active_model_serializers/test/adapter/json_api/links_test.rb

require 'test_helper'

module ActiveModelSerializers
  module Adapter
    class JsonApi
      class LinksTest < ActiveSupport::TestCase
        LinkAuthor = Class.new(::Model)
        class LinkAuthorSerializer < ActiveModel::Serializer
          link :self do
            href "//example.com/link_author/#{object.id}"
            meta stuff: 'value'
          end

          link :other, '//example.com/resource'

          link :yet_another do
            "//example.com/resource/#{object.id}"
          end
        end

        def setup
          @post = Post.new(id: 1337, comments: [], author: nil)
          @author = LinkAuthor.new(id: 1337, posts: [@post])
        end

        def test_toplevel_links
          hash = ActiveModel::SerializableResource.new(
            @post,
            adapter: :json_api,
            links: {
              self: {
                href: '//example.com/posts',
                meta: {
                  stuff: 'value'
                }
              }
            }).serializable_hash
          expected = {
            self: {
              href: '//example.com/posts',
              meta: {
                stuff: 'value'
              }
            }
          }
          assert_equal(expected, hash[:links])
        end

        def test_nil_toplevel_links
          hash = ActiveModel::SerializableResource.new(
            @post,
            adapter: :json_api,
            links: nil
          ).serializable_hash
          refute hash.key?(:links), 'No links key to be output'
        end

        def test_nil_toplevel_links_json_adapter
          hash = ActiveModel::SerializableResource.new(
            @post,
            adapter: :json,
            links: nil
          ).serializable_hash
          refute hash.key?(:links), 'No links key to be output'
        end

        def test_resource_links
          hash = serializable(@author, adapter: :json_api).serializable_hash
          expected = {
            self: {
              href: '//example.com/link_author/1337',
              meta: {
                stuff: 'value'
              }
            },
            other: '//example.com/resource',
            yet_another: '//example.com/resource/1337'
          }
          assert_equal(expected, hash[:data][:links])
        end
      end
    end
  end
end