junit - Mocking the bean and defining its behavior at context level -

i have few mocked beans in configuration dependencies of many other beans. want define behavior return null on of method invocations irrespective of input. using easymock

testclass { @autowired  actualclass ac;  public test() { ac.dosometing(); } }   actualclass {  @autowired mockedclass mockedobject;  public dosomething() {  mockedobejct.somemethod(); //i want returned null in  scenario test cases }  } } 

basically:

mockedclass mock = createnicemock(mockedclass.class); replay(mock); ac.setmockedclass(mock); 

the modern version, using junit rule , annotations,

public class mytest {     @rule     public easymockrule rule = new easymockrule(this);      @mock(type=mocktype.nice)     mockedclass mockedobject;      @testsubject     actualclass ac = new actualclass();      @test     public void test() {         ac.dosomething();     } }  class actualclass {      private mockedclass mockedobject;      public void dosomething()  {         mockedobject.somemethod();     }  }  class mockedclass {     public void somemethod() {} }