Merge "Blueberry: Migrate GattNotifyTest and GattConnectTest to Mobly" am:... (ec07cb52) · Commits · e / os / android_packages_modules_Bluetooth

system/blueberry/tests/gd_sl4a/lib/bt_constants.py

+0 −269

Original line number	Diff line number	Diff line
		@@ -60,7 +60,6 @@ adv_succ = "BleAdvertise{}onSuccess"
		bluetooth_off = "BluetoothStateChangedOff"
		bluetooth_on = "BluetoothStateChangedOn"
		mtu_changed = "GattConnect{}onMtuChanged"
		gatt_connection_state_change = "GattConnect{}onConnectionStateChange"
		advertising_set_started = "AdvertisingSet{}onAdvertisingSetStarted"
		advertising_set_stopped = "AdvertisingSet{}onAdvertisingSetStopped"
		advertising_set_on_own_address_read = "AdvertisingSet{}onOwnAddressRead"
		@@ -261,274 +260,6 @@ ble_advertise_error_code = {

		### Bluetooth Low Energy Constants End ###

		### Bluetooth GATT Constants Begin ###

		# Gatt Callback error messages
		gatt_cb_err = {
		"char_write_req_err": "Characteristic Write Request event not found. Expected {}",
		"char_write_err": "Characteristic Write event not found. Expected {}",
		"desc_write_req_err": "Descriptor Write Request event not found. Expected {}",
		"desc_write_err": "Descriptor Write event not found. Expected {}",
		"char_read_err": "Characteristic Read event not found. Expected {}",
		"char_read_req_err": "Characteristic Read Request not found. Expected {}",
		"desc_read_err": "Descriptor Read event not found. Expected {}",
		"desc_read_req_err": "Descriptor Read Request event not found. Expected {}",
		"rd_remote_rssi_err": "Read Remote RSSI event not found. Expected {}",
		"gatt_serv_disc_err": "GATT Services Discovered event not found. Expected {}",
		"serv_added_err": "Service Added event not found. Expected {}",
		"mtu_changed_err": "MTU Changed event not found. Expected {}",
		"mtu_serv_changed_err": "MTU Server Changed event not found. Expected {}",
		"gatt_conn_changed_err": "GATT Connection Changed event not found. Expected {}",
		"char_change_err": "GATT Characteristic Changed event not fond. Expected {}",
		"phy_read_err": "Phy Read event not fond. Expected {}",
		"phy_update_err": "Phy Update event not fond. Expected {}",
		"exec_write_err": "GATT Execute Write event not found. Expected {}"
		}

		# GATT callback strings as defined in GattClientFacade.java and
		# GattServerFacade.java implemented callbacks.
		gatt_cb_strings = {
		"char_write_req": "GattServer{}onCharacteristicWriteRequest",
		"exec_write": "GattServer{}onExecuteWrite",
		"char_write": "GattConnect{}onCharacteristicWrite",
		"desc_write_req": "GattServer{}onDescriptorWriteRequest",
		"desc_write": "GattConnect{}onDescriptorWrite",
		"char_read": "GattConnect{}onCharacteristicRead",
		"char_read_req": "GattServer{}onCharacteristicReadRequest",
		"desc_read": "GattConnect{}onDescriptorRead",
		"desc_read_req": "GattServer{}onDescriptorReadRequest",
		"rd_remote_rssi": "GattConnect{}onReadRemoteRssi",
		"gatt_serv_disc": "GattConnect{}onServicesDiscovered",
		"serv_added": "GattServer{}onServiceAdded",
		"mtu_changed": "GattConnect{}onMtuChanged",
		"mtu_serv_changed": "GattServer{}onMtuChanged",
		"gatt_conn_change": "GattConnect{}onConnectionStateChange",
		"char_change": "GattConnect{}onCharacteristicChanged",
		"phy_read": "GattConnect{}onPhyRead",
		"phy_update": "GattConnect{}onPhyUpdate",
		"serv_phy_read": "GattServer{}onPhyRead",
		"serv_phy_update": "GattServer{}onPhyUpdate",
		}

