binge_serie_spec.rb

require 'rails_helper'

describe BingeSerie do
  it { should validate_presence_of   :title}
  it { should validate_presence_of   :description}
  it { should validate_presence_of   :image}
  it { should have_many :binge_episodes}

  describe "#seasons" do
    let(:series) { create(:binge_serie) }
    subject { series.seasons }

    context "without any episodes" do
      it { is_expected.to eq [] }
    end

    context "with a single episode" do
      let(:season) { 1 }
      let!(:episode) { create(:binge_episode, season: season, binge_serie: series) }

      it { is_expected.to eq [ episode.season ] }
    end

    context "with multiple episodes" do
      let(:season1) { 1 }
      let(:season2) { 2 }
      let(:season3) { 2 }

      let!(:episodes2) { create_list(:binge_episode, 3, season: season2, binge_serie: series) }
      let!(:episodes1) { create_list(:binge_episode, 3, season: season1, binge_serie: series) }

      it "orders the seasons and returns a unique list" do
        is_expected.to eq [ season1, season2 ]
      end

      it "does not contain seasons from episodes that are not part of this series" do
        create_list(:binge_episode, 3, season: 3)
        is_expected.to eq [ season1, season2 ]
        is_expected.not_to include(3)
      end
    end
  end
end