1 /* 2 * Copyright (c) 2018, 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 import java.io.IOException; 25 import java.io.OutputStream; 26 import org.testng.annotations.AfterGroups; 27 import org.testng.annotations.BeforeGroups; 28 import org.testng.annotations.Test; 29 import static org.testng.Assert.*; 30 31 /* 32 * @test 33 * @bug 4358774 34 * @run testng NullOutputStream 35 * @summary Check for expected behavior of OutputStream.nullOutputStream(). 36 */ 37 public class NullOutputStream { 38 private static OutputStream openStream; 39 private static OutputStream closedStream; 40 41 @BeforeGroups(groups="open") 42 public static void openStream() { 43 openStream = OutputStream.nullOutputStream(); 44 } 45 46 @BeforeGroups(groups="closed") 47 public static void openAndCloseStream() { 48 closedStream = OutputStream.nullOutputStream(); 49 try { 50 closedStream.close(); 51 } catch (IOException e) { 52 fail("Unexpected IOException"); 53 } 54 } 55 56 @AfterGroups(groups="open") 57 public static void closeStream() { 58 try { 59 openStream.close(); 60 } catch (IOException e) { 61 fail("Unexpected IOException"); 62 } 63 } 64 65 @Test(groups="open") 66 public static void testOpen() { 67 assertNotNull(openStream, 68 "OutputStream.nullOutputStream() returned null"); 69 } 70 71 @Test(groups="open") 72 public static void testWrite() { 73 try { 74 openStream.write(62832); 75 } catch (IOException e) { 76 fail("Unexpected IOException"); 77 } 78 } 79 80 @Test(groups="open") 81 public static void testWriteBII() { 82 try { 83 openStream.write(new byte[] {(byte)6}, 0, 1); 84 } catch (Exception e) { 85 fail("Unexpected IOException"); 86 } 87 } 88 89 @Test(groups="closed") 90 public static void testWriteClosed() { 91 try { 92 closedStream.write(62832); 93 fail("Expected IOException not thrown"); 94 } catch (IOException e) { 95 } 96 } 97 98 @Test(groups="closed") 99 public static void testWriteBIIClosed() { 100 try { 101 closedStream.write(new byte[] {(byte)6}, 0, 1); 102 fail("Expected IOException not thrown"); 103 } catch (IOException e) { 104 } 105 } 106 }