1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.game.qualification.test; 18 19 import static org.junit.Assert.assertTrue; 20 21 import com.android.tradefed.device.DeviceNotAvailableException; 22 import com.android.tradefed.testtype.DeviceJUnit4ClassRunner; 23 import com.android.tradefed.testtype.junit4.BaseHostJUnit4Test; 24 25 import org.junit.Test; 26 import org.junit.runner.RunWith; 27 28 @RunWith(DeviceJUnit4ClassRunner.class) 29 public class DeviceConfigurationTest extends BaseHostJUnit4Test { 30 /** 31 * CONFIG_HZ must be >= 250 to ensure system responsiveness. 32 */ 33 @Test testConfigHzHighEnough()34 public void testConfigHzHighEnough() 35 throws DeviceNotAvailableException { 36 37 /* Insist on the kernel tick rate being at least 250Hz. */ 38 39 String output = getDevice().executeShellCommand("gzip -dc /proc/config.gz | grep CONFIG_HZ="); 40 assertTrue(output.contains("CONFIG_HZ=")); 41 int tickRate = Integer.parseInt(output.split("\n")[0].split("=")[1]); 42 assertTrue("Kernel tick rate is " + tickRate + " but certification requires at least 250", tickRate >= 250); 43 } 44 } 45