path: root/activerecord/test/cases/finder_respond_to_test.rb

# frozen_string_literal: true

require "cases/helper"
require "models/topic"

class FinderRespondToTest < ActiveRecord::TestCase
  fixtures :topics

  def test_should_preserve_normal_respond_to_behaviour_on_base
    assert_respond_to ActiveRecord::Base, :new
    assert_not_respond_to ActiveRecord::Base, :find_by_something
  end

  def test_should_preserve_normal_respond_to_behaviour_and_respond_to_newly_added_method
    Topic.singleton_class.define_method(:method_added_for_finder_respond_to_test) { }
    assert_respond_to Topic, :method_added_for_finder_respond_to_test
  ensure
    Topic.singleton_class.remove_method :method_added_for_finder_respond_to_test
  end

  def test_should_preserve_normal_respond_to_behaviour_and_respond_to_standard_object_method
    assert_respond_to Topic, :to_s
  end

  def test_should_respond_to_find_by_one_attribute_before_caching
    ensure_topic_method_is_not_cached(:find_by_title)
    assert_respond_to Topic, :find_by_title
  end

  def test_should_respond_to_find_by_with_bang
    ensure_topic_method_is_not_cached(:find_by_title!)
    assert_respond_to Topic, :find_by_title!
  end

  def test_should_respond_to_find_by_two_attributes
    ensure_topic_method_is_not_cached(:find_by_title_and_author_name)
    assert_respond_to Topic, :find_by_title_and_author_name
  end

  def test_should_respond_to_find_all_by_an_aliased_attribute
    ensure_topic_method_is_not_cached(:find_by_heading)
    assert_respond_to Topic, :find_by_heading
  end

  def test_should_not_respond_to_find_by_one_missing_attribute
    assert_not_respond_to Topic, :find_by_undertitle
  end

  def test_should_not_respond_to_find_by_invalid_method_syntax
    assert_not_respond_to Topic, :fail_to_find_by_title
    assert_not_respond_to Topic, :find_by_title?
    assert_not_respond_to Topic, :fail_to_find_or_create_by_title
    assert_not_respond_to Topic, :find_or_create_by_title?
  end

  private
    def ensure_topic_method_is_not_cached(method_id)
      Topic.singleton_class.remove_method method_id if Topic.public_methods.include? method_id
    end
end