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/**
* Copyright (C) 2010-2018 Gordon Fraser, Andrea Arcuri and EvoSuite
* contributors
*
* This file is part of EvoSuite.
*
* EvoSuite 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 3.0 of the License, or
* (at your option) any later version.
*
* EvoSuite 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
* Lesser Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with EvoSuite. If not, see .
*/
/**
*
*/
package org.evosuite.setup;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Queue;
import java.util.Set;
import org.evosuite.Properties;
import org.evosuite.Properties.Criterion;
import org.evosuite.TestGenerationContext;
import org.evosuite.TimeController;
import org.evosuite.assertion.CheapPurityAnalyzer;
import org.evosuite.classpath.ResourceList;
import org.evosuite.instrumentation.testability.BooleanTestabilityTransformation;
import org.evosuite.rmi.ClientServices;
import org.evosuite.runtime.PrivateAccess;
import org.evosuite.runtime.classhandling.ModifiedTargetStaticFields;
import org.evosuite.runtime.javaee.injection.Injector;
import org.evosuite.runtime.mock.MockList;
import org.evosuite.runtime.sandbox.Sandbox;
import org.evosuite.runtime.util.Inputs;
import org.evosuite.seeding.CastClassAnalyzer;
import org.evosuite.seeding.CastClassManager;
import org.evosuite.seeding.ConstantPoolManager;
import org.evosuite.setup.PutStaticMethodCollector.MethodIdentifier;
import org.evosuite.setup.callgraph.CallGraph;
import org.evosuite.statistics.RuntimeVariable;
import org.evosuite.utils.ArrayUtil;
import org.evosuite.utils.generic.GenericAccessibleObject;
import org.evosuite.utils.generic.GenericClass;
import org.evosuite.utils.generic.GenericConstructor;
import org.evosuite.utils.generic.GenericField;
import org.evosuite.utils.generic.GenericMethod;
import org.objectweb.asm.Type;
import org.objectweb.asm.tree.ClassNode;
import org.objectweb.asm.tree.InnerClassNode;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* @author Gordon Fraser
*
*/
public class TestClusterGenerator {
private static Logger logger = LoggerFactory.getLogger(TestClusterGenerator.class);
private final Set> dependencyCache = new LinkedHashSet<>();
private final Set genericCastClasses = new LinkedHashSet<>();
private final Set> concreteCastClasses = new LinkedHashSet<>();
private final Set> containerClasses = new LinkedHashSet<>();
private final Set dependencies = new LinkedHashSet();
private final Set analyzedAbstractClasses = new LinkedHashSet();
private final Set> analyzedClasses = new LinkedHashSet<>();
private final InheritanceTree inheritanceTree;
// -------- public methods -----------------
public TestClusterGenerator(InheritanceTree tree) {
inheritanceTree = tree;
}
public void generateCluster(CallGraph callGraph) throws RuntimeException, ClassNotFoundException {
TestCluster.setInheritanceTree(inheritanceTree);
if (Properties.INSTRUMENT_CONTEXT || ArrayUtil.contains(Properties.CRITERION, Criterion.DEFUSE)) {
for (String callTreeClass : callGraph.getClasses()) {
try {
if (callGraph.isCalledClass(callTreeClass)) {
if (!Properties.INSTRUMENT_LIBRARIES && !DependencyAnalysis.isTargetProject(callTreeClass))
continue;
TestGenerationContext.getInstance().getClassLoaderForSUT().loadClass(callTreeClass);
}
} catch (ClassNotFoundException e) {
logger.info("Class not found: " + callTreeClass + ": " + e);
}
}
}
dependencyCache.clear();
/*
* If we fail to load a class, we skip it, and avoid to try to load it
* again (which would result in extra unnecessary logging)
*/
Set blackList = new LinkedHashSet<>();
initBlackListWithEvoSuitePrimitives(blackList);
logger.info("Handling cast classes");
handleCastClasses();
logger.info("Initialising target class");
initializeTargetMethods();
logger.info("Resolving dependencies");
resolveDependencies(blackList);
handleSpecialCases();
if (Properties.JEE) {
addInjectionDependencies(blackList);
}
logger.info("Removing unusable generators");
TestCluster.getInstance().removeUnusableGenerators();
if (logger.isDebugEnabled()) {
logger.debug(TestCluster.getInstance().toString());
}
gatherStatistics();
}
public void addNewDependencies(Collection> rawTypes) {
Inputs.checkNull(rawTypes);
Set blackList = new LinkedHashSet<>();
initBlackListWithEvoSuitePrimitives(blackList);
