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# frozen_string_literal: false
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_id2ref_liveness
assert_normal_exit <<-EOS
ids = []
10.times{
1_000.times{
ids << 'hello'.object_id
}
objs = ids.map{|id|
begin
ObjectSpace._id2ref(id)
rescue RangeError
nil
end
}
GC.start
objs.each{|e| e.inspect}
}
EOS
end
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_finalizer_with_super
assert_in_out_err(["-e", <<-END], "", %w(:ok), [])
class A
def foo
end
end
class B < A
def foo
1.times { super }
end
end
class C
module M
end
FINALIZER = proc do
M.module_eval(__FILE__, "", __LINE__) do
end
end
def define_finalizer
ObjectSpace.define_finalizer(self, FINALIZER)
end
end
class D
def foo
B.new.foo
end
end
C::M.singleton_class.send :define_method, :module_eval do |src, id, line|
end
GC.stress = true
10.times do
C.new.define_finalizer
D.new.foo
end
p :ok
END
end
def test_each_object
klass = Class.new
new_obj = klass.new
found = []
count = ObjectSpace.each_object(klass) do |obj|
found << obj
end
assert_equal(1, count)
assert_equal(1, found.size)
assert_same(new_obj, found[0])
end
def test_each_object_enumerator
klass = Class.new
new_obj = klass.new
found = []
counter = ObjectSpace.each_object(klass)
assert_equal(1, counter.each {|obj| found << obj})
assert_equal(1, found.size)
assert_same(new_obj, found[0])
end
def test_each_object_no_gabage
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
def test_each_object_recursive_key
assert_normal_exit(<<-'end;', '[ruby-core:66742] [Bug #10579]')
h = {["foo"]=>nil}
p Thread.current[:__recursive_key__]
end;
end
def test_each_object_singleton_class
assert_separately([], <<-End)
class C
class << self
$c = self
end
end
exist = false
ObjectSpace.each_object(Class){|o|
exist = true if $c == o
}
assert(exist, 'Bug #11360')
End
klass = Class.new
instance = klass.new
sclass = instance.singleton_class
meta = klass.singleton_class
assert_kind_of(meta, sclass)
assert_include(ObjectSpace.each_object(meta).to_a, sclass)
end
end
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