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FastHierarchyTest.java
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package soot;
/*-
* #%L
* Soot - a J*va Optimization Framework
* %%
* Copyright (C) 1997 - 2018 Raja Vallée-Rai and others
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 2.1 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Lesser Public License for more details.
*
* You should have received a copy of the GNU General Lesser Public
* License along with this program. If not, see
* <http://www.gnu.org/licenses/lgpl-2.1.html>.
* #L%
*/
import static org.hamcrest.Matchers.containsInAnyOrder;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertThat;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Set;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import org.junit.Test;
public class FastHierarchyTest {
@Test
public void testGetAllSubinterfaces() {
G.reset();
Scene s = Scene.v();
s.loadNecessaryClasses();
SootClass scA = generacteSceneClass("InterfaceA", Modifier.INTERFACE);
SootClass scB = generacteSceneClass("InterfaceB", Modifier.INTERFACE);
SootClass scC1 = generacteSceneClass("InterfaceC1", Modifier.INTERFACE);
SootClass scC2 = generacteSceneClass("InterfaceC2", Modifier.INTERFACE);
SootClass scD = generacteSceneClass("InterfaceD", Modifier.INTERFACE);
SootClass scE1 = generacteSceneClass("InterfaceE1", Modifier.INTERFACE);
SootClass scE2 = generacteSceneClass("InterfaceE2", Modifier.INTERFACE);
SootClass sc6 = generacteSceneClass("Class1", 0);
scA.addInterface(scB);
scB.addInterface(scC1);
scB.addInterface(scC2);
scC1.addInterface(scD);
scD.addInterface(scE1);
scD.addInterface(scE2);
FastHierarchy fh = s.getOrMakeFastHierarchy();
// A sc6 is not an interface -> empty result
assertEquals(Collections.emptySet(), fh.getAllSubinterfaces(sc6));
assertThat(fh.getAllSubinterfaces(scA), containsInAnyOrder(scA));
assertThat(fh.getAllSubinterfaces(scB), containsInAnyOrder(scA, scB));
assertThat(fh.getAllSubinterfaces(scC1), containsInAnyOrder(scA, scB, scC1));
assertThat(fh.getAllSubinterfaces(scC2), containsInAnyOrder(scA, scB, scC2));
assertThat(fh.getAllSubinterfaces(scD), containsInAnyOrder(scA, scB, scC1, scD));
assertThat(fh.getAllSubinterfaces(scE1), containsInAnyOrder(scA, scB, scC1, scD, scE1));
assertThat(fh.getAllSubinterfaces(scE2), containsInAnyOrder(scA, scB, scC1, scD, scE2));
}
/**
* Execute {@link FastHierarchy#getAllSubinterfaces(SootClass)} concurrently and check the result
*
* This test uses a subclass of {@link FastHierarchy} that has a built-in delay to increase the time-span a potential
* problem because of concurrent access can arise.
*
* @throws Exception
*/
@Test
public void testGetAllSubinterfacesMultiThreaded() throws Exception {
G.reset();
Scene s = Scene.v();
s.loadNecessaryClasses();
SootClass scA = generacteSceneClass("InterfaceA", Modifier.INTERFACE);
SootClass scB = generacteSceneClass("InterfaceB", Modifier.INTERFACE);
SootClass scC = generacteSceneClass("InterfaceC", Modifier.INTERFACE);
SootClass scD = generacteSceneClass("InterfaceD", Modifier.INTERFACE);
SootClass scE = generacteSceneClass("InterfaceE", Modifier.INTERFACE);
scA.addInterface(scB);
scB.addInterface(scC);
scC.addInterface(scD);
scD.addInterface(scE);
final FastHierarchy hierarchy = new FastHierarchyForUnittest();
s.setFastHierarchy(hierarchy);
ExecutorService executor = Executors.newFixedThreadPool(4);
Callable<Set<SootClass>> c = new Callable<Set<SootClass>>() {
@Override
public Set<SootClass> call() throws Exception {
return hierarchy.getAllSubinterfaces(scE);
}
};
ArrayList<Future<Set<SootClass>>> results = new ArrayList<>(10);
for (int i = 0; i < 10; i++) {
results.add(executor.submit(c));
}
for (Future<Set<SootClass>> future : results) {
Set<SootClass> res = future.get();
assertThat(res, containsInAnyOrder(scA, scB, scC, scD, scE));
}
executor.shutdown();
}
@Test
public void testGetAllImplementersOfInterface() {
G.reset();
Scene s = Scene.v();
s.loadNecessaryClasses();
SootClass interfaceA = generacteSceneClass("InterfaceA", Modifier.INTERFACE);
SootClass interfaceB = generacteSceneClass("InterfaceB", Modifier.INTERFACE);
SootClass interfaceC1 = generacteSceneClass("InterfaceC1", Modifier.INTERFACE);
SootClass interfaceC2 = generacteSceneClass("InterfaceC2", Modifier.INTERFACE);
SootClass interfaceD = generacteSceneClass("InterfaceD", Modifier.INTERFACE);
SootClass scA = generacteSceneClass("ClassA", 0);
SootClass scB = generacteSceneClass("ClassB", 0);
SootClass scC1 = generacteSceneClass("ClassC1", 0);
SootClass scC2 = generacteSceneClass("ClassC2", 0);
SootClass scD = generacteSceneClass("ClassD", 0);
SootClass scZ = generacteSceneClass("ClassZ", 0);
interfaceA.addInterface(interfaceB);
interfaceB.addInterface(interfaceC1);
interfaceB.addInterface(interfaceC2);
interfaceC1.addInterface(interfaceD);
scA.addInterface(interfaceA);
scB.addInterface(interfaceB);
scC1.addInterface(interfaceC1);
scC2.addInterface(interfaceC2);
scD.addInterface(interfaceD);
FastHierarchy fh = s.getOrMakeFastHierarchy();
// A sc6 is not an interface -> empty result
assertEquals(Collections.emptySet(), fh.getAllImplementersOfInterface(scZ));
assertThat(fh.getAllImplementersOfInterface(interfaceA), containsInAnyOrder(scA));
assertThat(fh.getAllImplementersOfInterface(interfaceB), containsInAnyOrder(scA, scB));
assertThat(fh.getAllImplementersOfInterface(interfaceC1), containsInAnyOrder(scA, scB, scC1));
assertThat(fh.getAllImplementersOfInterface(interfaceC2), containsInAnyOrder(scA, scB, scC2));
assertThat(fh.getAllImplementersOfInterface(interfaceD), containsInAnyOrder(scA, scB, scC1, scD));
}
private static class FastHierarchyForUnittest extends FastHierarchy {
@Override
public Set<SootClass> getAllSubinterfaces(SootClass parent) {
try {
// We add a delay to increase the chance of a concurrent access
Thread.sleep(100);
} catch (InterruptedException e) {
}
return super.getAllSubinterfaces(parent);
}
}
private static SootClass generacteSceneClass(String name, int modifier) {
SootClass sootClass = new SootClass(name, modifier);
Scene.v().addClass(sootClass);
SootClass objectClass = Scene.v().getObjectType().getSootClass();
sootClass.setSuperclass(objectClass);
return sootClass;
}
}