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-rw-r--r--actionpack/lib/action_dispatch/middleware/public_exceptions.rb5
-rw-r--r--activerecord/CHANGELOG.md6
-rw-r--r--activerecord/lib/active_record/associations/preloader/association.rb29
-rw-r--r--activerecord/lib/active_record/connection_adapters/column.rb2
-rw-r--r--activerecord/lib/active_record/connection_adapters/postgresql/column.rb6
-rw-r--r--activerecord/lib/active_record/connection_adapters/postgresql/oid.rb4
-rw-r--r--activerecord/lib/active_record/connection_adapters/type/value.rb4
-rw-r--r--activerecord/test/cases/adapters/postgresql/datatype_test.rb36
-rw-r--r--activerecord/test/cases/adapters/postgresql/money_test.rb54
-rw-r--r--activerecord/test/cases/associations/belongs_to_associations_test.rb13
-rw-r--r--activerecord/test/models/comment.rb5
-rw-r--r--activerecord/test/schema/schema.rb3
-rw-r--r--activesupport/CHANGELOG.md7
-rw-r--r--activesupport/lib/active_support/core_ext/hash/keys.rb54
-rw-r--r--activesupport/test/core_ext/hash_ext_test.rb22
15 files changed, 184 insertions, 66 deletions
diff --git a/actionpack/lib/action_dispatch/middleware/public_exceptions.rb b/actionpack/lib/action_dispatch/middleware/public_exceptions.rb
index cbb2d475b1..6c8944e067 100644
--- a/actionpack/lib/action_dispatch/middleware/public_exceptions.rb
+++ b/actionpack/lib/action_dispatch/middleware/public_exceptions.rb
@@ -32,9 +32,8 @@ module ActionDispatch
end
def render_html(status)
- found = false
- path = "#{public_path}/#{status}.#{I18n.locale}.html" if I18n.locale
- path = "#{public_path}/#{status}.html" unless path && (found = File.exist?(path))
+ path = "#{public_path}/#{status}.#{I18n.locale}.html"
+ path = "#{public_path}/#{status}.html" unless (found = File.exist?(path))
if found || File.exist?(path)
render_format(status, 'text/html', File.read(path))
diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md
index 3c44660b3a..a37f1ad540 100644
--- a/activerecord/CHANGELOG.md
+++ b/activerecord/CHANGELOG.md
@@ -1,3 +1,9 @@
+* Fixed polymorphic eager loading when using a String as foreign key.
+
+ Fixes #14734.
+
+ *Lauro Caetano*
+
* Changed scoped blocks to be executed with `instance_eval`
Named scopes (i.e. using STI) were previously cached according to
diff --git a/activerecord/lib/active_record/associations/preloader/association.rb b/activerecord/lib/active_record/associations/preloader/association.rb
index bf461070e0..63773bd5e1 100644
--- a/activerecord/lib/active_record/associations/preloader/association.rb
+++ b/activerecord/lib/active_record/associations/preloader/association.rb
@@ -57,9 +57,15 @@ module ActiveRecord
end
def owners_by_key
- @owners_by_key ||= owners.group_by do |owner|
- owner[owner_key_name]
- end
+ @owners_by_key ||= if key_conversion_required?
+ owners.group_by do |owner|
+ owner[owner_key_name].to_s
+ end
+ else
+ owners.group_by do |owner|
+ owner[owner_key_name]
+ end
+ end
end
def options
@@ -93,13 +99,28 @@ module ActiveRecord
records_by_owner
end
+ def key_conversion_required?
+ association_key_type != owner_key_type
+ end
+
+ def association_key_type
+ @klass.column_types[association_key_name.to_s].type
+ end
+
+ def owner_key_type
+ @model.column_types[owner_key_name.to_s].type
+ end
+
def load_slices(slices)
@preloaded_records = slices.flat_map { |slice|
records_for(slice)
}
@preloaded_records.map { |record|
- [record, record[association_key_name]]
+ key = record[association_key_name]
+ key = key.to_s if key_conversion_required?