		# GATT event dictionary of expected callbacks and errors.
		gatt_event = {
		"char_write_req": {
		"evt": gatt_cb_strings["char_write_req"],
		"err": gatt_cb_err["char_write_req_err"]
		},
		"exec_write": {
		"evt": gatt_cb_strings["exec_write"],
		"err": gatt_cb_err["exec_write_err"]
		},
		"char_write": {
		"evt": gatt_cb_strings["char_write"],
		"err": gatt_cb_err["char_write_err"]
		},
		"desc_write_req": {
		"evt": gatt_cb_strings["desc_write_req"],
		"err": gatt_cb_err["desc_write_req_err"]
		},
		"desc_write": {
		"evt": gatt_cb_strings["desc_write"],
		"err": gatt_cb_err["desc_write_err"]
		},
		"char_read": {
		"evt": gatt_cb_strings["char_read"],
		"err": gatt_cb_err["char_read_err"]
		},
		"char_read_req": {
		"evt": gatt_cb_strings["char_read_req"],
		"err": gatt_cb_err["char_read_req_err"]
		},
		"desc_read": {
		"evt": gatt_cb_strings["desc_read"],
		"err": gatt_cb_err["desc_read_err"]
		},
		"desc_read_req": {
		"evt": gatt_cb_strings["desc_read_req"],
		"err": gatt_cb_err["desc_read_req_err"]
		},
		"rd_remote_rssi": {
		"evt": gatt_cb_strings["rd_remote_rssi"],
		"err": gatt_cb_err["rd_remote_rssi_err"]
		},
		"gatt_serv_disc": {
		"evt": gatt_cb_strings["gatt_serv_disc"],
		"err": gatt_cb_err["gatt_serv_disc_err"]
		},
		"serv_added": {
		"evt": gatt_cb_strings["serv_added"],
		"err": gatt_cb_err["serv_added_err"]
		},
		"mtu_changed": {
		"evt": gatt_cb_strings["mtu_changed"],
		"err": gatt_cb_err["mtu_changed_err"]
		},
		"gatt_conn_change": {
		"evt": gatt_cb_strings["gatt_conn_change"],
		"err": gatt_cb_err["gatt_conn_changed_err"]
		},
		"char_change": {
		"evt": gatt_cb_strings["char_change"],
		"err": gatt_cb_err["char_change_err"]
		},
		"phy_read": {
		"evt": gatt_cb_strings["phy_read"],
		"err": gatt_cb_err["phy_read_err"]
		},
		"phy_update": {
		"evt": gatt_cb_strings["phy_update"],
		"err": gatt_cb_err["phy_update_err"]
		},
		"serv_phy_read": {
		"evt": gatt_cb_strings["serv_phy_read"],
		"err": gatt_cb_err["phy_read_err"]
		},
		"serv_phy_update": {
		"evt": gatt_cb_strings["serv_phy_update"],
		"err": gatt_cb_err["phy_update_err"]
		}
		}

		# Matches constants of connection states defined in BluetoothGatt.java
		gatt_connection_state = {"disconnected": 0, "connecting": 1, "connected": 2, "disconnecting": 3, "closed": 4}

		# Matches constants of Bluetooth GATT Characteristic values as defined
		# in BluetoothGattCharacteristic.java
		gatt_characteristic = {
		"property_broadcast": 0x01,
		"property_read": 0x02,
		"property_write_no_response": 0x04,
		"property_write": 0x08,
		"property_notify": 0x10,
		"property_indicate": 0x20,
		"property_signed_write": 0x40,
		"property_extended_props": 0x80,
		"permission_read": 0x01,
		"permission_read_encrypted": 0x02,
		"permission_read_encrypted_mitm": 0x04,
		"permission_write": 0x10,
		"permission_write_encrypted": 0x20,
		"permission_write_encrypted_mitm": 0x40,
		"permission_write_signed": 0x80,
		"permission_write_signed_mitm": 0x100,
		"write_type_default": 0x02,
		"write_type_no_response": 0x01,
		"write_type_signed": 0x04,
		}

