/*
* Copyright ( c ) 2011 , 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 5045147
* @ summary Test handling of null with empty Map
* @ author Mike Duigou
*/
import java.util.*;
import java.util.concurrent.*;
import java.util.concurrent.atomic.*;
import java.lang.reflect.*;
public class EmptyMapAndNulls {
@SuppressWarnings("rawtypes" )
static void realMain(String[] args) throws Throwable {
// No comparator
Map<String,String> comparable = new TreeMap<>();
// insert null into empty map (5045147 failure)
try {
comparable.put(null , "anything" );
fail("null shouldn't be accepted" );
} catch (NullPointerException failed) {
pass();
}
// insert non-null into empty map
try {
comparable.put("test" , "anything" );
pass();
} catch (NullPointerException failed) {
fail();
}
// insert null into non-empty map
try {
comparable.put(null , "anything" );
fail("null shouldn't be accepted" );
} catch (NullPointerException failed) {
pass();
}
// Comparator (String.CASE_INSENSITIVE_ORDER). Intentionally a raw type.
Map comparator = new TreeMap(String.CASE_INSENSITIVE_ORDER);
// insert null into empty map (5045147 failure)
try {
comparator.put(null , "anything" );
fail("null shouldn't be accepted" );
} catch (NullPointerException failed) {
pass();
}
// insert non-null into empty map
try {
comparator.put("test" , "anything" );
pass();
} catch (NullPointerException failed) {
fail();
}
// insert null into non-empty map
try {
comparator.put(null , "anything" );
fail("null shouldn't be accepted" );
} catch (NullPointerException failed) {
pass();
}
comparator.clear();
// insert non-String into empty map (5045147 failure)
try {
comparator.put(new Object(), "anything" );
fail("Object shouldn't be accepted" );
} catch (ClassCastException failed) {
pass();
}
}
//--------------------- Infrastructure ---------------------------
static volatile int passed = 0 , failed = 0 ;
static void pass() {passed++;}
static void fail() {failed++; Thread .dumpStack();}
static void fail(String msg) {System.out.println(msg); fail();}
static void unexpected(Throwable t) {failed++; t.printStackTrace();}
static void check(boolean cond) {if (cond) pass(); else fail();}
static void equal(Object x, Object y) {
if (x == null ? y == null : x.equals(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 AssertionError("Some tests failed" );}
}
Messung V0.5 in Prozent C=94 H=92 G=92
¤ Dauer der Verarbeitung: 0.2 Sekunden
¤
*© Formatika GbR, Deutschland