This is a small repo containing toy Ruby projects I've created. Some were written as part of code challenges in interview processes. The bowling project is an exception, I'm writing that to practice test-driven development in RSpec.
Clone this repo, make sure you're running at least Ruby 2.5.5 (I use rbenv to manage environments), install RSpec, and off you go!
git clone https://github.com/Eiriksmal/toy-ruby-projects.gitcd ruby-samples/bundler installrbenv --format doc- See a bunch of green text for passing tests. 👍
RSpec's docs start off by writing a simple test for a bowling simulator, then building out the code for the first test. Bowling has weird rules that are easy to implement, in part, but challenging to fully implement. I figure this is a good chance to think through the optimal Ruby data structures for storing frame information and tracking spares and strikes across throws.
I'm not sure the code fully embodies the Ruby spirit, but I strove to purge the inevitable PHP smells from the files. It seems like it would be more Ruby to remove the parameters from reset_frame? and create a strike! and spare! method, but leaning on that many class variables seems very alien to me. Is that what Ruby prefers, over passing local variables into a method? Please let me know!
This program calculates purchase prices for movie tickets, using a predefined series of RSpec tests. The interface and business rules for the ticket prices are detailed below. The test consisted of this readme, requiring careful scrutiny of the ticket price edge cases, and the existing RSpec tests. I wrote all the logic in /lib/movie_ticket_purchase.rb.
You can run the tests with a simple rspec --format doc from the root directory.
The Base Admission Rate cover movies to be viewed on a regular weekday (see "Special Movie Day" below), in 2D, with a length of <= 120 minutes, viewed from the main seating area (there is also a balcony seating area, which is much fancier).
- General Admission, $11.00/ticket
- Students (where 13 <= age < 64 years of age), $8.00/ticket
- Senior Citizen (65 & older), $6.00/ticket
- Children (under 13), $5.50/ticket
- Group Pricing (if 20 people or more), max base rate of $6.00/ticket (i.e. tickets for 30 children, 2D, Monday showing, 90 minutes, main seating area would cost
30 * 5.50instead of30 * 6.00)
There are some exceptional cases which can cause us to add/subtract from a ticket's price:
- If watching a 3D movie, add $3.00/ticket
- If the movie's duration is greater than 120 minutes, add $1.50/ticket
- On Special Movie Day (Thursday, but does not apply if group-pricing), subtract $2.00/ticket
- On Weekends (Saturday and Sunday), add $1.50/ticket
- If seated in the balcony area, add $2.00/ticket
class MovieTicketPurchase
def initialize(movie_duration_minutes, day_of_week, is_balcony_seats, is_3d)
end
def add_ticket(viewer_age, viewer_is_student)
end
def finish
end
end...and is used like so:
p = MovieTicketPurchase.new(90, :tuesday, false, false)
p.add_ticket(35, false)
p.add_ticket(35, false)
p.add_ticket(35, false)
p.add_ticket(35, false)
p.finish() # 44.00