promotional rules and basic test setup

.gitignore

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+/.bundle/
+/.yardoc
+/Gemfile.lock
+/_yardoc/
+/coverage/
+/doc/
+/pkg/
+/spec/reports/
+/tmp/

.rspec

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+--format documentation
+--color

.travis.yml

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+language: ruby
+rvm:
+  - 2.2.1
+before_install: gem install bundler -v 1.10.6

Gemfile

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+source 'https://rubygems.org'
+
+# Specify your gem's dependencies in vinterior.gemspec
+gemspec

README.md

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+# Vinterior
+
+Welcome to your new gem! In this directory, you'll find the files you need to be able to package up your Ruby library into a gem. Put your Ruby code in the file `lib/vinterior`. To experiment with that code, run `bin/console` for an interactive prompt.
+
+TODO: Delete this and the text above, and describe your gem
+
+## Installation
+
+Add this line to your application's Gemfile:
+
+```ruby
+gem 'vinterior'
+```
+
+And then execute:
+
+    $ bundle
+
+Or install it yourself as:
+
+    $ gem install vinterior
+
+## Usage
+
+TODO: Write usage instructions here
+
+## Development
+
+After checking out the repo, run `bin/setup` to install dependencies. Then, run `rake spec` to run the tests. You can also run `bin/console` for an interactive prompt that will allow you to experiment.
+
+To install this gem onto your local machine, run `bundle exec rake install`. To release a new version, update the version number in `version.rb`, and then run `bundle exec rake release`, which will create a git tag for the version, push git commits and tags, and push the `.gem` file to [rubygems.org](https://rubygems.org).
+
+## Contributing
+
+Bug reports and pull requests are welcome on GitHub at https://github.com/[USERNAME]/vinterior.
+

Rakefile

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+require "bundler/gem_tasks"
+require 'rspec/core'
+require "rspec/core/rake_task"
+
+RSpec::Core::RakeTask.new(:spec)
+
+task :default => :spec
+
+describe 'Run Vinterior Test'
+task :run do
+
+  project_root = File.dirname(File.absolute_path(__FILE__))
+  Dir.glob(project_root + '/lib/*') { |file| require file }
+
+  promo_rules = []
+  promo_rules << PromoRule.discount_rule( 60, 10 )
+  promo_rules << PromoRule.multi_discount_rule('001', 2, 8.50)
+end

bin/console

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+#!/usr/bin/env ruby
+
+require "bundler/setup"
+require "vinterior"
+
+# You can add fixtures and/or initialization code here to make experimenting
+# with your gem easier. You can also use a different console, if you like.
+
+# (If you use this, don't forget to add pry to your Gemfile!)
+# require "pry"
+# Pry.start
+
+require "irb"
+IRB.start

bin/setup

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+#!/bin/bash
+set -euo pipefail
+IFS=$'\n\t'
+
+bundle install
+
+# Do any other automated setup that you need to do here

lib/promo_rule.rb

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+class PromoRule
+  attr_reader :type, :block
+
+  TYPE = { discount: 1, multi_discount: 2 }
+
+  def initialize(type, &block)
+    @type   = type
+    @block  = block
+  end
+
+  def apply(*args)
+    block.call(args)
+  end
+
+  def self.discount_rule(minimum_spend, percentage_discount)
+    PromoRule.new(PromoRule::TYPE[:discount]) do |discount_total|
+      if discount_total >= minimum_spend
+        discount_total - discount_total*percentage_discount/100
+      else
+        discount_total
+      end
+    end
+  end
+
+  def self.multi_discount_rule(product_code, qualifying_quantity, discount_price)
+    PromoRule.new(PromoRule::TYPE[:multi_discount]) do |code, quantity|
+      if code == product_code && quantity >= qualifying_quantity
+        discounted_price
+      end
+    end
+  end
+
+end

lib/vinterior.rb

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+require "vinterior/version"
+
+module Vinterior
+  # Your code goes here...
+end

