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/*
* Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 6306829
* @summary Verify assertions in get() javadocs
* @author Martin Buchholz
*/
import java.util.HashMap;
import java.util.Hashtable;
import java.util.IdentityHashMap;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Objects;
import java.util.SortedMap;
import java.util.TreeMap;
import java.util.WeakHashMap;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.ConcurrentSkipListMap;
public class Get {
private static void realMain(String[] args) throws Throwable {
testMap(new Hashtable<Character,Boolean>());
testMap(new HashMap<Character,Boolean>());
testMap(new IdentityHashMap<Character,Boolean>());
testMap(new LinkedHashMap<Character,Boolean>());
testMap(new ConcurrentHashMap<Character,Boolean>());
testMap(new WeakHashMap<Character,Boolean>());
testMap(new TreeMap<Character,Boolean>());
testMap(new ConcurrentSkipListMap<Character,Boolean>());
}
private static void put(Map<Character,Boolean> m,
Character key, Boolean value,
Boolean oldValue) {
if (oldValue != null) {
check("containsValue(oldValue)", m.containsValue(oldValue));
check("values.contains(oldValue)", m.values().contains(oldValue));
}
equal(m.put(key, value), oldValue);
equal(m.get(key), value);
check("containsKey", m.containsKey(key));
check("keySet.contains", m.keySet().contains(key));
check("containsValue", m.containsValue(value));
check("values.contains", m.values().contains(value));
check("!isEmpty", ! m.isEmpty());
}
private static void testMap(Map<Character,Boolean> m) {
// We verify following assertions in get(Object) method javadocs
boolean permitsNullKeys = (! (m instanceof ConcurrentMap ||
m instanceof Hashtable ||
m instanceof SortedMap));
boolean permitsNullValues = (! (m instanceof ConcurrentMap ||
m instanceof Hashtable));
boolean usesIdentity = m instanceof IdentityHashMap;
System.err.println(m.getClass());
put(m, 'A', true, null);
put(m, 'A', false, true); // Guaranteed identical by JLS
put(m, 'B', true, null);
put(m, new Character('A'), false, usesIdentity ? null : false);
if (permitsNullKeys) {
try {
put(m, null, true, null);
put(m, null, false, true);
}
catch (Throwable t) { unexpected(m.getClass().getName(), t); }
} else {
try { m.get(null); fail(m.getClass().getName() + " did not reject null key"); }
catch (NullPointerException e) {}
catch (Throwable t) { unexpected(m.getClass().getName(), t); }
try { m.put(null, true); fail(m.getClass().getName() + " did not reject null key"); }
catch (NullPointerException e) {}
catch (Throwable t) { unexpected(m.getClass().getName(), t); }
}
if (permitsNullValues) {
try {
put(m, 'C', null, null);
put(m, 'C', true, null);
put(m, 'C', null, true);
}
catch (Throwable t) { unexpected(m.getClass().getName(), t); }
} else {
try { m.put('A', null); fail(m.getClass().getName() + " did not reject null key"); }
catch (NullPointerException e) {}
catch (Throwable t) { unexpected(m.getClass().getName(), t); }
try { m.put('C', null); fail(m.getClass().getName() + " did not reject null key"); }
catch (NullPointerException e) {}
catch (Throwable t) { unexpected(m.getClass().getName(), t); }
}
}
//--------------------- Infrastructure ---------------------------
static volatile int passed = 0, failed = 0;
static void pass() { passed++; }
static void fail() { failed++; (new Error("Failure")).printStackTrace(System.err); }
static void fail(String msg) { failed++; (new Error("Failure: " + msg)).printStackTrace(System.err); }
static void unexpected(String msg, Throwable t) { System.err.println("Unexpected: " + msg); unexpected(t); }
static void unexpected(Throwable t) { failed++; t.printStackTrace(System.err); }
static void check(boolean cond) { if (cond) pass(); else fail(); }
static void check(String desc, boolean cond) { if (cond) pass(); else fail(desc); }
static void equal(Object x, Object y) {
if (Objects.equals(x,y)) pass(); else fail(x + " not equal to " + y);
}
public static void main(String[] args) throws Throwable {
try { realMain(args); } catch (Throwable t) { unexpected(t); }
System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);
if (failed > 0) throw new Error("Some tests failed");
}
}
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