Hw ep6

Gemfile

@@ -1,7 +1,6 @@
 source 'http://rubygems.org'
 
 gem 'rake'
-gem 'rspec'
-gem 'activesupport'
-gem 'activerecord'
-gem 'pg'
+gem 'minitest'
+gem 'mynyml-redgreen'
+gem 'fivemat'

Gemfile.lock

@@ -1,40 +1,18 @@
 GEM
   remote: http://rubygems.org/
   specs:
-    activemodel (3.2.3)
-      activesupport (= 3.2.3)
-      builder (~> 3.0.0)
-    activerecord (3.2.3)
-      activemodel (= 3.2.3)
-      activesupport (= 3.2.3)
-      arel (~> 3.0.2)
-      tzinfo (~> 0.3.29)
-    activesupport (3.2.3)
-      i18n (~> 0.6)
-      multi_json (~> 1.0)
-    arel (3.0.2)
-    builder (3.0.0)
-    diff-lcs (1.1.3)
-    i18n (0.6.0)
-    multi_json (1.3.4)
-    pg (0.13.2)
+    fivemat (1.0.0)
+    minitest (3.0.0)
+    mynyml-redgreen (0.7.1)
+      term-ansicolor (>= 1.0.4)
     rake (0.9.2.2)
-    rspec (2.10.0)
-      rspec-core (~> 2.10.0)
-      rspec-expectations (~> 2.10.0)
-      rspec-mocks (~> 2.10.0)
-    rspec-core (2.10.0)
-    rspec-expectations (2.10.0)
-      diff-lcs (~> 1.1.3)
-    rspec-mocks (2.10.1)
-    tzinfo (0.3.33)
+    term-ansicolor (1.0.7)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  activerecord
-  activesupport
-  pg
+  fivemat
+  minitest
+  mynyml-redgreen
   rake
-  rspec

lib/ep6.rb

@@ -0,0 +1,3 @@
+require_relative 'ep6/vehicle'
+require_relative 'ep6/automobile'
+require_relative 'ep6/motorcycle'

lib/ep6/automobile.rb

@@ -0,0 +1,32 @@
+class Automobile < Vehicle
+  attr_accessor :color
+  attr_reader :make, :model, :year
+
+  def initialize(features = {})
+    defaults = {
+      :color => 'black',
+      :make => 'ford',
+      :model => 'taurus',
+      :year => '2012'
+    }
+    features = defaults.merge(features)
+
+    @color = features[:color]
+    @make = features[:make]
+    @model = features[:model]
+    @year = features[:year]
+
+    # Now add the new instance to the @all_vehicles array via Vehicle's
+    # initialize method.
+    super()
+  end
+
+  def ==(other)
+    if @color == other.color && @make == other.make &&
+      @model == other.model && @year == other.year
+      return true
+    else
+      return false
+    end
+  end
+end

lib/ep6/motorcycle.rb

@@ -0,0 +1,11 @@
+class Motorcycle < Vehicle
+  def self.wheels
+    2
+  end
+
+  def initialize
+    # Add the new instance to the @all_vehicles array via Vehicle's
+    # initialize method.
+    super()
+  end
+end

lib/ep6/vehicle.rb

@@ -0,0 +1,24 @@
+class Vehicle
+  extend Enumerable
+
+  @all_vehicles = []
+
+  # create read/write methods for @all_vehicles
+  class << self
+    attr_accessor :all_vehicles
+  end
+
+  def initialize
+    Vehicle.all_vehicles.push self
+  end
+
+  def self.wheels
+    4
+  end
+
+  def self.each
+    @all_vehicles.each do |vehicle|
+      yield vehicle
+    end
+  end
+end

rakefile.rb

@@ -1,13 +1,11 @@
-require "rubygems"
-require "bundler/setup"
+require 'bundler/setup'
 
-require 'rspec/core/rake_task'
+require 'rake/testtask'
 
-desc 'Default: run specs.'
-task :default => :spec
+desc 'Default: run tests.'
+task :default => :test
 
