--- /dev/null 2017-12-07 11:23:12.000000000 -0800 +++ new/test/jdk/java/io/InputStream/NullInputStream.java 2017-12-07 11:23:12.000000000 -0800 @@ -0,0 +1,131 @@ +/* + * 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.ByteArrayOutputStream; +import java.io.InputStream; +import java.io.IOException; + +/* + * @test + * @bug 4358774 + * @summary Check for expected behavior of InputStream.nullStream(). + */ +public class NullInputStream { + public static void main(String[] args) throws IOException { + int failures = 0; + + InputStream in = InputStream.nullStream(); + if (in == null) { + throw new RuntimeException + ("InputStream.nullStream() returned null"); + } + + if (in.available() != 0) { + System.err.println("available() != 0"); + failures++; + } + + if (in.read() != -1) { + System.err.println("read() != -1"); + failures++; + } + + if (in.read(new byte[1]) != -1) { + System.err.println("read(byte[]) != -1"); + failures++; + } + + if (in.read(new byte[1], 0, 1) != -1) { + System.err.println("read(byte[],int,int) != -1"); + failures++; + } + + if (in.readAllBytes().length != 0) { + System.err.println("readAllBytes().length != 0"); + failures++; + } + + if (in.readNBytes(new byte[1], 0, 1) != 0) { + System.err.println("readNBytes(byte[],int,int) != -1"); + failures++; + } + + if (in.transferTo(new ByteArrayOutputStream(7)) != 0) { + System.err.println("transferTo() != 0"); + failures++; + } + + if (in.skip(1) != 0) { + System.err.println("skip() != 0"); + failures++; + } + + in.close(); + try { + in.available(); + System.err.println("No IOException from available() after closing"); + failures++; + } catch (IOException e) { + } + try { + in.read(); + System.err.println("No IOException from read() after closing"); + failures++; + } catch (IOException e) { + } + try { + in.read(new byte[1], 0, 1); + System.err.println("No IOException from read(b,i,i) after closing"); + failures++; + } catch (IOException e) { + } + try { + in.readAllBytes(); + System.err.println("No IOException from readAllBytes() after closing"); + failures++; + } catch (IOException e) { + } + try { + in.readNBytes(new byte[1], 0, 1); + System.err.println("No IOException from readNBytes() after closing"); + failures++; + } catch (IOException e) { + } + try { + in.skip(1); + System.err.println("No IOException from skip() after closing"); + failures++; + } catch (IOException e) { + } + try { + in.transferTo(new ByteArrayOutputStream(7)); + System.err.println("No IOException from transferTo() after closing"); + failures++; + } catch (IOException e) { + } + + if (failures != 0) { + throw new RuntimeException("Test failed"); + } + } +}