1#/usr/bin/env python3.4 2# 3# Copyright (C) 2016 The Android Open Source Project 4# 5# Licensed under the Apache License, Version 2.0 (the "License"); you may not 6# use this file except in compliance with the License. You may obtain a copy of 7# the License at 8# 9# http://www.apache.org/licenses/LICENSE-2.0 10# 11# Unless required by applicable law or agreed to in writing, software 12# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 13# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 14# License for the specific language governing permissions and limitations under 15# the License. 16""" 17This test script for GATT longevity tests. 18""" 19 20from acts.test_utils.bt.BluetoothBaseTest import BluetoothBaseTest 21from acts.test_utils.bt.GattConnectedBaseTest import GattConnectedBaseTest 22from acts.test_utils.bt.GattEnum import GattCharacteristic 23from acts.test_utils.bt.GattEnum import GattDescriptor 24from acts.test_utils.bt.GattEnum import GattEvent 25from acts.test_utils.bt.GattEnum import GattCbStrings 26from acts.test_utils.bt.GattEnum import GattConnectionPriority 27from acts.test_utils.bt.GattEnum import GattCharacteristicAttrLength 28from acts.test_utils.bt.GattEnum import MtuSize 29from acts.test_utils.bt.bt_gatt_utils import setup_gatt_mtu 30 31 32class GattLongevityTest(GattConnectedBaseTest): 33 longevity_iterations = 1100000 34 35 @BluetoothBaseTest.bt_test_wrap 36 def test_write_characteristic_no_resp_longevity(self): 37 """Longevity test write characteristic value 38 39 Longevity test to write characteristic value for 40 self.longevity_iteration times. This is to test the 41 integrity of written data and the robustness of central 42 and peripheral mode of the Android devices under test. 43 44 1. Central: write WRITABLE_CHAR_UUID characteristic with char_value 45 using write command. 46 2. Central: make sure write callback is called. 47 3. Peripheral: receive the written data. 48 4. Verify data written matches data received. 49 5. Repeat steps 1-4 self.longevity_iterations times. 50 51 Expected Result: 52 Verify that write command is properly delivered. 53 54 Returns: 55 Pass if True 56 Fail if False 57 58 TAGS: LE, GATT, Characteristic, Longevity 59 Priority: 0 60 """ 61 self.cen_ad.droid.gattClientRequestConnectionPriority( 62 self.bluetooth_gatt, 63 GattConnectionPriority.CONNECTION_PRIORITY_HIGH.value) 64 65 self.cen_ad.droid.gattClientCharacteristicSetWriteType( 66 self.bluetooth_gatt, self.discovered_services_index, 67 self.test_service_index, self.WRITABLE_CHAR_UUID, 68 GattCharacteristic.WRITE_TYPE_NO_RESPONSE.value) 69 70 for i in range(self.longevity_iterations): 71 self.log.debug("Iteration {} started.".format(i + 1)) 72 char_value = [] 73 for j in range(i, i + self.mtu - 3): 74 char_value.append(j % 256) 75 76 self.cen_ad.droid.gattClientCharacteristicSetValue( 77 self.bluetooth_gatt, self.discovered_services_index, 78 self.test_service_index, self.WRITABLE_CHAR_UUID, char_value) 79 80 self.cen_ad.droid.gattClientWriteCharacteristic( 81 self.bluetooth_gatt, self.discovered_services_index, 82 self.test_service_index, self.WRITABLE_CHAR_UUID) 83 84 # client shall not wait for server, get complete event right away 85 event = self._client_wait(GattEvent.CHAR_WRITE) 86 if event["data"]["Status"] != 0: 87 self.log.error("Write status should be 0") 88 return False 89 90 event = self._server_wait(GattEvent.CHAR_WRITE_REQ) 91 92 self.log.info("{} event found: {}".format( 93 GattCbStrings.CHAR_WRITE_REQ.value.format( 94 self.gatt_server_callback), event['data']['value'])) 95 request_id = event['data']['requestId'] 96 found_value = event['data']['value'] 97 if found_value != char_value: 98 self.log.info("Values didn't match. Found: {}, " 99 "Expected: {}".format(found_value, char_value)) 100 return False 101 102 return True 103