+
+ [record, key]
}
end
diff --git a/activerecord/lib/active_record/connection_adapters/column.rb b/activerecord/lib/active_record/connection_adapters/column.rb
index a23d2bd4ef..a718756b93 100644
--- a/activerecord/lib/active_record/connection_adapters/column.rb
+++ b/activerecord/lib/active_record/connection_adapters/column.rb
@@ -69,7 +69,7 @@ module ActiveRecord
end
private
- delegate :extract_scale, to: Type
+ delegate :extract_scale, to: :cast_type
def extract_limit(sql_type)
$1.to_i if sql_type =~ /\((.*)\)/
diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/column.rb b/activerecord/lib/active_record/connection_adapters/postgresql/column.rb
index 151ebd9adb..95f52312a5 100644
--- a/activerecord/lib/active_record/connection_adapters/postgresql/column.rb
+++ b/activerecord/lib/active_record/connection_adapters/postgresql/column.rb
@@ -123,12 +123,6 @@ module ActiveRecord
end
end
- # Extracts the scale from PostgreSQL-specific data types.
- def extract_scale(sql_type)
- # Money type has a fixed scale of 2.
- sql_type =~ /^money/ ? 2 : super
- end
-
# Extracts the precision from PostgreSQL-specific data types.
def extract_precision(sql_type)
if sql_type == 'money'
diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/oid.rb b/activerecord/lib/active_record/connection_adapters/postgresql/oid.rb
index a951fa1522..1d0384c3df 100644
--- a/activerecord/lib/active_record/connection_adapters/postgresql/oid.rb
+++ b/activerecord/lib/active_record/connection_adapters/postgresql/oid.rb
@@ -39,6 +39,10 @@ module ActiveRecord
class Money < Type::Decimal
include Infinity
+ def extract_scale(sql_type)
+ 2
+ end
+
def cast_value(value)
return value unless ::String === value
diff --git a/activerecord/lib/active_record/connection_adapters/type/value.rb b/activerecord/lib/active_record/connection_adapters/type/value.rb
index 577e464553..289c27f6d4 100644
--- a/activerecord/lib/active_record/connection_adapters/type/value.rb
+++ b/activerecord/lib/active_record/connection_adapters/type/value.rb
@@ -4,6 +4,10 @@ module ActiveRecord
class Value # :nodoc:
def type; end
+ def extract_scale(sql_type)
+ Type.extract_scale(sql_type)
+ end
+
def type_cast(value)
cast_value(value) unless value.nil?
end
diff --git a/activerecord/test/cases/adapters/postgresql/datatype_test.rb b/activerecord/test/cases/adapters/postgresql/datatype_test.rb
index ea433d391f..826d322007 100644
--- a/activerecord/test/cases/adapters/postgresql/datatype_test.rb
+++ b/activerecord/test/cases/adapters/postgresql/datatype_test.rb
@@ -7,9 +7,6 @@ end
class PostgresqlTsvector < ActiveRecord::Base
end
-class PostgresqlMoney < ActiveRecord::Base
-end
-
class PostgresqlNumber < ActiveRecord::Base
end
@@ -36,17 +33,11 @@ class PostgresqlDataTypeTest < ActiveRecord::TestCase
def setup
@connection = ActiveRecord::Base.connection
- @connection.execute("set lc_monetary = 'C'")
@connection.execute("INSERT INTO postgresql_tsvectors (id, text_vector) VALUES (1, ' ''text'' ''vector'' ')")
@first_tsvector = PostgresqlTsvector.find(1)
- @connection.execute("INSERT INTO postgresql_moneys (id, wealth) VALUES (1, '567.89'::money)")
- @connection.execute("INSERT INTO postgresql_moneys (id, wealth) VALUES (2, '-567.89'::money)")
- @first_money = PostgresqlMoney.find(1)
- @second_money = PostgresqlMoney.find(2)
-
@connection.execute("INSERT INTO postgresql_numbers (id, single, double) VALUES (1, 123.456, 123456.789)")
@connection.execute("INSERT INTO postgresql_numbers (id, single, double) VALUES (2, '-Infinity', 'Infinity')")
@connection.execute("INSERT INTO postgresql_numbers (id, single, double) VALUES (3, 123.456, 'NaN')")
@@ -70,7 +61,7 @@ class PostgresqlDataTypeTest < ActiveRecord::TestCase
