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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.testcarver.testcase;
import java.lang.reflect.Array;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Queue;
import java.util.Set;
import org.apache.commons.lang3.reflect.FieldUtils;
import org.evosuite.Properties;
import org.evosuite.TestGenerationContext;
import org.evosuite.classpath.ResourceList;
import org.evosuite.testcarver.capture.CaptureLog;
import org.evosuite.testcarver.capture.CaptureUtil;
import org.evosuite.testcarver.codegen.ICodeGenerator;
import org.evosuite.testcase.variable.ArrayIndex;
import org.evosuite.testcase.variable.ArrayReference;
import org.evosuite.testcase.variable.FieldReference;
import org.evosuite.testcase.variable.NullReference;
import org.evosuite.testcase.TestCase;
import org.evosuite.testcase.variable.VariableReference;
import org.evosuite.testcase.statements.ArrayStatement;
import org.evosuite.testcase.statements.AssignmentStatement;
import org.evosuite.testcase.statements.ClassPrimitiveStatement;
import org.evosuite.testcase.statements.ConstructorStatement;
import org.evosuite.testcase.statements.FieldStatement;
import org.evosuite.testcase.statements.ImmutableStringPrimitiveStatement;
import org.evosuite.testcase.statements.MethodStatement;
import org.evosuite.testcase.statements.NullStatement;
import org.evosuite.testcase.statements.PrimitiveStatement;
import org.evosuite.utils.generic.GenericConstructor;
import org.evosuite.utils.generic.GenericField;
import org.evosuite.utils.generic.GenericMethod;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public final class EvoTestCaseCodeGenerator implements ICodeGenerator {
private static final Logger logger = LoggerFactory.getLogger(EvoTestCaseCodeGenerator.class);
//--- source generation
private TestCase testCase;
private final Map oidToVarRefMap;
public EvoTestCaseCodeGenerator() {
this.oidToVarRefMap = new HashMap<>();
}
@Override
public boolean isMaximumLengthReached() {
return testCase.size() > Properties.CHROMOSOME_LENGTH;
}
@Override
public void createMethodCallStmt(final CaptureLog log, final int logRecNo) {
if(log == null)
throw new IllegalArgumentException("captured log must not be null");
if(logRecNo <= -1)
throw new IllegalArgumentException("log record number is invalid: " + logRecNo);
if(isMaximumLengthReached())
return;
// assumption: all necessary statements are created and there is one variable for each referenced object
final int oid = log.objectIds.get(logRecNo);
final Object[] methodArgs = log.params.get(logRecNo);
final String methodName = log.methodNames.get(logRecNo);
Class type;
try {
final String typeName = log.getTypeName(oid);
type = getClassForName(typeName);
logger.debug("Creating method call statement for call to method {}.{}", typeName, methodName);
final Class[] methodParamTypeClasses = getMethodParamTypeClasses(log, logRecNo);
final ArrayList args = getArguments(methodArgs,
methodParamTypeClasses);
if (CaptureLog.OBSERVED_INIT.equals(methodName)) {
// Person var0 = new Person();
final ConstructorStatement constStmt = new ConstructorStatement(
testCase,
new GenericConstructor(
type.getDeclaredConstructor(methodParamTypeClasses), type),
args);
this.oidToVarRefMap.put(oid, testCase.addStatement(constStmt));
} else {
//------------------ handling for ordinary method calls e.g. var1 = var0.doSth();
final Object returnValue = log.returnValues.get(logRecNo);
if (CaptureLog.RETURN_TYPE_VOID.equals(returnValue)) {
GenericMethod genericMethod = new GenericMethod(
this.getDeclaredMethod(type, methodName,
methodParamTypeClasses)
, type);
MethodStatement m = new MethodStatement(testCase, genericMethod,
this.oidToVarRefMap.get(oid), args);
testCase.addStatement(m);
} else {
