From 6a0cb1d649ecfc3e2af922c74ce82b3ff95fb12a Mon Sep 17 00:00:00 2001 From: Jean Boussier Date: Wed, 22 Jul 2020 12:47:14 +0200 Subject: Avoid allocating a string when dumping an anonymous module or class --- test/objspace/test_objspace.rb | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) (limited to 'test/objspace/test_objspace.rb') diff --git a/test/objspace/test_objspace.rb b/test/objspace/test_objspace.rb index 336b30f75a..de270583c1 100644 --- a/test/objspace/test_objspace.rb +++ b/test/objspace/test_objspace.rb @@ -503,4 +503,31 @@ class TestObjSpace < Test::Unit::TestCase assert_equal h[:immortal_symbol], h[:immortal_dynamic_symbol] + h[:immortal_static_symbol], m ;;; end + + def test_dump_allocations + object = Object.new + assert_allocations_count(3) { ObjectSpace.dump(object) } + end + + def test_anonymous_class_name + klass = Class.new + assert_allocations_count(4) { ObjectSpace.dump(klass) } + assert_allocations_count(3) { ObjectSpace.dump(klass) } + + mod = Module.new + assert_allocations_count(3) { ObjectSpace.dump(mod) } + + assert_not_include ObjectSpace.dump(Class.new), '"name"' + assert_not_include ObjectSpace.dump(Module.new), '"name"' + end + + private + + def assert_allocations_count(count) + ObjectSpace.dump(Object.new) # warming up + + before = GC.stat(:total_allocated_objects) + yield + assert_equal count, GC.stat(:total_allocated_objects) - before + end end -- cgit v1.2.3