num_conversion_w_tests.rb

require "minitest/autorun"

class English
  def integer_conversion(number)
  end
end

describe English do
  before do
    @english = English.new
  end

  describe "#integer_conversion" do
    describe "when paseed 476" do
      it "will return 'four hundred seventy six'" do
        @english.integer_conversion('476').must_equal 'four hundred seventy six'
      end
    end
    
    describe "when passed 3942" do
      it "will return 'three thousand nine hundred fourty two'" do
        @english.integer_conversion('476').must_equal 'three thousand nine hundred fourty two'
      end
    end
    
    describe "when passed 19" do
      it "will return 'nineteen'" do
        @english.integer_conversion('476').must_equal 'nineteen'
      end
    end

    describe "when passed -7" do
      it "will return 'negative seven'" do
        @english.integer_conversion('476').must_equal 'negative seven'
      end
    end
  end
end