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/**
* Copyright (C) 2010-2016 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.runtime;
import org.evosuite.runtime.annotation.Constraints;
import org.evosuite.runtime.javaee.injection.InjectionList;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.lang.annotation.Annotation;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
/**
* Class used to access private fields/methods by reflection.
* If the accessed fields/methods do not exist any more, than
* the tests would gracefully stop
*
* Created by Andrea on 20/02/15.
*/
public class PrivateAccess {
private static final Logger logger = LoggerFactory.getLogger(PrivateAccess.class);
/**
* flag to specify to throw AssumptionViolatedException when fields/methods do not
* exist any more. this should bet set to false iff during experiments
*/
private static boolean shouldNotFailTest = true;
public static void setShouldNotFailTest(boolean b){
shouldNotFailTest = b;
}
/**
* Use reflection to set the given field
*
* @param klass
* @param instance null if field is static
* @param fieldName
* @param value
* @param the class type
* @throws IllegalArgumentException if klass or fieldName are null
* @throws FalsePositiveException if the the field does not exist anymore (eg due to refactoring)
*/
public static void setVariable(Class klass, T instance, String fieldName, Object value)
throws IllegalArgumentException, FalsePositiveException {
setVariable(klass,instance,fieldName,value,null);
}
/**
* Use reflection to set the given field
*
* @param klass
* @param instance null if field is static
* @param fieldName
* @param value
* @param the class type
* @param tagsToCheck if not null, then the field has to have at least one the tags in such list
* @throws IllegalArgumentException if klass or fieldName are null
* @throws FalsePositiveException if the the field does not exist anymore (eg due to refactoring)
*/
public static void setVariable(Class klass, T instance, String fieldName, Object value,
List> tagsToCheck)
throws IllegalArgumentException, FalsePositiveException {
if(klass == null){
throw new IllegalArgumentException("No specified class");
}
if(fieldName == null){
throw new IllegalArgumentException("No specified field name");
}
if(fieldName.equals("serialVersionUID")){
throw new IllegalArgumentException("It is not allowed to set serialVersionUID by reflection");
}
// note: 'instance' can be null (ie, for static variables), and of course "value"
Field field = null;
try {
field = klass.getDeclaredField(fieldName);
} catch (NoSuchFieldException e) {
String message = "Field '"+fieldName+"' does not exist any more in class "+klass;
if(shouldNotFailTest) {
// force the throwing of a JUnit AssumptionViolatedException
throw new FalsePositiveException(message);
//it is equivalent to calling
//org.junit.Assume.assumeTrue(message,false);
} else {
throw new IllegalArgumentException(message);
}
}
assert field != null;
field.setAccessible(true);
if(tagsToCheck != null){
boolean match = false;
for(Annotation ann : field.getDeclaredAnnotations()){
Class tag = ann.annotationType();
if(InjectionList.isValidForInjection(tag, tagsToCheck)){
match = true;
break;
}
}
if(!match){
throw new IllegalArgumentException("The field "+fieldName+" in class "+klass.getName()+
"does not have any valid annotation");
}
}
try {
Reflection.setField(field, instance, value);
} catch (IllegalAccessException e) {
//should never happen, due to setAccessible(true);
throw new FalsePositiveException("Failed to set field "+fieldName+": "+e.toString());
}
}
/**
* Call the default constructor of the class under test.
* This is useful to avoid low coverage due to private constructors in final
* classes used to prevent instantiating them (eg those classes only have
* static methods)
*
* @throws Throwable
*/
@Constraints(atMostOnce = true, notMutable = true)
public static Object callDefaultConstructorOfTheClassUnderTest() throws Throwable{
Class cut = Thread.currentThread().getContextClassLoader().loadClass(RuntimeSettings.className);
return callDefaultConstructor(cut);
}
/**
* Call the default constructor of the given klass.