end
teardown do
- [PostgresqlTsvector, PostgresqlMoney, PostgresqlNumber, PostgresqlTime, PostgresqlNetworkAddress,
+ [PostgresqlTsvector, PostgresqlNumber, PostgresqlTime, PostgresqlNetworkAddress,
PostgresqlBitString, PostgresqlOid, PostgresqlTimestampWithZone].each(&:delete_all)
end
@@ -78,10 +69,6 @@ class PostgresqlDataTypeTest < ActiveRecord::TestCase
assert_equal :tsvector, @first_tsvector.column_for_attribute(:text_vector).type
end
- def test_data_type_of_money_types
- assert_equal :decimal, @first_money.column_for_attribute(:wealth).type
- end
-
def test_data_type_of_number_types
assert_equal :float, @first_number.column_for_attribute(:single).type
assert_equal :float, @first_number.column_for_attribute(:double).type
@@ -111,19 +98,6 @@ class PostgresqlDataTypeTest < ActiveRecord::TestCase
assert_equal "'text' 'vector'", @first_tsvector.text_vector
end
- def test_money_values
- assert_equal 567.89, @first_money.wealth
- assert_equal(-567.89, @second_money.wealth)
- end
-
- def test_money_type_cast
- column = PostgresqlMoney.columns_hash['wealth']
- assert_equal(12345678.12, column.type_cast("$12,345,678.12"))
- assert_equal(12345678.12, column.type_cast("$12.345.678,12"))
- assert_equal(-1.15, column.type_cast("-$1.15"))
- assert_equal(-2.25, column.type_cast("($2.25)"))
- end
-
def test_update_tsvector
new_text_vector = "'new' 'text' 'vector'"
@first_tsvector.text_vector = new_text_vector
@@ -166,14 +140,6 @@ class PostgresqlDataTypeTest < ActiveRecord::TestCase
assert_equal 1234, @first_oid.obj_id
end
- def test_update_money
- new_value = BigDecimal.new('123.45')
- @first_money.wealth = new_value
- assert @first_money.save
- assert @first_money.reload
- assert_equal new_value, @first_money.wealth
- end
-
def test_update_number
new_single = 789.012
new_double = 789012.345
diff --git a/activerecord/test/cases/adapters/postgresql/money_test.rb b/activerecord/test/cases/adapters/postgresql/money_test.rb
new file mode 100644
index 0000000000..b9770e954c
--- /dev/null
+++ b/activerecord/test/cases/adapters/postgresql/money_test.rb
@@ -0,0 +1,54 @@
+# encoding: utf-8
+
+require "cases/helper"
+require 'active_record/base'
+require 'active_record/connection_adapters/postgresql_adapter'
+
+class PostgresqlByteaTest < ActiveRecord::TestCase
+ class PostgresqlMoney < ActiveRecord::Base; end
+
+ setup do
+ @connection = ActiveRecord::Base.connection
+ @connection.execute("set lc_monetary = 'C'")
+ end
+
+ def test_column
+ column = PostgresqlMoney.columns_hash["wealth"]
+ assert_equal :decimal, column.type
+ assert_equal "money", column.sql_type
+ assert_equal 2, column.scale
+ assert column.number?
+ assert_not column.text?
+ assert_not column.binary?
+ assert_not column.array
+ end
+
+ def test_money_values
+ @connection.execute("INSERT INTO postgresql_moneys (id, wealth) VALUES (1, '567.89'::money)")
+ @connection.execute("INSERT INTO postgresql_moneys (id, wealth) VALUES (2, '-567.89'::money)")
+
+ first_money = PostgresqlMoney.find(1)
+ second_money = PostgresqlMoney.find(2)
+ assert_equal 567.89, first_money.wealth
+ assert_equal(-567.89, second_money.wealth)
+ end
+
+ def test_money_type_cast
+ column = PostgresqlMoney.columns_hash['wealth']
+ assert_equal(12345678.12, column.type_cast("$12,345,678.12"))
+ assert_equal(12345678.12, column.type_cast("$12.345.678,12"))
+ assert_equal(-1.15, column.type_cast("-$1.15"))
+ assert_equal(-2.25, column.type_cast("($2.25)"))
+ end
+
+ def test_create_and_update_money
+ money = PostgresqlMoney.create(wealth: "987.65")
+ assert_equal 987.65, money.wealth
+
+ new_value = BigDecimal.new('123.45')
+ money.wealth = new_value
+ money.save!
