173 lines
5.8 KiB
Java
173 lines
5.8 KiB
Java
/*******************************************************************************
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* Copyright (c) 2002 - 2006 IBM Corporation.
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* which accompanies this distribution, and is available at
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* http://www.eclipse.org/legal/epl-v10.html
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*
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* Contributors:
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* IBM Corporation - initial API and implementation
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*******************************************************************************/
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package com.ibm.wala.core.tests.ir;
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import java.io.IOException;
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import org.junit.Assert;
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import org.junit.Test;
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import com.ibm.wala.cfg.ControlFlowGraph;
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import com.ibm.wala.classLoader.IMethod;
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import com.ibm.wala.classLoader.Language;
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import com.ibm.wala.core.tests.util.WalaTestCase;
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import com.ibm.wala.ipa.callgraph.AnalysisOptions;
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import com.ibm.wala.ipa.callgraph.IAnalysisCacheView;
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import com.ibm.wala.ipa.callgraph.impl.Everywhere;
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import com.ibm.wala.ipa.cha.ClassHierarchyException;
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import com.ibm.wala.ipa.cha.IClassHierarchy;
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import com.ibm.wala.ssa.IR;
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import com.ibm.wala.ssa.ISSABasicBlock;
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import com.ibm.wala.ssa.SSACFG;
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import com.ibm.wala.ssa.SSAInstruction;
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import com.ibm.wala.ssa.SSAOptions;
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import com.ibm.wala.types.MethodReference;
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import com.ibm.wala.util.debug.Assertions;
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import com.ibm.wala.util.graph.GraphIntegrity;
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import com.ibm.wala.util.graph.GraphIntegrity.UnsoundGraphException;
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import com.ibm.wala.util.intset.IntSet;
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import com.ibm.wala.util.strings.StringStuff;
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/**
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* Test integrity of CFGs
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*/
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public class CFGTest extends WalaTestCase {
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private final IClassHierarchy cha;
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protected CFGTest(IClassHierarchy cha) {
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this.cha = cha;
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}
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public CFGTest() throws ClassHierarchyException, IOException {
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this(WalaTestCase.makeCHA());
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}
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public static void main(String[] args) {
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justThisTest(CFGTest.class);
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}
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/**
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* Build an IR, then check integrity on two flavors of CFG
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*/
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private void doMethod(String methodSig) {
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try {
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MethodReference mr = StringStuff.makeMethodReference(Language.JAVA, methodSig);
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IMethod m = cha.resolveMethod(mr);
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if (m == null) {
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Assertions.UNREACHABLE("could not resolve " + mr);
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}
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AnalysisOptions options = new AnalysisOptions();
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options.getSSAOptions().setPiNodePolicy(SSAOptions.getAllBuiltInPiNodes());
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IAnalysisCacheView cache = makeAnalysisCache(options.getSSAOptions());
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IR ir = cache.getIR(m, Everywhere.EVERYWHERE);
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ControlFlowGraph<SSAInstruction, ISSABasicBlock> cfg = ir.getControlFlowGraph();
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try {
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GraphIntegrity.check(cfg);
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} catch (UnsoundGraphException e) {
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e.printStackTrace();
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System.err.println(ir);
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Assert.assertTrue(" failed cfg integrity check for " + methodSig, false);
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}
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try {
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GraphIntegrity.check(cfg);
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} catch (UnsoundGraphException e) {
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e.printStackTrace();
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System.err.println(ir);
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System.err.println(cfg);
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Assert.assertTrue(" failed 2-exit cfg integrity check for " + methodSig, false);
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}
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} catch (Exception e) {
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e.printStackTrace();
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Assertions.UNREACHABLE();
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}
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}
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/**
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* this method does not exist in 1.5 libraries @Test public void
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* testFDBigInt() {
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* doMethod("java.lang.FDBigInt.class$(Ljava/lang/String;)Ljava/lang/Class;");
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* }
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*/
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@Test
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public void testResolveProxyClass() {
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doMethod("java.io.ObjectInputStream.resolveProxyClass([Ljava/lang/String;)Ljava/lang/Class;");
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}
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@Test
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public void testIRCacheIdempotence() {
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MethodReference mr = StringStuff.makeMethodReference("hello.Hello.main([Ljava/lang/String;)V");
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IMethod m = cha.resolveMethod(mr);
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IAnalysisCacheView cache = makeAnalysisCache();
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IR irBefore = cache.getIR(m);
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cache.clear();
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IR irAfter = cache.getIR(m);
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for (int i = 0; i < irBefore.getInstructions().length; i++) {
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System.out.println(irBefore.getInstructions()[i]);
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System.out.println(irAfter.getInstructions()[i]);
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Assert.assertEquals(irAfter.getInstructions()[i], irBefore.getInstructions()[i]);
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}
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}
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@Test
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public void testSync1() {
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MethodReference mr = StringStuff.makeMethodReference("cfg.MonitorTest.sync1()V");
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IMethod m = cha.resolveMethod(mr);
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IAnalysisCacheView cache = makeAnalysisCache();
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IR ir = cache.getIR(m);
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System.out.println(ir);
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SSACFG controlFlowGraph = ir.getControlFlowGraph();
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Assert.assertEquals(1, controlFlowGraph.getSuccNodeCount(controlFlowGraph.getBlockForInstruction(21)));
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}
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@Test
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public void testSync2() {
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MethodReference mr = StringStuff.makeMethodReference("cfg.MonitorTest.sync2()V");
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IMethod m = cha.resolveMethod(mr);
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IAnalysisCacheView cache = makeAnalysisCache();
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IR ir = cache.getIR(m);
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System.out.println(ir);
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SSACFG controlFlowGraph = ir.getControlFlowGraph();
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IntSet succs = controlFlowGraph.getSuccNodeNumbers(controlFlowGraph.getBlockForInstruction(13));
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Assert.assertEquals(2, succs.size());
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Assert.assertTrue(succs.contains(6));
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Assert.assertTrue(succs.contains(7));
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}
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@Test
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public void testSync3() {
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MethodReference mr = StringStuff.makeMethodReference("cfg.MonitorTest.sync3()V");
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IMethod m = cha.resolveMethod(mr);
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IAnalysisCacheView cache = makeAnalysisCache();
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IR ir = cache.getIR(m);
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SSACFG controlFlowGraph = ir.getControlFlowGraph();
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Assert.assertEquals(1, controlFlowGraph.getSuccNodeCount(controlFlowGraph.getBlockForInstruction(33)));
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}
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public static void testCFG(SSACFG cfg, int[][] assertions) {
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for(int i = 0; i < assertions.length; i++) {
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SSACFG.BasicBlock bb= cfg.getNode(i);
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Assert.assertEquals("basic block " + i, assertions[i].length, cfg.getSuccNodeCount(bb));
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for(int j = 0; j < assertions[i].length; j++) {
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Assert.assertTrue(cfg.hasEdge(bb, cfg.getNode(assertions[i][j])));
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}
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}
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}
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}
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