org.evosuite.instrumentation.mutation

Class ReplaceVariable

java.lang.Object

org.evosuite.instrumentation.mutation.ReplaceVariable

All Implemented Interfaces:

MutationOperator

public class ReplaceVariable
extends Object
implements MutationOperator

ReplaceVariable class.

Author:

Gordon Fraser

Field Summary

Fields

Modifier and Type	Field and Description
static String	NAME

Constructor Summary

Constructors

Constructor and Description
ReplaceVariable()

Method Summary

Modifier and Type	Method and Description
static void	addPrimitiveDistanceCheck(org.objectweb.asm.tree.InsnList distance, org.objectweb.asm.Type type, org.objectweb.asm.tree.InsnList mutant) addPrimitiveDistanceCheck
static void	addReferenceDistanceCheck(org.objectweb.asm.tree.InsnList distance, org.objectweb.asm.Type type, org.objectweb.asm.tree.InsnList mutant) addReferenceDistanceCheck
List<Mutation>	apply(org.objectweb.asm.tree.MethodNode mn, String className, String methodName, BytecodeInstruction instruction, org.objectweb.asm.tree.analysis.Frame frame) Insert the mutation into the bytecode
static boolean	canUse(Field f) This replicates TestUsageChecker.canUse but we need to avoid that we try to access Properties.getTargetClassAndDontInitialise
static org.objectweb.asm.tree.InsnList	cast(org.objectweb.asm.Type from, org.objectweb.asm.Type to) Generates the instructions to cast a numerical value from one type to another.
static org.objectweb.asm.tree.InsnList	copy(org.objectweb.asm.tree.InsnList orig) copy
static double	getDistance(double val1, double val2) getDistance
static double	getDistance(Object obj1, Object obj2) getDistance
org.objectweb.asm.tree.InsnList	getInfectionDistance(org.objectweb.asm.Type type, org.objectweb.asm.tree.AbstractInsnNode original, org.objectweb.asm.tree.InsnList mutant) getInfectionDistance
boolean	isApplicable(BytecodeInstruction instruction) Check if the mutation operator is applicable to the instruction

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

NAME

public static final String NAME

See Also:

Constant Field Values

Constructor Detail

ReplaceVariable

public ReplaceVariable()

Method Detail

apply

public List<Mutation> apply(org.objectweb.asm.tree.MethodNode mn,
                            String className,
                            String methodName,
                            BytecodeInstruction instruction,
                            org.objectweb.asm.tree.analysis.Frame frame)

Insert the mutation into the bytecode

Specified by:

apply in interface MutationOperator

Parameters:

mn - a MethodNode object.

className - a String object.

methodName - a String object.

instruction - a BytecodeInstruction object.

frame - a Frame object.

Returns:

a List object.

copy

public static org.objectweb.asm.tree.InsnList copy(org.objectweb.asm.tree.InsnList orig)

copy

Parameters:

orig - a InsnList object.

Returns:

a InsnList object.

addPrimitiveDistanceCheck

public static void addPrimitiveDistanceCheck(org.objectweb.asm.tree.InsnList distance,
                                             org.objectweb.asm.Type type,
                                             org.objectweb.asm.tree.InsnList mutant)

addPrimitiveDistanceCheck

Parameters:

distance - a InsnList object.

type - a Type object.

mutant - a InsnList object.

addReferenceDistanceCheck

public static void addReferenceDistanceCheck(org.objectweb.asm.tree.InsnList distance,
                                             org.objectweb.asm.Type type,
                                             org.objectweb.asm.tree.InsnList mutant)

addReferenceDistanceCheck

Parameters:

distance - a InsnList object.

type - a Type object.

mutant - a InsnList object.

getInfectionDistance

public org.objectweb.asm.tree.InsnList getInfectionDistance(org.objectweb.asm.Type type,
                                                            org.objectweb.asm.tree.AbstractInsnNode original,
                                                            org.objectweb.asm.tree.InsnList mutant)

getInfectionDistance

Parameters:

type - a Type object.

original - a AbstractInsnNode object.

mutant - a InsnList object.

Returns:

a InsnList object.

getDistance

public static double getDistance(double val1,
                                 double val2)

getDistance

Parameters:

val1 - a double.

val2 - a double.

Returns:

a double.

getDistance

public static double getDistance(Object obj1,
                                 Object obj2)

getDistance

Parameters:

obj1 - a Object object.

obj2 - a Object object.

Returns:

a double.

cast

public static org.objectweb.asm.tree.InsnList cast(org.objectweb.asm.Type from,
                                                   org.objectweb.asm.Type to)

Generates the instructions to cast a numerical value from one type to another.

Parameters:

from - the type of the top stack value

to - the type into which this value must be cast.

Returns:

a InsnList object.

canUse

public static boolean canUse(Field f)

This replicates TestUsageChecker.canUse but we need to avoid that we try to access Properties.getTargetClassAndDontInitialise

Parameters:

f -

Returns:

isApplicable

public boolean isApplicable(BytecodeInstruction instruction)

Check if the mutation operator is applicable to the instruction

Specified by:

isApplicable in interface MutationOperator

Parameters:

instruction - a BytecodeInstruction object.

Returns:

a boolean.