		# Matches constants of Bluetooth GATT Characteristic values as defined
		# in BluetoothGattDescriptor.java
		gatt_descriptor = {
		"enable_notification_value": [0x01, 0x00],
		"enable_indication_value": [0x02, 0x00],
		"disable_notification_value": [0x00, 0x00],
		"permission_read": 0x01,
		"permission_read_encrypted": 0x02,
		"permission_read_encrypted_mitm": 0x04,
		"permission_write": 0x10,
		"permission_write_encrypted": 0x20,
		"permission_write_encrypted_mitm": 0x40,
		"permission_write_signed": 0x80,
		"permission_write_signed_mitm": 0x100
		}

		# https://www.bluetooth.com/specifications/gatt/descriptors
		gatt_char_desc_uuids = {
		"char_ext_props": '00002900-0000-1000-8000-00805f9b34fb',
		"char_user_desc": '00002901-0000-1000-8000-00805f9b34fb',
		"client_char_cfg": '00002902-0000-1000-8000-00805f9b34fb',
		"server_char_cfg": '00002903-0000-1000-8000-00805f9b34fb',
		"char_fmt_uuid": '00002904-0000-1000-8000-00805f9b34fb',
		"char_agreg_fmt": '00002905-0000-1000-8000-00805f9b34fb',
		"char_valid_range": '00002906-0000-1000-8000-00805f9b34fb',
		"external_report_reference": '00002907-0000-1000-8000-00805f9b34fb',
		"report_reference": '00002908-0000-1000-8000-00805f9b34fb'
		}

		# https://www.bluetooth.com/specifications/gatt/characteristics
		gatt_char_types = {
		"device_name": '00002a00-0000-1000-8000-00805f9b34fb',
		"appearance": '00002a01-0000-1000-8000-00805f9b34fb',
		"peripheral_priv_flag": '00002a02-0000-1000-8000-00805f9b34fb',
		"reconnection_address": '00002a03-0000-1000-8000-00805f9b34fb',
		"peripheral_pref_conn": '00002a04-0000-1000-8000-00805f9b34fb',
		"service_changed": '00002a05-0000-1000-8000-00805f9b34fb',
		"system_id": '00002a23-0000-1000-8000-00805f9b34fb',
		"model_number_string": '00002a24-0000-1000-8000-00805f9b34fb',
		"serial_number_string": '00002a25-0000-1000-8000-00805f9b34fb',
		"firmware_revision_string": '00002a26-0000-1000-8000-00805f9b34fb',
		"hardware_revision_string": '00002a27-0000-1000-8000-00805f9b34fb',
		"software_revision_string": '00002a28-0000-1000-8000-00805f9b34fb',
		"manufacturer_name_string": '00002a29-0000-1000-8000-00805f9b34fb',
		"pnp_id": '00002a50-0000-1000-8000-00805f9b34fb',
		}

		# Matches constants of Bluetooth GATT Characteristic values as defined
		# in BluetoothGattCharacteristic.java
		gatt_characteristic_value_format = {
		"string": 0x1,
		"byte": 0x2,
		"sint8": 0x21,
		"uint8": 0x11,
		"sint16": 0x22,
		"unit16": 0x12,
		"sint32": 0x24,
		"uint32": 0x14
		}

		# Matches constants of Bluetooth Gatt Service types as defined in
		# BluetoothGattService.java
		gatt_service_types = {"primary": 0, "secondary": 1}

		# Matches constants of Bluetooth Gatt Connection Priority values as defined in
		# BluetoothGatt.java
		gatt_connection_priority = {"balanced": 0, "high": 1, "low_power": 2}

		# Min and max MTU values
		gatt_mtu_size = {"min": 23, "max": 217}

		# Gatt Characteristic attribute lengths
		gatt_characteristic_attr_length = {"attr_1": 1, "attr_2": 3, "attr_3": 15}

		# Matches constants of Bluetooth Gatt operations status as defined in
		# BluetoothGatt.java
		gatt_status = {"success": 0, "failure": 0x101}

