require 'spec_helper'

describe Numeric do

  describe "#multiple_of?" do
    it "to be true" do
      expect(9.multiple_of?(3)).to eq(true)
    end

    it "to be false" do
      expect(10.multiple_of?(3)).to eq(false)
    end
  end

  describe "#negative?" do
    it "to be true" do
      expect(-1.negative?).to eq(true)
    end

    it "to be false" do
      expect(1.negative?).to eq(false)
    end
  end

  describe "#positive?" do
    it "to be true" do
      expect(1.positive?).to eq(true)
    end

    it "to be false" do
      expect(-1.positive?).to eq(false)
    end
  end

end