spec/grape/presenters/presenter_spec.rb

# frozen_string_literal: true

describe Grape::Presenters::Presenter do
  subject { dummy_class.new }

  let(:dummy_class) do
    Class.new do
      include Grape::DSL::InsideRoute

      attr_reader :env, :request, :new_settings

      def initialize
        @env = {}
        @header = {}
        @new_settings = { namespace_inheritable: {}, namespace_stackable: {} }
      end
    end
  end

  describe 'represent' do
    let(:object_mock) do
      Object.new
    end

    it 'represent object' do
      expect(described_class.represent(object_mock)).to eq object_mock
    end
  end

  describe 'present' do
    let(:hash_mock) do
      { key: :value }
    end

    describe 'instance' do
      before do
        subject.present hash_mock, with: described_class
      end

      it 'presents dummy hash' do
        expect(subject.body).to eq hash_mock
      end
    end

    describe 'multiple presenter' do
      let(:hash_mock1) do
        { key1: :value1 }
      end

      let(:hash_mock2) do
        { key2: :value2 }
      end

      describe 'instance' do
        before do
          subject.present hash_mock1, with: described_class
          subject.present hash_mock2, with: described_class
        end

        it 'presents both dummy presenter' do
          expect(subject.body[:key1]).to eq hash_mock1[:key1]
          expect(subject.body[:key2]).to eq hash_mock2[:key2]
        end
      end
    end
  end
end