| /* |
| * Copyright (c) 2011, 2014, 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. |
| */ |
| |
| /* |
| * @test |
| * @bug 5020931 8048207 |
| * @summary Unit test for Collections.checkedQueue |
| * @run testng CheckedQueue |
| */ |
| |
| import java.util.Collections; |
| import java.util.Queue; |
| import java.util.concurrent.ArrayBlockingQueue; |
| |
| import org.testng.annotations.Test; |
| import static org.testng.Assert.fail; |
| import static org.testng.Assert.assertEquals; |
| import static org.testng.Assert.assertTrue; |
| import static org.testng.Assert.assertFalse; |
| |
| |
| public class CheckedQueue { |
| |
| /** |
| * This test adds items to a queue. |
| */ |
| @Test |
| public void testAdd() { |
| int arrayLength = 10; |
| Queue<String> abq = Collections.checkedQueue(new ArrayBlockingQueue<>(arrayLength), String.class); |
| |
| for (int i = 0; i < arrayLength; i++) { |
| abq.add(Integer.toString(i)); |
| } |
| |
| try { |
| abq.add("full"); |
| } catch (IllegalStateException full) { |
| |
| } |
| } |
| |
| /** |
| * This test tests the CheckedQueue.add method. It creates a queue of |
| * {@code String}s gets the checked queue, and attempt to add an Integer to |
| * the checked queue. |
| */ |
| @Test(expectedExceptions = ClassCastException.class) |
| public void testAddFail1() { |
| int arrayLength = 10; |
| ArrayBlockingQueue<String> abq = new ArrayBlockingQueue(arrayLength + 1); |
| |
| for (int i = 0; i < arrayLength; i++) { |
| abq.add(Integer.toString(i)); |
| } |
| |
| Queue q = Collections.checkedQueue(abq, String.class); |
| q.add(0); |
| } |
| |
| /** |
| * This test tests the CheckedQueue.add method. It creates a queue of one |
| * {@code String}, gets the checked queue, and attempt to add an Integer to |
| * the checked queue. |
| */ |
| @Test(expectedExceptions = ClassCastException.class) |
| public void testAddFail2() { |
| ArrayBlockingQueue<String> abq = new ArrayBlockingQueue(1); |
| Queue q = Collections.checkedQueue(abq, String.class); |
| |
| q.add(0); |
| } |
| |
| /** |
| * This test tests the Collections.checkedQueue method call for nulls in |
| * each and both of the parameters. |
| */ |
| @Test |
| public void testArgs() { |
| ArrayBlockingQueue<String> abq = new ArrayBlockingQueue(1); |
| Queue q; |
| |
| try { |
| q = Collections.checkedQueue(null, String.class); |
| fail( "should throw NullPointerException."); |
| } catch(NullPointerException npe) { |
| // Do nothing |
| } |
| |
| try { |
| q = Collections.checkedQueue(abq, null); |
| fail( "should throw NullPointerException."); |
| } catch(Exception e) { |
| // Do nothing |
| } |
| |
| try { |
| q = Collections.checkedQueue(null, null); |
| fail( "should throw NullPointerException."); |
| } catch(Exception e) { |
| // Do nothing |
| } |
| } |
| |
| /** |
| * This test tests the CheckedQueue.offer method. |
| */ |
| @Test |
| public void testOffer() { |
| ArrayBlockingQueue<String> abq = new ArrayBlockingQueue(1); |
| Queue q = Collections.checkedQueue(abq, String.class); |
| |
| try { |
| q.offer(null); |
| fail("should throw NullPointerException."); |
| } catch (NullPointerException npe) { |
| // Do nothing |
| } |
| |
| try { |
| q.offer(0); |
| fail("should throw ClassCastException."); |
| } catch (ClassCastException cce) { |
| // Do nothing |
| } |
| |
| assertTrue(q.offer("0"), "queue should have room"); |
| |
| // no room at the inn! |
| assertFalse(q.offer("1"), "queue should be full"); |
| } |
| } |