import org.jmock.Expectations; import org.jmock.Mockery; import org.junit.Test; public class ExampleTest { @Test public void testExample() { Mockery mockery = new Mockery(); final SomeDependency mockDependency = mockery.mock(SomeDependency.class); mockery.checking(new Expectations() {{ oneOf(mockDependency).doSomething(with(any(String.class))); will(returnValue(true)); }}); SomeClassToTest testObject = new SomeClassToTest(mockDependency); testObject.doSomethingWithDependency("test"); mockery.assertIsSatisfied(); } }