58 lines
2.2 KiB
Java
58 lines
2.2 KiB
Java
/*
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* Copyright (c) 2015, 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 8080535
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* @summary Expected size of Character.UnicodeBlock.map is not optimal
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* @library /lib/testlibrary
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* @build jdk.testlibrary.OptimalCapacity
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* @run main OptimalMapSize
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*/
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import jdk.testlibrary.OptimalCapacity;
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// What will be the number of the Unicode blocks in the future.
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//
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// According to http://www.unicode.org/versions/Unicode7.0.0/ ,
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// in Unicode 7 there will be added 32 new blocks (96 with aliases).
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// According to http://www.unicode.org/versions/beta-8.0.0.html ,
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// in Unicode 8 there will be added 10 more blocks (30 with aliases).
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//
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// After implementing support of Unicode 7 and 8 in Java, there will
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// be 510+96+30 = 636 entries in Character.UnicodeBlock.map.
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//
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// Initialization of the map and this test will have to be adjusted
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// accordingly then.
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public class OptimalMapSize {
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public static void main(String[] args) throws Throwable {
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// The initial size of Character.UnicodeBlock.map.
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// See src/java.base/share/classes/java/lang/Character.java
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int initialCapacity = (int)(510 / 0.75f + 1.0f);
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OptimalCapacity.ofHashMap(Character.UnicodeBlock.class,
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"map", initialCapacity);
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}
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}
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