From 6e3f5ffa778a5d2c36ffcc422b1c9742fa5eb16b Mon Sep 17 00:00:00 2001 From: ko1 Date: Mon, 7 Dec 2015 15:10:00 +0000 Subject: * string.c: introduce String#+@ and String#-@ to control String mutability. [Feature #11782] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52917 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- test/ruby/test_string.rb | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'test/ruby/test_string.rb') diff --git a/test/ruby/test_string.rb b/test/ruby/test_string.rb index 7627fe12dc..824c0e6b1c 100644 --- a/test/ruby/test_string.rb +++ b/test/ruby/test_string.rb @@ -2252,6 +2252,24 @@ class TestString < Test::Unit::TestCase end; end if [0].pack("l!").bytesize < [nil].pack("p").bytesize # enable only when string size range is smaller than memory space + + def test_uplus_minus + str = "foo" + assert_equal(false, str.frozen?) + assert_equal(false, (+str).frozen?) + assert_equal(true, (-str).frozen?) + + assert_equal(str.object_id, (+str).object_id) + assert_not_equal(str.object_id, (-str).object_id) + + str = "bar".freeze + assert_equal(true, str.frozen?) + assert_equal(false, (+str).frozen?) + assert_equal(true, (-str).frozen?) + + assert_not_equal(str.object_id, (+str).object_id) + assert_equal(str.object_id, (-str).object_id) + end end class TestString2 < TestString -- cgit v1.2.3