		# Matches constants of Bluetooth transport values as defined in
		# BluetoothDevice.java
		gatt_transport = {"auto": 0x00, "bredr": 0x01, "le": 0x02}

		# Matches constants of Bluetooth physical channeling values as defined in
		# BluetoothDevice.java
		gatt_phy = {"1m": 1, "2m": 2, "le_coded": 3}

		# Matches constants of Bluetooth physical channeling bitmask values as defined
		# in BluetoothDevice.java
		gatt_phy_mask = {"1m_mask": 1, "2m_mask": 2, "coded_mask": 4}

		# Values as defiend in the Bluetooth GATT specification
		gatt_server_responses = {
		"GATT_SUCCESS": 0x0,
		"GATT_FAILURE": 0x1,
		"GATT_READ_NOT_PERMITTED": 0x2,
		"GATT_WRITE_NOT_PERMITTED": 0x3,
		"GATT_INVALID_PDU": 0x4,
		"GATT_INSUFFICIENT_AUTHENTICATION": 0x5,
		"GATT_REQUEST_NOT_SUPPORTED": 0x6,
		"GATT_INVALID_OFFSET": 0x7,
		"GATT_INSUFFICIENT_AUTHORIZATION": 0x8,
		"GATT_INVALID_ATTRIBUTE_LENGTH": 0xd,
		"GATT_INSUFFICIENT_ENCRYPTION": 0xf,
		"GATT_CONNECTION_CONGESTED": 0x8f,
		"GATT_13_ERR": 0x13,
		"GATT_12_ERR": 0x12,
		"GATT_0C_ERR": 0x0C,
		"GATT_16": 0x16
		}

		### Bluetooth GATT Constants End ###

		### Chameleon Constants Begin ###

		# Chameleon audio bits per sample.

system/blueberry/tests/gd_sl4a/lib/gd_sl4a_base_test.py

+6 −19

Original line number	Diff line number	Diff line
		@@ -26,11 +26,9 @@ from mobly.base_test import BaseTestClass
		from mobly.controllers.android_device_lib.adb import AdbError
		from mobly.controllers import android_device
		from mobly.controllers.android_device import MOBLY_CONTROLLER_CONFIG_NAME as ANDROID_DEVICE_COFNIG_NAME
		from mobly.controllers.android_device_lib.jsonrpc_client_base import \
		AppRestoreConnectionError
		from mobly.controllers.android_device_lib.services.sl4a_service import Sl4aService
		import mobly.controllers.android_device_lib.sl4a_client as sl4a_client

		from blueberry.utils.mobly_sl4a_utils import setup_sl4a
		from blueberry.utils.mobly_sl4a_utils import teardown_sl4a
		from blueberry.tests.gd.cert.context import get_current_context
		from blueberry.tests.gd.cert.gd_device import MOBLY_CONTROLLER_CONFIG_NAME as GD_DEVICE_CONFIG_NAME
		from blueberry.tests.gd_sl4a.lib.ble_lib import enable_bluetooth, disable_bluetooth, BleLib
		@@ -54,25 +52,14 @@ class GdSl4aBaseTestClass(BaseTestClass):
		self.cert = self.gd_devices[0]

		# Parse and construct Android device objects
		self.android_devices = self.register_controller(android_device, required=True)
		server_port = int(self.controller_configs[ANDROID_DEVICE_COFNIG_NAME][0]['server_port'])
		forwarded_port = int(self.controller_configs[ANDROID_DEVICE_COFNIG_NAME][0]['forwarded_port'])
		sl4a_client._DEVICE_SIDE_PORT = server_port
		sl4a_client._APP_START_WAIT_TIME = 0.5
		self.android_devices = self.register_controller(android_device, required=True)
		self.dut = self.android_devices[0]
		self.dut.services.register('sl4a', Sl4aService, start_service=False)
		try:
		self.dut.sl4a.start()
		except AppRestoreConnectionError:
		pass
		try:
		self.dut.sl4a.clear_host_port()
		except AdbError:
		pass
		sl4a_client._APP_START_WAIT_TIME = 2 * 60
		self.dut.sl4a.restore_app_connection(port=forwarded_port)
		setup_sl4a(self.dut, server_port, forwarded_port)

