diff options
Diffstat (limited to 'test')
-rwxr-xr-x | test/json/test_json_generate.rb | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/test/json/test_json_generate.rb b/test/json/test_json_generate.rb index 8db0b7890b..1834290944 100755 --- a/test/json/test_json_generate.rb +++ b/test/json/test_json_generate.rb @@ -334,4 +334,14 @@ EOT assert_equal true, JSON.generate(["\xea"]) end end + + def test_string_subclass + s = Class.new(String) do + def to_s; self; end + undef to_json + end + assert_nothing_raised(SystemStackError) do + assert_equal '[""]', JSON.generate([s.new]) + end + end end |