require 'test_helper'

class SelectTest < ActiveSupport::TestCase

  test "select requires a parent component" do
    fragment = -> {
      select :gender, ['Male', 'Female'], selected: 'Male'
    }
    assert_raises(RuntimeError) {
      ExpressTemplates.compile(&fragment)
    }
  end

  test "select comes with a label" do
    fragment = -> {
      express_form(:person) {
        select :gender
      }
    }
    assert_match '#{label_tag("person_gender", "Gender")}', ExpressTemplates.compile(&fragment)
  end

  test "select uses options_for_select when values are specified" do
    fragment = -> {
      express_form(:person) {
        select :gender, ['Male', 'Female'], selected: 'Male'
      }
    }
    assert_match 'options_for_select(["Male", "Female"], "Male")', ExpressTemplates.compile(&fragment)
  end

  test "selected option is omitted selection is taken from model" do
    fragment = -> {
      express_form(:person) {
        select :gender, ['Male', 'Female']
      }
    }
    assert_match 'options_for_select(["Male", "Female"], @person.gender)', ExpressTemplates.compile(&fragment)
  end

  test "select generates options from data when options omitted" do
    fragment = -> {
      express_form(:person) {
        select :city
      }
    }
    assert_match 'options_for_select(@person.pluck(:city).distinct, @person.city)', ExpressTemplates.compile(&fragment)
  end

  class ::Gender ; end
  class ::Person
    def self.reflect_on_association(field)
      if field.eql? :gender
        dummy_association = Object.new
        class << dummy_association
          def macro ; :belongs_to ; end
          def klass ; ::Gender ; end
        end
        return dummy_association
      end
    end
  end

  test "select uses options_from_collect... when field is relation" do
    fragment = -> {
      express_form(:person) {
        select :gender
      }
    }

    assert_match 'options_from_collection_for_select(Gender.all.select(:id, :name).order(:name), :id, :name, @person.gender)',
                  ExpressTemplates.compile(&fragment)
  end

end