_email);
+    --count;
+  }
+
+  // Adds user sessions with numbered emails if more are needed.
+  int numbered_user_index = 0;
+  while (count) {
+    AddUserSession(base::StringPrintf("user%d@tray", numbered_user_index));
+    ++numbered_user_index;
+    --count;
+  }
+
+  // Updates session state after adding user sessions.
+  SetSessionState(controller_->NumberOfLoggedInUsers() > 0
+                      ? session_manager::SessionState::ACTIVE
+                      : session_manager::SessionState::LOGIN_PRIMARY);
+}
+
+void TestSessionControllerClient::AddUserSession(
+    const std::string& display_email) {
+  mojom::UserSessionPtr session = mojom::UserSession::New();
+  session->session_id = ++fake_session_id_;
+  session->type = user_manager::USER_TYPE_REGULAR;
+  session->account_id =
+      AccountId::FromUserEmail(GetUserIdFromEmail(display_email));
+  session->display_name = "Über tray Über tray Über tray Über tray";
+  session->display_email = display_email;
+  controller_->UpdateUserSession(std::move(session));
+}
+
+void TestSessionControllerClient::UnlockScreen() {
+  SetSessionState(session_manager::SessionState::ACTIVE);
+}
+
+void TestSessionControllerClient::RequestLockScreen() {
+  SetSessionState(session_manager::SessionState::LOCKED);
+}
+
+void TestSessionControllerClient::SwitchActiveUser(
+    const AccountId& account_id) {
+  std::vector<uint32_t> session_order;
+  session_order.reserve(controller_->GetUserSessions().size());
+
+  for (auto& user_session : controller_->GetUserSessions()) {

[James Cook, 2017/03/17 17:14:35]

const?

[xiyuan, 2017/03/17 22:52:02]

Done.

+    if (user_session->account_id == account_id) {
+      session_order.insert(session_order.begin(), user_session->session_id);
+    } else {
+      session_order.push_back(user_session->session_id);
+    }
+  }
+
+  controller_->SetUserSessionOrder(session_order);
+}
+
+void TestSessionControllerClient::CycleActiveUser(
+    CycleUserDirection direction) {
+  DCHECK_GT(controller_->NumberOfLoggedInUsers(), 0);
+
+  const std::vector<mojom::UserSessionPtr>& sessions =
+      controller_->GetUserSessions();
+  const size_t session_count = sessions.size();
+
+  // The following code depends on that |fake_session_id_| is used to generate
+  // session ids.
+  uint32_t session_id = sessions[0]->session_id;
+  if (direction == CycleUserDirection::NEXT) {
+    ++session_id;
+  } else if (direction == CycleUserDirection::PREVIOUS) {
+    DCHECK_GT(session_id, 0u);
+    --session_id;
+  } else {
+    LOG(ERROR) << "Invalid cycle user direction="
+               << static_cast<int>(direction);
+    return;
+  }
+
+  // Valid range of an session id is [1, session_count].
+  if (session_id < 1u)
+    session_id = session_count;
+  if (session_id > session_count)
+    session_id = 1u;
+
+  // Maps session id to AccountId and call SwitchActiveUser.
+  auto it = std::find_if(sessions.begin(), sessions.end(),

[James Cook, 2017/03/17 17:14:36]

+1 for using find_if(). I'm starting to like small lambdas.

[xiyuan, 2017/03/17 22:52:02]

:)

+                         [session_id](const mojom::UserSessionPtr& session) {
+                           return session && session->session_id == session_id;
+                         });
+  if (it == sessions.end()) {
+    NOTREACHED();
+    return;
+  }
+
+  SwitchActiveUser((*it)->account_id);
+}
+
+}  // namespace test
+}  // namespace ash