russell@unturf.com
0a580b313d
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
80 lines
3.2 KiB
Java
80 lines
3.2 KiB
Java
/*
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* Copyright (c) 2022, 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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/* @test
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* @bug 8292043
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* @run junit StatefulDecoderNearEOF
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* @summary Check MalformedInputException is thrown with stateful decoders
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* with malformed input before EOF
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*/
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import java.io.ByteArrayInputStream;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.io.UncheckedIOException;
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import java.nio.charset.CodingErrorAction;
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import java.nio.charset.MalformedInputException;
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import java.nio.charset.StandardCharsets;
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import java.util.stream.IntStream;
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import java.util.stream.Stream;
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import org.junit.jupiter.params.ParameterizedTest;
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import org.junit.jupiter.params.provider.Arguments;
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import org.junit.jupiter.params.provider.MethodSource;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import static org.junit.jupiter.api.Assertions.assertThrows;
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public class StatefulDecoderNearEOF {
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public static Stream<Arguments> inputs() {
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return Stream.of(
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// BOM, followed by High surrogate (in UTF-16LE).
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// First read() should throw an exception.
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Arguments.of(new byte[] {(byte)0xff, (byte)0xfe, 0, (byte)0xd8}, 0),
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// BOM, followed by 'A', 'B', 'C', then by High surrogate (in UTF-16LE).
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// Fourth read() should throw an exception.
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Arguments.of(new byte[] {(byte)0xff, (byte)0xfe, (byte)0x41, 0, (byte)0x42, 0, (byte)0x43, 0, 0, (byte)0xd8}, 3));
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}
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@ParameterizedTest
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@MethodSource("inputs")
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public void testStatefulDecoderNearEOF(byte[] ba, int numSucessReads) throws IOException {
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try (var r = new InputStreamReader(
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new ByteArrayInputStream(ba),
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StandardCharsets.UTF_16.newDecoder().onMalformedInput(CodingErrorAction.REPORT))) {
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// Issue read() as many as numSucessReads which should not fail
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IntStream.rangeClosed(1, numSucessReads).forEach(i -> {
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try {
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assertEquals(r.read(), (int)ba[i * 2]);
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} catch (IOException e) {
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throw new UncheckedIOException(e);
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}
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});
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// Final dangling high surrogate should throw an exception
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assertThrows(MalformedInputException.class, () -> r.read());
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}
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}
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}
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