1 /* 2 * Copyright (C) 2016 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.cts.verifier.usb; 18 19 import androidx.annotation.NonNull; 20 import android.util.Log; 21 22 /** 23 * Utilities for the USB CTS verifier tests. 24 */ 25 public class Util { 26 private static final String LOG_TAG = Util.class.getSimpleName(); 27 28 /** 29 * Run a {@link Invokable} and expect a {@link Throwable}. 30 * 31 * @param r The {@link Invokable} to run 32 * @param expectedClass The expected {@link Throwable} type 33 */ 34 public static void runAndAssertException(@NonNull Invokable r, 35 @NonNull Class<? extends Throwable> expectedClass) throws Throwable { 36 try { 37 r.run(); 38 } catch (Throwable e) { 39 if (e.getClass().isAssignableFrom(expectedClass)) { 40 return; 41 } else { 42 Log.e(LOG_TAG, "Expected: " + expectedClass.getName() + ", got: " 43 + e.getClass().getName()); 44 throw e; 45 } 46 } 47 48 throw new AssertionError("No throwable thrown"); 49 } 50 51 52 /** 53 * A {@link Runnable} that can throw an {@link Throwable}. 54 */ 55 public interface Invokable { 56 /** 57 * Run the code that might cause an exception. 58 */ 59 void run() throws Throwable; 60 } 61 } 62