+ money.reload
+ assert_equal new_value, money.wealth
+ end
+end
diff --git a/activerecord/test/cases/associations/belongs_to_associations_test.rb b/activerecord/test/cases/associations/belongs_to_associations_test.rb
index dc7314b450..9c92dc1141 100644
--- a/activerecord/test/cases/associations/belongs_to_associations_test.rb
+++ b/activerecord/test/cases/associations/belongs_to_associations_test.rb
@@ -570,6 +570,19 @@ class BelongsToAssociationsTest < ActiveRecord::TestCase
assert companies(:first_client).readonly_firm.readonly?
end
+ def test_test_polymorphic_assignment_foreign_key_type_string
+ comment = Comment.first
+ comment.author = Author.first
+ comment.resource = Member.first
+ comment.save
+
+ assert_equal Comment.all.to_a,
+ Comment.includes(:author).to_a
+
+ assert_equal Comment.all.to_a,
+ Comment.includes(:resource).to_a
+ end
+
def test_polymorphic_assignment_foreign_type_field_updating
# should update when assigning a saved record
sponsor = Sponsor.new
diff --git a/activerecord/test/models/comment.rb b/activerecord/test/models/comment.rb
index ea261ac9ec..d5a1231060 100644
--- a/activerecord/test/models/comment.rb
+++ b/activerecord/test/models/comment.rb
@@ -7,6 +7,9 @@ class Comment < ActiveRecord::Base
scope :created, -> { all }
belongs_to :post, :counter_cache => true
+ belongs_to :author, polymorphic: true
+ belongs_to :resource, polymorphic: true
+
has_many :ratings
belongs_to :first_post, :foreign_key => :post_id
@@ -39,7 +42,7 @@ class SubSpecialComment < SpecialComment
end
class VerySpecialComment < Comment
- scope :special_parent, -> (special_rating) { where parent_id: special_rating.special_comment.id }
+ scope :special_parent, ->(special_rating) { where parent_id: special_rating.special_comment.id }
end
class CommentThatAutomaticallyAltersPostBody < Comment
diff --git a/activerecord/test/schema/schema.rb b/activerecord/test/schema/schema.rb
index 9e511af3bd..67ba358843 100644
--- a/activerecord/test/schema/schema.rb
+++ b/activerecord/test/schema/schema.rb
@@ -187,6 +187,9 @@ ActiveRecord::Schema.define do
t.integer :taggings_count, default: 0
t.integer :children_count, default: 0
t.integer :parent_id
+ t.references :author, polymorphic: true
+ t.string :resource_id
+ t.string :resource_type
end
create_table :companies, force: true do |t|
diff --git a/activesupport/CHANGELOG.md b/activesupport/CHANGELOG.md
index 237d1d71ae..2a992f60bb 100644
--- a/activesupport/CHANGELOG.md
+++ b/activesupport/CHANGELOG.md
@@ -1,3 +1,10 @@
+* `Hash#deep_transform_keys` and `Hash#deep_transform_keys!` now transform hashes
+ in nested arrays. This change also applies to `Hash#deep_stringify_keys`,
+ `Hash#deep_stringify_keys!`, `Hash#deep_symbolize_keys` and
+ `Hash#deep_symbolize_keys!`.
+
+ *OZAWA Sakuro*
+
* Fixed confusing `DelegationError` in `Module#delegate`.
See #15186.
diff --git a/activesupport/lib/active_support/core_ext/hash/keys.rb b/activesupport/lib/active_support/core_ext/hash/keys.rb
index 3d41aa8572..28536e32a4 100644
--- a/activesupport/lib/active_support/core_ext/hash/keys.rb
+++ b/activesupport/lib/active_support/core_ext/hash/keys.rb
@@ -75,34 +75,26 @@ class Hash
# Returns a new hash with all keys converted by the block operation.
# This includes the keys from the root hash and from all
- # nested hashes.
+ # nested hashes and arrays.
#
# hash = { person: { name: 'Rob', age: '28' } }
#
# hash.deep_transform_keys{ |key| key.to_s.upcase }
# # => {"PERSON"=>{"NAME"=>"Rob", "AGE"=>"28"}}
def deep_transform_keys(&block)
- result = {}
- each do |key, value|
- result[yield(key)] = value.is_a?(Hash) ? value.deep_transform_keys(&block) : value
- end
- result
+ _deep_transform_keys_in_object(self, &block)
end
# Destructively convert all keys by using the block operation.
# This includes the keys from the root hash and from all
- # nested hashes.
