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-rw-r--r--activesupport/test/core_ext/hash_ext_test.rb7
1 files changed, 7 insertions, 0 deletions
diff --git a/activesupport/test/core_ext/hash_ext_test.rb b/activesupport/test/core_ext/hash_ext_test.rb
index dfcc6cd12a..39bd0a2dd4 100644
--- a/activesupport/test/core_ext/hash_ext_test.rb
+++ b/activesupport/test/core_ext/hash_ext_test.rb
@@ -503,6 +503,13 @@ class HashExtTest < ActiveSupport::TestCase
assert_equal [1], hash[:a]
end
+ def test_with_indifferent_access_has_no_side_effects_on_existing_hash
+ hash = {content: [{:foo => :bar, 'bar' => 'baz'}]}
+ hash.with_indifferent_access
+
+ assert_equal [:foo, "bar"], hash[:content].first.keys
+ end
+
def test_indifferent_hash_with_array_of_hashes
hash = { "urls" => { "url" => [ { "address" => "1" }, { "address" => "2" } ] }}.with_indifferent_access
assert_equal "1", hash[:urls][:url].first[:address]