org.powermock.core

Class ClassReplicaCreator

java.lang.Object

org.powermock.core.ClassReplicaCreator

public class ClassReplicaCreator
extends java.lang.Object

This class takes care of creating a replica of a class. The class structure is copied to the new class. This is useful in situations where you want to create a mock for a class but it's not possible because of some restrictions (such as the class being loaded by the bootstrap class-loader).

Field Summary

Fields

Modifier and Type	Field and Description
private static java.util.concurrent.atomic.AtomicInteger	counter
private static java.lang.String	POWERMOCK_INSTANCE_DELEGATOR_FIELD_NAME

Constructor Summary

Constructors

Constructor and Description
ClassReplicaCreator()

Method Summary

Modifier and Type	Method and Description
private <T> void	addDelegatorField(T delegator, javassist.CtClass replicaClass) Add a field to the replica class that holds the instance delegator.
private void	copyFields(javassist.CtClass originalClassAsCtClass, javassist.CtClass newClass)
java.lang.Class<?>	createClassReplica(java.lang.Class<?> clazz)
<T> java.lang.Class<T>	createInstanceReplica(T delegator) Create a class that is a replica of type T.
private <T> java.lang.String	generateReplicaClassName(java.lang.Class<T> clazz)
private static java.lang.String	getParametersAsString(java.lang.String[] types)
private java.lang.String[]	getParameterTypes(javassist.CtMethod ctMethod)
private java.lang.String	getReplicaMethodDelegationCode(java.lang.Class<?> clazz, javassist.CtMethod ctMethod, java.lang.String classOrInstanceToDelegateTo)

Methods inherited from class java.lang.Object

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

Field Detail

POWERMOCK_INSTANCE_DELEGATOR_FIELD_NAME

private static final java.lang.String POWERMOCK_INSTANCE_DELEGATOR_FIELD_NAME

See Also:

Constant Field Values

counter

private static java.util.concurrent.atomic.AtomicInteger counter

Constructor Detail

ClassReplicaCreator

public ClassReplicaCreator()

Method Detail

createClassReplica

public java.lang.Class<?> createClassReplica(java.lang.Class<?> clazz)

createInstanceReplica

public <T> java.lang.Class<T> createInstanceReplica(T delegator)

Create a class that is a replica of type T. To allow for partial mocking all calls to non-mocked methods will be delegated to the delegator.

Type Parameters:

T - The type of the replica class to be created.

Parameters:

delegator - The delegator object that will be invoked to allow for partial mocking.

Returns:

A replica class that can be used to duck-type an instance.

addDelegatorField

private <T> void addDelegatorField(T delegator,
                                   javassist.CtClass replicaClass)
                            throws javassist.CannotCompileException

Add a field to the replica class that holds the instance delegator. I.e. if we're creating a instance replica of java.lang.Long this methods adds a new field of type delegator.getClass() to the replica class.

Throws:

javassist.CannotCompileException

generateReplicaClassName

private <T> java.lang.String generateReplicaClassName(java.lang.Class<T> clazz)

copyFields

private void copyFields(javassist.CtClass originalClassAsCtClass,
                        javassist.CtClass newClass)
                 throws javassist.CannotCompileException,
                        javassist.NotFoundException

Throws:

javassist.CannotCompileException

javassist.NotFoundException

getReplicaMethodDelegationCode

private java.lang.String getReplicaMethodDelegationCode(java.lang.Class<?> clazz,
                                                        javassist.CtMethod ctMethod,
                                                        java.lang.String classOrInstanceToDelegateTo)
                                                 throws javassist.NotFoundException

Throws:

javassist.NotFoundException

getParameterTypes

private java.lang.String[] getParameterTypes(javassist.CtMethod ctMethod)
                                      throws javassist.NotFoundException

Throws:

javassist.NotFoundException

getParametersAsString

private static java.lang.String getParametersAsString(java.lang.String[] types)