--- /dev/null 2017-12-07 11:23:25.000000000 -0800 +++ new/test/jdk/java/io/OutputStream/NullOutputStream.java 2017-12-07 11:23:25.000000000 -0800 @@ -0,0 +1,73 @@ +/* + * Copyright (c) 2017, 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. + */ + +import java.io.IOException; +import java.io.OutputStream; + +/* + * @test + * @bug 4358774 + * @summary Check for expected behavior of OutputStream.nullStream(). + */ +public class NullOutputStream { + public static void main(String[] args) throws IOException { + int failures = 0; + + OutputStream out = OutputStream.nullStream(); + if (out == null) { + throw new RuntimeException + ("OutputStream.nullStream() returned null"); + } + + try { + out.write(62832); + } catch (Exception e) { + System.err.println("Unexpected Exception from write()"); + failures++; + } + try { + out.write(new byte[] {(byte)6}, 0, 1); + } catch (Exception e) { + System.err.println("Unexpected Exception from write(b,i,i)"); + failures++; + } + + out.close(); + try { + out.write(62832); + System.err.println("No IOException from write() after closing"); + failures++; + } catch (IOException e) { + } + try { + out.write(new byte[] {(byte)6}, 0, 1); + System.err.println("No IOException from write(b,i,i) after closing"); + failures++; + } catch (IOException e) { + } + + if (failures != 0) { + throw new RuntimeException("Test failed"); + } + } +}