rawTypes.stream().forEach(c -> dependencies.add(new DependencyPair(0, new GenericClass(c).getRawClass())));
resolveDependencies(blackList);
}
// -----------------------------------------------------------------------------
private void addInjectionDependencies(Set blackList) {
Set> toAdd = new LinkedHashSet<>();
try {
analyzedClasses.stream().flatMap(c -> Injector.getAllFieldsToInject(c).stream()).map(f -> f.getType())
.forEach(t -> addInjectionRecursively(t, toAdd, blackList));
} catch(Throwable t) {
logger.warn("Error during initialisation of injection dependencies: "+t+", continuing anyway.");
}
toAdd.stream().forEach(c -> dependencies.add(new DependencyPair(0, new GenericClass(c).getRawClass())));
resolveDependencies(blackList);
}
private void addInjectionRecursively(Class target, Set> toAdd, Set blackList) {
if (toAdd.contains(target) || blackList.contains(target.getName())) {
return;
}
toAdd.add(target);
for (Field f : Injector.getAllFieldsToInject(target)) {
addInjectionRecursively(f.getType(), toAdd, blackList);
}
}
private void handleSpecialCases() {
if (Properties.P_REFLECTION_ON_PRIVATE > 0 && Properties.REFLECTION_START_PERCENT < 1) {
// Check if we should add
// PrivateAccess.callDefaultConstructorOfTheClassUnderTest()
Class target = Properties.getTargetClassAndDontInitialise();
Constructor constructor = null;
try {
constructor = target.getDeclaredConstructor();
} catch (NoSuchMethodException e) {
}
if (constructor != null && Modifier.isPrivate(constructor.getModifiers())
&& target.getDeclaredConstructors().length == 1
// Not enums
&& !target.isEnum()) {
Method m = null;
try {
m = PrivateAccess.class.getDeclaredMethod("callDefaultConstructorOfTheClassUnderTest");
} catch (NoSuchMethodException e) {
logger.error("Missing method: " + e.toString());
return;
}
GenericMethod gm = new GenericMethod(m, PrivateAccess.class);
// It is not really an environment method, but not sure how else
// to handle it...
TestCluster.getInstance().addEnvironmentTestCall(gm);
}
}
}
private void handleCastClasses() {
// If we include type seeding, then we analyze classes to find types in
// instanceof and cast instructions
if (Properties.SEED_TYPES) {
Set blackList = new LinkedHashSet<>();
initBlackListWithPrimitives(blackList);
Set classNames = new LinkedHashSet<>();
CastClassAnalyzer analyzer = new CastClassAnalyzer();
Map castMap = analyzer.analyze(Properties.TARGET_CLASS);
for (Entry castEntry : castMap.entrySet()) {
String className = castEntry.getKey().getClassName();
if (blackList.contains(className))
continue;
if (addCastClassDependencyIfAccessible(className, blackList)) {
CastClassManager.getInstance().addCastClass(className, castEntry.getValue());
classNames.add(castEntry.getKey().getClassName());
}
}
// If SEED_TYPES is false, only Object is a cast class
// logger.info("Handling cast classes");
// addCastClasses(classNames, blackList);
logger.debug("Cast classes used: " + classNames);
}
}
private void gatherStatistics() {
ClientServices.getInstance().getClientNode().trackOutputVariable(RuntimeVariable.Analyzed_Classes,
analyzedClasses.size());
ClientServices.getInstance().getClientNode().trackOutputVariable(RuntimeVariable.Generators,
TestCluster.getInstance().getGenerators().size());
ClientServices.getInstance().getClientNode().trackOutputVariable(RuntimeVariable.Modifiers,
TestCluster.getInstance().getModifiers().size());
}
private void initBlackListWithEvoSuitePrimitives(Set blackList) throws NullPointerException {
blackList.add("int");
blackList.add("short");
blackList.add("float");
blackList.add("double");
blackList.add("byte");
blackList.add("char");
blackList.add("boolean");
blackList.add("long");
blackList.add(java.lang.Enum.class.getName());
blackList.add(java.lang.String.class.getName());
blackList.add(java.lang.Class.class.getName());
blackList.add(java.lang.ThreadGroup.class.getName()); // may lead to EvoSuite killing all threads
}
private void initBlackListWithPrimitives(Set blackList) throws NullPointerException {
blackList.add("int");
blackList.add("short");
blackList.add("float");
blackList.add("double");
blackList.add("byte");
blackList.add("char");
blackList.add("boolean");
blackList.add("long");
}
private boolean addCastClassDependencyIfAccessible(String className, Set blackList) {
