Carlos Blé & Associates

Mock frameworks for Java

23 Nov by Carlos Ble 2

After using EasyMock for several months I found Mockito. Yeah, the name sounds terrible in Spanish: little snot. It will be hard for me to tell spanish developers mockito features avoiding laughs. Guys, be careful with names next time 🙂

Mockito API is so cool that you no longer have to care if you're using a mock or a stub. You just use test doubles the way you need them and nothing more. Record/Replay metaphor is no longer used. The framework knows when are you writing the arrange, the act and the assert steps.

See how easy it is to mock out a void method (EmailAddress is a JPA Model):

 
@Test
public void persistorSaves() throws Exception {
	EmailAddress emailMock = 
		mock(EmailAddress.class);
	Persistor<EmailAddress> persistor = 
                new Persistor<EmailAddress>();
 
	persistor.Save(emailMock);
 
	verify(emailMock).save();
}
 

Check out some examples: http://schuchert.wikispaces.com/Mockito.LoginServiceExample

My favorite mock frameworks so far are Mockito for Java and Rhino.Mocks for C#. They share pretty much all these nice features.