active_model_serializers/test/unit/active_model/serializer/config_test.rb

require 'test_helper'

module ActiveModel
  class Serializer
    class Config
      class Test < Minitest::Test
        def test_config_const_is_an_instance_of_config
          assert_kind_of Config, CONFIG
        end

        def test_config_instance
          config = Config.new
          config.setting1 = 'value1'

          assert_equal 'value1', config.setting1
        end

        def test_each_config
          config = Config.new
          config.setting1 = 'value1'
          config.setting2 = 'value2'

          actual = {}

          config.each do |k, v|
            actual[k] = v
          end

          assert_equal({ 'setting1' => 'value1', 'setting2' => 'value2' }, actual)
        end
      end

      class ConfigTest < Minitest::Test
        def test_setup
          Serializer.setup do |config|
            config.a = 'v1'
            config.b = 'v2'
          end

          assert_equal 'v1', CONFIG.a
          assert_equal 'v2', CONFIG.b
        ensure
          CONFIG.clear
        end

        def test_config_accessors
          Serializer.setup do |config|
            config.foo = 'v1'
            config.bar = 'v2'
          end

          assert_equal 'v1', CONFIG.foo
          assert_equal 'v2', CONFIG.bar
        ensure
          CONFIG.clear
        end

        def test_acessor_when_nil
          assert_nil CONFIG.foo
          CONFIG.foo = 1
          assert_equal 1, CONFIG.foo
          assert_nil CONFIG.bar
        end
      end

      class ApplyConfigTest < Minitest::Test
        def test_apply_config_to_associations
          CONFIG.embed     = :ids
          CONFIG.embed_in_root = true
          CONFIG.key_format = :lower_camel

          association = PostSerializer._associations[:comments]
          old_association = association.dup

          association.send :initialize, association.name, association.options

          assert association.embed_ids?
          assert !association.embed_objects?
          assert association.embed_in_root
          assert_equal :lower_camel, association.key_format
          assert_equal 'post', PostSerializer.root_name
          CONFIG.plural_default_root = true
          assert_equal 'posts', PostSerializer.root_name
        ensure
          PostSerializer._associations[:comments] = old_association
          CONFIG.clear
        end
      end
    end
  end
end