Add test for method `#attributes`

ActiveRecord::AttributeMethods#attributes

Extracted from https://github.com/rails/rails/pull/28159

1 files changed, 11 insertions, 0 deletions

diff --git a/activerecord/test/cases/base_test.rb b/activerecord/test/cases/base_test.rb
index 979a59f566..8efbc41da9 100644
--- a/activerecord/test/cases/base_test.rb
+++ b/activerecord/test/cases/base_test.rb
@@ -703,6 +703,17 @@ class BasicsTest < ActiveRecord::TestCase
     assert_nil topic.bonus_time
   end
 
+  def test_attributes
+    category = Category.new(name: "Ruby")
+
+    expected_attributes = category.attribute_names.map do |attribute_name|
+      [attribute_name, category.public_send(attribute_name)]
+    end.to_h
+
+    assert_instance_of Hash, category.attributes
+    assert_equal expected_attributes, category.attributes
+  end
+
   def test_boolean
     b_nil = Boolean.create("value" => nil)
     nil_id = b_nil.id