if (className.equals(java.lang.String.class.getName()))
return true;
if (blackList.contains(className)) {
logger.info("Cast class in blacklist: " + className);
return false;
}
try {
Class clazz = TestGenerationContext.getInstance().getClassLoaderForSUT().loadClass(className);
if (!TestUsageChecker.canUse(clazz)) {
logger.debug("Cannot use cast class: " + className);
return false;
}
// boolean added =
addDependency(new GenericClass(clazz), 1);
genericCastClasses.add(new GenericClass(clazz));
concreteCastClasses.add(clazz);
blackList.add(className);
return true;
} catch (ClassNotFoundException e) {
logger.error("Problem for " + Properties.TARGET_CLASS + ". Class not found", e);
blackList.add(className);
return false;
}
}
/**
* Continue adding generators for classes that are needed
*/
private void resolveDependencies(Set blackList) {
while (!dependencies.isEmpty() && TimeController.getInstance().isThereStillTimeInThisPhase()) {
logger.debug("Dependencies left: {}", dependencies.size());
Iterator iterator = dependencies.iterator();
DependencyPair dependency = iterator.next();
iterator.remove();
if (analyzedClasses.contains(dependency.getDependencyClass().getRawClass())) {
continue;
}
String className = dependency.getDependencyClass().getClassName();
if (blackList.contains(className)) {
continue;
}
boolean added = false;
/*
* if (dependency.getDependencyClass().isParameterizedType()) { for
* (List parameterTypes :
* getAssignableTypes(dependency.getDependencyClass())) {
* GenericClass copy = new GenericClass(
* dependency.getDependencyClass().getType());
* copy.setParameterTypes(parameterTypes); boolean success =
* addDependencyClass(copy, dependency.getRecursion()); if (success)
* added = true; } } else
*/
added = addDependencyClass(dependency.getDependencyClass(), dependency.getRecursion());
if (!added) {
blackList.add(className);
}
// }
}
}
private void addDeclaredClasses(Set> targetClasses, Class currentClass) {
for (Class c : currentClass.getDeclaredClasses()) {
logger.info("Adding declared class " + c);
targetClasses.add(c);
addDeclaredClasses(targetClasses, c);
}
}
private boolean isInterfaceWithDefaultMethods(Class clazz) {
if(!clazz.isInterface()) {
return false;
}
for(Method m : clazz.getDeclaredMethods()) {
if(m.isDefault()) {
return true;
}
}
return false;
}
/**
* All public methods defined directly in the SUT should be covered
*
* TODO: What if we use instrument_parent?
*
*/
@SuppressWarnings("unchecked")
private void initializeTargetMethods() throws RuntimeException, ClassNotFoundException {
logger.info("Analyzing target class");
Class targetClass = Properties.getTargetClassAndDontInitialise();
TestCluster cluster = TestCluster.getInstance();
Set> targetClasses = new LinkedHashSet>();
if (targetClass == null) {
throw new RuntimeException("Failed to load " + Properties.TARGET_CLASS);
}
targetClasses.add(targetClass);
addDeclaredClasses(targetClasses, targetClass);
if ((!targetClass.isInterface() && Modifier.isAbstract(targetClass.getModifiers())) || isInterfaceWithDefaultMethods(targetClass)) {
logger.info("SUT is an abstract class");
Set> subclasses = ConcreteClassAnalyzer.getInstance().getConcreteClasses(targetClass,
inheritanceTree);
logger.info("Found " + subclasses.size() + " concrete subclasses");
targetClasses.addAll(subclasses);
}
// To make sure we also have anonymous inner classes double check inner
// classes using ASM
// because the loop changes 'targetClasses' set we cannot iterate over
// it, not even
// using an iterator. a simple workaround is to create a temporary set
// with the content
// of 'targetClasses' and iterate that one
Set> tmp_targetClasses = new LinkedHashSet>(targetClasses);
for (Class _targetClass : tmp_targetClasses) {
ClassNode targetClassNode = DependencyAnalysis.getClassNode(_targetClass.getName());
Queue innerClasses = new LinkedList();
innerClasses.addAll(targetClassNode.innerClasses);
while (!innerClasses.isEmpty()) {
InnerClassNode icn = innerClasses.poll();
try {
logger.debug("Loading inner class: " + icn.innerName + ", " + icn.name + "," + icn.outerName);
String innerClassName = ResourceList.getClassNameFromResourcePath(icn.name);
if(!innerClassName.startsWith(Properties.TARGET_CLASS)) {
// TODO: Why does ASM report inner classes that are not actually inner classes?
