GetTestCase.java

/*
 * Copyright (C) 2009 eXo Platform SAS.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.exoplatform.commons.cache.future;

import java.util.concurrent.Callable;

import junit.framework.Assert;
import junit.framework.TestCase;

/**
 * @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a>
 * @version $Revision$
 */
public class GetTestCase extends TestCase {
    public void testGet() {
        FutureMap<String, String, Callable<String>> futureCache = new FutureMap<String, String, Callable<String>>(
                new StringLoader());
        Assert.assertEquals("foo_value", futureCache.get(new Callable<String>() {
            public String call() throws Exception {
                return "foo_value";
            }
        }, "foo"));
        Assert.assertEquals("foo_value", futureCache.data.get("foo"));
    }

    public void testNullValue() {
        FutureMap<String, String, Callable<String>> futureCache = new FutureMap<String, String, Callable<String>>(
                new StringLoader());
        Assert.assertEquals(null, futureCache.get(new Callable<String>() {
            public String call() throws Exception {
                return null;
            }
        }, "foo"));
        Assert.assertFalse(futureCache.data.containsKey("foo"));
    }

    public void testThrowException() {
        FutureMap<String, String, Callable<String>> futureCache = new FutureMap<String, String, Callable<String>>(
                new StringLoader());
        Assert.assertEquals(null, futureCache.get(new Callable<String>() {
            public String call() throws Exception {
                throw new Exception("DON'T FREAK OUT");
            }
        }, "foo"));
        Assert.assertFalse(futureCache.data.containsKey("foo"));
    }

    public void testReentrancy() {
        final FutureMap<String, String, Callable<String>> futureCache = new FutureMap<String, String, Callable<String>>(
                new StringLoader());
        String res = futureCache.get(new Callable<String>() {
            public String call() throws Exception {
                try {
                    futureCache.get(new Callable<String>() {
                        public String call() throws Exception {
                            // Should not go there
                            throw new AssertionError();
                        }
                    }, "foo");
                    return "fail";
                } catch (IllegalStateException expected) {
                    return "pass";
                }
            }
        }, "foo");
        assertEquals("pass", res);
    }
}