		# Enable full btsnoop log
		self.dut.adb.root()
		self.dut.adb.shell("setprop persist.bluetooth.btsnooplogmode full")
		getprop_result = self.dut.adb.shell("getprop persist.bluetooth.btsnooplogmode") == "full"
		if not getprop_result:
		@@ -81,7 +68,7 @@ class GdSl4aBaseTestClass(BaseTestClass):
		self.ble = BleLib(dut=self.dut)

		def teardown_class(self):
		pass
		teardown_sl4a(self.dut)

		def setup_test(self):
		self.cert.rootservice.StartStack(

system/blueberry/tests/sl4a_sl4a/gatt/gatt_connect_test.py

+975 −110

File changed.

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system/blueberry/tests/sl4a_sl4a/gatt/gatt_connect_with_irk_test.py

0 → 100644

+148 −0

Original line number	Diff line number	Diff line
		#!/usr/bin/env python3
		#
		# Copyright 2021 - The Android Open Source Project
		#
		# Licensed under the Apache License, Version 2.0 (the "License");
		# you may not use this file except in compliance with the License.
		# You may obtain a copy of the License at
		#
		# http://www.apache.org/licenses/LICENSE-2.0
		#
		# Unless required by applicable law or agreed to in writing, software
		# distributed under the License is distributed on an "AS IS" BASIS,
		# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		# See the License for the specific language governing permissions and
		# limitations under the License.

		import io
		import logging
		import os
		import queue

		from blueberry.facade import common_pb2 as common
		from blueberry.tests.gd.cert.context import get_current_context
		from blueberry.tests.gd.cert.truth import assertThat
		from blueberry.tests.gd_sl4a.lib.ble_lib import generate_ble_advertise_objects
		from blueberry.tests.gd_sl4a.lib.ble_lib import generate_ble_scan_objects
		from blueberry.tests.gd_sl4a.lib.bt_constants import adv_succ
		from blueberry.tests.gd_sl4a.lib.bt_constants import ble_address_types
		from blueberry.tests.gd_sl4a.lib.bt_constants import ble_advertise_settings_modes
		from blueberry.tests.gd_sl4a.lib.bt_constants import ble_scan_settings_modes
		from blueberry.tests.gd_sl4a.lib.bt_constants import scan_result
		from blueberry.tests.sl4a_sl4a.lib import sl4a_sl4a_base_test
		from blueberry.utils.bt_gatt_constants import GattCallbackString
		from blueberry.utils.bt_gatt_constants import GattTransport
		from mobly import test_runner
		from mobly.controllers.android_device_lib.adb import AdbError


		class GattConnectWithIrkTest(sl4a_sl4a_base_test.Sl4aSl4aBaseTestClass):

		def setup_class(self):
		super().setup_class()
		self.default_timeout = 10 # seconds

		def setup_test(self):
		super().setup_test()

		def teardown_test(self):
		super().teardown_test()

		def _wait_for_event(self, expected_event_name, device):
		try:
		event_info = device.ed.pop_event(expected_event_name, self.default_timeout)
		logging.info(event_info)
		except queue.Empty as error:
		logging.error("Failed to find event: %s", expected_event_name)
		return False
		return True

		def _wait_for_scan_result_event(self, expected_event_name, device):
		try:
		event_info = device.ed.pop_event(expected_event_name, self.default_timeout)
		except queue.Empty as error:
		logging.error("Could not find scan result event: %s", expected_event_name)
		return None
		return event_info['data']['Result']['deviceInfo']['address']