// Let's ignore classes that don't start with the SUT name for now.
logger.debug("Ignoring inner class that is outside SUT {}", innerClassName);
continue;
}
Class innerClass = TestGenerationContext.getInstance().getClassLoaderForSUT()
.loadClass(innerClassName);
// if (!canUse(innerClass))
// continue;
// Sometimes strange things appear such as Map$Entry
if (!targetClasses.contains(innerClass)
/*
* FIXME: why all the checks were removed? without
* the following, for example
* com.google.javascript.jscomp.IdMappingUtil in
* 124_closure-compiler is not testable
*/
&& !innerClassName.contains("Map$Entry")) {
// && !innerClassName.matches(".*\\$\\d+(\\$.*)?$")) {
logger.info("Adding inner class {}", innerClassName);
targetClasses.add(innerClass);
ClassNode innerClassNode = DependencyAnalysis.getClassNode(innerClassName);
innerClasses.addAll(innerClassNode.innerClasses);
}
} catch (Throwable t) {
logger.error("Problem for " + Properties.TARGET_CLASS + ". Error loading inner class: "
+ icn.innerName + ", " + icn.name + "," + icn.outerName + ": " + t);
}
}
}
for (Class clazz : targetClasses) {
logger.info("Current SUT class: " + clazz);
if (!TestUsageChecker.canUse(clazz)) {
logger.info("Cannot access SUT class: " + clazz);
continue;
}
// Add all constructors
for (Constructor constructor : TestClusterUtils.getConstructors(clazz)) {
logger.info("Checking target constructor " + constructor);
String name = "" + org.objectweb.asm.Type.getConstructorDescriptor(constructor);
if (Properties.TT) {
String orig = name;
name = BooleanTestabilityTransformation.getOriginalNameDesc(clazz.getName(), "",
org.objectweb.asm.Type.getConstructorDescriptor(constructor));
if (!orig.equals(name))
logger.info("TT name: " + orig + " -> " + name);
}
if (TestUsageChecker.canUse(constructor)) {
GenericConstructor genericConstructor = new GenericConstructor(constructor, clazz);
if (constructor.getDeclaringClass().equals(clazz))
cluster.addTestCall(genericConstructor);
// TODO: Add types!
cluster.addGenerator(new GenericClass(clazz), // .getWithWildcardTypes(),
genericConstructor);
addDependencies(genericConstructor, 1);
logger.debug("Keeping track of " + constructor.getDeclaringClass().getName() + "."
+ constructor.getName() + org.objectweb.asm.Type.getConstructorDescriptor(constructor));
} else {
logger.debug("Constructor cannot be used: " + constructor);
}
}
// Add all methods
for (Method method : TestClusterUtils.getMethods(clazz)) {
logger.info("Checking target method " + method);
String name = method.getName() + org.objectweb.asm.Type.getMethodDescriptor(method);
if (Properties.TT) {
String orig = name;
name = BooleanTestabilityTransformation.getOriginalNameDesc(clazz.getName(), method.getName(),
org.objectweb.asm.Type.getMethodDescriptor(method));
if (!orig.equals(name))
logger.info("TT name: " + orig + " -> " + name);
}
if (TestUsageChecker.canUse(method, clazz)) {
logger.debug("Adding method " + clazz.getName() + "." + method.getName()
+ org.objectweb.asm.Type.getMethodDescriptor(method));
if(clazz.isInterface() && Modifier.isAbstract(method.getModifiers())) {
logger.debug("Not adding interface method {}", method);
continue;
}
GenericMethod genericMethod = new GenericMethod(method, clazz);
if (method.getDeclaringClass().equals(clazz))
cluster.addTestCall(genericMethod);
// This is now enabled, as the test calls are managed by the
// test archive
// However, there previously were concerns that:
// For SUT classes without impure methods
// this can affect the chances of covering the targets
// so for now we keep all pure methods.
// In the long run, covered methods maybe should be
// removed?
