public void CanAssertInvocations()
{
var target = new FakeCalls();
target.AddBehavior(new DefaultValueBehavior());
target.TurnOn();
Assert.Single(target.AsMock().InvocationsFor(c => c.TurnOn()));
Assert.Equal(0, target.Add(2, 3));
Assert.Single(target.AsMock().InvocationsFor(c => c.Add(2, 3)));
}