cros: Extract TrayBluetoothHelper from SystemTrayDelegateChromeOS

chrome/browser/ui/ash/tray_bluetooth_helper_unittest.cc

Index: chrome/browser/ui/ash/tray_bluetooth_helper_unittest.cc
diff --git a/chrome/browser/ui/ash/tray_bluetooth_helper_unittest.cc b/chrome/browser/ui/ash/tray_bluetooth_helper_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..4f52058b08cd3faab31ca13d4420a42e36c1348d
--- /dev/null
+++ b/chrome/browser/ui/ash/tray_bluetooth_helper_unittest.cc
@@ -0,0 +1,60 @@
+// 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 "chrome/browser/ui/ash/tray_bluetooth_helper.h"
+
+#include <vector>
+
+#include "ash/common/system/tray/system_tray_delegate.h"
+#include "ash/test/ash_test_base.h"
+#include "device/bluetooth/dbus/bluez_dbus_manager.h"
+#include "device/bluetooth/dbus/fake_bluetooth_adapter_client.h"
+
+using bluez::BluezDBusManager;
+using bluez::FakeBluetoothAdapterClient;
+
+using TrayBluetoothHelperTest = ash::test::AshTestBase;
+
+// Tests basic functionality like turning Bluetooth on and off.
+TEST_F(TrayBluetoothHelperTest, Basics) {
+  // Set Bluetooth discovery simulation delay to 0 so the test doesn't have to
+  // wait or use timers.
+  FakeBluetoothAdapterClient* adapter_client =
+      static_cast<FakeBluetoothAdapterClient*>(
+          BluezDBusManager::Get()->GetBluetoothAdapterClient());
+  adapter_client->SetSimulationIntervalMs(0);
+
+  TrayBluetoothHelper helper(nullptr);
+  helper.Initialize();
+  RunAllPendingInMessageLoop();
+  EXPECT_TRUE(helper.GetAvailable());
+  EXPECT_FALSE(helper.GetEnabled());
+  EXPECT_FALSE(helper.HasDiscoverySession());
+  EXPECT_FALSE(helper.IsDiscovering());
+
+  std::vector<ash::BluetoothDeviceInfo> devices;
+  helper.GetAvailableDevices(&devices);
+  // The devices are fake in tests, so don't assume any particular number.
+  EXPECT_FALSE(devices.empty());
+
+  // Turn Bluetooth on.
+  helper.ToggleEnabled();
+  RunAllPendingInMessageLoop();
+  EXPECT_TRUE(helper.GetEnabled());
+
+  helper.StartDiscovering();
+  RunAllPendingInMessageLoop();
+  EXPECT_TRUE(helper.HasDiscoverySession());
+  EXPECT_TRUE(helper.IsDiscovering());
+
+  helper.StopDiscovering();
+  RunAllPendingInMessageLoop();
+  EXPECT_FALSE(helper.HasDiscoverySession());
+  EXPECT_FALSE(helper.IsDiscovering());
+
+  // Turn Bluetooth off.
+  helper.ToggleEnabled();
+  RunAllPendingInMessageLoop();
+  EXPECT_FALSE(helper.GetEnabled());
+}