if (!CheapPurityAnalyzer.getInstance().isPure(method)) {
cluster.addModifier(new GenericClass(clazz), genericMethod);
}
addDependencies(genericMethod, 1);
GenericClass retClass = new GenericClass(method.getReturnType());
// For the CUT, we may want to use primitives and Object return types as generators
//if (!retClass.isPrimitive() && !retClass.isVoid() && !retClass.isObject())
if (!retClass.isVoid())
cluster.addGenerator(retClass, // .getWithWildcardTypes(),
genericMethod);
} else {
logger.debug("Method cannot be used: " + method);
// If we do reflection on private methods, we still need to consider dependencies
if(Properties.P_REFLECTION_ON_PRIVATE > 0 && method.getDeclaringClass().equals(clazz)) {
GenericMethod genericMethod = new GenericMethod(method, clazz);
addDependencies(genericMethod, 1);
}
}
}
for (Field field : TestClusterUtils.getFields(clazz)) {
logger.info("Checking target field " + field);
if (TestUsageChecker.canUse(field, clazz)) {
GenericField genericField = new GenericField(field, clazz);
addDependencies(genericField, 1);
cluster.addGenerator(new GenericClass(field.getGenericType()), // .getWithWildcardTypes(),
genericField);
logger.debug("Adding field " + field);
final boolean isFinalField = isFinalField(field);
if (!isFinalField) {
logger.debug("Is not final");
// Setting fields does not contribute to coverage, so we will only count it as a modifier
// if (field.getDeclaringClass().equals(clazz))
// cluster.addTestCall(new GenericField(field, clazz));
cluster.addModifier(new GenericClass(clazz), genericField);
} else {
logger.debug("Is final");
if (Modifier.isStatic(field.getModifiers()) && !field.getType().isPrimitive()) {
logger.debug("Is static non-primitive");
/*
* With this we are trying to cover such cases:
*
* public static final DurationField INSTANCE = new
* MillisDurationField();
*
* private MillisDurationField() { super(); }
*/
try {
Object o = field.get(null);
if (o == null) {
logger.info("Field is not yet initialized: " + field);
} else {
Class actualClass = o.getClass();
logger.debug("Actual class is " + actualClass);
if (!actualClass.isAssignableFrom(genericField.getRawGeneratedType())
&& genericField.getRawGeneratedType().isAssignableFrom(actualClass)) {
GenericField superClassField = new GenericField(field, clazz);
cluster.addGenerator(new GenericClass(actualClass), superClassField);
}
}
} catch (IllegalAccessException e) {
logger.error(e.getMessage());
}
}
}
} else {
logger.debug("Can't use field " + field);
// If reflection on private is used, we still need to make sure dependencies are handled
// TODO: Duplicate code here
if(Properties.P_REFLECTION_ON_PRIVATE > 0) {
if(Modifier.isPrivate(field.getModifiers())
&& !field.isSynthetic()
&& !field.getName().equals("serialVersionUID")
// primitives cannot be changed
&& !(field.getType().isPrimitive())
// changing final strings also doesn't make much sense
&& !(Modifier.isFinal(field.getModifiers()) && field.getType().equals(String.class))
//static fields lead to just too many problems... although this could be set as a parameter
&& !Modifier.isStatic(field.getModifiers())
) {
GenericField genericField = new GenericField(field, clazz);
addDependencies(genericField, 1);
}
}
}
}
analyzedClasses.add(clazz);
// TODO: Set to generic type rather than class?
cluster.getAnalyzedClasses().add(clazz);
}
if (Properties.INSTRUMENT_PARENT) {
for (String superClass : inheritanceTree.getSuperclasses(Properties.TARGET_CLASS)) {
try {
Class superClazz = TestGenerationContext.getInstance().getClassLoaderForSUT()
.loadClass(superClass);
dependencies.add(new DependencyPair(0, superClazz));
} catch (ClassNotFoundException e) {
logger.error("Problem for " + Properties.TARGET_CLASS + ". Class not found: " + superClass, e);
}
}
}
if (Properties.HANDLE_STATIC_FIELDS) {
GetStaticGraph getStaticGraph = GetStaticGraphGenerator.generate(Properties.TARGET_CLASS);
Map> staticFields = getStaticGraph.getStaticFields();
for (String className : staticFields.keySet()) {
logger.info("Adding static fields to cluster for class " + className);
Class clazz;
try {
Sandbox.goingToExecuteUnsafeCodeOnSameThread();
clazz = TestClusterUtils.getClass(className);
} catch (ExceptionInInitializerError ex) {
logger.debug("Class class init caused exception " + className);
continue;
} finally {
Sandbox.doneWithExecutingUnsafeCodeOnSameThread();
}
if (clazz == null) {
logger.debug("Class not found " + className);
continue;
}
if (!TestUsageChecker.canUse(clazz))
continue;
Set fields = staticFields.get(className);
for (Field field : TestClusterUtils.getFields(clazz)) {
if (!TestUsageChecker.canUse(field, clazz))
continue;
if (fields.contains(field.getName())) {
if (!isFinalField(field)) {
logger.debug("Is not final");
// cluster.addTestCall(new GenericField(field, clazz));
// Count static field as modifier of SUT, not as test call:
GenericField genericField = new GenericField(field, clazz);
cluster.addModifier(new GenericClass(Properties.getTargetClassAndDontInitialise()), genericField);
}
}
}
}
PutStaticMethodCollector collector = new PutStaticMethodCollector(Properties.TARGET_CLASS, staticFields);
Set methodIdentifiers = collector.collectMethods();
for (MethodIdentifier methodId : methodIdentifiers) {
Class clazz = TestClusterUtils.getClass(methodId.getClassName());
if (clazz == null)
continue;
if (!TestUsageChecker.canUse(clazz))
continue;
Method method = TestClusterUtils.getMethod(clazz, methodId.getMethodName(), methodId.getDesc());
if (method == null)
continue;
GenericMethod genericMethod = new GenericMethod(method, clazz);
// Setting static fields is a modifier of a SUT
// cluster.addTestCall(genericMethod);
cluster.addModifier(new GenericClass(Properties.getTargetClassAndDontInitialise()), genericMethod);
}
}
logger.info("Finished analyzing target class");
}
/**
* This method returns is a given field is final or not.
