require 'cases/helper' require 'models/contact' require 'models/automobile' require 'active_support/core_ext/object/instance_variables' class Contact include ActiveModel::Serializers::JSON include ActiveModel::Validations def attributes=(hash) hash.each do |k, v| instance_variable_set("@#{k}", v) end end remove_method :attributes if method_defined?(:attributes) def attributes instance_values end end class JsonSerializationTest < ActiveModel::TestCase def setup @contact = Contact.new @contact.name = 'Konata Izumi' @contact.age = 16 @contact.created_at = Time.utc(2006, 8, 1) @contact.awesome = true @contact.preferences = { 'shows' => 'anime' } end def teardown # set to the default value Contact.include_root_in_json = false end test "should not include root in json (class method)" do json = @contact.to_json assert_no_match %r{^\{"contact":\{}, json assert_match %r{"name":"Konata Izumi"}, json assert_match %r{"age":16}, json assert json.include?(%("created_at":#{ActiveSupport::JSON.encode(Time.utc(2006, 8, 1))})) assert_match %r{"awesome":true}, json assert_match %r{"preferences":\{"shows":"anime"\}}, json end test "should include root in json if include_root_in_json is true" do Contact.include_root_in_json = true json = @contact.to_json assert_match %r{^\{"contact":\{}, json assert_match %r{"name":"Konata Izumi"}, json assert_match %r{"age":16}, json assert json.include?(%("created_at":#{ActiveSupport::JSON.encode(Time.utc(2006, 8, 1))})) assert_match %r{"awesome":true}, json assert_match %r{"preferences":\{"shows":"anime"\}}, json end test "should include root in json (option) even if the default is set to false" do json = @contact.to_json(root: true) assert_match %r{^\{"contact":\{}, json end test "should not include root in json (option)" do json = @contact.to_json(root: false) assert_no_match %r{^\{"contact":\{}, json end test "should include custom root in json" do json = @contact.to_json(root: 'json_contact') assert_match %r{^\{"json_contact":\{}, json assert_match %r{"name":"Konata Izumi"}, json assert_match %r{"age":16}, json assert json.include?(%("created_at":#{ActiveSupport::JSON.encode(Time.utc(2006, 8, 1))})) assert_match %r{"awesome":true}, json assert_match %r{"preferences":\{"shows":"anime"\}}, json end test "should encode all encodable attributes" do json = @contact.to_json assert_match %r{"name":"Konata Izumi"}, json assert_match %r{"age":16}, json assert json.include?(%("created_at":#{ActiveSupport::JSON.encode(Time.utc(2006, 8, 1))})) assert_match %r{"awesome":true}, json assert_match %r{"preferences":\{"shows":"anime"\}}, json end test "should allow attribute filtering with only" do json = @contact.to_json(only: [:name, :age]) assert_match %r{"name":"Konata Izumi"}, json assert_match %r{"age":16}, json assert_no_match %r{"awesome":true}, json assert !json.include?(%("created_at":#{ActiveSupport::JSON.encode(Time.utc(2006, 8, 1))})) assert_no_match %r{"preferences":\{"shows":"anime"\}}, json end test "should allow attribute filtering with except" do json = @contact.to_json(except: [:name, :age]) assert_no_match %r{"name":"Konata Izumi"}, json assert_no_match %r{"age":16}, json assert_match %r{"awesome":true}, json assert json.include?(%("created_at":#{ActiveSupport::JSON.encode(Time.utc(2006, 8, 1))})) assert_match %r{"preferences":\{"shows":"anime"\}}, json end test "methods are called on object" do # Define methods on fixture. def @contact.label; "Has cheezburger"; end def @contact.favorite_quote; "Constraints are liberating"; end # Single method. assert_match %r{"label":"Has cheezburger"}, @contact.to_json(only: :name, methods: :label) # Both methods. methods_json = @contact.to_json(only: :name, methods: [:label, :favorite_quote]) assert_match %r{"label":"Has cheezburger"}, methods_json assert_match %r{"favorite_quote":"Constraints are liberating"}, methods_json end test "should return Hash for errors" do contact = Contact.new contact.errors.add :name, "can't be blank" contact.errors.add :name, "is too short (minimum is 2 characters)" contact.errors.add :age, "must be 16 or over" hash = {} hash[:name] = ["can't be blank", "is too short (minimum is 2 characters)"] hash[:age] = ["must be 16 or over"] assert_equal hash.to_json, contact.errors.to_json end test "serializable_hash should not modify options passed in argument" do options = { except: :name } @contact.serializable_hash(options) assert_nil options[:only] assert_equal :name, options[:except] end test "as_json should return a hash if include_root_in_json is true" do Contact.include_root_in_json = true json = @contact.as_json assert_kind_of Hash, json assert_kind_of Hash, json['contact'] %w(name age created_at awesome preferences).each do |field| assert_equal @contact.send(field), json['contact'][field] end end test "from_json should work without a root (class attribute)" do json = @contact.to_json result = Contact.new.from_json(json) assert_equal result.name, @contact.name assert_equal result.age, @contact.age assert_equal Time.parse(result.created_at), @contact.created_at assert_equal result.awesome, @contact.awesome assert_equal result.preferences, @contact.preferences end test "from_json should work without a root (method parameter)" do json = @contact.to_json result = Contact.new.from_json(json, false) assert_equal result.name, @contact.name assert_equal result.age, @contact.age assert_equal Time.parse(result.created_at), @contact.created_at assert_equal result.awesome, @contact.awesome assert_equal result.preferences, @contact.preferences end test "from_json should work with a root (method parameter)" do json = @contact.to_json(root: :true) result = Contact.new.from_json(json, true) assert_equal result.name, @contact.name assert_equal result.age, @contact.age assert_equal Time.parse(result.created_at), @contact.created_at assert_equal result.awesome, @contact.awesome assert_equal result.preferences, @contact.preferences end test "custom as_json should be honored when generating json" do def @contact.as_json(options); { name: name, created_at: created_at }; end json = @contact.to_json assert_match %r{"name":"Konata Izumi"}, json assert_match %r{"created_at":#{ActiveSupport::JSON.encode(Time.utc(2006, 8, 1))}}, json assert_no_match %r{"awesome":}, json assert_no_match %r{"preferences":}, json end test "custom as_json options should be extensible" do def @contact.as_json(options = {}); super(options.merge(only: [:name])); end json = @contact.to_json assert_match %r{"name":"Konata Izumi"}, json assert_no_match %r{"created_at":#{ActiveSupport::JSON.encode(Time.utc(2006, 8, 1))}}, json assert_no_match %r{"awesome":}, json assert_no_match %r{"preferences":}, json end end