// final org.objectweb.asm.Type returnType = org.objectweb.asm.Type.getReturnType(methodDesc);
logger.debug("Callee: {} ({})", this.oidToVarRefMap.get(oid), this.oidToVarRefMap.keySet());
// Person var0 = var.getPerson();
final MethodStatement m = new MethodStatement(
testCase,
new GenericMethod(
this.getDeclaredMethod(type, methodName,
methodParamTypeClasses), type),
this.oidToVarRefMap.get(oid),
args);
final Integer returnValueOID = (Integer) returnValue;
this.oidToVarRefMap.put(returnValueOID, testCase.addStatement(m));
}
}
} catch(NoSuchMethodException e) {
logger.info("Method not found; this may happen e.g. if an exception is thrown in the constructor");
return;
} catch (final Exception e) {
logger.info("Error at log record number {}: {}", logRecNo, e.toString());
logger.info("Test case so far: "+testCase.toCode());
logger.info(log.toString());
CodeGeneratorException.propagateError(e, "[logRecNo = %s] - an unexpected error occurred while creating method call stmt for %s.", logRecNo, methodName);
}
}
private Class[] getMethodParamTypeClasses(CaptureLog log, int logRecNo) {
final String methodDesc = log.descList.get(logRecNo);
final org.objectweb.asm.Type[] methodParamTypes = org.objectweb.asm.Type.getArgumentTypes(methodDesc);
final Class[] methodParamTypeClasses = new Class[methodParamTypes.length];
for (int i = 0; i < methodParamTypes.length; i++) {
methodParamTypeClasses[i] = getClassFromType(methodParamTypes[i]);
}
return methodParamTypeClasses;
}
private ArrayList getArguments(final Object[] methodArgs,
final Class[] methodParamTypeClasses) throws IllegalArgumentException {
ArrayList args = new ArrayList();
Integer argOID; // is either an oid or null
for (int i = 0; i < methodArgs.length; i++) {
argOID = (Integer) methodArgs[i];
if (argOID == null) {
args.add(testCase.addStatement(new NullStatement(testCase,
methodParamTypeClasses[i])));
} else {
VariableReference ref = this.oidToVarRefMap.get(argOID);
if (ref == null) {
throw new RuntimeException("VariableReference is null for argOID "
+ argOID+"; have oids: "+this.oidToVarRefMap.keySet());
} else {
args.add(ref);
}
}
}
return args;
}
@SuppressWarnings({ "rawtypes", "unchecked" })
@Override
public void createPlainInitStmt(CaptureLog log, int logRecNo) {
// NOTE: PLAIN INIT: has always one non-null param
// TODO: use primitives
final int oid = log.objectIds.get(logRecNo);
if (this.oidToVarRefMap.containsKey(oid)) {
// TODO this might happen because of Integer.valueOf(), for example. . Is this approach ok?
return;
}
final String type = log.getTypeName(oid);
final Object value = log.params.get(logRecNo)[0];
final VariableReference varRef;
if (value instanceof Class) {
// final PrimitiveStatement cps = ClassPrimitiveStatement.getPrimitiveStatement(testCase, getClassForName(type));
final PrimitiveStatement cps = new ClassPrimitiveStatement(testCase,
getClassForName(type));
cps.setValue(value);
varRef = testCase.addStatement(cps);
} else {
final PrimitiveStatement primitiveValue = PrimitiveStatement.getPrimitiveStatement(testCase,
getClassForName(type));
primitiveValue.setValue(value);
varRef = testCase.addStatement(primitiveValue);
}
this.oidToVarRefMap.put(oid, varRef);
}
@SuppressWarnings({ "rawtypes" })
@Override
public void createUnobservedInitStmt(CaptureLog log, int logRecNo) {
// NOTE: PLAIN INIT: has always one non-null param
// TODO: use primitives
final int oid = log.objectIds.get(logRecNo);
try {
final Object value = log.params.get(logRecNo)[0];
final PrimitiveStatement stringRep = new ImmutableStringPrimitiveStatement(testCase, (String)value);
final VariableReference stringRepRef = testCase.addStatement(stringRep);
final MethodStatement m = new MethodStatement(testCase, new GenericMethod(EvoSuiteXStream.class.getMethod("fromString", new Class[] {String.class}), EvoSuiteXStream.class), null, Arrays.asList(stringRepRef));