* Since we might have removed the final modifier
* during our instrumentation, we also check the list of those
* static fields we have modified during the instrumentation.
*
* @param field field to check
* @return
*/
public static boolean isFinalField(Field field) {
if (Properties.RESET_STATIC_FINAL_FIELDS) {
if (Modifier.isFinal(field.getModifiers())) {
return true;
} else {
String fieldName = field.getName();
final boolean isModifiedStaticField = ModifiedTargetStaticFields.getInstance().containsField(fieldName);
return isModifiedStaticField;
}
} else {
final boolean isFinalField = Modifier.isFinal(field.getModifiers());
return isFinalField;
}
}
private void addDependencies(GenericConstructor constructor, int recursionLevel) {
if (recursionLevel > Properties.CLUSTER_RECURSION) {
logger.debug("Maximum recursion level reached, not adding dependencies of {}", constructor);
return;
}
if (dependencyCache.contains(constructor)) {
return;
}
logger.debug("Analyzing dependencies of " + constructor);
dependencyCache.add(constructor);
for (java.lang.reflect.Type parameterClass : constructor.getRawParameterTypes()) {
logger.debug("Adding dependency " + parameterClass);
addDependency(new GenericClass(parameterClass), recursionLevel);
}
}
private void addDependencies(GenericMethod method, int recursionLevel) {
if (recursionLevel > Properties.CLUSTER_RECURSION) {
logger.debug("Maximum recursion level reached, not adding dependencies of {}", method);
return;
}
if (dependencyCache.contains(method)) {
return;
}
logger.debug("Analyzing dependencies of " + method);
dependencyCache.add(method);
for (java.lang.reflect.Type parameter : method.getRawParameterTypes()) {
logger.debug("Current parameter " + parameter);
GenericClass parameterClass = new GenericClass(parameter);
if (parameterClass.isPrimitive() || parameterClass.isString())
continue;
logger.debug("Adding dependency " + parameterClass.getClassName());
addDependency(parameterClass, recursionLevel);
}
// If mocking is enabled, also return values are dependencies
// as we might attempt to mock the method
//
// Only look at the return values of direct dependencies as the
// number of dependencies otherwise might explode
if (Properties.P_FUNCTIONAL_MOCKING > 0 && recursionLevel == 1) {
GenericClass returnClass = method.getGeneratedClass();
if (!returnClass.isPrimitive() && !returnClass.isString())
addDependency(returnClass, recursionLevel);
}
}
private void addDependencies(GenericField field, int recursionLevel) {
if (recursionLevel > Properties.CLUSTER_RECURSION) {
logger.debug("Maximum recursion level reached, not adding dependencies of {}", field);
return;
}
if (dependencyCache.contains(field)) {
return;
}
if (field.getField().getType().isPrimitive() || field.getField().getType().equals(String.class))
return;
logger.debug("Analyzing dependencies of " + field);
dependencyCache.add(field);
logger.debug("Adding dependency " + field.getName());
addDependency(new GenericClass(field.getGenericFieldType()), recursionLevel);
}
private void addDependency(GenericClass clazz, int recursionLevel) {
clazz = clazz.getRawGenericClass();
if (analyzedClasses.contains(clazz.getRawClass()))
return;
if (clazz.isPrimitive())
return;
if (clazz.isString())
return;
if (clazz.getRawClass().equals(Enum.class))
return;
if (clazz.isArray()) {
addDependency(new GenericClass(clazz.getComponentType()), recursionLevel);
return;
}
if (!TestUsageChecker.canUse(clazz.getRawClass()))
return;
Class mock = MockList.getMockClass(clazz.getRawClass().getCanonicalName());
if (mock != null) {
/*
* If we are mocking this class, then such class should not be used
* in the generated JUnit test cases, but rather its mock.