+ # nested hashes and arrays.
def deep_transform_keys!(&block)
- keys.each do |key|
- value = delete(key)
- self[yield(key)] = value.is_a?(Hash) ? value.deep_transform_keys!(&block) : value
- end
- self
+ _deep_transform_keys_in_object!(self, &block)
end
# Returns a new hash with all keys converted to strings.
# This includes the keys from the root hash and from all
- # nested hashes.
+ # nested hashes and arrays.
#
# hash = { person: { name: 'Rob', age: '28' } }
#
@@ -114,14 +106,14 @@ class Hash
# Destructively convert all keys to strings.
# This includes the keys from the root hash and from all
- # nested hashes.
+ # nested hashes and arrays.
def deep_stringify_keys!
deep_transform_keys!{ |key| key.to_s }
end
# Returns a new hash with all keys converted to symbols, as long as
# they respond to +to_sym+. This includes the keys from the root hash
- # and from all nested hashes.
+ # and from all nested hashes and arrays.
#
# hash = { 'person' => { 'name' => 'Rob', 'age' => '28' } }
#
@@ -133,8 +125,38 @@ class Hash
# Destructively convert all keys to symbols, as long as they respond
# to +to_sym+. This includes the keys from the root hash and from all
- # nested hashes.
+ # nested hashes and arrays.
def deep_symbolize_keys!
deep_transform_keys!{ |key| key.to_sym rescue key }
end
+
+ private
+ # support methods for deep transforming nested hashes and arrays
+ def _deep_transform_keys_in_object(object, &block)
+ case object
+ when Hash
+ object.each_with_object({}) do |(key, value), result|
+ result[yield(key)] = _deep_transform_keys_in_object(value, &block)
+ end
+ when Array
+ object.map {|e| _deep_transform_keys_in_object(e, &block) }
+ else
+ object
+ end
+ end
+
+ def _deep_transform_keys_in_object!(object, &block)
+ case object
+ when Hash
+ object.keys.each do |key|
+ value = object.delete(key)
+ object[yield(key)] = _deep_transform_keys_in_object!(value, &block)
+ end
+ object
+ when Array
+ object.map! {|e| _deep_transform_keys_in_object!(e, &block)}
+ else
+ object
+ end
+ end
end
diff --git a/activesupport/test/core_ext/hash_ext_test.rb b/activesupport/test/core_ext/hash_ext_test.rb
index ad354a4c30..cb706d77c2 100644
--- a/activesupport/test/core_ext/hash_ext_test.rb
+++ b/activesupport/test/core_ext/hash_ext_test.rb
@@ -46,6 +46,10 @@ class HashExtTest < ActiveSupport::TestCase
@nested_illegal_symbols = { [] => { [] => 3} }
@upcase_strings = { 'A' => 1, 'B' => 2 }
@nested_upcase_strings = { 'A' => { 'B' => { 'C' => 3 } } }
+ @string_array_of_hashes = { 'a' => [ { 'b' => 2 }, { 'c' => 3 }, 4 ] }
+ @symbol_array_of_hashes = { :a => [ { :b => 2 }, { :c => 3 }, 4 ] }
+ @mixed_array_of_hashes = { :a => [ { :b => 2 }, { 'c' => 3 }, 4 ] }
+ @upcase_array_of_hashes = { 'A' => [ { 'B' => 2 }, { 'C' => 3 }, 4 ] }
end
def test_methods
@@ -84,6 +88,9 @@ class HashExtTest < ActiveSupport::TestCase
assert_equal @nested_upcase_strings, @nested_symbols.deep_transform_keys{ |key| key.to_s.upcase }
assert_equal @nested_upcase_strings, @nested_strings.deep_transform_keys{ |key| key.to_s.upcase }
assert_equal @nested_upcase_strings, @nested_mixed.deep_transform_keys{ |key| key.to_s.upcase }
+ assert_equal @upcase_array_of_hashes, @string_array_of_hashes.deep_transform_keys{ |key| key.to_s.upcase }
+ assert_equal @upcase_array_of_hashes, @symbol_array_of_hashes.deep_transform_keys{ |key| key.to_s.upcase }
