149 lines
6.1 KiB
Java
149 lines
6.1 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.typeInference;
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import org.junit.AfterClass;
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import org.junit.Assert;
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import org.junit.BeforeClass;
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import org.junit.Test;
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import com.ibm.wala.analysis.typeInference.ConeType;
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import com.ibm.wala.analysis.typeInference.TypeAbstraction;
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import com.ibm.wala.analysis.typeInference.TypeInference;
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import com.ibm.wala.classLoader.ClassLoaderFactory;
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import com.ibm.wala.classLoader.ClassLoaderFactoryImpl;
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import com.ibm.wala.classLoader.IMethod;
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import com.ibm.wala.core.tests.util.TestConstants;
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import com.ibm.wala.core.tests.util.WalaTestCase;
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import com.ibm.wala.ipa.callgraph.AnalysisCache;
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import com.ibm.wala.ipa.callgraph.AnalysisOptions;
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import com.ibm.wala.ipa.callgraph.AnalysisScope;
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import com.ibm.wala.ipa.callgraph.impl.Everywhere;
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import com.ibm.wala.ipa.cha.ClassHierarchy;
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import com.ibm.wala.ipa.cha.ClassHierarchyException;
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import com.ibm.wala.ssa.IR;
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import com.ibm.wala.types.MethodReference;
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import com.ibm.wala.util.config.AnalysisScopeReader;
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import com.ibm.wala.util.io.FileProvider;
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import com.ibm.wala.util.strings.Atom;
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import com.ibm.wala.util.strings.ImmutableByteArray;
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import com.ibm.wala.util.strings.UTF8Convert;
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import com.ibm.wala.util.warnings.Warnings;
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/**
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* Test that the SSA-numbering of variables in the IR is deterministic.
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*
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* Introduced 05-AUG-03; the default implementation of hashCode was being
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* invoked. Object.hashCode is a source of random numbers and has no place in a
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* deterministic program.
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*/
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public class TypeInferenceTest extends WalaTestCase {
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private static final ClassLoader MY_CLASSLOADER = TypeInferenceTest.class.getClassLoader();
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private static AnalysisScope scope;
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private static ClassHierarchy cha;
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private static AnalysisOptions options;
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private static AnalysisCache cache;
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public static void main(String[] args) {
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justThisTest(TypeInferenceTest.class);
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}
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@BeforeClass
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public static void beforeClass() throws Exception {
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scope = AnalysisScopeReader.readJavaScope(TestConstants.WALA_TESTDATA, (new FileProvider()).getFile("J2SEClassHierarchyExclusions.txt"), MY_CLASSLOADER);
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options = new AnalysisOptions(scope, null);
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cache = new AnalysisCache();
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ClassLoaderFactory factory = new ClassLoaderFactoryImpl(scope.getExclusions());
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try {
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cha = ClassHierarchy.make(scope, factory);
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} catch (ClassHierarchyException e) {
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throw new Exception();
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}
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}
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@AfterClass
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public static void afterClass() throws Exception {
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Warnings.clear();
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scope = null;
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cha = null;
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options = null;
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cache = null;
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}
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@Test public void test1() {
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MethodReference method = scope.findMethod(AnalysisScope.APPLICATION, "LtypeInference/TI", Atom.findOrCreateUnicodeAtom("foo"),
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new ImmutableByteArray(UTF8Convert.toUTF8("()V")));
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Assert.assertNotNull("method not found", method);
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IMethod imethod = cha.resolveMethod(method);
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Assert.assertNotNull("imethod not found", imethod);
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IR ir = cache.getIRFactory().makeIR(imethod, Everywhere.EVERYWHERE, options.getSSAOptions());
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System.out.println(ir);
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TypeInference ti = TypeInference.make(ir, false);
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for (int i = 1; i <= ir.getSymbolTable().getMaxValueNumber(); i++) {
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System.err.println(i + " " + ti.getType(i));
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}
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}
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@Test public void test2() {
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MethodReference method = scope.findMethod(AnalysisScope.APPLICATION, "LtypeInference/TI", Atom.findOrCreateUnicodeAtom("bar"),
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new ImmutableByteArray(UTF8Convert.toUTF8("(I)V")));
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Assert.assertNotNull("method not found", method);
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IMethod imethod = cha.resolveMethod(method);
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Assert.assertNotNull("imethod not found", imethod);
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IR ir = cache.getIRFactory().makeIR(imethod, Everywhere.EVERYWHERE, options.getSSAOptions());
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System.out.println(ir);
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TypeInference ti = TypeInference.make(ir, true);
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Assert.assertNotNull("null type abstraction for parameter", ti.getType(2));
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}
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@Test public void test3() {
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MethodReference method = scope.findMethod(AnalysisScope.APPLICATION, "LtypeInference/TI", Atom.findOrCreateUnicodeAtom("inferInt"),
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new ImmutableByteArray(UTF8Convert.toUTF8("()V")));
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Assert.assertNotNull("method not found", method);
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IMethod imethod = cha.resolveMethod(method);
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Assert.assertNotNull("imethod not found", imethod);
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IR ir = cache.getIRFactory().makeIR(imethod, Everywhere.EVERYWHERE, options.getSSAOptions());
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System.out.println(ir);
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TypeInference ti = TypeInference.make(ir, true);
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TypeAbstraction type = ti.getType(7);
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Assert.assertNotNull("null type abstraction", type);
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Assert.assertTrue("inferred wrong type", type.toString().equals("int"));
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}
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@Test public void test4() {
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MethodReference method = scope.findMethod(AnalysisScope.APPLICATION, "LtypeInference/TI", Atom.findOrCreateUnicodeAtom("useCast"),
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new ImmutableByteArray(UTF8Convert.toUTF8("(Ljava/lang/Object;)V")));
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Assert.assertNotNull("method not found", method);
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IMethod imethod = cha.resolveMethod(method);
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Assert.assertNotNull("imethod not found", imethod);
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IR ir = cache.getIRFactory().makeIR(imethod, Everywhere.EVERYWHERE, options.getSSAOptions());
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System.out.println(ir);
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TypeInference ti = TypeInference.make(ir, false);
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TypeAbstraction type = ti.getType(4);
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Assert.assertNotNull("null type abstraction", type);
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Assert.assertTrue("inferred wrong type " + type, type instanceof ConeType && ((ConeType)type).getTypeReference().getName().toString().equals("Ljava/lang/String"));
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}
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}
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