bluetooth: android: register for adapter on/off events.

device/bluetooth/bluetooth_adapter_unittest.cc

 // Copyright 2014 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 "device/bluetooth/bluetooth_adapter.h"
 
 #include <stddef.h>
 #include <stdint.h>
 #include <utility>
 
@@ skipping 642 matching lines @@
   DiscoverLowEnergyDevice(1);
   DiscoverLowEnergyDevice(4);
   EXPECT_EQ(2, observer.device_added_count());
   EXPECT_EQ(2u, adapter_->GetDevices().size());
 }
 #endif  // defined(OS_ANDROID) || defined(OS_MACOSX) || defined(OS_WIN)
 
 #if defined(OS_ANDROID)
 TEST_F(BluetoothTest, TogglePowerFakeAdapter) {
   InitWithFakeAdapter();
+  TestBluetoothAdapterObserver observer(adapter_);
+
   ASSERT_TRUE(adapter_->IsPresent());
   ASSERT_TRUE(adapter_->IsPowered());
+  EXPECT_EQ(0, observer.powered_changed_count());
 
   // Check if power can be turned off.
   adapter_->SetPowered(false, GetCallback(Call::EXPECTED),
                        GetErrorCallback(Call::NOT_EXPECTED));
   EXPECT_FALSE(adapter_->IsPowered());
+  EXPECT_EQ(1, observer.powered_changed_count());
 
   // Check if power can be turned on again.
   adapter_->SetPowered(true, GetCallback(Call::EXPECTED),
                        GetErrorCallback(Call::NOT_EXPECTED));
   EXPECT_TRUE(adapter_->IsPowered());
+  EXPECT_EQ(2, observer.powered_changed_count());
 }
 #endif  // defined(OS_ANDROID)
 
 #if defined(OS_ANDROID)
 TEST_F(BluetoothTest, TogglePowerBeforeScan) {
   InitWithFakeAdapter();
+  TestBluetoothAdapterObserver observer(adapter_);
+
   ASSERT_TRUE(adapter_->IsPresent());
   ASSERT_TRUE(adapter_->IsPowered());
+  EXPECT_EQ(0, observer.powered_changed_count());
 
   // Turn off adapter.
   adapter_->SetPowered(false, GetCallback(Call::EXPECTED),
                        GetErrorCallback(Call::NOT_EXPECTED));
   ASSERT_FALSE(adapter_->IsPowered());
+  EXPECT_EQ(1, observer.powered_changed_count());
 
   // Try to perform a scan.
   StartLowEnergyDiscoverySessionExpectedToFail();
 
   // Turn on adapter.
   adapter_->SetPowered(true, GetCallback(Call::EXPECTED),
                        GetErrorCallback(Call::NOT_EXPECTED));
   ASSERT_TRUE(adapter_->IsPowered());
+  EXPECT_EQ(2, observer.powered_changed_count());
 
   // Try to perform a scan again.
   ResetEventCounts();
   StartLowEnergyDiscoverySession();
   EXPECT_EQ(1, callback_count_);
   EXPECT_EQ(0, error_callback_count_);
   EXPECT_TRUE(adapter_->IsDiscovering());
   ASSERT_EQ((size_t)1, discovery_sessions_.size());
   EXPECT_TRUE(discovery_sessions_[0]->IsActive());
 }
 #endif  // defined(OS_ANDROID)
 
 }  // namespace device