* This is useful to avoid low coverage due to private constructors in final
* classes used to prevent instantiating them (eg those classes only have
* static methods)
*
* @param klass
* @param
* @throws Throwable
*/
@Constraints(atMostOnce = true, noNullInputs = true, notMutable = true)
public static T callDefaultConstructor(Class klass) throws Throwable{
//TODO: not only should be atMostOnce in a test, but in the whole suite/archive
if(klass == null){
throw new IllegalArgumentException("No specified class");
}
//RuntimeSettings
Constructor constructor;
try {
constructor = klass.getDeclaredConstructor();
} catch (NoSuchMethodException e) {
String message = "Default constructor does not exist anymore";
if(shouldNotFailTest){
throw new FalsePositiveException(message);
} else {
throw new IllegalArgumentException(message);
}
}
assert constructor != null;
constructor.setAccessible(true);
try {
return constructor.newInstance();
} catch (InstantiationException | IllegalAccessException e) {
throw new FalsePositiveException("Failed to call the default constructor of "+klass.getName()+": "+e.toString());
} catch (InvocationTargetException e) {
//we need to propagate the real cause to the test
throw e.getTargetException();
}
}
/**
* Use reflection to call the given method
*
* @param klass
* @param instance null for static methods
* @param methodName
* @param inputs arrays of inputs
* @param types types for the inputs
* @param
* @return the result of calling the method
* @throws IllegalArgumentException if either klass or methodName are null
* @throws FalsePositiveException if method does not exist any more (eg, refactoring)
* @throws Throwable the method might throw an internal exception
*/
public static Object callMethod(Class klass, T instance, String methodName, Object[] inputs, Class[] types)
throws Throwable {
if(klass == null){
throw new IllegalArgumentException("No specified class");
}
if(methodName == null){
throw new IllegalArgumentException("No specified method name");
}
// note: 'instance' can be null (ie, for static methods), and of course "inputs"
if( (types==null && inputs!=null) || (types!=null && inputs==null) ||(types!=null && inputs!=null && types.length!=inputs.length)){
throw new IllegalArgumentException("Mismatch between input parameters and their type description");
}
Method method = null;
try {
method = klass.getDeclaredMethod(methodName,types);
} catch (NoSuchMethodException e) {
String message = "Method "+methodName+" does not exist anymore";
if(shouldNotFailTest){
throw new FalsePositiveException(message);
} else {
throw new IllegalArgumentException(message);
}
}
assert method != null;
method.setAccessible(true);
Object result = null;
try {
result = method.invoke(instance,inputs);
} catch (IllegalAccessException e) {
//shouldn't really happen
throw new FalsePositiveException("Failed to call "+methodName+": "+e.toString());
} catch (InvocationTargetException e) {
//we need to propagate the real cause to the test
throw e.getTargetException();
}
return result;
}
/*
TODO likely need one method per number of inputs
*/
public static Object callMethod(Class klass, T instance, String methodName)
throws Throwable {
return callMethod(klass,instance,methodName,new Object[0], new Class[0]);
}
public static Object callMethod(Class klass, T instance, String methodName, Object input, Class type)
throws Throwable {
return callMethod(klass,instance,methodName,new Object[]{input}, new Class[]{type});
}
public static Object callMethod(Class klass, T instance, String methodName
, Object i0, Class t0, Object i1, Class t1)
throws Throwable {
return callMethod(klass,instance,methodName,new Object[]{i0,i1}, new Class[]{t0,t1});
}
public static Object callMethod(Class klass, T instance, String methodName
, Object i0, Class t0, Object i1, Class t1, Object i2, Class t2)
throws Throwable {
return callMethod(klass,instance,methodName,new Object[]{i0,i1,i2}, new Class[]{t0,t1,t2});
}
public static Object callMethod(Class klass, T instance, String methodName
, Object i0, Class t0, Object i1, Class t1, Object i2, Class t2,Object i3, Class t3)
throws Throwable {
return callMethod(klass,instance,methodName,new Object[]{i0,i1,i2,i3}, new Class[]{t0,t1,t2,t3});
}
public static Object callMethod(Class klass, T instance, String methodName
