1 /* 2 * Copyright (c) 2005, 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 /* 25 * @test 26 * @bug 4904074 6328220 6330389 8308167 27 * @modules java.base/jdk.internal.util 28 * @summary Basic tests for several Map.Entry implementations 29 * @author Martin Buchholz 30 */ 31 32 package test.java.util.AbstractMap; 33 34 import java.util.Map; 35 import jdk.internal.util.NullableKeyValueHolder; 36 37 import static java.util.AbstractMap.SimpleEntry; 38 import static java.util.AbstractMap.SimpleImmutableEntry; 39 40 public class SimpleEntries { 41 private static String k = "foo"; 42 private static Long v = 1L; 43 private static Long v2 = 2L; realMain(String[] args)44 private static void realMain(String[] args) throws Throwable { 45 testEntry(new SimpleEntry<String,Long>(k,v)); 46 testEntry(new SimpleImmutableEntry<String,Long>(k,v)); 47 testEntry(Map.entry(k,v)); 48 testEntry(Map.Entry.copyOf(Map.entry(k,v))); 49 testEntry(new NullableKeyValueHolder(k,v)); 50 testNullEntry(new SimpleEntry<String,Long>(null,null)); 51 testNullEntry(new SimpleImmutableEntry<String,Long>(null,null)); 52 testNullEntry(new NullableKeyValueHolder(null,null)); 53 } 54 testEntry(Map.Entry<String,Long> e)55 private static void testEntry(Map.Entry<String,Long> e) { 56 equal(e.getKey(), k); 57 equal(e.getValue(), v); 58 equal(e, new SimpleEntry<String,Long>(k,v)); 59 check(! e.equals(new SimpleEntry<String,Long>(k,v2))); 60 check(! e.equals(null)); 61 equal(e, new SimpleImmutableEntry<String,Long>(k,v)); 62 equal(e.toString(), k+"="+v); 63 check(e.hashCode() == 101575); // hash("foo") ^ hash(1L) 64 if (e instanceof SimpleEntry) { 65 equal(e.setValue(v2), v); 66 equal(e.getValue(), v2); 67 equal(e.setValue(null), v2); 68 equal(e.getValue(), null); 69 } else { 70 try { e.setValue(v2); fail(); } 71 catch (UnsupportedOperationException t) {} 72 catch (Throwable t) { unexpected(t); } 73 } 74 } 75 testNullEntry(Map.Entry<String,Long> e)76 private static void testNullEntry(Map.Entry<String,Long> e) { 77 equal(e.getKey(), null); 78 equal(e.getValue(), null); 79 equal(e, new SimpleEntry<String,Long>(null, null)); 80 equal(e, new SimpleImmutableEntry<String,Long>(null, null)); 81 equal(e.toString(), "null=null"); 82 check(e.hashCode() == 0); 83 if (e instanceof SimpleEntry) { 84 equal(e.setValue(v), null); 85 equal(e.getValue(), v); 86 } else { 87 try { e.setValue(null); fail(); } 88 catch (UnsupportedOperationException t) {} 89 catch (Throwable t) { unexpected(t); } 90 } 91 } 92 93 //--------------------- Infrastructure --------------------------- 94 static volatile int passed = 0, failed = 0; pass()95 static void pass() {passed++;} fail()96 static void fail() {failed++; Thread.dumpStack();} fail(String msg)97 static void fail(String msg) {System.out.println(msg); fail();} unexpected(Throwable t)98 static void unexpected(Throwable t) {failed++; t.printStackTrace();} check(boolean cond)99 static void check(boolean cond) {if (cond) pass(); else fail();} equal(Object x, Object y)100 static void equal(Object x, Object y) { 101 if (x == null ? y == null : x.equals(y)) pass(); 102 else fail(x + " not equal to " + y);} main(String[] args)103 public static void main(String[] args) throws Throwable { 104 try {realMain(args);} catch (Throwable t) {unexpected(t);} 105 System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed); 106 if (failed > 0) throw new AssertionError("Some tests failed");} 107 } 108