*/
logger.debug("Adding mock {} instead of {}", mock, clazz);
clazz = new GenericClass(mock);
} else {
if (!TestClusterUtils.checkIfCanUse(clazz.getClassName())) {
return;
}
}
for (DependencyPair pair : dependencies) {
if (pair.getDependencyClass().equals(clazz)) {
return;
}
}
if (analyzedAbstractClasses.contains(clazz)) {
return;
}
logger.debug("Getting concrete classes for " + clazz.getClassName());
ConstantPoolManager.getInstance().addNonSUTConstant(Type.getType(clazz.getRawClass()));
List> actualClasses = new ArrayList<>(
ConcreteClassAnalyzer.getInstance().getConcreteClasses(clazz.getRawClass(), inheritanceTree));
// Randomness.shuffle(actualClasses);
logger.debug("Concrete classes for " + clazz.getClassName() + ": " + actualClasses.size());
// dependencies.add(new Pair(recursionLevel,
// Randomness.choice(actualClasses)));
analyzedAbstractClasses.add(clazz);
for (Class targetClass : actualClasses) {
logger.debug("Adding concrete class: " + targetClass);
dependencies.add(new DependencyPair(recursionLevel, targetClass));
// if(++num >= Properties.NUM_CONCRETE_SUBTYPES)
// break;
}
}
private boolean addDependencyClass(GenericClass clazz, int recursionLevel) {
if (recursionLevel > Properties.CLUSTER_RECURSION) {
logger.debug("Maximum recursion level reached, not adding dependency {}", clazz.getClassName());
return false;
}
clazz = clazz.getRawGenericClass();
if (analyzedClasses.contains(clazz.getRawClass())) {
return true;
}
analyzedClasses.add(clazz.getRawClass());
// We keep track of generic containers in case we find other concrete
// generic components during runtime
if (clazz.isAssignableTo(Collection.class) || clazz.isAssignableTo(Map.class)) {
if (clazz.getNumParameters() > 0) {
containerClasses.add(clazz.getRawClass());
}
}
if (clazz.isString()) {
return false;
}
try {
TestCluster cluster = TestCluster.getInstance();
logger.debug("Adding dependency class " + clazz.getClassName());
// TODO: Should we include declared classes as well?
if (!TestUsageChecker.canUse(clazz.getRawClass())) {
logger.info("*** Cannot use class: " + clazz.getClassName());
return false;
}
// Add all constructors
for (Constructor constructor : TestClusterUtils.getConstructors(clazz.getRawClass())) {
String name = "" + org.objectweb.asm.Type.getConstructorDescriptor(constructor);
if (Properties.TT) {
String orig = name;
name = BooleanTestabilityTransformation.getOriginalNameDesc(clazz.getClassName(), "",
org.objectweb.asm.Type.getConstructorDescriptor(constructor));
if (!orig.equals(name))
logger.info("TT name: " + orig + " -> " + name);
}
if (TestUsageChecker.canUse(constructor)) {
GenericConstructor genericConstructor = new GenericConstructor(constructor, clazz);
try {
cluster.addGenerator(clazz, // .getWithWildcardTypes(),
genericConstructor);
addDependencies(genericConstructor, recursionLevel + 1);
if (logger.isDebugEnabled()) {
logger.debug("Keeping track of " + constructor.getDeclaringClass().getName() + "."
+ constructor.getName()
+ org.objectweb.asm.Type.getConstructorDescriptor(constructor));
}
} catch (Throwable t) {
logger.info("Error adding constructor {}: {}", constructor.getName(), t.getMessage());
}
} else {
logger.debug("Constructor cannot be used: {}", constructor);
}
}
// Add all methods
for (Method method : TestClusterUtils.getMethods(clazz.getRawClass())) {
String name = method.getName() + org.objectweb.asm.Type.getMethodDescriptor(method);
if (Properties.TT) {
String orig = name;
name = BooleanTestabilityTransformation.getOriginalNameDesc(clazz.getClassName(), method.getName(),
org.objectweb.asm.Type.getMethodDescriptor(method));
if (!orig.equals(name))
logger.info("TT name: " + orig + " -> " + name);
}
if (TestUsageChecker.canUse(method, clazz.getRawClass()) && !method.getName().equals("hashCode")) {
logger.debug("Adding method " + clazz.getClassName() + "." + method.getName()
+ org.objectweb.asm.Type.getMethodDescriptor(method));
// TODO: Generic methods cause some troubles, but
// if (method.getTypeParameters().length > 0) {
// logger.info("Type parameters in methods are not handled yet, skipping " + method);
// continue;
// }
GenericMethod genericMethod = new GenericMethod(method, clazz);
try {
addDependencies(genericMethod, recursionLevel + 1);
if (!Properties.PURE_INSPECTORS) {
cluster.addModifier(new GenericClass(clazz), genericMethod);
} else {
if (!CheapPurityAnalyzer.getInstance().isPure(method)) {
cluster.addModifier(new GenericClass(clazz), genericMethod);
}
}
GenericClass retClass = new GenericClass(method.getReturnType());
// Only use as generator if its not any of the types with special treatment
if (!retClass.isPrimitive() && !retClass.isVoid() && !retClass.isObject() && !retClass.isString()) {
