CLI

Gemfile.lock

@@ -2,21 +2,54 @@ PATH
   remote: .
   specs:
     luhn (0.1.1)
+      thor (~> 0.14.6)
 
 GEM
   remote: http://rubygems.org/
   specs:
     ansi (1.3.0)
+    aruba (0.4.11)
+      childprocess (>= 0.2.3)
+      cucumber (>= 1.1.1)
+      ffi (>= 1.0.11)
+      rspec (>= 2.7.0)
+    builder (3.0.0)
+    childprocess (0.3.2)
+      ffi (~> 1.0.6)
+    cucumber (1.1.9)
+      builder (>= 2.1.2)
+      diff-lcs (>= 1.1.2)
+      gherkin (~> 2.9.0)
+      json (>= 1.4.6)
+      term-ansicolor (>= 1.0.6)
+    diff-lcs (1.1.3)
+    ffi (1.0.11)
+    gherkin (2.9.3)
+      json (>= 1.4.6)
+    json (1.7.3)
     minitest (2.6.0)
     rake (0.9.2)
+    rspec (2.8.0)
+      rspec-core (~> 2.8.0)
+      rspec-expectations (~> 2.8.0)
+      rspec-mocks (~> 2.8.0)
+    rspec-core (2.8.0)
+    rspec-expectations (2.8.0)
+      diff-lcs (~> 1.1.2)
+    rspec-mocks (2.8.0)
+    term-ansicolor (1.0.7)
+    thor (0.14.6)
     turn (0.8.2)
       ansi (>= 1.2.2)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
+  aruba (~> 0.4.11)
+  cucumber (~> 1.1.4)
   luhn!
   minitest (~> 2.6.0)
   rake
+  rspec (~> 2.8.0)
   turn

bin/ruby_luhn

@@ -0,0 +1,7 @@
+#!/usr/bin/env ruby
+require 'luhn'
+require 'luhn/cli'
+
+CLI.start
+
+

bin/ruby_luhn~

@@ -0,0 +1,6 @@
+#!/usr/bin/env ruby
+require 'luhn'
+require 'luhn/cli'
+CLI.start
+
+

bin/ruby_lunh~

@@ -0,0 +1,7 @@
+#!/usr/bin/env ruby
+# -*- mode: ruby -*-
+
+require 'luhn/cli'
+CLI.start
+
+

features/calculate.feature

@@ -0,0 +1,34 @@
+Feature: calculate luhn check digit
+
+  In order to get the valid IMEI numbers
+  As a user
+  I want to calculate the luhn check digit
+
+  Scenario: calculate check digit for one number
+    When I run `ruby_luhn calculate 35431604559642`
+    Then the output should contain "> 354316045596428"
+
+  Scenario: calculate check digit for multiple numbers
+    When I run `ruby_luhn calculate` interactively
+    And I type "35431604559642"
+    And I type "35431604559639"
+    And I type "35431604559620"
+    And I type "exit"
+    Then the output should contain "> 354316045596428"
+    Then the output should contain "> 354316045596394"
+    Then the output should contain "> 354316045596204"
+
+  Scenario: reject invalid input
+    When I run `ruby_luhn calculate 3543160d559642`
+    Then the output should contain "> 3543160d559642 is not a valid number"
+
+  Scenario: reject invalid input for multiple numbers
+    When I run `ruby_luhn calculate` interactively
+    And I type "35431604559642"
+    And I type "3543160d59e639"
+    And I type "35431604559620"
+    And I type "exit"
+    Then the output should contain "> 354316045596428"
+    Then the output should contain "> 3543160d59e639 is not a valid number"
+    Then the output should contain "> 354316045596204"
+

features/calculate.feature~

@@ -0,0 +1,24 @@
+Feature: calculate luhn check digit
+
+  In order to get the valid IMEI numbers
+  As a user
+  I want to calculate the luhn check digit
+
+  Scenario: calculate check digit for one number
+    When I run `ruby_luhn calculate 35431604559642`
+    Then the output should contain "> 354316045596428"
+
+  Scenario: calculate check digit for multiple numbers
+    When I run `ruby_luhn calculate` interactively
+    And I type "35431604559642"
+    And I type "35431604559639"
+    And I type "35431604559620"
+    And I type "exit"
+    Then the output should contain "> 354316045596428"
+    Then the output should contain "> 354316045596394"
+    Then the output should contain "> 354316045596204"
+
+  Scenario: reject invalid input
+    When I run `ruby_luhn calculate 3543160d559642`
+    Then the output should contain "> 3543160d559642 is not a valid number"
+

features/support/env.rb

@@ -0,0 +1,2 @@
+require 'aruba/api'
+require 'aruba/cucumber'

features/validate.feature

@@ -0,0 +1,29 @@
+Feature: validate luhn check digit
+
+  In order to verify IMEI numbers
+  As a user
+  I want to verify the luhn check digit
+
+  Scenario: validate check digit for one number
+    When I run `ruby_luhn validate 354316045596428`
+    Then the output should contain "> 354316045596428  correct"
+
+   Scenario: reject invalid input
+    When I run `ruby_luhn validate 354316035596428`
+    Then the output should contain "> 354316035596428  incorrect"
+
+
+  Scenario: reject invalid input
+    When I run `ruby_luhn validate 3543160d559642`
+    Then the output should contain "> 3543160d559642  invalid number"
+
+  Scenario: validate check digit for multiple numbers
+    When I run `ruby_luhn validate` interactively
+    And I type "354316045596428"
+    And I type "354316045596393"
+    And I type "354316045596203"
+    And I type "exit"
+    Then the output should contain "> 354316045596428  correct"
+    Then the output should contain "> 354316045596393  incorrect"
+    Then the output should contain "> 354316045596203  incorrect"
+

