ash: Use SessionController instead of SessionStateDelegate

ash/common/session/session_controller_unittest.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 "ash/common/session/session_controller.h"
 
 #include <memory>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 105 matching lines @@
   TestSessionStateObserver observer_;
 
   DISALLOW_COPY_AND_ASSIGN(SessionControllerTest);
 };
 
 // Tests that the simple session info is reflected properly.
 TEST_F(SessionControllerTest, SimpleSessionInfo) {
   mojom::SessionInfo info;
   FillDefaultSessionInfo(&info);
   SetSessionInfo(info);
+  UpdateSession(1u, "user1@test.com");
 
   EXPECT_EQ(session_manager::kMaxmiumNumberOfUserSessions,
             controller()->GetMaximumNumberOfLoggedInUsers());
   EXPECT_TRUE(controller()->CanLockScreen());
   EXPECT_TRUE(controller()->ShouldLockScreenAutomatically());
 
   info.can_lock_screen = false;
   SetSessionInfo(info);
   EXPECT_FALSE(controller()->CanLockScreen());
   EXPECT_TRUE(controller()->ShouldLockScreenAutomatically());
 
   info.should_lock_screen_automatically = false;
   SetSessionInfo(info);
   EXPECT_FALSE(controller()->CanLockScreen());
   EXPECT_FALSE(controller()->ShouldLockScreenAutomatically());
 }
 
+// Tests that the CanLockScreen is only true with an active user session.
+TEST_F(SessionControllerTest, CanLockScreen) {
+  mojom::SessionInfo info;
+  FillDefaultSessionInfo(&info);
+  ASSERT_TRUE(info.can_lock_screen);  // Check can_lock_screen default to true.
+  SetSessionInfo(info);
+
+  // Cannot lock screen when there is no active user session.
+  EXPECT_FALSE(controller()->IsActiveUserSessionStarted());
+  EXPECT_FALSE(controller()->CanLockScreen());
+
+  UpdateSession(1u, "user1@test.com");
+  EXPECT_TRUE(controller()->IsActiveUserSessionStarted());
+  EXPECT_TRUE(controller()->CanLockScreen());
+}
+
 // Tests that AddUserSessionPolicy is set properly.
 TEST_F(SessionControllerTest, AddUserPolicy) {
   const AddUserSessionPolicy kTestCases[] = {
       AddUserSessionPolicy::ALLOWED,
       AddUserSessionPolicy::ERROR_NOT_ALLOWED_PRIMARY_USER,
       AddUserSessionPolicy::ERROR_NO_ELIGIBLE_USERS,
       AddUserSessionPolicy::ERROR_MAXIMUM_USERS_REACHED,
   };
 
   mojom::SessionInfo info;
@@ skipping 137 matching lines @@
   EXPECT_EQ("user2@test.com", observer()->active_account_id().GetUserEmail());
 
   order = {1u, 2u};
   controller()->SetUserSessionOrder(order);
   EXPECT_EQ("user1@test.com,user2@test.com,", GetUserSessionEmails());
   EXPECT_EQ("user1@test.com", observer()->active_account_id().GetUserEmail());
 }
 
 }  // namespace
 }  // namespace ash