require 'spec_helper' describe FastJsonapi::ObjectSerializer, performance: true do include_context 'movie class' include_context 'ams movie class' include_context 'jsonapi movie class' include_context 'jsonapi-serializers movie class' include_context 'group class' include_context 'ams group class' include_context 'jsonapi group class' include_context 'jsonapi-serializers group class' before(:all) { GC.disable } after(:all) { GC.enable } SERIALIZERS = { fast_jsonapi: { name: 'Fast Serializer', hash_method: :serializable_hash, json_method: :serialized_json }, ams: { name: 'AMS serializer', speed_factor: 25, hash_method: :as_json }, jsonapi: { name: 'jsonapi-rb serializer' }, jsonapis: { name: 'jsonapi-serializers' } } context 'when testing performance of serialization' do it 'should create a hash of 1000 records in less than 50 ms' do movies = 1000.times.map { |_i| movie } expect { MovieSerializer.new(movies).serializable_hash }.to perform_under(50).ms end it 'should serialize 1000 records to jsonapi in less than 60 ms' do movies = 1000.times.map { |_i| movie } expect { MovieSerializer.new(movies).serialized_json }.to perform_under(60).ms end it 'should create a hash of 1000 records with includes and meta in less than 75 ms' do count = 1000 movies = count.times.map { |_i| movie } options = {} options[:meta] = { total: count } options[:include] = [:actors] expect { MovieSerializer.new(movies, options).serializable_hash }.to perform_under(75).ms end it 'should serialize 1000 records to jsonapi with includes and meta in less than 75 ms' do count = 1000 movies = count.times.map { |_i| movie } options = {} options[:meta] = { total: count } options[:include] = [:actors] expect { MovieSerializer.new(movies, options).serialized_json }.to perform_under(75).ms end end def print_stats(message, count, data) puts puts message name_length = SERIALIZERS.collect { |s| s[1].fetch(:name, s[0]).length }.max puts format("%-#{name_length+1}s %-10s %-10s %s", 'Serializer', 'Records', 'Time', 'Speed Up') report_format = "%-#{name_length+1}s %-10s %-10s" fast_jsonapi_time = data[:fast_jsonapi][:time] puts format(report_format, 'Fast serializer', count, fast_jsonapi_time.round(2).to_s + ' ms') data.reject { |k,v| k == :fast_jsonapi }.each_pair do |k,v| t = v[:time] factor = t / fast_jsonapi_time speed_factor = SERIALIZERS[k].fetch(:speed_factor, 1) result = factor >= speed_factor ? '✔' : '✘' puts format("%-#{name_length+1}s %-10s %-10s %sx %s", SERIALIZERS[k][:name], count, t.round(2).to_s + ' ms', factor.round(2), result) end end def run_hash_benchmark(message, movie_count, serializers) data = Hash[serializers.keys.collect { |k| [ k, { hash: nil, time: nil, speed_factor: nil }] }] serializers.each_pair do |k,v| hash_method = SERIALIZERS[k].key?(:hash_method) ? SERIALIZERS[k][:hash_method] : :to_hash data[k][:time] = Benchmark.measure { data[k][:hash] = v.send(hash_method) }.real * 1000 end print_stats(message, movie_count, data) data end def run_json_benchmark(message, movie_count, serializers) data = Hash[serializers.keys.collect { |k| [ k, { json: nil, time: nil, speed_factor: nil }] }] serializers.each_pair do |k,v| ams_json = nil json_method = SERIALIZERS[k].key?(:json_method) ? SERIALIZERS[k][:json_method] : :to_json data[k][:time] = Benchmark.measure { data[k][:json] = v.send(json_method) }.real * 1000 end print_stats(message, movie_count, data) data end context 'when comparing with AMS 0.10.x' do [1, 25, 250, 1000].each do |movie_count| it "should serialize #{movie_count} records atleast #{SERIALIZERS[:ams][:speed_factor]} times faster than AMS" do ams_movies = build_ams_movies(movie_count) movies = build_movies(movie_count) jsonapi_movies = build_jsonapi_movies(movie_count) jsonapis_movies = build_js_movies(movie_count) serializers = { fast_jsonapi: MovieSerializer.new(movies), ams: