Add spec

spec/rspec/rails/example/rails_example_group_spec.rb

@@ -33,38 +33,20 @@ module RSpec::Rails
       expect(results).to all be true
     end
 
-    describe 'CurrentAttributes' do
-      let(:current_class) do 
-        Class.new(ActiveSupport::CurrentAttributes) do
-          attribute :request_id
-        end
+    describe 'CurrentAttributes', order: :defined do
+      class Current < ActiveSupport::CurrentAttributes
+        attribute :request_id
       end
 
-      it 'does not leak current attributes between example groups', if: ::Rails::VERSION::MAJOR >= 7 do
-        groups =
-          [
-            RSpec::Core::ExampleGroup.describe("A group") do
-              include RSpec::Rails::RailsExampleGroup
-              specify { expect(current_class.attributes).to eq({}) }
-            end,
-            RSpec::Core::ExampleGroup.describe("A controller group", type: :controller) do
-              specify do
-                current_class.request_id = "123"
-                expect(current_class.attributes).to eq(request_id: "123")
-              end
-            end,
-            RSpec::Core::ExampleGroup.describe("Another group") do
-              include RSpec::Rails::RailsExampleGroup
-              specify { expect(current_class.attributes).to eq({}) }
-            end
-          ]
-
-        results =
-          groups.map do |group|
-            group.run(failure_reporter) ? true : failure_reporter.exceptions
-          end
-
-        expect(results).to all be true
+      it 'sets a current attribute' do
+        Current.request_id = '123'
+        expect(Current.request_id).to eq('123')
+        expect(Current.attributes).to eq(request_id: '123')
+      end
+
+      it 'does not leak current attributes' do
+        expect(Current.request_id).to eq(nil)
+        expect(Current.attributes).to eq({})
       end
     end
   end