banner_spec.rb

    describe "validation" do
      %w(http://test.com https://test.com itns://something).each do |uri|
        it "should allow valid uri: #{uri}" do
          banner = FactoryGirl.build(:banner, url: uri, enabled: true)
          expect(banner).to be_valid
        end
      end

      ["shit happens", "alsow12414@@!!!wrong", "", nil].each do |uri|
        it "should disallow valid uri: #{uri}" do
          banner = FactoryGirl.build(:banner, url: uri, enabled: true)
          expect(banner).not_to be_valid
        end
      end
    end