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