org.jmock.internal

Class ReturnDefaultValueAction

java.lang.Object

org.jmock.internal.ReturnDefaultValueAction

All Implemented Interfaces:

org.hamcrest.SelfDescribing, Action, Invokable

public class ReturnDefaultValueAction
extends Object
implements Action

Returns a default value for the invoked method's result type.

• Returns nothing from void methods.
• Returns zero or false results for primitive types.
• Returns zero length instances for arrays and strings.
• Returns empty instances for collections and maps types in java.util.
• Returns imposterised Null Objects for types that can be imposterised by the action's Imposteriser.
• Otherwise returns null.

The default value can be overridden for specific types.

Author:

Nat Pryce, Steve Freeman 2013

Constructor Summary

Constructors

Constructor and Description
ReturnDefaultValueAction()
ReturnDefaultValueAction(Imposteriser imposteriser)
ReturnDefaultValueAction(Imposteriser imposteriser, Map<Class<?>,Object> typeToResultValue)

Method Summary

Modifier and Type	Method and Description
void	addResult(Class<?> resultType, Object resultValue)
protected static Map<Class<?>,Object>	createDefaultResults()
void	describeTo(org.hamcrest.Description description)
Object	invoke(Invocation invocation) Performs an action in response to an invocation.
void	setImposteriser(Imposteriser newImposteriser)

Methods inherited from class java.lang.Object

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

Constructor Detail

ReturnDefaultValueAction

public ReturnDefaultValueAction(Imposteriser imposteriser,
                                Map<Class<?>,Object> typeToResultValue)

ReturnDefaultValueAction

public ReturnDefaultValueAction(Imposteriser imposteriser)

ReturnDefaultValueAction

public ReturnDefaultValueAction()

Method Detail

setImposteriser

public void setImposteriser(Imposteriser newImposteriser)

describeTo

public void describeTo(org.hamcrest.Description description)

Specified by:

describeTo in interface org.hamcrest.SelfDescribing

addResult

public void addResult(Class<?> resultType,
                      Object resultValue)

invoke

public Object invoke(Invocation invocation)
              throws Throwable

Description copied from interface: Invokable

Performs an action in response to an invocation.

Specified by:

invoke in interface Invokable

Parameters:

invocation - The invocation to perform.

Returns:

The result of the invocation, if not throwing an exception. Must return null if the invoked method has a void return type.

Throws:

Throwable - An exception to be thrown to the caller, if not returning a value. Any checked exception thrown must be in the throws list of the invoked method.

createDefaultResults

protected static Map<Class<?>,Object> createDefaultResults()