pandas and tigers

models/auto.rb

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+require_relative './vehicle'
+
+class Auto < Vehicle
+end

models/moto.rb

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+require_relative './vehicle'
+
+class Moto < Vehicle
+  def self.wheels
+    2
+  end
+end

models/vehicle.rb

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+class Vehicle
+  attr_accessor :color, :make, :model, :year
+
+  def initialize(options = {color: nil, make: nil, model: nil, year: nil})
+    @color = options.fetch(:color)
+    @make = options.fetch(:make)
+    @model = options.fetch(:model)
+    @year = options.fetch(:year)
+    end
+
+  def self.wheels
+    4
+  end
+end

spec/auto_spec.rb

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+require_relative '../models/auto'
+
+describe Auto do
+  before(:each) do
+    @auto = Auto.new
+  end
+
+  it "should return number of wheels" do
+    Auto.wheels.should eq(4)
+  end
+
+  it 'should have color attribute' do
+    @auto.should respond_to(:color)
+  end
+
+  it 'should have make attribute' do
+    @auto.should respond_to(:make)
+  end
+
+  it 'should have model attribute' do
+    @auto.should respond_to(:model)
+  end
+
+  it 'should have year attribute' do
+    @auto.should respond_to(:year)
+  end
+
+  it 'should accept a hash of info to update variables' do
+    auto = Auto.new(options = {:color => 'black', :make => 'Volkswagen', :model => 'Golf', :year => 2012})
+    auto.make.should eq('Volkswagen')
+  end
+
+  it 'should inherit from vehicle' do
+    @auto.is_a?(Vehicle).should be_true
+  end
+
+end

spec/moto_spec.rb

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+require_relative '../models/moto'
+
+describe Moto do
+
+  before(:each) do
+    @moto = Moto.new
+  end
+
+  it 'should inherit from Vehicle' do
+    @moto.is_a?(Vehicle).should be_true
+  end
+
+  it 'should have 2 tires' do
+    Moto.wheels.should eq(2)
+  end
+
+end

spec/vehicle_spec.rb

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+require_relative '../models/vehicle'
+
+describe Vehicle do
+end