this.oidToVarRefMap.put(oid, testCase.addStatement(m));
} catch (final Exception e) {
throw new RuntimeException(e);
}
}
@Override
public void createFieldWriteAccessStmt(CaptureLog log, int logRecNo) {
// assumption: all necessary statements are created and there is one variable for each referenced object
final Object[] methodArgs = log.params.get(logRecNo);
final int oid = log.objectIds.get(logRecNo);
final int captureId = log.captureIds.get(logRecNo);
final String fieldName = log.getNameOfAccessedFields(captureId);
final String typeName = log.getTypeName(oid);
try {
final Class type = getClassForName(typeName);
final String fieldDesc = log.descList.get(logRecNo);
final Class fieldType = CaptureUtil.getClassFromDesc(fieldDesc);
final FieldReference targetFieldRef = new FieldReference(testCase,
new GenericField(this.getDeclaredField(type, fieldName), type), this.oidToVarRefMap.get(oid));
final AssignmentStatement assignment;
final Integer arg = (Integer) methodArgs[0];
if (arg == null) {
final NullStatement nullStmt = new NullStatement(testCase, fieldType);
final VariableReference nullReference = testCase.addStatement(nullStmt);
assignment = new AssignmentStatement(testCase, targetFieldRef,
nullReference);
} else {
assignment = new AssignmentStatement(testCase, targetFieldRef,
this.oidToVarRefMap.get(arg));
}
final VariableReference varRef = testCase.addStatement(assignment);
logger.debug("Adding assignment statement: "+assignment.getCode());
if (arg != null) {
this.oidToVarRefMap.put(arg, varRef);
}
} catch (final Exception e) {
CodeGeneratorException.propagateError(e, "[logRecNo = %s] - an unexpected error occurred while creating field write access stmt. Log: %s", logRecNo, log);
}
}
@Override
public void createFieldReadAccessStmt(CaptureLog log, int logRecNo) {
// assumption: all necessary statements are created and there is one variable for reach referenced object
final int oid = log.objectIds.get(logRecNo);
final int captureId = log.captureIds.get(logRecNo);
final Object returnValue = log.returnValues.get(logRecNo);
if (!CaptureLog.RETURN_TYPE_VOID.equals(returnValue)) // TODO necessary?
{
Integer returnValueOID = (Integer) returnValue;
// final String descriptor = log.descList.get(logRecNo);
// final org.objectweb.asm.Type fieldTypeType = org.objectweb.asm.Type.getType(descriptor);
final String typeName = log.getTypeName(oid);
final String fieldName = log.getNameOfAccessedFields(captureId);
try {
// final Class fieldType = getClassFromType(fieldTypeType);
final Class type = getClassForName(typeName);
// final FieldReference valueRef = new FieldReference(testCase,
// new GenericField(getDeclaredField(type, fieldName), type));
// final VariableReference targetVar = new VariableReferenceImpl(testCase,
// fieldType);
final FieldStatement fieldStatement = new FieldStatement(testCase, new GenericField(FieldUtils.getField(type, fieldName, true), type), this.oidToVarRefMap.get(oid));
//final AssignmentStatement assignment = new AssignmentStatement(testCase,
// targetVar, valueRef);
// VariableReference varRef = testCase.addStatement(assignment);
VariableReference varRef = testCase.addStatement(fieldStatement);
this.oidToVarRefMap.put(returnValueOID, varRef);
} catch (final Exception e) {
logger.debug("Error while trying to get field "
+ fieldName + " of class "
+ getClassForName(typeName)+": "+e);
CodeGeneratorException.propagateError(e, "[logRecNo = %s] - an unexpected error occurred while creating field read access stmt. Log: %s", logRecNo, log);
}
}
}
private final Class getClassFromType(final org.objectweb.asm.Type type) {
if (type.equals(org.objectweb.asm.Type.BOOLEAN_TYPE)) {
return Boolean.TYPE;
