Dependencies

Ruby Version: 2.7.7p221

RSpec Version: 3.12.0

The project has a Gemfile, to install dependencies run bundle

Execution

Run using interactive ruby console

irb -r ./tax_solver.rb

Create an instance of the class TaxSolver and, for each input, call the method solve

TaxSolver.new.solve

After that, the program will be waiting for the input. Its assumed that the input ends after an empty line

2 book at 12.49
1 music CD at 14.99
1 chocolate bar at 0.85

It's also possible to pass the input via an string as the parameter to the function solve. Each line of the input should still divided by a \n (line break)

TaxSolver.new.solve("2 book at 12.49\n1 music CD at 14.99\n1 chocolate bar at 0.85\n\n")

The output will be displayed in the console

Testing

Run the tests using

rspec 

Assumptions

• Each line of the input represents a product, and will contain information regarding its name and price as well as the amount bougth
• The input end is defined by an empty line
• All lines in the input will contain a whole number at the start to represent the amount of products, with no characters or spaces before it, and it will have a space after it
• All lines in the input will end with at #, where # represents any decimal number
• If a product has imported anywhere on its line, import duty will be charged
• Products exempt of basic sales tax will contain the folling words anywhere in its line
  • book
  • chocolate
  • pills