, Object i0, Class t0, Object i1, Class t1, Object i2, Class t2,Object i3, Class t3,Object i4, Class t4)
throws Throwable {
return callMethod(klass,instance,methodName,new Object[]{i0,i1,i2,i3,i4}, new Class[]{t0,t1,t2,t3,t4});
}
public static Object callMethod(Class klass, T instance, String methodName
, Object i0, Class t0, Object i1, Class t1, Object i2, Class t2,Object i3, Class t3,Object i4, Class t4
,Object i5, Class t5)
throws Throwable {
return callMethod(klass,instance,methodName,new Object[]{i0,i1,i2,i3,i4,i5}, new Class[]{t0,t1,t2,t3,t4,t5});
}
public static Object callMethod(Class klass, T instance, String methodName
, Object i0, Class t0, Object i1, Class t1, Object i2, Class t2,Object i3, Class t3,Object i4, Class t4
,Object i5, Class t5,Object i6, Class t6)
throws Throwable {
return callMethod(klass,instance,methodName,new Object[]{i0,i1,i2,i3,i4,i5,i6}, new Class[]{t0,t1,t2,t3,t4,t5,t6});
}
public static Object callMethod(Class klass, T instance, String methodName
, Object i0, Class t0, Object i1, Class t1, Object i2, Class t2,Object i3, Class t3,Object i4, Class t4
,Object i5, Class t5,Object i6, Class t6,Object i7, Class t7)
throws Throwable {
return callMethod(klass,instance,methodName,new Object[]{i0,i1,i2,i3,i4,i5,i6,i7}, new Class[]{t0,t1,t2,t3,t4,t5,t6,t7});
}
public static Object callMethod(Class klass, T instance, String methodName
, Object i0, Class t0, Object i1, Class t1, Object i2, Class t2,Object i3, Class t3,Object i4, Class t4
,Object i5, Class t5,Object i6, Class t6,Object i7, Class t7,Object i8, Class t8)
throws Throwable {
return callMethod(klass,instance,methodName,new Object[]{i0,i1,i2,i3,i4,i5,i6,i7,i8}, new Class[]{t0,t1,t2,t3,t4,t5,t6,t7,t8});
}
public static Object callMethod(Class klass, T instance, String methodName
, Object i0, Class t0, Object i1, Class t1, Object i2, Class t2,Object i3, Class t3,Object i4, Class t4
,Object i5, Class t5,Object i6, Class t6,Object i7, Class t7,Object i8, Class t8,Object i9, Class t9)
throws Throwable {
return callMethod(klass,instance,methodName,new Object[]{i0,i1,i2,i3,i4,i5,i6,i7,i8,i9},
new Class[]{t0,t1,t2,t3,t4,t5,t6,t7,t8,t9});
}
public static Object callMethod(Class klass, T instance, String methodName
, Object i0, Class t0, Object i1, Class t1, Object i2, Class t2, Object i3, Class t3, Object i4, Class t4
, Object i5, Class t5, Object i6, Class t6, Object i7, Class t7, Object i8, Class t8, Object i9, Class t9
, Object i10, Class t10)
throws Throwable {
return callMethod(klass,instance,methodName,new Object[]{i0,i1,i2,i3,i4,i5,i6,i7,i8,i9,i10},
new Class[]{t0,t1,t2,t3,t4,t5,t6,t7,t8,t9,t10});
}
public static Object callMethod(Class klass, T instance, String methodName
, Object i0, Class t0, Object i1, Class t1, Object i2, Class t2, Object i3, Class t3, Object i4, Class t4
, Object i5, Class t5, Object i6, Class t6, Object i7, Class t7, Object i8, Class t8, Object i9, Class t9
, Object i10, Class t10,Object i11, Class t11)
throws Throwable {
return callMethod(klass,instance,methodName,new Object[]{i0,i1,i2,i3,i4,i5,i6,i7,i8,i9,i10,i11},
new Class[]{t0,t1,t2,t3,t4,t5,t6,t7,t8,t9,t10,t11});
}
public static Object callMethod(Class klass, T instance, String methodName
, Object i0, Class t0, Object i1, Class t1, Object i2, Class t2, Object i3, Class t3, Object i4, Class t4
, Object i5, Class t5, Object i6, Class t6, Object i7, Class t7, Object i8, Class t8, Object i9, Class t9
, Object i10, Class t10,Object i11, Class t11,Object i12, Class t12)
throws Throwable {
return callMethod(klass,instance,methodName,new Object[]{i0,i1,i2,i3,i4,i5,i6,i7,i8,i9,i10,i11,i12},
new Class[]{t0,t1,t2,t3,t4,t5,t6,t7,t8,t9,t10,t11,t12});
}
public static Object callMethod(Class klass, T instance, String methodName
, Object i0, Class t0, Object i1, Class t1, Object i2, Class t2, Object i3, Class t3, Object i4, Class t4
, Object i5, Class t5, Object i6, Class t6, Object i7, Class t7, Object i8, Class t8, Object i9, Class t9
, Object i10, Class t10,Object i11, Class t11,Object i12, Class t12,Object i13, Class t13)
throws Throwable {
return callMethod(klass,instance,methodName,new Object[]{i0,i1,i2,i3,i4,i5,i6,i7,i8,i9,i10,i11,i12,i13},
new Class[]{t0,t1,t2,t3,t4,t5,t6,t7,t8,t9,t10,t11,t12,t13});
}
public static Object callMethod(Class klass, T instance, String methodName
