DRY `activerecord/lib/active_record/core.rb` and fix tests

- Move
  ```
  filter_attributes = self.filter_attributes.map(&:to_s).to_set

  filter_attributes.include?(attribute_name) && !read_attribute(attribute_name).nil?
  ```
  to private method.

- Fix tests in `activerecord/test/cases/filter_attributes_test.rb`
  - Ensure that `teardown` sets `ActiveRecord::Base.filter_attributes` to
    previous state.

  - Ensure that `Admin::Account.filter_attributes` is set to previous
    state in the "filter_attributes could be overwritten by models" test.

Follow up #33756

1 files changed, 9 insertions, 6 deletions

diff --git a/activerecord/lib/active_record/core.rb b/activerecord/lib/active_record/core.rb
index 4f10cddc87..d5d2c70a8a 100644
--- a/activerecord/lib/active_record/core.rb
+++ b/activerecord/lib/active_record/core.rb
@@ -493,13 +493,12 @@ module ActiveRecord
 
     # Returns the contents of the record as a nicely formatted string.
     def inspect
-      filter_attributes = self.filter_attributes.map(&:to_s).to_set
       # We check defined?(@attributes) not to issue warnings if the object is
       # allocated but not initialized.
       inspection = if defined?(@attributes) && @attributes
         self.class.attribute_names.collect do |name|
           if has_attribute?(name)
-            if filter_attributes.include?(name) && !read_attribute(name).nil?
+            if filter_attribute?(name)
               "#{name}: #{ActiveRecord::Core::FILTERED}"
             else
               "#{name}: #{attribute_for_inspect(name)}"
@@ -517,21 +516,19 @@ module ActiveRecord
     # when pp is required.
     def pretty_print(pp)
       return super if custom_inspect_method_defined?
-      filter_attributes = self.filter_attributes.map(&:to_s).to_set
       pp.object_address_group(self) do
         if defined?(@attributes) && @attributes
           column_names = self.class.column_names.select { |name| has_attribute?(name) || new_record? }
           pp.seplist(column_names, proc { pp.text "," }) do |column_name|
-            column_value = read_attribute(column_name)
             pp.breakable " "
             pp.group(1) do
               pp.text column_name
               pp.text ":"
               pp.breakable
-              if filter_attributes.include?(column_name) && !column_value.nil?
+              if filter_attribute?(column_name)
                 pp.text ActiveRecord::Core::FILTERED
               else
-                pp.pp column_value
+                pp.pp read_attribute(column_name)
               end
             end
           end
@@ -583,5 +580,11 @@ module ActiveRecord
       def custom_inspect_method_defined?
         self.class.instance_method(:inspect).owner != ActiveRecord::Base.instance_method(:inspect).owner
       end
+
+      def filter_attribute?(attribute_name)
+        filter_attributes = self.filter_attributes.map(&:to_s).to_set
+
+        filter_attributes.include?(attribute_name) && !read_attribute(attribute_name).nil?
+      end
   end
 end