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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 "as_json should keep the default order in the hash" do
json = @contact.as_json
assert_equal %w(name age created_at awesome preferences), json.keys
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 extendible" 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
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