Deserialize a raw value from the database in `changed_in_place?` for `AbstractJson`

Structured type values sometimes caused representation problems (keys
sort order, spaces, etc). A raw value from the database should be
deserialized (normalized) to prevent the problems.

1 files changed, 11 insertions, 0 deletions

diff --git a/activerecord/test/cases/json_shared_test_cases.rb b/activerecord/test/cases/json_shared_test_cases.rb
index d190b027bf..ef5ca86874 100644
--- a/activerecord/test/cases/json_shared_test_cases.rb
+++ b/activerecord/test/cases/json_shared_test_cases.rb
@@ -160,6 +160,17 @@ module JSONSharedTestCases
     assert_not json.changed?
   end
 
+  def test_changes_in_place_with_ruby_object
+    time = Time.now.utc
+    json = JsonDataType.create!(payload: time)
+
+    json.reload
+    assert_not json.changed?
+
+    json.payload = time
+    assert_not json.changed?
+  end
+
   def test_assigning_string_literal
     json = JsonDataType.create!(payload: "foo")
     assert_equal "foo", json.payload