File: scale_spec.rb

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require 'spec_helper'

unless Numeric.method_defined? :hundred
  describe 'Numeric#hundred' do
    it 'returns positive integer for positive integer' do
      expect(1.hundred).to eql 100
    end

    it 'returns positive float for positive float' do
      expect(0.1.hundred).to eql 10.0
    end

    it 'returns false for negative integer' do
      expect(-1.hundred).to eql -100
    end

    it 'returns false for negative float' do
      expect(-0.1.hundred).to eql -10.0
    end

    it 'returns 0 for 0' do
      expect(0.hundred).to eql 0
      expect(0.0.hundred).to eql 0.0
    end
  end

  describe 'Numeric#thousand' do
    it 'returns positive integer for positive integer' do
      expect(1.thousand).to eql 1000
    end

    it 'returns positive float for positive float' do
      expect(0.1.thousand).to eql 100.0
    end

    it 'returns false for negative integer' do
      expect(-1.thousand).to eql -1000
    end

    it 'returns false for negative float' do
      expect(-0.1.thousand).to eql -100.0
    end

    it 'returns 0 for 0' do
      expect(0.thousand).to eql 0
      expect(0.0.thousand).to eql 0.0
    end
  end

  describe 'Numeric#million' do
    it 'returns positive integer for positive integer' do
      expect(1.million).to eql 1000000
    end

    it 'returns positive float for positive float' do
      expect(0.1.million).to eql 100000.0
    end

    it 'returns false for negative integer' do
      expect(-1.million).to eql -1000000
    end

    it 'returns false for negative float' do
      expect(-0.1.million).to eql -100000.0
    end

    it 'returns 0 for 0' do
      expect(0.million).to eql 0
      expect(0.0.million).to eql 0.0
    end
  end

  describe 'Numeric#billion' do
    it 'returns positive integer for positive integer' do
      expect(1.billion).to eql 1000000000
    end

    it 'returns positive float for positive float' do
      expect(0.1.billion).to eql 100000000.0
    end

    it 'returns false for negative integer' do
      expect(-1.billion).to eql -1000000000
    end

    it 'returns false for negative float' do
      expect(-0.1.billion).to eql -100000000.0
    end

    it 'returns 0 for 0' do
      expect(0.billion).to eql 0
      expect(0.0.billion).to eql 0.0
    end
  end

  describe 'Numeric#trillion' do
    it 'returns positive integer for positive integer' do
      expect(1.trillion).to eql 1000000000000
    end

    it 'returns positive float for positive float' do
      expect(0.1.trillion).to eql 100000000000.0
    end

    it 'returns false for negative integer' do
      expect(-1.trillion).to eql -1000000000000
    end

    it 'returns false for negative float' do
      expect(-0.1.trillion).to eql -100000000000.0
    end

    it 'returns 0 for 0' do
      expect(0.trillion).to eql 0
      expect(0.0.trillion).to eql 0.0
    end
  end

  describe 'Numeric#quadrillion' do
    it 'returns positive integer for positive integer' do
      expect(1.quadrillion).to eql 1000000000000000
    end

    it 'returns positive float for positive float' do
      expect(0.1.quadrillion).to eql 100000000000000.0
    end

    it 'returns false for negative integer' do
      expect(-1.quadrillion).to eql -1000000000000000
    end

    it 'returns false for negative float' do
      expect(-0.1.quadrillion).to eql -100000000000000.0
    end

    it 'returns 0 for 0' do
      expect(0.quadrillion).to eql 0
      expect(0.0.quadrillion).to eql 0.0
    end
  end
end