require_relative 'helper' module Psych class TestHash < TestCase class X < Hash end class HashWithCustomInit < Hash attr_reader :obj def initialize(obj) @obj = obj end end class HashWithCustomInitNoIvar < Hash def initialize(obj) # *shrug* end end def setup super @hash = { :a => 'b' } end def test_referenced_hash_with_ivar a = [1,2,3,4,5] t1 = [HashWithCustomInit.new(a)] t1 << t1.first assert_cycle t1 end def test_custom_initialized a = [1,2,3,4,5] t1 = HashWithCustomInit.new(a) t2 = Psych.load(Psych.dump(t1)) assert_equal t1, t2 assert_cycle t1 end def test_custom_initialize_no_ivar t1 = HashWithCustomInitNoIvar.new(nil) t2 = Psych.load(Psych.dump(t1)) assert_equal t1, t2 assert_cycle t1 end def test_hash_subclass_with_ivars x = X.new x[:a] = 'b' x.instance_variable_set :@foo, 'bar' dup = Psych.load Psych.dump x assert_cycle x assert_equal 'bar', dup.instance_variable_get(:@foo) assert_equal X, dup.class end def test_load_with_class_syck_compatibility hash = Psych.load "--- !ruby/object:Hash\n:user_id: 7\n:username: Lucas\n" assert_equal({ user_id: 7, username: 'Lucas'}, hash) end def test_empty_subclass assert_match "!ruby/hash:#{X}", Psych.dump(X.new) x = Psych.load Psych.dump X.new assert_equal X, x.class end def test_map x = Psych.load "--- !map:#{X} { }\n" assert_equal X, x.class end def test_self_referential @hash['self'] = @hash assert_cycle(@hash) end def test_cycles assert_cycle(@hash) end def test_ref_append hash = Psych.load(<<-eoyml) --- foo: &foo hello: world bar: <<: *foo eoyml assert_equal({"foo"=>{"hello"=>"world"}, "bar"=>{"hello"=>"world"}}, hash) end end end