, Object i0, Class t0, Object i1, Class t1, Object i2, Class t2, Object i3, Class t3, Object i4, Class t4
, Object i5, Class t5, Object i6, Class t6, Object i7, Class t7, Object i8, Class t8, Object i9, Class t9
, Object i10, Class t10,Object i11, Class t11,Object i12, Class t12,Object i13, Class t13,Object i14, Class t14
)
throws Throwable {
return callMethod(klass,instance,methodName,new Object[]{i0,i1,i2,i3,i4,i5,i6,i7,i8,i9,i10,i11,i12,i13,i14},
new Class[]{t0,t1,t2,t3,t4,t5,t6,t7,t8,t9,t10,t11,t12,t13,t14});
}
public static Object callMethod(Class klass, T instance, String methodName
, Object i0, Class t0, Object i1, Class t1, Object i2, Class t2, Object i3, Class t3, Object i4, Class t4
, Object i5, Class t5, Object i6, Class t6, Object i7, Class t7, Object i8, Class t8, Object i9, Class t9
, Object i10, Class t10,Object i11, Class t11,Object i12, Class t12,Object i13, Class t13,Object i14, Class t14
, Object i15, Class t15)
throws Throwable {
return callMethod(klass,instance,methodName,new Object[]{i0,i1,i2,i3,i4,i5,i6,i7,i8,i9,i10,i11,i12,i13,i14,i15},
new Class[]{t0,t1,t2,t3,t4,t5,t6,t7,t8,t9,t10,t11,t12,t13,t14,t15});
}
public static Object callMethod(Class klass, T instance, String methodName
, Object i0, Class t0, Object i1, Class t1, Object i2, Class t2, Object i3, Class t3, Object i4, Class t4
, Object i5, Class t5, Object i6, Class t6, Object i7, Class t7, Object i8, Class t8, Object i9, Class t9
, Object i10, Class t10,Object i11, Class t11,Object i12, Class t12,Object i13, Class t13,Object i14, Class t14
, Object i15, Class t15,Object i16, Class t16)
throws Throwable {
return callMethod(klass,instance,methodName,new Object[]{i0,i1,i2,i3,i4,i5,i6,i7,i8,i9,i10,i11,i12,i13,i14,i15,i16},
new Class[]{t0,t1,t2,t3,t4,t5,t6,t7,t8,t9,t10,t11,t12,t13,t14,t15,t16});
}
public static Object callMethod(Class klass, T instance, String methodName
, Object i0, Class t0, Object i1, Class t1, Object i2, Class t2, Object i3, Class t3, Object i4, Class t4
, Object i5, Class t5, Object i6, Class t6, Object i7, Class t7, Object i8, Class t8, Object i9, Class t9
, Object i10, Class t10,Object i11, Class t11,Object i12, Class t12,Object i13, Class t13,Object i14, Class t14
, Object i15, Class t15,Object i16, Class t16,Object i17, Class t17)
throws Throwable {
return callMethod(klass,instance,methodName,new Object[]{i0,i1,i2,i3,i4,i5,i6,i7,i8,i9,i10,i11,i12,i13,i14,i15,i16,i17},
new Class[]{t0,t1,t2,t3,t4,t5,t6,t7,t8,t9,t10,t11,t12,t13,t14,t15,t16,t17});
}
public static Object callMethod(Class klass, T instance, String methodName
, Object i0, Class t0, Object i1, Class t1, Object i2, Class t2, Object i3, Class t3, Object i4, Class t4
, Object i5, Class t5, Object i6, Class t6, Object i7, Class t7, Object i8, Class t8, Object i9, Class t9
, Object i10, Class t10,Object i11, Class t11,Object i12, Class t12,Object i13, Class t13,Object i14, Class t14
, Object i15, Class t15,Object i16, Class t16,Object i17, Class t17,Object i18, Class t18)
throws Throwable {
return callMethod(klass,instance,methodName,new Object[]{i0,i1,i2,i3,i4,i5,i6,i7,i8,i9,i10,i11,i12,i13,i14,i15,i16,i17,i18},
new Class[]{t0,t1,t2,t3,t4,t5,t6,t7,t8,t9,t10,t11,t12,t13,t14,t15,t16,t17,t18});
}
public static Object callMethod(Class klass, T instance, String methodName
, Object i0, Class t0, Object i1, Class t1, Object i2, Class t2, Object i3, Class t3, Object i4, Class t4
, Object i5, Class t5, Object i6, Class t6, Object i7, Class t7, Object i8, Class t8, Object i9, Class t9
, Object i10, Class t10,Object i11, Class t11,Object i12, Class t12,Object i13, Class t13,Object i14, Class t14
, Object i15, Class t15,Object i16, Class t16,Object i17, Class t17,Object i18, Class t18,Object i19, Class t19)
throws Throwable {
return callMethod(klass,instance,methodName,new Object[]{i0,i1,i2,i3,i4,i5,i6,i7,i8,i9,i10,i11,i12,i13,i14,i15,i16,i17,i18,i19},
new Class[]{t0,t1,t2,t3,t4,t5,t6,t7,t8,t9,t10,t11,t12,t13,t14,t15,t16,t17,t18,t19});
}
public static Method getCallMethod(int nParameters){
int max = 20; //TODO might consider have more
if(nParameters<0 || nParameters>max){
logger.error("Cannot handle reflection on methods with more than {} parameters: asked for {}", max, nParameters);
return null;
}
List> types = new ArrayList<>();
types.add(Class.class);//klass
types.add(Object.class);//T
types.add(String.class);//methodName
for(int i=0; i