+ assert_equal @upcase_array_of_hashes, @mixed_array_of_hashes.deep_transform_keys{ |key| key.to_s.upcase }
end
def test_deep_transform_keys_not_mutates
@@ -109,6 +116,9 @@ class HashExtTest < ActiveSupport::TestCase
assert_equal @nested_upcase_strings, @nested_symbols.deep_dup.deep_transform_keys!{ |key| key.to_s.upcase }
assert_equal @nested_upcase_strings, @nested_strings.deep_dup.deep_transform_keys!{ |key| key.to_s.upcase }
assert_equal @nested_upcase_strings, @nested_mixed.deep_dup.deep_transform_keys!{ |key| key.to_s.upcase }
+ assert_equal @upcase_array_of_hashes, @string_array_of_hashes.deep_dup.deep_transform_keys!{ |key| key.to_s.upcase }
+ assert_equal @upcase_array_of_hashes, @symbol_array_of_hashes.deep_dup.deep_transform_keys!{ |key| key.to_s.upcase }
+ assert_equal @upcase_array_of_hashes, @mixed_array_of_hashes.deep_dup.deep_transform_keys!{ |key| key.to_s.upcase }
end
def test_deep_transform_keys_with_bang_mutates
@@ -134,6 +144,9 @@ class HashExtTest < ActiveSupport::TestCase
assert_equal @nested_symbols, @nested_symbols.deep_symbolize_keys
assert_equal @nested_symbols, @nested_strings.deep_symbolize_keys
assert_equal @nested_symbols, @nested_mixed.deep_symbolize_keys
+ assert_equal @symbol_array_of_hashes, @string_array_of_hashes.deep_symbolize_keys
+ assert_equal @symbol_array_of_hashes, @symbol_array_of_hashes.deep_symbolize_keys
+ assert_equal @symbol_array_of_hashes, @mixed_array_of_hashes.deep_symbolize_keys
end
def test_deep_symbolize_keys_not_mutates
@@ -159,6 +172,9 @@ class HashExtTest < ActiveSupport::TestCase
assert_equal @nested_symbols, @nested_symbols.deep_dup.deep_symbolize_keys!
assert_equal @nested_symbols, @nested_strings.deep_dup.deep_symbolize_keys!
assert_equal @nested_symbols, @nested_mixed.deep_dup.deep_symbolize_keys!
+ assert_equal @symbol_array_of_hashes, @string_array_of_hashes.deep_dup.deep_symbolize_keys!
+ assert_equal @symbol_array_of_hashes, @symbol_array_of_hashes.deep_dup.deep_symbolize_keys!
+ assert_equal @symbol_array_of_hashes, @mixed_array_of_hashes.deep_dup.deep_symbolize_keys!
end
def test_deep_symbolize_keys_with_bang_mutates
@@ -204,6 +220,9 @@ class HashExtTest < ActiveSupport::TestCase
assert_equal @nested_strings, @nested_symbols.deep_stringify_keys
assert_equal @nested_strings, @nested_strings.deep_stringify_keys
assert_equal @nested_strings, @nested_mixed.deep_stringify_keys
+ assert_equal @string_array_of_hashes, @string_array_of_hashes.deep_stringify_keys
+ assert_equal @string_array_of_hashes, @symbol_array_of_hashes.deep_stringify_keys
+ assert_equal @string_array_of_hashes, @mixed_array_of_hashes.deep_stringify_keys
end
def test_deep_stringify_keys_not_mutates
@@ -229,6 +248,9 @@ class HashExtTest < ActiveSupport::TestCase
assert_equal @nested_strings, @nested_symbols.deep_dup.deep_stringify_keys!
assert_equal @nested_strings, @nested_strings.deep_dup.deep_stringify_keys!
assert_equal @nested_strings, @nested_mixed.deep_dup.deep_stringify_keys!
+ assert_equal @string_array_of_hashes, @string_array_of_hashes.deep_dup.deep_stringify_keys!
+ assert_equal @string_array_of_hashes, @symbol_array_of_hashes.deep_dup.deep_stringify_keys!
+ assert_equal @string_array_of_hashes, @mixed_array_of_hashes.deep_dup.deep_stringify_keys!
end
def test_deep_stringify_keys_with_bang_mutates