1 /* 2 * Copyright (C) 2021 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.providers.media.util; 18 19 import static androidx.test.InstrumentationRegistry.getInstrumentation; 20 21 import android.support.test.uiautomator.UiDevice; 22 23 import androidx.annotation.NonNull; 24 25 import java.io.IOException; 26 import java.util.concurrent.TimeUnit; 27 import java.util.concurrent.TimeoutException; 28 29 public class TestUtils { 30 public static final String QUERY_TYPE = "com.android.providers.media.util.QUERY_TYPE"; 31 public static final String RUN_INFINITE_ACTIVITY = 32 "com.android.providers.media.util.RUN_INFINITE_ACTIVITY"; 33 34 private static final long POLLING_TIMEOUT_MILLIS = TimeUnit.SECONDS.toMillis(20); 35 private static final long POLLING_SLEEP_MILLIS = 100; 36 adoptShellPermission(@onNull String... perms)37 public static void adoptShellPermission(@NonNull String... perms) { 38 getInstrumentation().getUiAutomation().adoptShellPermissionIdentity(perms); 39 } 40 dropShellPermission()41 public static void dropShellPermission() { 42 getInstrumentation().getUiAutomation().dropShellPermissionIdentity(); 43 } 44 getPid(String packageName)45 public static int getPid(String packageName) 46 throws IOException, InterruptedException, TimeoutException { 47 UiDevice uiDevice = UiDevice.getInstance(getInstrumentation()); 48 for (int i = 0; i < POLLING_TIMEOUT_MILLIS / POLLING_SLEEP_MILLIS; i++) { 49 String pid = uiDevice.executeShellCommand("pidof " + packageName).trim(); 50 if (pid.length() > 0) { 51 return new Integer(pid); 52 } 53 Thread.sleep(POLLING_SLEEP_MILLIS); 54 } 55 56 throw new TimeoutException("Timed out waiting for pid"); 57 } 58 } 59