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/*
* Copyright (c) 2022, 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 8292043
* @run testng StatefulDecoderNearEOF
* @summary Check MalformedInputException is thrown with stateful decoders
* with malformed input before EOF
*/
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UncheckedIOException;
import java.nio.charset.CodingErrorAction;
import java.nio.charset.MalformedInputException;
import java.nio.charset.StandardCharsets;
import java.util.stream.IntStream;
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertThrows;
@Test
public class StatefulDecoderNearEOF {
@DataProvider
public Object[][] inputs() {
return new Object[][] {
// BOM, followed by High surrogate (in UTF-16LE).
// First read() should throw an exception.
{new byte[] {(byte)0xff, (byte)0xfe, 0, (byte)0xd8}, 0},
// BOM, followed by 'A', 'B', 'C', then by High surrogate (in UTF-16LE).
// Fourth read() should throw an exception.
{new byte[] {(byte)0xff, (byte)0xfe, (byte)0x41, 0, (byte)0x42, 0, (byte)0x43, 0, 0, (byte)0xd8}, 3},
};
}
@Test (dataProvider = "inputs")
public void testStatefulDecoderNearEOF(byte[] ba, int numSucessReads) throws IOException {
try (var r = new InputStreamReader(
new ByteArrayInputStream(ba),
StandardCharsets.UTF_16.newDecoder().onMalformedInput(CodingErrorAction.REPORT))) {
// Issue read() as many as numSucessReads which should not fail
IntStream.rangeClosed(1, numSucessReads).forEach(i -> {
try {
assertEquals(r.read(), (int)ba[i * 2]);
} catch (IOException e) {
throw new UncheckedIOException(e);
}
});
// Final dangling high surrogate should throw an exception
assertThrows(MalformedInputException.class, () -> r.read());
}
}
}
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