2. Mock service

Example

        //Arrange
        IManual manual = new Mock<IManual>().Object; //<--- Mock ---
        Order order = new Order { NumberOfPeople = 100, NumberOfPeopleNotInterest = 50 };
        var target = new PrivateAccessor(new JuiceBuilder(manual));

        //Act
        var original = target.CallMethod("GetNumberOfPeople", order);

        //Assert
        Assert.AreEqual(original, 50);