1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not 5 * use this file except in compliance with the License. You may obtain a copy of 6 * 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, WITHOUT 12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 13 * License for the specific language governing permissions and limitations under 14 * the License. 15 */ 16 package com.android.launcher3.util.rule; 17 18 import android.content.ComponentName; 19 import android.content.pm.ActivityInfo; 20 import android.os.ParcelFileDescriptor; 21 import android.support.test.InstrumentationRegistry; 22 23 import org.junit.rules.TestRule; 24 import org.junit.runner.Description; 25 import org.junit.runners.model.Statement; 26 27 import java.io.FileInputStream; 28 import java.io.IOException; 29 30 /** 31 * Test rule which executes a shell command at the start of the test. 32 */ 33 public class ShellCommandRule implements TestRule { 34 35 private final String mCmd; 36 ShellCommandRule(String cmd)37 public ShellCommandRule(String cmd) { 38 mCmd = cmd; 39 } 40 41 @Override apply(Statement base, Description description)42 public Statement apply(Statement base, Description description) { 43 return new MyStatement(base, mCmd); 44 } 45 runShellCommand(String command)46 public static void runShellCommand(String command) throws IOException { 47 ParcelFileDescriptor pfd = InstrumentationRegistry.getInstrumentation().getUiAutomation() 48 .executeShellCommand(command); 49 50 // Read the input stream fully. 51 FileInputStream fis = new ParcelFileDescriptor.AutoCloseInputStream(pfd); 52 while (fis.read() != -1); 53 fis.close(); 54 } 55 56 private static class MyStatement extends Statement { 57 private final Statement mBase; 58 private final String mCmd; 59 MyStatement(Statement base, String cmd)60 public MyStatement(Statement base, String cmd) { 61 mBase = base; 62 mCmd = cmd; 63 } 64 65 @Override evaluate()66 public void evaluate() throws Throwable { 67 runShellCommand(mCmd); 68 mBase.evaluate(); 69 } 70 } 71 72 /** 73 * Grants the launcher permission to bind widgets. 74 */ grandWidgetBind()75 public static ShellCommandRule grandWidgetBind() { 76 return new ShellCommandRule("appwidget grantbind --package " 77 + InstrumentationRegistry.getTargetContext().getPackageName()); 78 } 79 80 /** 81 * Sets the target launcher as default launcher. 82 */ setDefaultLauncher()83 public static ShellCommandRule setDefaultLauncher() { 84 ActivityInfo launcher = InstrumentationRegistry.getTargetContext().getPackageManager() 85 .queryIntentActivities(LauncherActivityRule.getHomeIntent(), 0).get(0) 86 .activityInfo; 87 return new ShellCommandRule("cmd package set-home-activity " + 88 new ComponentName(launcher.packageName, launcher.name).flattenToString()); 89 } 90 } 91