top_seller_spec.rb

require 'spec_helper'
require 'analytics/top_seller'

RSpec.describe Analytics::TopSeller do
  before do
    Analytics::Storage.redis = InitRedis.get_test
  end
  after do
    Analytics::Storage.redis.flushdb
  end

  describe ".top" do
    before do
      Analytics::Storage.zincrby("ca_by_user", 1000, "12")
      Analytics::Storage.zincrby("ca_by_user", 12000, "13")
      Analytics::Storage.zincrby("ca_by_user", 300, "14")
    end

    it 'return the 10 top sellers' do
      expect(Analytics::TopSeller.top(2)).to eql([
        Analytics::TopSeller.new("13", 12000),
        Analytics::TopSeller.new("12", 1000),
      ])
    end

  end
end