require 'spec_helper'

describe LinkShrink::Shrinkers::Google do
  include_examples 'shared_examples'

  let(:link_shrink) { described_class.new }
  let(:google_url) { 'https://www.googleapis.com/urlshortener/v1/url' }
  let(:key) { ENV['GOOGLE_URL_KEY'] }

  describe '#sub_klass' do
    it 'returns the inherited subclass name' do
      expect(link_shrink.sub_klass).to eq('Google')
    end
  end

  describe '#base_url' do
    it 'returns the base_url for the API' do
      expect(link_shrink.base_url)
      .to eq(google_url)
    end
  end

  describe '#api_key' do
    it 'returns the API key' do
      expect(link_shrink.api_key)
      .to eq(key)
    end
  end

  describe '#body_parameters' do
    it 'returns body parameters for API request' do
      link_shrink.stub(:url).and_return('http://www.google.com')
      expect(link_shrink.body_parameters())
      .to eq("{\"longUrl\":\"http://www.google.com\"}")
    end
  end

  describe '#collection_key' do
    it 'returns nil' do
      expect(link_shrink.class.collection_key).to eq(nil)
    end
  end

  describe '#url_key' do
    it 'returns key used to extract data from response' do
      expect(link_shrink.class.url_key).to eq('id')
    end
  end
end