groovy.mock.interceptor
Class StubFor

java.lang.Object
  groovy.mock.interceptor.StubFor

public class StubFor
extends Object

StubFor supports (typically unit) testing of classes in isolation by allowing a loosely-ordered expectation of the behavior of collaborators to be defined. A typical test scenario involves a class under test (CUT) and one or more collaborators. In such a scenario it is often desirable to just test the business logic of the CUT. One strategy for doing that is to replace the collaborator instances with simplified stub objects to help isolate out the logic in the CUT. StubFor allows such stubs to be created using meta-programming. The desired behavior of collaborators is defined as a behavior specification. The behavior can be checked by the user using verify(). With StubFor, a stub's expectation is sequence independent and use of verify() is left to the user. Typical usage is as follows:

 import groovy.mock.interceptor.StubFor

 class Person {
   String first, last
 }

 class Family {
   Person mother, father
   def nameOfFather() { "$father.first $father.last" }
 }

 def stub = new StubFor(Person)
 stub.demand.with {
   getLast{ 'name' }
   getFirst{ 'dummy' }
 }
 stub.use {
   def john = new Person(first:'John', last:'Smith')
   def f = new Family(father:john)
   assert f.nameOfFather() == 'dummy name'
 }
 stub.expect.verify()
 

author:

Dierk Koenig

author:

Paul King

StubFor

public StubFor(Class clazz, boolean interceptConstruction = false)

ignore

public def ignore(Object filter, Closure filterBehavior = null)

Allows particular method calls to be ignored and not treated as part of the required behavior specification. If you don't specify a return closure the method call will fall through to the underlying instance, i.e. half-mock style. The filter object is invoked using the normal Groovy isCase() semantics.

See:

MockFor#ignore(Object, Closure)

makeProxyInstance

public GroovyObject makeProxyInstance(def args, boolean isDelegate)

proxyDelegateInstance

public GroovyObject proxyDelegateInstance(def args = null)

Allows a more traditional instance-style stubbing paradigm. This is the recommended method to call to use the instance-style with Java classes.

See:

MockFor#proxyDelegateInstance(Object)

proxyInstance

public GroovyObject proxyInstance(def args = null)

Allows a more traditional instance-style stubbing paradigm. This is the recommended method to call to use the instance-style with Groovy classes.

See:

MockFor#proxyInstance(Object)

use

public void use(Closure closure)

See:

MockFor#use(Closure)

use

public void use(GroovyObject obj, Closure closure)

verify

public void verify(GroovyObject obj)

For manual verification

verify

public void verify()

Convenience method

Copyright © 2003-2010 The Codehaus. All rights reserved.