82 lines
2.8 KiB
Java
82 lines
2.8 KiB
Java
/*
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* Copyright (c) 2010, 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 6955504 6992121
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* @summary Test the StringBuilder.ensureCapacity() with negative minimumCapacity
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* and append() method with negative length input argument.
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* Also, test the StringBuffer class.
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*/
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import java.util.ArrayList;
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import java.util.Vector;
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public class EnsureCapacity {
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public static void main(String[] args) {
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testStringBuilder();
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testStringBuffer();
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}
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private static void checkCapacity(int before, int after) {
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if (before != after) {
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throw new RuntimeException("capacity is expected to be unchanged: " +
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"before=" + before + " after=" + after);
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}
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}
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private static void testStringBuilder() {
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StringBuilder sb = new StringBuilder("abc");
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int cap = sb.capacity();
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// test if negative minimumCapacity
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sb.ensureCapacity(Integer.MIN_VALUE);
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checkCapacity(cap, sb.capacity());
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try {
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char[] str = {'a', 'b', 'c', 'd'};
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// test if negative length
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sb.append(str, 0, Integer.MIN_VALUE + 10);
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throw new RuntimeException("IndexOutOfBoundsException not thrown");
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} catch (IndexOutOfBoundsException ex) {
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}
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}
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private static void testStringBuffer() {
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StringBuffer sb = new StringBuffer("abc");
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int cap = sb.capacity();
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// test if negative minimumCapacity
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sb.ensureCapacity(Integer.MIN_VALUE);
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checkCapacity(cap, sb.capacity());
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try {
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char[] str = {'a', 'b', 'c', 'd'};
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// test if negative length
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sb.append(str, 0, Integer.MIN_VALUE + 10);
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throw new RuntimeException("IndexOutOfBoundsException not thrown");
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} catch (IndexOutOfBoundsException ex) {
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}
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}
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}
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