require 'spec_helper'

describe LostInTranslations::Base do

  describe '.translation_data_field =' do

    context "when it points to a real method" do
      before do
        @user_class = Struct.new(:first_name, :last_name) do
          include LostInTranslations::Base

          self.translation_data_field = :translation_json

          def translation_json
            @translation_json ||= {
              en: { first_name: 'Jon', last_name: 'Snow' },
              fr: { first_name: 'Jean', last_name: 'Neige' }
            }
          end
        end

        LostInTranslations.define_translation_methods(@user_class, :first_name)

        @user = @user_class.new('Joao', 'Neve')
      end

      it "LostInTranslations.translate must return a translation" do
        expect(LostInTranslations.translate(@user, :first_name, :en)).to eq 'Jon'
      end

      it "calling a field not translated, must return the original data" do
        I18n.with_locale(:en) do
          expect(@user.last_name).to eq 'Neve'
        end
      end

      context "and the translation data doesn't contain results" do
        it "LostInTranslations.translate must return nil" do
          expect(LostInTranslations.translate(@user, :first_name, :de)).to be_nil
        end
      end
    end

    context "when it DOENS't point to a real method" do
      before do
        @user_class = Struct.new(:first_name, :last_name) do
          include LostInTranslations::Base

          self.translation_data_field = :translation_json
        end

        LostInTranslations.define_translation_methods(@user_class, :first_name)

        @user = @user_class.new('Joao', 'Neve')
      end

      it "LostInTranslations.translate must raise an error" do
        expect { LostInTranslations.translate(@user, :first_name, :en) }.to raise_error(NotImplementedError)
      end

      it "calling a field not translated, must return the original data" do
        I18n.with_locale(:en) do
          expect(@user.last_name).to eq 'Neve'
        end
      end
    end

  end

end