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