lib/vinterior/version.rb

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+module Vinterior
+  VERSION = "0.1.0"
+end

spec/promo_rule_spec.rb

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+require 'spec_helper'
+
+describe PromoRule do
+  subject { PromoRule.new(PromoRule::TYPE[:discount]) {} }
+
+  describe '#type' do
+    it 'should return type as value' do
+      expect(subject.type).to eq(1)
+    end
+  end
+
+
+end

spec/spec_helper.rb

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+#$LOAD_PATH.unshift File.expand_path('../../lib', __FILE__)
+#require 'vinterior'
+
+project_root = File.dirname(File.absolute_path(__FILE__))
+Dir.glob(project_root + '/../lib/*') { |file| require file }
+
+# See http://rubydoc.info/gems/rspec-core/RSpec/Core/Configuration
+RSpec.configure do |config|
+  config.run_all_when_everything_filtered = true
+  config.filter_run :focus
+
+  # Run specs in random order to surface order dependencies. If you find an
+  # order dependency and want to debug it, you can fix the order by providing
+  # the seed, which is printed after each run.
+  #     --seed 1234
+  config.order = 'random'
+end

spec/vinterior_spec.rb

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+require 'spec_helper'
+
+describe Vinterior do
+  it 'has a version number' do
+    expect(Vinterior::VERSION).not_to be nil
+  end
+
+  it 'does something useful' do
+    expect(false).to eq(false)
+  end
+end

update.js.erb

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+$("ul.errors").html("")
+<% if @od.errors[:route_id].any? %>
+$(".route_id_errors").html('<%= "Route #{@od.errors[:route_id].first}" %>')
+
+  //top error box
+  //<% @product.errors.full_messages.each do |message| %>
+    //$("ul.errors").append($("<li />").html("<%= message.html_safe %>"))
+  //<% end %>
+
+<% else %>
+  $(".od-index").html("<%= escape_javascript(render 'index') %>")
+  $("#sales_order").val('')
+  $("#od-modal").modal("hide")
+<% end %>

update0.js.erb

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+$("ul.errors").html("")
+<% if @od.errors[:route_id].any? %>
+$(".route_id_errors").html('<%= "Route #{@od.errors[:route_id].first}" %>')
+
+  //top error box
+  //<% @product.errors.full_messages.each do |message| %>
+    //$("ul.errors").append($("<li />").html("<%= message.html_safe %>"))
+  //<% end %>
+
+<% else %>
+  $(".od-index").html("<%= escape_javascript(render 'index') %>")
+  $("#sales_order").val('')
+  $("#od-modal").modal("hide")
+<% end %>

vinterior.gemspec

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+# coding: utf-8
+lib = File.expand_path('../lib', __FILE__)
+$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
+require 'vinterior/version'
+
+Gem::Specification.new do |spec|
+  spec.name          = "vinterior"
+  spec.version       = Vinterior::VERSION
+  spec.authors       = ["maxmills"]
+  spec.email         = ["[email protected]"]
+
+  spec.summary       = %q{TODO: Write a short summary, because Rubygems requires one.}
+  spec.description   = %q{TODO: Write a longer description or delete this line.}
+  spec.homepage      = "TODO: Put your gem's website or public repo URL here."
+
+  # Prevent pushing this gem to RubyGems.org by setting 'allowed_push_host', or
+  # delete this section to allow pushing this gem to any host.
+  if spec.respond_to?(:metadata)
+    spec.metadata['allowed_push_host'] = "TODO: Set to 'http://mygemserver.com'"
+  else
+    raise "RubyGems 2.0 or newer is required to protect against public gem pushes."
+  end
+
+  spec.files         = `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
+  spec.bindir        = "exe"
+  spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
+  spec.require_paths = ["lib"]
+
+  spec.add_development_dependency "bundler", "~> 1.10"
+  spec.add_development_dependency "rake", "~> 10.0"
+  spec.add_development_dependency "rspec"
+end