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/*******************************************************************************
* Copyright (c) 2011, 2013 SAP AG and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Tobias Oberlies (SAP AG) - initial API and implementation
*******************************************************************************/
package org.eclipse.equinox.p2.tests;
import java.io.File;
import java.io.IOException;
import org.eclipse.equinox.p2.core.IProvisioningAgent;
import org.eclipse.equinox.p2.core.IProvisioningAgentProvider;
import org.eclipse.equinox.p2.core.ProvisionException;
import org.junit.rules.ExternalResource;
import org.junit.rules.TemporaryFolder;
import org.osgi.framework.BundleContext;
import org.osgi.framework.FrameworkUtil;
import org.osgi.framework.ServiceReference;
/**
* Provides {@link IProvisioningAgent} instances for tests. Use as JUnit 4 {@link Rule}.
*/
public final class TestAgentProvider extends ExternalResource {
private final TemporaryFolder tempManager;
private IProvisioningAgent agent;
public TestAgentProvider() {
this.tempManager = new TemporaryFolder();
}
@Override
protected void before() throws Throwable {
tempManager.create();
}
@Override
protected void after() {
if (agent != null) {
agent.stop();
}
tempManager.delete();
}
/**
* Returns an instance of an {@link IProvisioningAgent}. If this class is used as a JUnit method
* {@link Rule}, a separate instance is returned per test method.
*/
public IProvisioningAgent getAgent() throws ProvisionException {
if (agent == null) {
try {
agent = createProvisioningAgent(tempManager.newFolder("p2agent"));
} catch (IOException e) {
throw new RuntimeException(e);
}
}
return agent;
}
private IProvisioningAgent createProvisioningAgent(File location) throws ProvisionException {
BundleContext bundleContext = FrameworkUtil.getBundle(this.getClass()).getBundleContext();
ServiceReference<IProvisioningAgentProvider> serviceReference = bundleContext.getServiceReference(IProvisioningAgentProvider.class);
IProvisioningAgentProvider agentFactory = bundleContext.getService(serviceReference);
try {
return agentFactory.createAgent(location.toURI());
} finally {
bundleContext.ungetService(serviceReference);
}
}
/**
* Returns a service from the current agent.
*
* @see #getAgent()
*/
public <T> T getService(Class<T> type) throws ProvisionException {
return type.cast(getAgent().getService(type.getName()));
}
}
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