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Takeaway Challenge

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Overview

A program to allow users to place a takeaway order and receive a confirmation sms via the Twilio api

Approach

  • I attemtped to make the program feel as intuitive as possible, printing strings to $stdout in natural language.

  • This challenge was a good opportunity to pratice making use of the dependancy injection and delegation pronciples.

  • unit & feature tested at > 99% coverage (feature tests in /spec/integration)

Usage

bundle install

  • to use the sms service, you will need to create a .env file in the root of the project directory with your Twilio account details (see examples variables below)
ACCOUNT_SID="@account_sid"
AUTH_TOKEN="@auth_token"
TWILIO_FROM="from:"
TWILIO_TO="to:"
  • Example usage:
2.4.0 :001 > require './lib/takeaway'
 => true
2.4.0 :002 > takeaway = Takeaway.new
 => #<Takeaway:0x007f89188706b0 @menu @message_service @basket>
2.4.0 :003 > takeaway.print_menu
 => special fried rice: £4.0
 => wonton soup: £3.0
 => crispy seaweed: £3.5
2.4.0 :004 > takeaway.order('wonton soup', 2)
 => 2 wonton soup added to basket
2.4.0 :005 > takeaway.order 'crispy seaweed'
 => 1 crispy seaweed added to basket
2.4.0 :006 > takeaway.order_summary
 => 2 wonton soup = £6.0
 => 1 crispy seaweed = £3.5
2.4.0 :008 > takeaway.order_total
 => "Total = £9.5"
2.4.0 :009 > takeaway.checkout(9.50)