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/*******************************************************************************
* Copyright (c) 2003, 2007 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.osgi.tests.perf;
import java.util.Random;
import junit.framework.Test;
import junit.framework.TestSuite;
import org.eclipse.osgi.service.resolver.*;
import org.eclipse.osgi.tests.services.resolver.AbstractStateTest;
import org.osgi.framework.Version;
public class BasePerformanceTest extends AbstractStateTest {
private Random random;
public static Test suite() {
return new TestSuite(BasePerformanceTest.class);
}
public BasePerformanceTest(String name) {
super(name);
}
protected State buildRandomState(int size) {
State state = buildEmptyState();
StateObjectFactory stateFactory = state.getFactory();
BundleDescription[] bundles = new BundleDescription[size];
int exportedPackages = 0;
for (int i = 0; i < bundles.length; i++) {
long bundleId = i;
String symbolicName = "bundle" + i;
Version version = new Version(1, 0, 0);
int exportPackageCount = random.nextInt(5);
ExportPackageDescription[] exportPackages = new ExportPackageDescription[exportPackageCount];
for (int j = 0; j < exportPackages.length; j++) {
String packageName = "package." + exportedPackages++;
Version packageVersion = Version.parseVersion("1.0.0");
exportPackages[j] = stateFactory.createExportPackageDescription(packageName, packageVersion, null, null, true, null);
}
int importPackageCount = Math.min(exportPackageCount, random.nextInt(5));
int importedPackageIndex = random.nextInt(exportPackageCount + 1);
ImportPackageSpecification[] importPackages = new ImportPackageSpecification[importPackageCount];
for (int j = 0; j < importPackages.length; j++) {
int index = importedPackageIndex++;
if (importedPackageIndex > exportPackageCount)
importedPackageIndex = 1;
String packageName = "package." + index;
importPackages[j] = stateFactory.createImportPackageSpecification(packageName, new VersionRange("1.0.0"), null, null, null, null, null);
}
BundleSpecification[] requiredBundles = new BundleSpecification[Math.min(i, random.nextInt(5))];
for (int j = 0; j < requiredBundles.length; j++) {
int requiredIndex = random.nextInt(i);
String requiredName = bundles[requiredIndex].getSymbolicName();
Version requiredVersion = bundles[requiredIndex].getVersion();
boolean export = random.nextInt(10) > 6;
boolean optional = random.nextInt(10) > 8;
requiredBundles[j] = stateFactory.createBundleSpecification(requiredName, new VersionRange(requiredVersion.toString()), export, optional);
}
bundles[i] = stateFactory.createBundleDescription(bundleId, symbolicName, version, symbolicName, requiredBundles, (HostSpecification) null, importPackages, exportPackages, null, random.nextDouble() > 0.05);
state.addBundle(bundles[i]);
}
return state;
}
protected void setUp() throws Exception {
super.setUp();
// uses a constant seed to prevent variation on results
this.random = new Random(0);
}
}
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