} else if (type.equals(org.objectweb.asm.Type.BYTE_TYPE)) {
return Byte.TYPE;
} else if (type.equals(org.objectweb.asm.Type.CHAR_TYPE)) {
return Character.TYPE;
} else if (type.equals(org.objectweb.asm.Type.DOUBLE_TYPE)) {
return Double.TYPE;
} else if (type.equals(org.objectweb.asm.Type.FLOAT_TYPE)) {
return Float.TYPE;
} else if (type.equals(org.objectweb.asm.Type.INT_TYPE)) {
return Integer.TYPE;
} else if (type.equals(org.objectweb.asm.Type.LONG_TYPE)) {
return Long.TYPE;
} else if (type.equals(org.objectweb.asm.Type.SHORT_TYPE)) {
return Short.TYPE;
} else if (type.getSort() == org.objectweb.asm.Type.ARRAY) {
final org.objectweb.asm.Type elementType = type.getElementType();
int[] dimensions = new int[type.getDimensions()];
if (elementType.equals(org.objectweb.asm.Type.BOOLEAN_TYPE)) {
return Array.newInstance(boolean.class, dimensions).getClass();
} else if (elementType.equals(org.objectweb.asm.Type.BYTE_TYPE)) {
return Array.newInstance(byte.class, dimensions).getClass();
} else if (elementType.equals(org.objectweb.asm.Type.CHAR_TYPE)) {
return Array.newInstance(char.class, dimensions).getClass();
} else if (elementType.equals(org.objectweb.asm.Type.DOUBLE_TYPE)) {
return Array.newInstance(double.class, dimensions).getClass();
} else if (elementType.equals(org.objectweb.asm.Type.FLOAT_TYPE)) {
return Array.newInstance(float.class, dimensions).getClass();
} else if (elementType.equals(org.objectweb.asm.Type.INT_TYPE)) {
return Array.newInstance(int.class, dimensions).getClass();
} else if (elementType.equals(org.objectweb.asm.Type.LONG_TYPE)) {
return Array.newInstance(long.class, dimensions).getClass();
} else if (elementType.equals(org.objectweb.asm.Type.SHORT_TYPE)) {
return Array.newInstance(short.class, dimensions).getClass();
}
}
// try
// {
return getClassForName(type.getClassName());
// return Class.forName(type.getClassName(), true, StaticTestCluster.classLoader);
// }
// catch (final ClassNotFoundException e)
// {
// throw new RuntimeException(e);
// }
}
private final Class getClassForName(String type) {
try {
if (type.equals("boolean") || type.equals("java.lang.Boolean")) {
return Boolean.TYPE;
} else if (type.equals("byte") || type.equals("java.lang.Byte")) {
return Byte.TYPE;
} else if (type.equals("char") || type.equals("java.lang.Character")) {
return Character.TYPE;
} else if (type.equals("double") || type.equals("java.lang.Double")) {
return Double.TYPE;
} else if (type.equals("float") || type.equals("java.lang.Float")) {
return Float.TYPE;
} else if (type.equals("int") || type.equals("java.lang.Integer")) {
return Integer.TYPE;
} else if (type.equals("long") || type.equals("java.lang.Long")) {
return Long.TYPE;
} else if (type.equals("short") || type.equals("java.lang.Short")) {
return Short.TYPE;
} else if (type.equals("String")) {
return Class.forName("java.lang." + type, true,
TestGenerationContext.getInstance().getClassLoaderForSUT());
}
if (type.endsWith("[]")) {
// see http://stackoverflow.com/questions/3442090/java-what-is-this-ljava-lang-object
final StringBuilder arrayTypeNameBuilder = new StringBuilder(30);
int index = 0;
while((index = type.indexOf('[', index)) != -1)
{
arrayTypeNameBuilder.append('[');
index++;
}
arrayTypeNameBuilder.append('L'); // always needed for Object arrays
// remove bracket from type name get array component type
type = type.replace("[]", "");
arrayTypeNameBuilder.append(type);
arrayTypeNameBuilder.append(';'); // finalize object array name
return Class.forName(arrayTypeNameBuilder.toString(), true,
TestGenerationContext.getInstance().getClassLoaderForSUT());
} else {
return Class.forName(ResourceList.getClassNameFromResourcePath(type), true,
TestGenerationContext.getInstance().getClassLoaderForSUT());
}
} catch (final ClassNotFoundException e) {
