106 lines
4.3 KiB
Java
106 lines
4.3 KiB
Java
/*
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* Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 4904074 6328220 6330389 8308167
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* @modules java.base/jdk.internal.util
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* @summary Basic tests for several Map.Entry implementations
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* @author Martin Buchholz
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*/
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import java.util.Map;
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import jdk.internal.util.NullableKeyValueHolder;
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import static java.util.AbstractMap.SimpleEntry;
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import static java.util.AbstractMap.SimpleImmutableEntry;
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public class SimpleEntries {
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private static String k = "foo";
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private static Long v = 1L;
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private static Long v2 = 2L;
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private static void realMain(String[] args) throws Throwable {
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testEntry(new SimpleEntry<String,Long>(k,v));
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testEntry(new SimpleImmutableEntry<String,Long>(k,v));
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testEntry(Map.entry(k,v));
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testEntry(Map.Entry.copyOf(Map.entry(k,v)));
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testEntry(new NullableKeyValueHolder(k,v));
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testNullEntry(new SimpleEntry<String,Long>(null,null));
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testNullEntry(new SimpleImmutableEntry<String,Long>(null,null));
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testNullEntry(new NullableKeyValueHolder(null,null));
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}
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private static void testEntry(Map.Entry<String,Long> e) {
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equal(e.getKey(), k);
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equal(e.getValue(), v);
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equal(e, new SimpleEntry<String,Long>(k,v));
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check(! e.equals(new SimpleEntry<String,Long>(k,v2)));
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check(! e.equals(null));
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equal(e, new SimpleImmutableEntry<String,Long>(k,v));
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equal(e.toString(), k+"="+v);
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check(e.hashCode() == 101575); // hash("foo") ^ hash(1L)
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if (e instanceof SimpleEntry) {
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equal(e.setValue(v2), v);
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equal(e.getValue(), v2);
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equal(e.setValue(null), v2);
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equal(e.getValue(), null);
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} else {
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try { e.setValue(v2); fail(); }
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catch (UnsupportedOperationException t) {}
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catch (Throwable t) { unexpected(t); }
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}
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}
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private static void testNullEntry(Map.Entry<String,Long> e) {
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equal(e.getKey(), null);
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equal(e.getValue(), null);
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equal(e, new SimpleEntry<String,Long>(null, null));
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equal(e, new SimpleImmutableEntry<String,Long>(null, null));
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equal(e.toString(), "null=null");
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check(e.hashCode() == 0);
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if (e instanceof SimpleEntry) {
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equal(e.setValue(v), null);
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equal(e.getValue(), v);
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} else {
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try { e.setValue(null); fail(); }
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catch (UnsupportedOperationException t) {}
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catch (Throwable t) { unexpected(t); }
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}
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}
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//--------------------- Infrastructure ---------------------------
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static volatile int passed = 0, failed = 0;
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static void pass() {passed++;}
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static void fail() {failed++; Thread.dumpStack();}
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static void fail(String msg) {System.out.println(msg); fail();}
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static void unexpected(Throwable t) {failed++; t.printStackTrace();}
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static void check(boolean cond) {if (cond) pass(); else fail();}
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static void equal(Object x, Object y) {
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if (x == null ? y == null : x.equals(y)) pass();
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else fail(x + " not equal to " + y);}
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public static void main(String[] args) throws Throwable {
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try {realMain(args);} catch (Throwable t) {unexpected(t);}
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System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);
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if (failed > 0) throw new AssertionError("Some tests failed");}
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}
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