Trying MSpec

using System;
using Machine.Specifications;
using Given = Machine.Specifications.Establish;
using When = Machine.Specifications.Because;
using Then = Machine.Specifications.It;

namespace TryMSpec {
  public class TicketCalculator{
    private decimal _ticket_price = 11m;
    public void StartPurchase(int runtime, DayOfWeek day, bool isParquet, bool is3D) {}

    public void AddTicket(int age, bool isStudent){
      if (isStudent)
        _ticket_price = 8m;
    }

    public decimal FinishPurchase(){ return _ticket_price; }
  }

  public class Given_i_buy_a_standard_ticket{
    protected static TicketCalculator _calculator;

    Given i_buy_a_standard_movie_ticket = () => {
      _calculator = new TicketCalculator();
      _calculator.StartPurchase(115, DayOfWeek.Monday, true, false);
    };
  }
  
  [Subject("Basic admission rates")]
  public class Purchasing_general_ticket_as_an_adult_non_student : 
    Given_i_buy_a_standard_ticket {
    When i_purchase_it_for_an_adult_non_student = () => _calculator.AddTicket(33, false);
    Then i_pay_11_bucks = () => _calculator.FinishPurchase().ShouldEqual(11m);
  }

  [Subject("Basic admission rates")]
  public class Purchasing_general_ticket_as_an_adult_student : 
    Given_i_buy_a_standard_ticket{
    When i_purchase_it_for_an_adult_student = () => _calculator.AddTicket(33, true);
    Then i_pay_8_bucks = () => _calculator.FinishPurchase().ShouldEqual(8m);
  }
}