85 lines
3.0 KiB
Java
85 lines
3.0 KiB
Java
/*
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* Copyright (c) 2021, 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 8271732
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* @summary Basic test that charAt throws IIOBE as expected for out of bounds indexes.
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* @run testng CharAt
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*/
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import java.util.List;
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import org.testng.annotations.Test;
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import org.testng.annotations.DataProvider;
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import static org.testng.Assert.*;
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public class CharAt {
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/**
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* StringBuilder/-Buffer.charAt throws:
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* IndexOutOfBoundsException - if index is negative or greater than or equal to length().
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* the test inputs, expected to throw IndexOutOfBoundsException.
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*/
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@Test
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public void charAtIIOBE() {
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StringBuilder sb = new StringBuilder("test");
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StringBuffer sbuf = new StringBuffer("test");
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StringBuilder sbUtf16 = new StringBuilder("\uFF34est"); // Fullwidth Latin Capital Letter T
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StringBuffer sbufUtf16 = new StringBuffer("\uFF34est");
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List<Integer> outOfBoundsIndices = List.of(Integer.MIN_VALUE, -2, -1, 4, 5, Integer.MAX_VALUE);
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for (int index : outOfBoundsIndices) {
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try {
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sb.charAt(index);
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fail("StringBuilder.charAt index: " + index + " does not throw IOOBE as expected");
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} catch (IndexOutOfBoundsException ex) {
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// OK
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}
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try {
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sbUtf16.charAt(index);
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fail("StringBuilder.charAt index: " + index + " does not throw IOOBE as expected (UTF-16)");
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} catch (IndexOutOfBoundsException ex) {
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// OK
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}
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try {
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sbuf.charAt(index);
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fail("StringBuffer.charAt index: " + index + " does not throw IOOBE as expected");
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} catch (IndexOutOfBoundsException ex) {
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// OK
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}
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try {
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sbufUtf16.charAt(index);
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fail("StringBuffer.charAt index: " + index + " does not throw IOOBE as expected (UTF-16)");
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} catch (IndexOutOfBoundsException ex) {
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// OK
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}
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}
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}
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}
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