# frozen_string_literal: true

require 'spec_helper'

RSpec.describe Gitlab::Cache::Helpers, :use_clean_rails_redis_caching do
  subject(:instance) { Class.new.include(described_class).new }

  let_it_be(:project) { create(:project, :repository) }
  let_it_be(:user) { create(:user) }

  let(:presenter) { MergeRequestSerializer.new(current_user: user, project: project) }

  before do
    # We have to stub #render as it's a Rails controller method unavailable in
    # the module by itself
    allow(instance).to receive(:render) { |data| data }
    allow(instance).to receive(:current_user) { user }
  end

  describe "#render_cached" do
    subject do
      instance.render_cached(presentable, **kwargs)
    end

    let(:kwargs) do
      {
        with: presenter,
        project: project
      }
    end

    context 'single object' do
      let_it_be(:presentable) { create(:merge_request, source_project: project, source_branch: 'wip') }

      it_behaves_like 'object cache helper'
    end

    context 'collection of objects' do
      let_it_be(:presentable) do
        [
          create(:merge_request, source_project: project, source_branch: 'fix'),
          create(:merge_request, source_project: project, source_branch: 'master')
        ]
      end

      it_behaves_like 'collection cache helper'
    end
  end
end