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