1 /* 2 * Copyright (c) 2013, 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 package test.java.util.LinkedHashMap; 24 25 import java.util.*; 26 27 import org.testng.Assert; 28 import org.testng.annotations.Test; 29 30 /** 31 * @test 32 * @bug 8030016 33 * @summary computeIfAbsent would generate spurious access 34 */ 35 public class ComputeIfAbsentAccessOrder { 36 37 @Test testComputeIfAbsent()38 public void testComputeIfAbsent() { 39 LinkedHashMap<String,Object> map = new LinkedHashMap<>(2, 0.75f, true); 40 map.put("first", null); 41 map.put("second", null); 42 43 map.computeIfAbsent("first", l -> null); // should do nothing 44 45 Optional<String> key = map.keySet().stream() 46 .findFirst(); 47 Assert.assertFalse(key.isEmpty()); 48 Assert.assertTrue("first".equals(key.get())); 49 } 50 }