public void calls_listener_start_section()
        {
            var context = new TestContext(x => x.AddFixture<MathFixture>());
            var listener = MockRepository.GenerateMock<ITestObserver>();
            context.Listener = listener;

            listener.Expect(x => x.CanContinue(null)).Return(true).IgnoreArguments().Repeat.Any();

            var section = new Section("Math");
            context.CallOn<ITestVisitor>(x => x.StartSection(section));

            listener.AssertWasCalled(x => x.StartSection(section));
        }