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.
85 lines
2.8 KiB
Java
85 lines
2.8 KiB
Java
/*
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* Copyright (c) 2020, 2026, 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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import java.io.CharArrayReader;
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import java.io.File;
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import java.io.FileReader;
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import java.io.IOException;
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import java.io.LineNumberReader;
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import java.io.PushbackReader;
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import java.io.Reader;
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import java.io.StringReader;
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import java.util.stream.Stream;
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import org.junit.jupiter.api.AfterAll;
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import org.junit.jupiter.api.BeforeAll;
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import org.junit.jupiter.params.ParameterizedTest;
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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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/*
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* @test
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* @bug 8248383
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* @summary Ensure that zero is returned for read into zero length array
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* @run junit ReadIntoZeroLengthArray
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*/
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public class ReadIntoZeroLengthArray {
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private static File file;
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private static char[] cbuf0;
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private static char[] cbuf1;
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@BeforeAll
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public static void setup() throws IOException {
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file = File.createTempFile("foo", "bar", new File("."));
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cbuf0 = new char[0];
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cbuf1 = new char[1];
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}
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@AfterAll
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public static void teardown() throws IOException {
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file.delete();
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}
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public static Stream<Reader> readers() throws IOException {
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return Stream.of(new LineNumberReader(new FileReader(file)),
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new CharArrayReader(new char[] {27}),
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new PushbackReader(new FileReader(file)),
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new FileReader(file),
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new StringReader(new String(new byte[] {(byte)42})));
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}
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@ParameterizedTest
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@MethodSource("readers")
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void test0(Reader r) throws IOException {
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assertEquals(0, r.read(cbuf0));
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}
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@ParameterizedTest
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@MethodSource("readers")
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void test1(Reader r) throws IOException {
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assertEquals(0, r.read(cbuf1, 0, 0));
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}
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}
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