throw new RuntimeException(e);
}
}
private Field getDeclaredField(final Class clazz, final String fieldName)
throws NoSuchFieldException {
if (clazz == null || Object.class.equals(clazz)) {
throw new NoSuchFieldException(fieldName);
}
try {
final Field field = clazz.getDeclaredField(fieldName);
field.setAccessible(true);
return field;
} catch (final NoSuchFieldException e) {
return getDeclaredField(clazz.getSuperclass(), fieldName);
}
}
private Method getDeclaredMethod(final Class clazz, final String methodName,
Class[] paramTypes) throws NoSuchMethodException {
// logger.info("Trying to get method "+methodName +" from class "+clazz+" with parameters "+Arrays.asList(paramTypes));
if (clazz == null || Object.class.equals(clazz)) {
throw new NoSuchMethodException(methodName + "(" + Arrays.toString(paramTypes)
+ ")");
}
try {
final Method m = clazz.getDeclaredMethod(methodName, paramTypes);
m.setAccessible(true);
return m;
} catch (final NoSuchMethodException e) {
//logger.info("Not found {}, available methods: {}", methodName, Arrays.asList(clazz.getDeclaredMethods()));
return getDeclaredMethod(clazz.getSuperclass(), methodName, paramTypes);
}
}
@Override
public void createArrayInitStmt(final CaptureLog log, final int logRecNo) {
final int oid = log.objectIds.get(logRecNo);
final Object[] params = log.params.get(logRecNo);
final String arrTypeName = log.getTypeName(oid);
final Class arrType = getClassForName(arrTypeName);
// --- create array instance creation e.g. int[] var = new int[10];
final ArrayReference arrRef;
// create array only once
if (this.oidToVarRefMap.containsKey(oid)) {
arrRef = (ArrayReference) this.oidToVarRefMap.get(oid);
} else {
arrRef = new ArrayReference(testCase, arrType);
final ArrayStatement arrStmt = new ArrayStatement(testCase, arrRef);
arrStmt.setSize(params.length);
testCase.addStatement(arrStmt);
this.oidToVarRefMap.put(oid, arrRef);
}
final Class arrCompClass = arrType.getComponentType();
AssignmentStatement assignStmt;
ArrayIndex arrIndex;
VariableReference valueRef;
Integer argOID; // is either an oid or null
for (int i = 0; i < params.length; i++) {
argOID = (Integer) params[i];
if (argOID == null) {
valueRef = testCase.addStatement(new NullStatement(testCase, arrCompClass));
} else {
valueRef = this.oidToVarRefMap.get(argOID);
if(valueRef == null) {
logger.info("ValueREF is NULL for "+argOID);
continue;
}
}
arrIndex = new ArrayIndex(testCase, arrRef, i);
assignStmt = new AssignmentStatement(testCase, arrIndex, valueRef);
testCase.addStatement(assignStmt);
logger.debug("Adding assignment (array): "+assignStmt.getCode());
}
}
private boolean hasDefaultConstructor(final Class clazz) {
for (final Constructor c : clazz.getConstructors()) {
if (c.getParameterTypes().length == 0 && Modifier.isPublic(c.getModifiers())) {
return true;
}
}
return false;
}
@Override
public void createCollectionInitStmt(final CaptureLog log, final int logRecNo) {
try
{
final int oid = log.objectIds.get(logRecNo);
final Object[] params = log.params.get(logRecNo);
String collTypeName = log.getTypeName(oid);
Class collType = getClassForName(collTypeName);
// -- determine if an alternative collection must be used for code generation
final boolean isPublic = java.lang.reflect.Modifier.isPublic(collType.getModifiers());
if (! isPublic || !hasDefaultConstructor(collType)) {
if (Set.class.isAssignableFrom(collType)) {
collTypeName = HashSet.class.getName();
collType = HashSet.class;
} else if (List.class.isAssignableFrom(collType)) {
collTypeName = ArrayList.class.getName();
collType = ArrayList.class;
} else if (Queue.class.isAssignableFrom(collType)) {
collTypeName = ArrayDeque.class.getName();
collType = ArrayDeque.class;
} else {
