diff options
| -rw-r--r-- | activesupport/lib/active_support/core_ext/object/deep_dup.rb | 1 | ||||
| -rw-r--r-- | activesupport/test/core_ext/object/deep_dup_test.rb | 6 |
2 files changed, 7 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/core_ext/object/deep_dup.rb b/activesupport/lib/active_support/core_ext/object/deep_dup.rb index 0191d2e973..ad5b2af161 100644 --- a/activesupport/lib/active_support/core_ext/object/deep_dup.rb +++ b/activesupport/lib/active_support/core_ext/object/deep_dup.rb @@ -40,6 +40,7 @@ class Hash # dup[:a][:c] # => "c" def deep_dup each_with_object(dup) do |(key, value), hash| + hash.delete(key) hash[key.deep_dup] = value.deep_dup end end diff --git a/activesupport/test/core_ext/object/deep_dup_test.rb b/activesupport/test/core_ext/object/deep_dup_test.rb index 91d558dbb5..38fbe1f836 100644 --- a/activesupport/test/core_ext/object/deep_dup_test.rb +++ b/activesupport/test/core_ext/object/deep_dup_test.rb @@ -50,4 +50,10 @@ class DeepDupTest < ActiveSupport::TestCase assert dup.instance_variable_defined?(:@a) end + def test_deep_dup_with_hash_class_key + hash = { Fixnum => 1 } + dup = hash.deep_dup + assert_equal dup.keys.length, 1 + end + end |