active_model_serializers/test/adapter/json/collection_test.rb

require 'test_helper'

module ActiveModel
  class Serializer
    module Adapter
      class Json
        class Collection < ActiveSupport::TestCase
          def setup
            @author = Author.new(id: 1, name: 'Steve K.')
            @first_post = Post.new(id: 1, title: 'Hello!!', body: 'Hello, world!!')
            @second_post = Post.new(id: 2, title: 'New Post', body: 'Body')
            @first_post.comments = []
            @second_post.comments = []
            @first_post.author = @author
            @second_post.author = @author
            @blog = Blog.new(id: 1, name: 'My Blog!!')
            @first_post.blog = @blog
            @second_post.blog = nil

            ActionController::Base.cache_store.clear
          end

          def test_with_serializer_option
            @blog.special_attribute = 'Special'
            @blog.articles = [@first_post, @second_post]
            serializer = CollectionSerializer.new([@blog], serializer: CustomBlogSerializer)
            adapter = ActiveModel::Serializer::Adapter::Json.new(serializer)

            expected = { blogs: [{
              id: 1,
              special_attribute: 'Special',
              articles: [{ id: 1, title: 'Hello!!', body: 'Hello, world!!' }, { id: 2, title: 'New Post', body: 'Body' }]
            }] }
            assert_equal expected, adapter.serializable_hash
          end

          def test_include_multiple_posts
            serializer = CollectionSerializer.new([@first_post, @second_post])
            adapter = ActiveModel::Serializer::Adapter::Json.new(serializer)

            expected = { posts: [{
              title: 'Hello!!',
              body: 'Hello, world!!',
              id: 1,
              comments: [],
              author: {
                id: 1,
                name: 'Steve K.'
              },
              blog: {
                id: 999,
                name: 'Custom blog'
              }
            }, {
              title: 'New Post',
              body: 'Body',
              id: 2,
              comments: [],
              author: {
                id: 1,
                name: 'Steve K.'
              },
              blog: {
                id: 999,
                name: 'Custom blog'
              }
            }] }
            assert_equal expected, adapter.serializable_hash
          end

          def test_root_is_underscored
            virtual_value = VirtualValue.new(id: 1)
            serializer = CollectionSerializer.new([virtual_value])
            adapter = ActiveModel::Serializer::Adapter::Json.new(serializer)

            assert_equal 1, adapter.serializable_hash[:virtual_values].length
          end

          def test_include_option
            serializer = CollectionSerializer.new([@first_post, @second_post])
            adapter = ActiveModel::Serializer::Adapter::Json.new(serializer, include: '')
            actual = adapter.serializable_hash
            expected = { posts: [{ id: 1, title: 'Hello!!', body: 'Hello, world!!' },
                                 { id: 2, title: 'New Post', body: 'Body' }] }

            assert_equal(expected, actual)
          end
        end
      end
    end
  end
end