140 lines
6.0 KiB
Java
140 lines
6.0 KiB
Java
/*
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* Copyright (c) 2005, 2012, 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 6306829
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* @summary Verify assertions in get() javadocs
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* @author Martin Buchholz
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*/
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import java.util.HashMap;
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import java.util.Hashtable;
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import java.util.IdentityHashMap;
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import java.util.LinkedHashMap;
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import java.util.Map;
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import java.util.Objects;
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import java.util.SortedMap;
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import java.util.TreeMap;
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import java.util.WeakHashMap;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.concurrent.ConcurrentMap;
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import java.util.concurrent.ConcurrentSkipListMap;
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public class Get {
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private static void realMain(String[] args) throws Throwable {
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testMap(new Hashtable<Character,Boolean>());
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testMap(new HashMap<Character,Boolean>());
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testMap(new IdentityHashMap<Character,Boolean>());
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testMap(new LinkedHashMap<Character,Boolean>());
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testMap(new ConcurrentHashMap<Character,Boolean>());
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testMap(new WeakHashMap<Character,Boolean>());
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testMap(new TreeMap<Character,Boolean>());
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testMap(new ConcurrentSkipListMap<Character,Boolean>());
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}
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private static void put(Map<Character,Boolean> m,
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Character key, Boolean value,
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Boolean oldValue) {
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if (oldValue != null) {
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check("containsValue(oldValue)", m.containsValue(oldValue));
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check("values.contains(oldValue)", m.values().contains(oldValue));
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}
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equal(m.put(key, value), oldValue);
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equal(m.get(key), value);
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check("containsKey", m.containsKey(key));
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check("keySet.contains", m.keySet().contains(key));
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check("containsValue", m.containsValue(value));
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check("values.contains", m.values().contains(value));
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check("!isEmpty", ! m.isEmpty());
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}
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private static void testMap(Map<Character,Boolean> m) {
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// We verify following assertions in get(Object) method javadocs
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boolean permitsNullKeys = (! (m instanceof ConcurrentMap ||
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m instanceof Hashtable ||
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m instanceof SortedMap));
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boolean permitsNullValues = (! (m instanceof ConcurrentMap ||
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m instanceof Hashtable));
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boolean usesIdentity = m instanceof IdentityHashMap;
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System.err.println(m.getClass());
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put(m, 'A', true, null);
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put(m, 'A', false, true); // Guaranteed identical by JLS
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put(m, 'B', true, null);
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put(m, new Character('A'), false, usesIdentity ? null : false);
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if (permitsNullKeys) {
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try {
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put(m, null, true, null);
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put(m, null, false, true);
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}
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catch (Throwable t) { unexpected(m.getClass().getName(), t); }
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} else {
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try { m.get(null); fail(m.getClass().getName() + " did not reject null key"); }
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catch (NullPointerException e) {}
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catch (Throwable t) { unexpected(m.getClass().getName(), t); }
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try { m.put(null, true); fail(m.getClass().getName() + " did not reject null key"); }
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catch (NullPointerException e) {}
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catch (Throwable t) { unexpected(m.getClass().getName(), t); }
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}
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if (permitsNullValues) {
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try {
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put(m, 'C', null, null);
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put(m, 'C', true, null);
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put(m, 'C', null, true);
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}
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catch (Throwable t) { unexpected(m.getClass().getName(), t); }
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} else {
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try { m.put('A', null); fail(m.getClass().getName() + " did not reject null key"); }
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catch (NullPointerException e) {}
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catch (Throwable t) { unexpected(m.getClass().getName(), t); }
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try { m.put('C', null); fail(m.getClass().getName() + " did not reject null key"); }
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catch (NullPointerException e) {}
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catch (Throwable t) { unexpected(m.getClass().getName(), 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++; new Error("Failure").printStackTrace(System.err); }
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static void fail(String msg) { failed++; new Error("Failure: " + msg).printStackTrace(System.err); }
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static void unexpected(String msg, Throwable t) { System.err.println("Unexpected: " + msg); unexpected(t); }
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static void unexpected(Throwable t) { failed++; t.printStackTrace(System.err); }
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static void check(boolean cond) { if (cond) pass(); else fail(); }
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static void check(String desc, boolean cond) { if (cond) pass(); else fail(desc); }
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static void equal(Object x, Object y) {
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if (Objects.equals(x,y)) pass(); else fail(x + " not equal to " + y);
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}
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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 Error("Some tests failed");
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}
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}
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