1 /* 2 * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 import java.nio.ByteBuffer; 25 import java.util.Base64; 26 27 /** 28 * @test 29 * @bug 8210583 30 * @summary Tests Base64.Encoder.encode/Decoder.decode for the large size 31 * of resulting bytes which can not be allocated 32 * @requires os.maxMemory >= 6g 33 * @run main/othervm -Xms4g -Xmx6g TestEncodingDecodingLength 34 * 35 */ 36 37 public class TestEncodingDecodingLength { 38 39 public static void main(String[] args) { 40 int size = Integer.MAX_VALUE - 2; 41 byte[] inputBytes = new byte[size]; 42 byte[] outputBytes = new byte[size]; 43 44 // Check encoder with large array length 45 Base64.Encoder encoder = Base64.getEncoder(); 46 checkOOM("encode(byte[])", () -> encoder.encode(inputBytes)); 47 checkIAE("encode(byte[] byte[])", () -> encoder.encode(inputBytes, outputBytes)); 48 checkOOM("encodeToString(byte[])", () -> encoder.encodeToString(inputBytes)); 49 checkOOM("encode(ByteBuffer)", () -> encoder.encode(ByteBuffer.allocate(size))); 50 51 // Check decoder with large array length 52 Base64.Decoder decoder = Base64.getDecoder(); 53 checkOOM("decode(byte[])", () -> decoder.decode(inputBytes)); 54 checkIAE("decode(byte[], byte[])", () -> decoder.decode(inputBytes, outputBytes)); 55 checkOOM("decode(ByteBuffer)", () -> decoder.decode(ByteBuffer.allocate(size))); 56 } 57 58 private static final void checkOOM(String methodName, Runnable r) { 59 try { 60 r.run(); 61 throw new RuntimeException("OutOfMemoryError should have been thrown by" + methodName); 62 } catch (OutOfMemoryError er) {} 63 } 64 65 private static final void checkIAE(String methodName, Runnable r) { 66 try { 67 r.run(); 68 throw new RuntimeException("IllegalArgumentException should have been thrown by" + methodName); 69 } catch (IllegalArgumentException iae) {} 70 } 71 } 72