org.eclipse.gemini.blueprint.test.internal.support.OsgiJUnitTestAdapter.java Source code

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Here is the source code for org.eclipse.gemini.blueprint.test.internal.support.OsgiJUnitTestAdapter.java

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/******************************************************************************
 * Copyright (c) 2006, 2010 VMware Inc.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * and Apache License v2.0 which accompanies this distribution. 
 * The Eclipse Public License is available at 
 * http://www.eclipse.org/legal/epl-v10.html and the Apache License v2.0
 * is available at http://www.opensource.org/licenses/apache2.0.php.
 * You may elect to redistribute this code under either of these licenses. 
 * 
 * Contributors:
 *   VMware Inc.
 *****************************************************************************/

package org.eclipse.gemini.blueprint.test.internal.support;

import java.lang.reflect.Method;

import junit.framework.TestCase;

import org.eclipse.gemini.blueprint.test.AbstractOsgiTests;
import org.eclipse.gemini.blueprint.test.internal.OsgiJUnitTest;
import org.osgi.framework.BundleContext;
import org.springframework.util.Assert;

/**
 * Reflection-based adapter for {@link OsgiJUnitTest} used for wrapping
 * {@link AbstractOsgiTests} & co. with {@link OsgiJUnitTest} interface without
 * exposing the latter interface (which is internal and might be modified in the
 * future).
 * 
 * @author Costin Leau
 */
public class OsgiJUnitTestAdapter implements OsgiJUnitTest {

    private final TestCase target;

    private final Method injectBundleContext, runTest, setUp, tearDown;

    public OsgiJUnitTestAdapter(TestCase target) {
        Assert.notNull(target, "the adapter can be used only with a non-null test");

        this.target = target;

        try {

            // determine methods
            injectBundleContext = org.springframework.util.ReflectionUtils.findMethod(target.getClass(),
                    "injectBundleContext", new Class<?>[] { BundleContext.class });
            org.springframework.util.ReflectionUtils.makeAccessible(injectBundleContext);

            runTest = org.springframework.util.ReflectionUtils.findMethod(target.getClass(), "osgiRunTest");
            org.springframework.util.ReflectionUtils.makeAccessible(runTest);

            setUp = org.springframework.util.ReflectionUtils.findMethod(target.getClass(), "osgiSetUp");
            org.springframework.util.ReflectionUtils.makeAccessible(setUp);

            tearDown = org.springframework.util.ReflectionUtils.findMethod(target.getClass(), "osgiTearDown");
            org.springframework.util.ReflectionUtils.makeAccessible(tearDown);

        } catch (Exception ex) {
            throw new RuntimeException(
                    "cannot determine JUnit hooks; is this test extending Spring-DM test framework?", ex);
        }

    }

    public void injectBundleContext(BundleContext bundleContext) {
        org.springframework.util.ReflectionUtils.invokeMethod(injectBundleContext, target,
                new Object[] { bundleContext });
    }

    public void osgiRunTest() throws Throwable {
        org.springframework.util.ReflectionUtils.invokeMethod(runTest, target);
    }

    public void osgiSetUp() throws Exception {
        org.springframework.util.ReflectionUtils.invokeMethod(setUp, target);
    }

    public void osgiTearDown() throws Exception {
        org.springframework.util.ReflectionUtils.invokeMethod(tearDown, target);
    }

    public TestCase getTestCase() {
        return target;
    }

}