require 'test/unit' require 'yaml' module Syck class TestYamlProperties < Test::Unit::TestCase class Foo attr_reader :a, :b, :c def initialize @a = 1 @b = 2 @c = 3 end def to_yaml_properties [:@a, :@b] end end def test_object_dump_yaml_properties foo = YAML.load(YAML.dump(Foo.new)) assert_equal 1, foo.a assert_equal 2, foo.b assert_nil foo.c end class Bar < Struct.new(:foo, :bar) attr_reader :baz def initialize *args super @baz = 'hello' end def to_yaml_properties [] end end def test_struct_dump_yaml_properties bar = YAML.load(YAML.dump(Bar.new('a', 'b'))) assert_equal 'a', bar.foo assert_equal 'b', bar.bar assert_nil bar.baz end def test_string_dump string = "okonomiyaki" class << string def to_yaml_properties [:@tastes] end end string.instance_variable_set(:@tastes, 'delicious') v = YAML.load YAML.dump string assert_equal 'delicious', v.instance_variable_get(:@tastes) end def test_string_load str = YAML.load("--- !str \nstr: okonomiyaki\n:@tastes: delicious\n") assert_equal 'okonomiyaki', str assert_equal 'delicious', str.instance_variable_get(:@tastes) end end end