/*
 * Copyright (c) 2006 IBM Corporation.
 * 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 com.ibm.wala.core.tests.callGraph;

import com.ibm.wala.core.tests.util.TestConstants;
import com.ibm.wala.core.tests.util.WalaTestCase;
import com.ibm.wala.ipa.callgraph.AnalysisCacheImpl;
import com.ibm.wala.ipa.callgraph.AnalysisOptions;
import com.ibm.wala.ipa.callgraph.AnalysisScope;
import com.ibm.wala.ipa.callgraph.CGNode;
import com.ibm.wala.ipa.callgraph.CallGraph;
import com.ibm.wala.ipa.callgraph.Entrypoint;
import com.ibm.wala.ipa.cha.ClassHierarchy;
import com.ibm.wala.ipa.cha.ClassHierarchyException;
import com.ibm.wala.ipa.cha.ClassHierarchyFactory;
import com.ibm.wala.types.ClassLoaderReference;
import com.ibm.wala.types.MethodReference;
import com.ibm.wala.types.TypeReference;
import com.ibm.wala.util.CancelException;
import java.io.IOException;
import org.junit.Assert;
import org.junit.Test;

/** Check properties of a call to clone() in RTA */
public class FinalizerTest extends WalaTestCase {

  @Test
  public void testFinalize()
      throws ClassHierarchyException, IllegalArgumentException, CancelException, IOException {

    AnalysisScope scope =
        CallGraphTestUtil.makeJ2SEAnalysisScope(
            TestConstants.WALA_TESTDATA, CallGraphTestUtil.REGRESSION_EXCLUSIONS);
    ClassHierarchy cha = ClassHierarchyFactory.make(scope);
    Iterable<Entrypoint> entrypoints =
        com.ibm.wala.ipa.callgraph.impl.Util.makeMainEntrypoints(cha, "Lfinalizers/Finalizers");
    AnalysisOptions options = CallGraphTestUtil.makeAnalysisOptions(scope, entrypoints);

    CallGraph cg = CallGraphTestUtil.buildZeroCFA(options, new AnalysisCacheImpl(), cha, false);

    // Find node corresponding to finalize
    TypeReference t =
        TypeReference.findOrCreate(ClassLoaderReference.Application, "Lfinalizers/Finalizers");
    MethodReference m = MethodReference.findOrCreate(t, "finalize", "()V");
    Assert.assertTrue("expect finalizer node", cg.getNodes(m).iterator().hasNext());
    CGNode node = cg.getNodes(m).iterator().next();

    // Check it's reachable from root
    Assert.assertTrue(
        "should have call site from root",
        cg.getPossibleSites(cg.getFakeRootNode(), node).hasNext());
  }
}