ActiveModelSerializers::SerializableResource.new(ams_movies), jsonapi: JSONAPISerializer.new(jsonapi_movies), jsonapis: JSONAPISSerializer.new(jsonapis_movies) } message = "Serialize to JSON string #{movie_count} records" json_benchmarks = run_json_benchmark(message, movie_count, serializers) message = "Serialize to Ruby Hash #{movie_count} records" hash_benchmarks = run_hash_benchmark(message, movie_count, serializers) # json expect(json_benchmarks[:fast_jsonapi][:json].length).to eq json_benchmarks[:ams][:json].length json_speed_up = json_benchmarks[:ams][:time] / json_benchmarks[:fast_jsonapi][:time] expect(json_speed_up).to be >= SERIALIZERS[:ams][:speed_factor] # hash hash_speed_up = hash_benchmarks[:ams][:time] / hash_benchmarks[:fast_jsonapi][:time] expect(hash_speed_up).to be >= SERIALIZERS[:ams][:speed_factor] end end end context 'when comparing with AMS 0.10.x and with includes and meta' do [1, 25, 250, 1000].each do |movie_count| it "should serialize #{movie_count} records atleast #{SERIALIZERS[:ams][:speed_factor]} times faster than AMS" do ams_movies = build_ams_movies(movie_count) movies = build_movies(movie_count) jsonapi_movies = build_jsonapi_movies(movie_count) jsonapis_movies = build_js_movies(movie_count) options = {} options[:meta] = { total: movie_count } options[:include] = [:actors, :movie_type] serializers = { fast_jsonapi: MovieSerializer.new(movies, options), ams: ActiveModelSerializers::SerializableResource.new(ams_movies, include: options[:include], meta: options[:meta]), jsonapi: JSONAPISerializer.new(jsonapi_movies, include: options[:include], meta: options[:meta]), jsonapis: JSONAPISSerializer.new(jsonapis_movies, include: options[:include].map { |i| i.to_s.dasherize }, meta: options[:meta]) } message = "Serialize to JSON string #{movie_count} with includes and meta" json_benchmarks = run_json_benchmark(message, movie_count, serializers) message = "Serialize to Ruby Hash #{movie_count} with includes and meta" hash_benchmarks = run_hash_benchmark(message, movie_count, serializers) # json expect(json_benchmarks[:fast_jsonapi][:json].length).to eq json_benchmarks[:ams][:json].length json_speed_up = json_benchmarks[:ams][:time] / json_benchmarks[:fast_jsonapi][:time] expect(json_speed_up).to be >= SERIALIZERS[:ams][:speed_factor] # hash hash_speed_up = hash_benchmarks[:ams][:time] / hash_benchmarks[:fast_jsonapi][:time] expect(hash_speed_up).to be >= SERIALIZERS[:ams][:speed_factor] end end end context 'when comparing with AMS 0.10.x and with polymorphic has_many' do [1, 25, 250, 1000].each do |group_count| it "should serialize #{group_count} records at least #{SERIALIZERS[:ams][:speed_factor]} times faster than AMS" do ams_groups = build_ams_groups(group_count) groups = build_groups(group_count) jsonapi_groups = build_jsonapi_groups(group_count) jsonapis_groups = build_jsonapis_groups(group_count) options = {} serializers = { fast_jsonapi: GroupSerializer.new(groups, options), ams: ActiveModelSerializers::SerializableResource.new(ams_groups), jsonapi: JSONAPISerializerB.new(jsonapi_groups), jsonapis: JSONAPISSerializerB.new(jsonapis_groups) } message = "Serialize to JSON string #{group_count} with polymorphic has_many" json_benchmarks = run_json_benchmark(message, group_count, serializers) message = "Serialize to Ruby Hash #{group_count} with polymorphic has_many" hash_benchmarks = run_hash_benchmark(message, group_count, serializers) # json expect(json_benchmarks[:fast_jsonapi][:json].length).to eq json_benchmarks[:ams][:json].length json_speed_up = json_benchmarks[:ams][:time] / json_benchmarks[:fast_jsonapi][:time] expect(json_speed_up).to be >= SERIALIZERS[:ams][:speed_factor] # hash hash_speed_up = hash_benchmarks[:ams][:time] / hash_benchmarks[:fast_jsonapi][:time] expect(hash_speed_up).to be >= SERIALIZERS[:ams][:speed_factor] end end end end