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/*
* 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");
}
}
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