-desc "Run specs"
-RSpec::Core::RakeTask.new do |t|
-  t.pattern = "**/*_spec.rb" # don't need this, it's default.
-  # Put spec opts in a file named .rspec in root
+desc "Run tests"
+Rake::TestTask.new do |t|
+  t.pattern = 'test/test_*.rb'
 end

test/test_automobile.rb

@@ -0,0 +1,75 @@
+require_relative 'test_helper'
+
+describe 'Automobile class' do
+  it 'should exist' do
+    Automobile.must_be_kind_of Class
+  end
+
+  it 'should inherit from Vehicle' do
+    Automobile.superclass.must_equal Vehicle
+  end
+
+  it 'should have a class method that returns the number of wheels' do
+    Automobile.must_respond_to :wheels
+    Automobile.wheels.must_equal 4
+  end
+
+  it 'should have default features when initialized with an empty hash' do
+    car = Automobile.new({})
+
+    car.color.must_equal 'black'
+    car.make.must_equal 'ford'
+    car.model.must_equal 'taurus'
+    car.year.must_equal '2012'
+  end
+
+  it 'should override defaults when given various values' do
+    white_car = Automobile.new({:color => 'white'})
+    mercedes = Automobile.new({:make => 'mercedes'})
+    charger = Automobile.new({:model => 'charger'})
+    classic = Automobile.new({:year => '1968'})
+
+    white_car.color.must_equal 'white'
+    mercedes.make.must_equal 'mercedes'
+    charger.model.must_equal 'charger'
+    classic.year.must_equal '1968'
+  end
+
+  it 'should accept multiple values in any order' do
+    old_charger = Automobile.new({:year => '1968', :model => 'charger'})
+    new_mercedes = Automobile.new({
+      :model => 'SE',
+      :make => 'mercedes',
+      :color => 'red',
+      :year => '2010'
+    })
+
+    old_charger.model.must_equal 'charger'
+    old_charger.year.must_equal '1968'
+
+    new_mercedes.color.must_equal 'red'
+    new_mercedes.year.must_equal '2010'
+  end
+
+  it 'should be able to change its color' do
+    car = Automobile.new
+    car.color.must_equal 'black'
+
+    car.color = 'white'
+    car.color.must_equal 'white'
+  end
+
+  it 'should be able to compare two cars' do
+    chevy = Automobile.new({
+      :color => 'red',
+      :make => 'chevy',
+      :model => 'impala',
+      :year => 1972
+    })
+    ford = Automobile.new
+    chevy_copy = chevy.dup
+
+    chevy.wont_equal ford
+    chevy.must_equal chevy_copy
+  end
+end

test/test_helper.rb

@@ -0,0 +1,5 @@
+gem 'minitest'
+require 'minitest/spec'
+require 'fivemat/minitest/autorun'
+require 'redgreen'
+require_relative '../lib/ep6'

test/test_motorcycle.rb

@@ -0,0 +1,16 @@
+require_relative 'test_helper'
+
+describe 'Motorcycle class' do
+  it 'should exist' do
+    Motorcycle.must_be_kind_of Class
+  end
+
+  it 'should inherit from Vehicle' do
+    Motorcycle.superclass.must_equal Vehicle
+  end
+
+  it 'should have a class method that returns the number of wheels' do
+    Motorcycle.must_respond_to :wheels
+    Motorcycle.wheels.must_equal 2
+  end
+end

test/test_sanity.rb

@@ -0,0 +1,9 @@
+describe 'sanity' do
+  it 'is minimally capable' do
+    true.must_be :==, true
+  end
+
+  it 'must know true from false' do
+    true.wont_be :==, false
+  end
+end

test/test_vehicle.rb

@@ -0,0 +1,34 @@
+require_relative 'test_helper'
+
+describe 'Vehicle class' do
+  it 'should exist' do
+    Vehicle.must_be_kind_of Class
+  end
+
+  it 'should have a class method that returns the number of wheels' do
+    Vehicle.must_respond_to :wheels
+    Vehicle.wheels.must_equal 4
+  end
+
+  describe 'class instance variable and enumerability' do
+    before do
+      # I don't think this should be necessary, but it is. Why?
+      Vehicle.all_vehicles = []
+    end
+
+    it 'should store all the vehicles as they are made' do
+      car = Automobile.new
+      motorcycle = Motorcycle.new
+      vehicle = Vehicle.new
+
+      Vehicle.all_vehicles.count.must_equal 3
+    end
+
+    it 'should include enumerable methods' do
+      Vehicle.must_respond_to :each
+      Vehicle.must_respond_to :select
+      Vehicle.must_respond_to :map
+      Vehicle.must_respond_to :partition
+    end
+  end
+end