		def _get_cert_public_address_and_irk_from_bt_config(self):
		# Pull IRK from SL4A cert side to pass in from SL4A DUT side when scanning
		bt_config_file_path = os.path.join(get_current_context().get_full_output_path(),
		"DUT_%s_bt_config.conf" % self.cert.serial)
		try:
		self.cert.adb.pull(["/data/misc/bluedroid/bt_config.conf", bt_config_file_path])
		except AdbError as error:
		logging.error("Failed to pull SL4A cert BT config")
		return False
		logging.debug("Reading SL4A cert BT config")
		with io.open(bt_config_file_path) as f:
		for line in f.readlines():
		stripped_line = line.strip()
		if (stripped_line.startswith("Address")):
		address_fields = stripped_line.split(' ')
		# API currently requires public address to be capitalized
		address = address_fields[2].upper()
		logging.debug("Found cert address: %s" % address)
		continue
		if (stripped_line.startswith("LE_LOCAL_KEY_IRK")):
		irk_fields = stripped_line.split(' ')
		irk = irk_fields[2]
		logging.debug("Found cert IRK: %s" % irk)
		continue

		return address, irk

		def test_scan_connect_unbonded_device_public_address_with_irk(self):
		# Set up SL4A cert side to advertise
		logging.info("Starting advertising")
		self.cert.sl4a.bleSetAdvertiseSettingsIsConnectable(True)
		self.cert.sl4a.bleSetAdvertiseDataIncludeDeviceName(True)
		self.cert.sl4a.bleSetAdvertiseSettingsAdvertiseMode(ble_advertise_settings_modes['low_latency'])
		self.cert.sl4a.bleSetAdvertiseSettingsOwnAddressType(common.RANDOM_DEVICE_ADDRESS)
		advertise_callback, advertise_data, advertise_settings = generate_ble_advertise_objects(self.cert.sl4a)
		self.cert.sl4a.bleStartBleAdvertising(advertise_callback, advertise_data, advertise_settings)

		# Wait for SL4A cert to start advertising
		assertThat(self._wait_for_event(adv_succ.format(advertise_callback), self.cert)).isTrue()
		logging.info("Advertising started")

		# Pull IRK from SL4A cert side to pass in from SL4A DUT side when scanning
		cert_public_address, irk = self._get_cert_public_address_and_irk_from_bt_config()

		# Set up SL4A DUT side to scan
		addr_type = ble_address_types["public"]
		logging.info("Start scanning for PUBLIC_ADDRESS %s with address type %d and IRK %s" % (cert_public_address,
		addr_type, irk))
		self.dut.sl4a.bleSetScanSettingsScanMode(ble_scan_settings_modes['low_latency'])
		self.dut.sl4a.bleSetScanSettingsLegacy(False)
		filter_list, scan_settings, scan_callback = generate_ble_scan_objects(self.dut.sl4a)
		expected_event_name = scan_result.format(scan_callback)

		# Start scanning on SL4A DUT
		self.dut.sl4a.bleSetScanFilterDeviceAddressTypeAndIrkHexString(cert_public_address, int(addr_type), irk)
		self.dut.sl4a.bleBuildScanFilter(filter_list)
		self.dut.sl4a.bleStartBleScan(filter_list, scan_settings, scan_callback)
		logging.info("Started scanning")

		# Verify that scan result is received on SL4A DUT
		mac_address = self._wait_for_scan_result_event(expected_event_name, self.dut)
		assertThat(mac_address).isNotNone()
		logging.info("Filter advertisement with address {}".format(mac_address))

		# Stop scanning and try to connect GATT
		self.dut.sl4a.bleStopBleScan(scan_callback)
		gatt_callback = self.dut.sl4a.gattCreateGattCallback()
		bluetooth_gatt = self.dut.sl4a.gattClientConnectGatt(gatt_callback, mac_address, False,
		GattTransport.TRANSPORT_LE, False, None)
		assertThat(bluetooth_gatt).isNotNone()

		# Verify that GATT connect event occurs on SL4A DUT
		expected_event_name = GattCallbackString.GATT_CONN_CHANGE.format(gatt_callback)
		assertThat(self._wait_for_event(expected_event_name, self.dut)).isTrue()

