cros: Extract TrayBluetoothHelper from SystemTrayDelegateChromeOS

chrome/browser/ui/ash/system_tray_delegate_chromeos_browsertest_chromeos.cc

Index: chrome/browser/ui/ash/system_tray_delegate_chromeos_browsertest_chromeos.cc
diff --git a/chrome/browser/ui/ash/system_tray_delegate_chromeos_browsertest_chromeos.cc b/chrome/browser/ui/ash/system_tray_delegate_chromeos_browsertest_chromeos.cc
index a64eb66e65d4eb7e6d5e960d9c495791bfed8220..291164818864da44192d4a3ec28594f5d9c6e703 100644
--- a/chrome/browser/ui/ash/system_tray_delegate_chromeos_browsertest_chromeos.cc
+++ b/chrome/browser/ui/ash/system_tray_delegate_chromeos_browsertest_chromeos.cc
@@ -12,6 +12,7 @@
 #include "ash/common/system/date/tray_date.h"
 #include "ash/common/system/date/tray_system_info.h"
 #include "ash/common/system/tray/system_tray.h"
+#include "ash/common/wm_shell.h"
 #include "ash/shell.h"
 #include "base/macros.h"
 #include "chrome/browser/chromeos/login/login_manager_test.h"
@@ -25,6 +26,11 @@
 #include "components/prefs/pref_service.h"
 #include "components/user_manager/user_manager.h"
 #include "content/public/test/test_utils.h"
+#include "device/bluetooth/dbus/bluez_dbus_manager.h"
+#include "device/bluetooth/dbus/fake_bluetooth_adapter_client.h"
+
+using bluez::BluezDBusManager;
+using bluez::FakeBluetoothAdapterClient;
 
 namespace chromeos {
 
@@ -111,4 +117,48 @@ IN_PROC_BROWSER_TEST_F(SystemTrayDelegateChromeOSTest,
   EXPECT_EQ(base::k24HourClock, GetHourType());
 }
 
+using SystemTrayDelegateBluetoothTest = InProcessBrowserTest;
+
+// Tests basic functionality of the Bluetooth interface.
+// TODO(jamescook): Delete this test when TrayBluetoothHelper moves to ash.

[msw, 2017/03/17 00:11:06]

nit: cite a bug?

[James Cook, 2017/03/17 04:02:57]

Done.

+IN_PROC_BROWSER_TEST_F(SystemTrayDelegateBluetoothTest, 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);
+
+  ash::SystemTrayDelegate* delegate =
+      ash::WmShell::Get()->system_tray_delegate();
+  EXPECT_TRUE(delegate->GetBluetoothAvailable());
+  EXPECT_FALSE(delegate->GetBluetoothEnabled());
+  EXPECT_FALSE(delegate->GetBluetoothDiscovering());

[msw, 2017/03/17 00:11:05]

nit: also check IsBluetoothDiscovering like below?

[James Cook, 2017/03/17 04:02:57]

Done.

+
+  ash::BluetoothDeviceList devices;
+  delegate->GetAvailableBluetoothDevices(&devices);
+  // The devices are fake in tests, so don't assume any particular number.
+  EXPECT_FALSE(devices.empty());
+
+  // Turn Bluetooth on.
+  delegate->ToggleBluetooth();
+  content::RunAllPendingInMessageLoop();
+  EXPECT_TRUE(delegate->GetBluetoothEnabled());
+
+  delegate->BluetoothStartDiscovering();
+  content::RunAllPendingInMessageLoop();
+  EXPECT_TRUE(delegate->GetBluetoothDiscovering());
+  EXPECT_TRUE(delegate->IsBluetoothDiscovering());
+
+  delegate->BluetoothStopDiscovering();
+  content::RunAllPendingInMessageLoop();
+  EXPECT_FALSE(delegate->GetBluetoothDiscovering());
+  EXPECT_FALSE(delegate->IsBluetoothDiscovering());
+
+  // Turn Bluetooth off.
+  delegate->ToggleBluetooth();
+  content::RunAllPendingInMessageLoop();
+  EXPECT_FALSE(delegate->GetBluetoothEnabled());
+}
+
 }  // namespace chromeos