1/* 2 * Copyright (C) 2010 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 17package libcore.dalvik.system; 18 19import dalvik.system.CloseGuard; 20import java.io.Closeable; 21import java.io.IOException; 22import java.util.List; 23import java.util.concurrent.CopyOnWriteArrayList; 24import java.util.logging.ConsoleHandler; 25import java.util.logging.Handler; 26import java.util.logging.LogRecord; 27import java.util.logging.Logger; 28import junit.framework.Assert; 29import libcore.java.lang.ref.FinalizationTester; 30 31public final class CloseGuardTester implements Closeable { 32 33 private final List<LogRecord> logRecords = new CopyOnWriteArrayList<LogRecord>(); 34 private final Logger logger = Logger.getLogger(CloseGuard.class.getName()); 35 36 private final Handler logWatcher = new Handler() { 37 @Override public void close() {} 38 @Override public void flush() {} 39 @Override public void publish(LogRecord record) { 40 logRecords.add(record); 41 } 42 }; 43 44 public CloseGuardTester() { 45 /* 46 * Collect immediately before we start monitoring the CloseGuard logs. 47 * This lowers the chance that we'll report an unrelated leak. 48 */ 49 FinalizationTester.induceFinalization(); 50 logger.addHandler(logWatcher); 51 } 52 53 public void assertEverythingWasClosed() { 54 FinalizationTester.induceFinalization(); 55 56 if (!logRecords.isEmpty()) { 57 // print the log records with the output of this test 58 for (LogRecord leak : logRecords) { 59 new ConsoleHandler().publish(leak); 60 } 61 Assert.fail("CloseGuard detected unclosed resources!"); 62 } 63 } 64 65 @Override public void close() throws IOException { 66 Logger.getLogger(CloseGuard.class.getName()).removeHandler(logWatcher); 67 } 68} 69