1#!/usr/bin/env python 2# 3# Copyright (C) 2017 The Android Open Source Project 4# 5# Licensed under the Apache License, Version 2.0 (the "License"); 6# you may not use this file except in compliance with the License. 7# You may obtain a copy of 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, 13# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14# See the License for the specific language governing permissions and 15# limitations under the License. 16# 17 18import logging 19 20from vts.runners.host import asserts 21from vts.runners.host import base_test 22from vts.runners.host import const 23from vts.runners.host import test_runner 24from vts.utils.python.controllers import android_device 25from vts.utils.python.file import target_file_utils 26 27HWBINDER_PATH = "/dev/hwbinder" 28 29 30class VtsKernelHwBinderTest(base_test.BaseTestClass): 31 """Test case to validate existence of hwbinder node. 32 """ 33 34 def setUpClass(self): 35 self.dut = self.android_devices[0] 36 self.shell = self.dut.shell 37 38 def testHwbinderExistence(self): 39 """Checks that hwbinder node exists. 40 """ 41 logging.info("Testing existence of %s", HWBINDER_PATH) 42 asserts.assertTrue( 43 target_file_utils.Exists(HWBINDER_PATH, self.shell), 44 "%s: File does not exist." % HWBINDER_PATH) 45 46 try: 47 permissions = target_file_utils.GetPermission( 48 HWBINDER_PATH, self.shell) 49 asserts.assertTrue( 50 target_file_utils.IsReadWrite(permissions), 51 "%s: File has invalid permissions (%s)" % (HWBINDER_PATH, 52 permissions)) 53 except (ValueError, IOError) as e: 54 asserts.fail("Failed to assert permissions: %s" % str(e)) 55 56 57if __name__ == "__main__": 58 test_runner.main() 59