def run_tests(adb_location, serial_number, package_name, test_runner_name,
enable_coverage):
u'''
Run tests and output result as XML.
Parameters:
adb_location : Location of adb.
serial_number : Serial number of device or emulator. None is OK.
test_runner_name : Name of test runner. None is OK.
enable_coverage : Whether coverage measuring is enabled.
Return:
ElementTree of result. None if tests did not run.
'''
AndroidDebugBridge.init(False)
connecting_event = DeviceConnectingEvent(serial_number)
AndroidDebugBridge.addDeviceChangeListener(connecting_event)
debug_bridge = AndroidDebugBridge.createBridge(adb_location, False)
connecting_event.wait()
if not debug_bridge.isConnected():
print >> sys.stderr, u'bridge is not connected.'
return None
device = get_device(serial_number, debug_bridge)
if not device:
print >> sys.stderr, u'There is not device.'
return None
test_runner = RemoteAndroidTestRunner(package_name, test_runner_name,
device)
test_runner.setCoverage(enable_coverage)
formatter = TestResultXmlFormatter(device.getProperties())
test_runner.run(formatter)
return formatter.get_result()
