Fix have_attribute_row selector for labels containing slashes

lib/capybara/active_admin/selectors/attributes_table.rb

@@ -18,7 +18,7 @@ def attributes_table_selector(model: nil, id: nil)
         def attributes_row_selector(label = nil)
           return 'tr.row > td' if label.nil?
 
-          label = label.to_s.gsub(' ', '_').downcase
+          label = label.to_s.gsub(/[\s\/]/, '_').downcase
           "tr.row.row-#{label} > td"
         end
       end

spec/lib/selectors/attributes_table_spec.rb

@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+RSpec.describe Capybara::ActiveAdmin::Selectors::AttributesTable do
+  subject(:helper) do
+    Class.new { include Capybara::ActiveAdmin::Selectors::AttributesTable }.new
+  end
+
+  describe '#attributes_row_selector' do
+    it 'returns a generic row selector when no label given' do
+      expect(helper.attributes_row_selector).to eq('tr.row > td')
+    end
+
+    it 'builds selector from a simple label' do
+      expect(helper.attributes_row_selector('Full name')).to eq('tr.row.row-full_name > td')
+    end
+
+    it 'replaces slash with underscore to match ActiveAdmin class generation' do
+      expect(helper.attributes_row_selector('USA/UAH')).to eq('tr.row.row-usa_uah > td')
+    end
+
+    it 'replaces spaces and slashes with underscores' do
+      expect(helper.attributes_row_selector('A/B C')).to eq('tr.row.row-a_b_c > td')
+    end
+  end
+end