cluster.addGenerator(retClass, // .getWithWildcardTypes(),
genericMethod);
}
} catch (Throwable t) {
logger.info("Error adding method " + method.getName() + ": " + t.getMessage());
}
} else {
logger.debug("Method cannot be used: " + method);
}
}
// Add all fields
for (Field field : TestClusterUtils.getFields(clazz.getRawClass())) {
logger.debug("Checking field " + field);
if (TestUsageChecker.canUse(field, clazz.getRawClass())) {
logger.debug("Adding field " + field + " for class " + clazz);
try {
GenericField genericField = new GenericField(field, clazz);
GenericClass retClass = new GenericClass(field.getType());
// Only use as generator if its not any of the types with special treatment
if(!retClass.isPrimitive() && !retClass.isObject() && !retClass.isString())
cluster.addGenerator(new GenericClass(field.getGenericType()), genericField);
final boolean isFinalField = isFinalField(field);
if (!isFinalField) {
cluster.addModifier(clazz, // .getWithWildcardTypes(),
genericField);
addDependencies(genericField, recursionLevel + 1);
}
} catch (Throwable t) {
logger.info("Error adding field " + field.getName() + ": " + t.getMessage());
}
} else {
logger.debug("Field cannot be used: " + field);
}
}
logger.info("Finished analyzing " + clazz.getTypeName() + " at recursion level " + recursionLevel);
cluster.getAnalyzedClasses().add(clazz.getRawClass());
} catch (Throwable t) {
/*
* NOTE: this is a problem we know it can happen in some cases in
* SF110, but don't have a real solution now. As it is bound to
* happen, we try to minimize the logging (eg no stack trace),
* although we still need to log it
*/
logger.error("Problem for " + Properties.TARGET_CLASS + ". Failed to add dependencies for class "
+ clazz.getClassName() + ": " + t + "\n" + Arrays.asList(t.getStackTrace()));
return false;
}
return true;
}
// ----------------------
// unused old methods
// ----------------------
private static Set> loadClasses(Collection classNames) {
Set> loadedClasses = new LinkedHashSet<>();
for (String subClass : classNames) {
try {
Class subClazz = Class.forName(subClass, false,
TestGenerationContext.getInstance().getClassLoaderForSUT());
if (!TestUsageChecker.canUse(subClazz))
continue;
if (subClazz.isInterface())
continue;
if (Modifier.isAbstract(subClazz.getModifiers())) {
if (!TestClusterUtils.hasStaticGenerator(subClazz))
continue;
}
Class mock = MockList.getMockClass(subClazz.getCanonicalName());
if (mock != null) {
/*
* If we are mocking this class, then such class should not
* be used in the generated JUnit test cases, but rather its
* mock.
*/
// logger.debug("Adding mock " + mock + " instead of "
// + clazz);
subClazz = mock;
} else {
if (!TestClusterUtils.checkIfCanUse(subClazz.getCanonicalName())) {
continue;
}
}
loadedClasses.add(subClazz);
} catch (ClassNotFoundException e) {
logger.error("Problem for " + Properties.TARGET_CLASS + ". Class not found: " + subClass, e);
logger.error("Removing class from inheritance tree");
}
}
return loadedClasses;
}
// private Set> getConcreteClassesEnum() {
// Set> enumClasses = new LinkedHashSet>();
// for (String className : inheritanceTree.getSubclasses("java.lang.Enum"))
// {
// logger.warn("Enum candidate: " + className);
// }
//
// return enumClasses;
// }
private List> getAssignableTypes(GenericClass clazz) {
List> tuples = new ArrayList<>();
// logger.info("Parameters of " + clazz.getSimpleName() + ": "
// + clazz.getNumParameters());
boolean first = true;
for (java.lang.reflect.Type parameterType : clazz.getParameterTypes()) {
// logger.info("Current parameter: " + parameterType);
List assignableClasses = getAssignableTypes(parameterType);
List> newTuples = new ArrayList<>();
for (GenericClass concreteClass : assignableClasses) {
if (first) {
List tuple = new ArrayList<>();
tuple.add(concreteClass);
newTuples.add(tuple);
} else {
for (List t : tuples) {
List tuple = new ArrayList<>(t);
tuple.add(concreteClass);
newTuples.add(tuple);
}
}
}
tuples = newTuples;
first = false;
}
return tuples;
}
/**
* Update
*
* @param clazz
*/
private void addCastClassForContainer(Class clazz) {
if (concreteCastClasses.contains(clazz))
return;
concreteCastClasses.add(clazz);
// TODO: What if this is generic again?
genericCastClasses.add(new GenericClass(clazz));
CastClassManager.getInstance().addCastClass(clazz, 1);
TestCluster.getInstance().clearGeneratorCache(new GenericClass(clazz));
}
private List getAssignableTypes(java.lang.reflect.Type type) {
List types = new ArrayList<>();
for (GenericClass clazz : genericCastClasses) {
if (clazz.isAssignableTo(type)) {
logger.debug(clazz + " is assignable to " + type);
types.add(clazz);
}
}
return types;
}
}