		# Test over
		self.cert.sl4a.bleStopBleAdvertising(advertise_callback)


		if __name__ == '__main__':
		test_runner.main()

system/blueberry/tests/sl4a_sl4a/gatt/gatt_notify_test.py

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Original line number	Diff line number	Diff line
		#!/usr/bin/env python3
		#
		# Copyright (C) 2016 The Android Open Source Project
		#
		# Licensed under the Apache License, Version 2.0 (the "License"); you may not
		# use this file except in compliance with the License. You may obtain a copy of
		# the License at
		#
		# http://www.apache.org/licenses/LICENSE-2.0
		#
		# Unless required by applicable law or agreed to in writing, software
		# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
		# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
		# License for the specific language governing permissions and limitations under
		# the License.
		"""
		This test script exercises GATT notify/indicate procedures.

		Original location:
		tools/test/connectivity/acts_tests/tests/google/ble/gatt/GattNotifyTest.py
		"""

		from blueberry.tests.gd.cert.test_decorators import test_tracker_info

		from blueberry.tests.gd.cert.truth import assertThat
		from blueberry.tests.sl4a_sl4a.lib import gatt_connected_base_test
		from blueberry.utils.bt_gatt_constants import GattCharDesc
		from blueberry.utils.bt_gatt_constants import GattDescriptor
		from blueberry.utils.bt_gatt_constants import GattEvent
		from mobly import test_runner


		class GattNotifyTest(gatt_connected_base_test.GattConnectedBaseTest):

		@test_tracker_info(uuid='e0ba60af-c1f2-4516-a5d5-89e2def0c757')
		def test_notify_char(self):
		"""Test notify characteristic value.

		Test GATT notify characteristic value.

		Steps:
		1. Central: write CCC - register for notifications.
		2. Peripheral: receive CCC modification.
		3. Peripheral: send characteristic notification.
		4. Central: receive notification, verify it's conent matches what was
		sent

		Expected Result:
		Verify that notification registration and delivery works.

		Returns:
		Pass if True
		Fail if False

		TAGS: LE, GATT, Characteristic
		Priority: 0
		"""
		# write CCC descriptor to enable notifications
		self.central.sl4a.gattClientDescriptorSetValue(
		self.bluetooth_gatt, self.discovered_services_index, self.test_service_index, self.NOTIFIABLE_CHAR_UUID,
		GattCharDesc.GATT_CLIENT_CHARAC_CFG_UUID, GattDescriptor.ENABLE_NOTIFICATION_VALUE)

		self.central.sl4a.gattClientWriteDescriptor(self.bluetooth_gatt, self.discovered_services_index,
		self.test_service_index, self.NOTIFIABLE_CHAR_UUID,
		GattCharDesc.GATT_CLIENT_CHARAC_CFG_UUID)

		# enable notifications in app
		self.central.sl4a.gattClientSetCharacteristicNotification(self.bluetooth_gatt, self.discovered_services_index,
		self.test_service_index, self.NOTIFIABLE_CHAR_UUID,
		True)

		event = self._server_wait(GattEvent.DESC_WRITE_REQ)

		request_id = event['data']['requestId']
		bt_device_id = 0
		status = 0
		# confirm notification registration was successful
		self.peripheral.sl4a.gattServerSendResponse(self.gatt_server, bt_device_id, request_id, status, 0, [])
		# wait for client to get response
		event = self._client_wait(GattEvent.DESC_WRITE)

		# set notified value
		notified_value = [1, 5, 9, 7, 5, 3, 6, 4, 8, 2]
		self.peripheral.sl4a.gattServerCharacteristicSetValue(self.notifiable_char_index, notified_value)

		# send notification
		self.peripheral.sl4a.gattServerNotifyCharacteristicChanged(self.gatt_server, bt_device_id,
		self.notifiable_char_index, False)

		# wait for client to receive the notification
		event = self._client_wait(GattEvent.CHAR_CHANGE)
		assertThat(event["data"]["CharacteristicValue"]).isEqualTo(notified_value)

		return True


		if __name__ == '__main__':
		test_runner.main()