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/*
* Copyright (c) 2015, 2018 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 8080535 8191410
* @summary Expected size of Character.UnicodeBlock.map is not optimal
* @library /lib/testlibrary
* @modules java.base/java.lang:open
* java.base/java.util:open
* @build jdk.testlibrary.OptimalCapacity
* @run main OptimalMapSize
*/
import jdk.testlibrary.OptimalCapacity;
// What will be the number of the Unicode blocks in the future.
//
// According to http://www.unicode.org/versions/Unicode7.0.0/ ,
// in Unicode 7 there will be added 32 new blocks (96 with aliases).
// According to http://www.unicode.org/versions/beta-8.0.0.html ,
// in Unicode 8 there will be added 10 more blocks (30 with aliases).
//
// After implementing support of Unicode 9 and 10 in Java, there will
// be 638 entries in Character.UnicodeBlock.map.
//
// Initialization of the map and this test will have to be adjusted
// accordingly then.
public class OptimalMapSize {
public static void main(String[] args) throws Throwable {
// The initial size of Character.UnicodeBlock.map.
// See src/java.base/share/classes/java/lang/Character.java
int initialCapacity = (int)(638 / 0.75f + 1.0f);
OptimalCapacity.ofHashMap(Character.UnicodeBlock.class,
"map", initialCapacity);
}
}
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