/*
 * JBoss, Home of Professional Open Source
 * Copyright 2010, Red Hat Middleware LLC, and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jboss.shrinkwrap.api.asset;

import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.util.logging.Logger;

import junit.framework.Assert;

import org.junit.Test;

/**
 * Test Cases for the {@link EmptyAsset}
 * 
 * @author <a href="mailto:dan.j.allen@gmail.com">Dan Allen</a>
 * @version $Revision: $
 */
public class EmptyAssetTestCase {

    // -------------------------------------------------------------------------------------||
    // Class Members ----------------------------------------------------------------------||
    // -------------------------------------------------------------------------------------||

    /**
     * Logger
     */
    private static final Logger log = Logger.getLogger(EmptyAssetTestCase.class.getName());

    // -------------------------------------------------------------------------------------||
    // Instance Members -------------------------------------------------------------------||
    // -------------------------------------------------------------------------------------||

    // -------------------------------------------------------------------------------------||
    // Tests ------------------------------------------------------------------------------||
    // -------------------------------------------------------------------------------------||

    /**
     * Ensures that the contents of the asset is empty.
     */
    @Test
    public void testRoundtrip() throws Exception {
        // Log
        log.info("testRoundtrip");

        // Make Asset
        final Asset asset = EmptyAsset.INSTANCE;

        // Get the contents back out of the asset
        final InputStream stream = asset.openStream();
        final ByteArrayOutputStream out = new ByteArrayOutputStream(0);
        int read;
        while ((read = stream.read()) != -1) {
            out.write(read);
        }

        Assert.assertEquals("Roundtrip did not produce empty contents", 0, out.toByteArray().length);
    }

    @Test
    public void shouldBeAbleToReturnByteArray() throws Exception {
    	// Make contents
    	final Asset asset = EmptyAsset.INSTANCE;
        final byte[] contentFromGetSource = ((EmptyAsset)asset).getSource();
        
        Assert.assertTrue(contentFromGetSource.length == 0);
    }
}