| /* |
| * Copyright (c) 2018, 2021, 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 org.testng.annotations.AfterClass; |
| import org.testng.annotations.BeforeClass; |
| import org.testng.annotations.Test; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| |
| import static org.testng.Assert.assertNotNull; |
| import static org.testng.Assert.fail; |
| |
| /* |
| * @test |
| * @bug 4358774 |
| * @run testng NullOutputStream |
| * @summary Check for expected behavior of OutputStream.nullOutputStream(). |
| */ |
| public class NullOutputStream { |
| private static OutputStream openStream; |
| private static OutputStream closedStream; |
| |
| @BeforeClass |
| public static void setup() { |
| openStream = OutputStream.nullOutputStream(); |
| closedStream = OutputStream.nullOutputStream(); |
| try { |
| closedStream.close(); |
| } catch (IOException e) { |
| fail("Unexpected IOException"); |
| } |
| } |
| |
| @AfterClass |
| public static void closeStream() { |
| try { |
| openStream.close(); |
| } catch (IOException e) { |
| fail("Unexpected IOException"); |
| } |
| } |
| |
| @Test |
| public static void testOpen() { |
| assertNotNull(openStream, |
| "OutputStream.nullOutputStream() returned null"); |
| } |
| |
| @Test |
| public static void testWrite() { |
| try { |
| openStream.write(62832); |
| } catch (IOException e) { |
| fail("Unexpected IOException"); |
| } |
| } |
| |
| @Test |
| public static void testWriteBII() { |
| try { |
| openStream.write(new byte[] {(byte)6}, 0, 1); |
| } catch (Exception e) { |
| fail("Unexpected IOException"); |
| } |
| } |
| |
| @Test |
| public static void testWriteClosed() { |
| try { |
| closedStream.write(62832); |
| fail("Expected IOException not thrown"); |
| } catch (IOException e) { |
| } |
| } |
| |
| @Test |
| public static void testWriteBIIClosed() { |
| try { |
| closedStream.write(new byte[] {(byte)6}, 0, 1); |
| fail("Expected IOException not thrown"); |
| } catch (IOException e) { |
| } |
| } |
| } |