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/*******************************************************************************
* Copyright (c) 2003, 2015 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.osgi.tests.perf;
import java.io.*;
import junit.framework.Test;
import junit.framework.TestSuite;
import org.eclipse.core.tests.harness.CoreTest;
import org.eclipse.core.tests.harness.PerformanceTestRunner;
import org.eclipse.osgi.service.resolver.State;
public class StatePerformanceTest extends BasePerformanceTest {
public static Test suite() {
return new TestSuite(StatePerformanceTest.class);
}
public StatePerformanceTest(String name) {
super(name);
}
State storeAndRetrieve(State toStore) throws IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
toStore.getFactory().writeState(toStore, baos);
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
return toStore.getFactory().readState(bais);
}
public void testCreation() {
final int stateSize = 5000;
new PerformanceTestRunner() {
protected void test() {
buildRandomState(stateSize);
}
}.run(this, 10, 10);
}
private void testResolution(int stateSize, int repetitions, String localName, String degradation) {
final State originalState = buildRandomState(stateSize);
PerformanceTestRunner runner = new PerformanceTestRunner() {
protected void test() {
originalState.resolve(false);
}
};
runner.setRegressionReason(degradation);
runner.run(this, localName, 10, repetitions);
}
public void testResolution100() {
testResolution(100, 500, null, AllTests.DEGRADATION_RESOLUTION);
}
public void testResolution1000() {
testResolution(1000, 15, "State Resolution", null);
}
public void testResolution500() {
testResolution(500, 50, null, AllTests.DEGRADATION_RESOLUTION);
}
public void testResolution5000() {
testResolution(5000, 1, null, AllTests.DEGRADATION_RESOLUTION);
}
private static final String DEGREDATION_STORE_RETRIEVE = "Performance decrease caused by additional fuctionality required for generic capabilities/requirements in OSGi R4.3 specification. See https://bugs.eclipse.org/bugs/show_bug.cgi?id=324753 for details.";
public void testStoreAndRetrieve() {
int stateSize = 5000;
final State originalState = buildRandomState(stateSize);
PerformanceTestRunner runner = new PerformanceTestRunner() {
protected void test() {
try {
storeAndRetrieve(originalState);
} catch (IOException e) {
CoreTest.fail("", e);
}
}
};
runner.setRegressionReason(DEGREDATION_STORE_RETRIEVE);
runner.run(this, 10, 10);
}
}
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