features/validate.feature~

@@ -0,0 +1,29 @@
+Feature: validate luhn check digit
+
+  In order to verify IMEI numbers
+  As a user
+  I want to verify the luhn check digit
+
+  Scenario: validate check digit for one number
+    When I run `ruby_luhn validate 354316045596428`
+    Then the output should contain "> 354316045596428  correct"
+
+   Scenario: reject invalid input
+    When I run `ruby_luhn validate 354316035596428`
+    Then the output should contain "> 354316035596428  incorrect"
+
+
+  Scenario: reject invalid input
+    When I run `ruby_luhn validate 3543160d559642`
+    Then the output should contain "> 3543160d559642  invalid number"
+
+  Scenario: validate check digit for multiple numbers
+    When I run `ruby_luhn validate` interactively
+    And I type "354316045596428"
+    And I type "354316045596393"
+    And I type "354316045596203"
+    And I type "exit"
+    Then the output should contain "> 354316045596428  correct"
+    Then the output should contain "> 3543160455963943  incorrect"
+    Then the output should contain "> 3543160455962043  incorrect"
+

lib/luhn/cli.rb

@@ -0,0 +1,70 @@
+require "thor"
+
+class CLI < Thor 
+  desc "calculate NUMBER", "calculate the luhn check digit of the number. In the interactive mode type exit to terminate"
+  def calculate(number=nil)
+    if number.nil?
+      continue = true 
+      while continue
+        number = ask("number? ")
+        if number.eql? "exit"
+          continue = false
+        end
+        print_number number
+      end      
+    else
+      print_number number
+    end
+  end
+
+  desc "validate NUMBER", "validate the luhn check digit of the number. In the interactive mode type exit to terminate"
+  def validate(number=nil)
+    get_input_number(number) do |input_number|
+      print_validity input_number
+    end
+  end
+
+  private
+  def get_input_number(number)
+    if number.nil?
+      continue = true 
+      while continue
+        number = ask("number? ")
+        if number.eql? "exit"
+          continue = false
+        end
+        yield number
+      end      
+    else
+      yield number
+    end
+  end
+
+  def print_validity(number)
+    if is_number?(number)
+      if Luhn.valid?(number)
+        say "> " + number + "  correct"
+      else
+        say "> " + number + "  incorrect"
+      end
+    else
+      say "> " + number + "  invalid number"
+    end
+  end
+
+  def print_number(number)
+    if is_number? number
+      say "> " + number + Luhn.control_digit(number).to_s
+    else
+      say "> " + number + " is not a valid number"
+    end    
+  end
+
+  def is_number?(number)
+    if number.match(/\D/)
+      false
+    else
+      true
+    end
+  end
+end

lib/luhn/cli.rb~

@@ -0,0 +1,70 @@
+require "thor"
+
+class CLI < Thor 
+  desc "calculate NUMBER", "calculate the luhn check digit of the number. In the interactive mode type exit to terminate"
+  def calculate(number=nil)
+    if number.nil?
+      continue = true 
+      while continue
+        number = ask("number? ")
+        if number.eql? "exit"
+          continue = false
+        end
+        print_number number
+      end      
+    else
+      print_number number
+    end
+  end
+
+  desc "validate NUMBER", "validate the luhn check digit of the number. In the interactive mode type exit to terminate"
+  def validate(number)
+    get_input_number(number) do |input_number|
+      print_validity input_number
+    end
+  end
+
+  private
+  def get_input_number(number)
+    if number.nil?
+      continue = true 
+      while continue
+        number = ask("number? ")
+        if number.eql? "exit"
+          continue = false
+        end
+        yield number
+      end      
+    else
+      yield number
+    end
+  end
+
+  def print_validity(number)
+    if is_number?(number)
+      if Luhn.valid?(number)
+        say "> " + number + "  correct"
+      else
+        say "> " + number + "  incorrect"
+      end
+    else
+      say "> " + number + "  invalid number"
+    end
+  end
+
+  def print_number(number)
+    if is_number? number
+      say "> " + number + Luhn.control_digit(number).to_s
+    else
+      say "> " + number + " is not a valid number"
+    end    
+  end
+
+  def is_number?(number)
+    if number.match(/\D/)
+      false
+    else
+      true
+    end
+  end
+end

luhn.gemspec

@@ -12,5 +12,10 @@ Gem::Specification.new do |s|
   s.platform     = Gem::Platform::RUBY
   s.files        = Dir.glob("{lib,spec}/**/*") + %w[LICENSE README.rdoc]
 
+  s.add_dependency 'thor', '~> 0.14.6'
+
   s.add_development_dependency 'minitest', '~> 2.6.0'
-end
+  s.add_development_dependency 'cucumber', '~> 1.1.4'
+  s.add_development_dependency 'aruba', '~> 0.4.11'
+  s.add_development_dependency 'rspec', '~> 2.8.0'
+end

luhn.gemspec~

@@ -0,0 +1,16 @@
+# encoding: UTF-8
+require File.expand_path('../lib/luhn/version', __FILE__)
+
+Gem::Specification.new do |s|
+  s.name         = 'luhn'
+  s.homepage     = 'http://github.com/joeljunstrom/ruby_luhn'
+  s.summary      = 'A small implementation of the Luhn algorithm.'
+  s.require_path = 'lib'
+  s.authors      = ['Joel Junström']
+  s.email        = ['[email protected]']
+  s.version      = Luhn::Version
+  s.platform     = Gem::Platform::RUBY
+  s.files        = Dir.glob("{lib,spec}/**/*") + %w[LICENSE README.rdoc]
+
+  s.add_development_dependency 'minitest', '~> 2.6.0'
+end