/* * 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.
*/
privatestaticvoid checkCapacity(int before, int after) { if (before != after) { thrownew RuntimeException("capacity is expected to be unchanged: " + "before=" + before + " after=" + after);
}
}
privatestaticvoid 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); thrownew RuntimeException("IndexOutOfBoundsException not thrown");
} catch (IndexOutOfBoundsException ex) {
}
}
privatestaticvoid testStringBuffer() {
StringBuffer sb = new StringBuffer("abc"); int cap = sb.capacity();
// test if negative minimumCapacity
sb.ensureCapacity(Integer.MIN_VALUE);
checkCapacity(cap, sb.capacity());
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