[EasyUnlock] Fix UI shown on lock screen when Bluetooth is disabled.

components/proximity_auth/unlock_manager_impl_unittest.cc

 // Copyright 2015 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 "components/proximity_auth/unlock_manager_impl.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/macros.h"
@@ skipping 501 matching lines @@
   CreateUnlockManager(ProximityAuthSystem::SESSION_LOCK);
   unlock_manager_->SetRemoteDeviceLifeCycle(&life_cycle_);
 
   EXPECT_CALL(proximity_auth_client_,
               UpdateScreenlockState(ScreenlockState::BLUETOOTH_CONNECTING));
   life_cycle_.ChangeState(RemoteDeviceLifeCycle::State::FINDING_CONNECTION);
   unlock_manager_->OnLifeCycleStateChanged();
 }
 
 TEST_F(ProximityAuthUnlockManagerImplTest,
+       OnLifeCycleStateChanged_FindingConnection_BluetoothAdapterOff) {
+  CreateUnlockManager(ProximityAuthSystem::SESSION_LOCK);
+  unlock_manager_->SetRemoteDeviceLifeCycle(&life_cycle_);
+
+  EXPECT_CALL(proximity_auth_client_,
+              UpdateScreenlockState(ScreenlockState::NO_BLUETOOTH));
+  ON_CALL(*bluetooth_adapter_, IsPowered()).WillByDefault(Return(false));
+  life_cycle_.ChangeState(RemoteDeviceLifeCycle::State::FINDING_CONNECTION);
+  unlock_manager_->OnLifeCycleStateChanged();
+}
+
+TEST_F(ProximityAuthUnlockManagerImplTest,
        OnLifeCycleStateChanged_Authenticating_UpdatesScreenlockState) {
   CreateUnlockManager(ProximityAuthSystem::SESSION_LOCK);
   unlock_manager_->SetRemoteDeviceLifeCycle(&life_cycle_);
 
   EXPECT_CALL(proximity_auth_client_,
               UpdateScreenlockState(ScreenlockState::BLUETOOTH_CONNECTING));
   life_cycle_.ChangeState(RemoteDeviceLifeCycle::State::AUTHENTICATING);
   unlock_manager_->OnLifeCycleStateChanged();
 }
 
@@ skipping 300 matching lines @@
           }));
 
   EXPECT_CALL(messenger_, RequestDecryption(kChallenge));
   unlock_manager_->OnAuthAttempted(ScreenlockBridge::LockHandler::USER_CLICK);
 
   EXPECT_CALL(proximity_auth_client_, FinalizeSignin(std::string()));
   unlock_manager_->OnDecryptResponse(std::string());
 }
 
 }  // namespace proximity_auth