require 'test/unit' class TestObjectSpace < Test::Unit::TestCase def self.deftest_id2ref(obj) /:(\d+)/ =~ caller[0] file = $` line = $1.to_i code = <<"End" define_method("test_id2ref_#{line}") {\ o = ObjectSpace._id2ref(obj.object_id);\ assert_same(obj, o, "didn't round trip: \#{obj.inspect}");\ } End eval code, binding, file, line end deftest_id2ref(-0x4000000000000001) deftest_id2ref(-0x4000000000000000) deftest_id2ref(-0x40000001) deftest_id2ref(-0x40000000) deftest_id2ref(-1) deftest_id2ref(0) deftest_id2ref(1) deftest_id2ref(0x3fffffff) deftest_id2ref(0x40000000) deftest_id2ref(0x3fffffffffffffff) deftest_id2ref(0x4000000000000000) deftest_id2ref(:a) deftest_id2ref(:abcdefghijilkjl) deftest_id2ref(:==) deftest_id2ref(Object.new) deftest_id2ref(self) deftest_id2ref(true) deftest_id2ref(false) deftest_id2ref(nil) def test_count_objects h = {} ObjectSpace.count_objects(h) assert_kind_of(Hash, h) assert_empty(h.keys.delete_if {|x| x.is_a?(Symbol) || x.is_a?(Integer) }) assert_empty(h.values.delete_if {|x| x.is_a?(Integer) }) h = ObjectSpace.count_objects assert_kind_of(Hash, h) assert_empty(h.keys.delete_if {|x| x.is_a?(Symbol) || x.is_a?(Integer) }) assert_empty(h.values.delete_if {|x| x.is_a?(Integer) }) assert_raise(TypeError) { ObjectSpace.count_objects(1) } h0 = {:T_FOO=>1000} h = ObjectSpace.count_objects(h0) assert_same(h0, h) assert_equal(0, h0[:T_FOO]) end def test_finalizer assert_in_out_err(["-e", <<-END], "", %w(:ok :ok :ok :ok), []) a = [] ObjectSpace.define_finalizer(a) { p :ok } b = a.dup ObjectSpace.define_finalizer(a) { p :ok } !b END assert_raise(ArgumentError) { ObjectSpace.define_finalizer([], Object.new) } code = proc do |priv| <<-"CODE" fin = Object.new class << fin #{priv}def call(id) puts "finalized" end end ObjectSpace.define_finalizer([], fin) CODE end assert_in_out_err([], code[""], ["finalized"]) assert_in_out_err([], code["private "], ["finalized"]) c = EnvUtil.labeled_class("C\u{3042}").new o = Object.new assert_raise_with_message(ArgumentError, /C\u{3042}/) { ObjectSpace.define_finalizer(o, c) } end def test_each_object assert_separately([], <<-End) GC.disable eval('begin; 1.times{}; rescue; ensure; end') arys = [] ObjectSpace.each_object(Array){|ary| arys << ary } GC.enable arys.each{|ary| begin assert_equal(String, ary.inspect.class) # should not cause SEGV rescue RuntimeError # rescue "can't modify frozen File" error. end } End end end