72 lines
2.6 KiB
Java
72 lines
2.6 KiB
Java
/*
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* Copyright (c) 2016, 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 8167461
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* @summary Verify PipeInputStream works.
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* @modules jdk.compiler/com.sun.tools.javac.util
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* jdk.jshell/jdk.jshell.execution.impl:open
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* @run testng PipeInputStreamTest
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*/
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.lang.reflect.Constructor;
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import java.lang.reflect.Method;
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import org.testng.annotations.Test;
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import com.sun.tools.javac.util.Pair;
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import static org.testng.Assert.*;
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@Test
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public class PipeInputStreamTest {
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public void testReadArrayNotBlocking() throws Exception {
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Pair<InputStream, OutputStream> streams = createPipeStream();
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InputStream in = streams.fst;
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OutputStream out = streams.snd;
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out.write('a');
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byte[] data = new byte[12];
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assertEquals(in.read(data), 1);
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assertEquals(data[0], 'a');
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out.write('a'); out.write('b'); out.write('c');
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assertEquals(in.read(data), 3);
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assertEquals(data[0], 'a');
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assertEquals(data[1], 'b');
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assertEquals(data[2], 'c');
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}
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private Pair<InputStream, OutputStream> createPipeStream() throws Exception {
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Class<?> pipeStreamClass = Class.forName("jdk.jshell.execution.impl.PipeInputStream");
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Constructor<?> c = pipeStreamClass.getDeclaredConstructor();
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c.setAccessible(true);
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Object pipeStream = c.newInstance();
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Method createOutputStream = pipeStreamClass.getDeclaredMethod("createOutput");
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createOutputStream.setAccessible(true);
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return Pair.of((InputStream) pipeStream, (OutputStream) createOutputStream.invoke(pipeStream));
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}
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}
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