Errors raised in `type_cast_for_database` no longer raise on assignment

Fixes #18580.

1 files changed, 17 insertions, 0 deletions

diff --git a/activerecord/test/cases/types_test.rb b/activerecord/test/cases/types_test.rb
index 73e92addfe..d35d34ff2d 100644
--- a/activerecord/test/cases/types_test.rb
+++ b/activerecord/test/cases/types_test.rb
@@ -117,6 +117,23 @@ module ActiveRecord
           assert_equal Encoding::ASCII_8BIT, type_cast.encoding
         end
       end
+
+      def test_attributes_which_are_invalid_for_database_can_still_be_reassigned
+        type_which_cannot_go_to_the_database = Type::Value.new
+        def type_which_cannot_go_to_the_database.type_cast_for_database(*)
+          raise
+        end
+        klass = Class.new(ActiveRecord::Base) do
+          self.table_name = 'posts'
+          attribute :foo, type_which_cannot_go_to_the_database
+        end
+        model = klass.new
+
+        model.foo = "foo"
+        model.foo = "bar"
+
+        assert_equal "bar", model.foo
+      end
     end
   end
 end