1 /* 2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test 8167461 26 * @summary Verify PipeInputStream works. 27 * @modules jdk.compiler/com.sun.tools.javac.util 28 * jdk.jshell/jdk.jshell.execution:open 29 * @run testng PipeInputStreamTest 30 */ 31 32 import java.io.InputStream; 33 import java.io.OutputStream; 34 import java.lang.reflect.Constructor; 35 import java.lang.reflect.Method; 36 37 import org.testng.annotations.Test; 38 39 import com.sun.tools.javac.util.Pair; 40 41 import static org.testng.Assert.*; 42 43 @Test 44 public class PipeInputStreamTest { 45 testReadArrayNotBlocking()46 public void testReadArrayNotBlocking() throws Exception { 47 Pair<InputStream, OutputStream> streams = createPipeStream(); 48 InputStream in = streams.fst; 49 OutputStream out = streams.snd; 50 out.write('a'); 51 byte[] data = new byte[12]; 52 assertEquals(in.read(data), 1); 53 assertEquals(data[0], 'a'); 54 out.write('a'); out.write('b'); out.write('c'); 55 assertEquals(in.read(data), 3); 56 assertEquals(data[0], 'a'); 57 assertEquals(data[1], 'b'); 58 assertEquals(data[2], 'c'); 59 } 60 createPipeStream()61 private Pair<InputStream, OutputStream> createPipeStream() throws Exception { 62 Class<?> pipeStreamClass = Class.forName("jdk.jshell.execution.PipeInputStream"); 63 Constructor<?> c = pipeStreamClass.getDeclaredConstructor(); 64 c.setAccessible(true); 65 Object pipeStream = c.newInstance(); 66 Method createOutputStream = pipeStreamClass.getDeclaredMethod("createOutput"); 67 createOutputStream.setAccessible(true); 68 return Pair.of((InputStream) pipeStream, (OutputStream) createOutputStream.invoke(pipeStream)); 69 } 70 71 } 72