CodeGeneratorException.propagateError("[logRecNo = %s] - collection %s is not supported", logRecNo, collType);
}
}
// -- create code for instantiating collection
final List noParams = Collections.emptyList();
final ConstructorStatement constrStmt = new ConstructorStatement(testCase,
new GenericConstructor(collType.getConstructor(new Class[0]),
collType), noParams);
final VariableReference collRef = testCase.addStatement(constrStmt);
this.oidToVarRefMap.put(oid, collRef);
// --- fill collection
MethodStatement methodStmt;
Integer argOID; // is either an oid or null
ArrayList paramList;
Method method;
for (int i = 0; i < params.length; i++)
{
paramList = new ArrayList(1);
argOID = (Integer) params[i];
if (argOID == null || !this.oidToVarRefMap.containsKey(argOID)) {
VariableReference var = testCase.addStatement(new NullStatement(testCase,
Object.class));
paramList.add(var);
} else {
VariableReference var = this.oidToVarRefMap.get(argOID);
paramList.add(var);
}
method = collType.getMethod("add", Object.class);
methodStmt = new MethodStatement(testCase, new GenericMethod(method,
collType), collRef, paramList);
testCase.addStatement(methodStmt);
}
}
catch (final Exception e) {
CodeGeneratorException.propagateError("[logRecNo = %s] - an unexpected error occurred while creating collection init stmt", logRecNo, e);
}
}
private void replaceNullWithNullReferences(List paramList, Class ... paramTypes)
{
CodeGeneratorException.check(paramList.size() == paramTypes.length, "[paramList = %s, paramTypes] - number of params does not correspond number of paramTypes", paramList, Arrays.toString(paramTypes));
Object v;
for(int j = 0; j < paramList.size(); j++)
{
v = paramList.get(j);
if(v == null)
{
paramList.set(j, new NullReference(testCase, paramTypes[j]));
}
}
}
@Override
public void createMapInitStmt(final CaptureLog log, final int logRecNo) {
try {
final int oid = log.objectIds.get(logRecNo);
final Object[] params = log.params.get(logRecNo);
String collTypeName = log.getTypeName(oid);
Class collType = getClassForName(collTypeName);
// -- determine if an alternative collection must be used for code generation
final boolean isPublic= java.lang.reflect.Modifier.isPublic(collType.getModifiers());
if (!isPublic|| !hasDefaultConstructor(collType)) {
collType = HashMap.class;
}
// -- create code for instantiating collection
final List noParams = Collections.emptyList();
final ConstructorStatement constrStmt = new ConstructorStatement(testCase,
new GenericConstructor(collType.getConstructor(new Class[0]),
collType), noParams);
final VariableReference collRef = testCase.addStatement(constrStmt);
this.oidToVarRefMap.put(oid, collRef);
// --- fill collection
MethodStatement methodStmt;
Integer argOID; // is either an oid or null
ArrayList paramList = new ArrayList();
for (int i = 0; i < params.length; i++) {
argOID = (Integer) params[i];
if (argOID == null) {
paramList.add(testCase.addStatement(new NullStatement(testCase,
Object.class)));
} else {
paramList.add(this.oidToVarRefMap.get(argOID));
}
if (i % 2 == 1) {
final Method method = collType.getMethod("put", Object.class,
Object.class);
replaceNullWithNullReferences(paramList, Object.class, Object.class);
methodStmt = new MethodStatement(testCase, new GenericMethod(method,
collType), collRef, paramList);
testCase.addStatement(methodStmt);
paramList = new ArrayList(2);
}
}
} catch (final Exception e) {
CodeGeneratorException.propagateError( e, "[logRecNo = %s] - an unexpected error occurred while creating map init stmt", logRecNo);
}
}
@Override
public void before(CaptureLog log) {
this.testCase = new CarvedTestCase();
}
@Override
public void after(CaptureLog log) {
}
@Override
public TestCase getCode() {
return this.testCase;
}
@Override
public void clear() {
this.testCase = null;
this.oidToVarRefMap.clear();
}
}
