Extract cell_selector method in scaffold index view spec generator (#2777)

Move conditional `cell_selector` out of generated view spec

Author: mjankowski

Changelog.md

@@ -5,6 +5,7 @@ Bug Fixes:
 
 * Prevent `have_http_status` matcher raising an error when encountering a raw `Rack::MockResponse`.
   (Christophe Bliard, #2771)
+* Move Rails version conditional from index scaffold generated file to template. (Matt Jankowski, #2777)
 
 ### 6.1.3 / 2024-06-19
 [Full Changelog](https://github.com/rspec/rspec-rails/compare/v6.1.2...v6.1.3)

lib/generators/rspec/scaffold/templates/index_spec.rb

@@ -18,7 +18,7 @@
 
   it "renders a list of <%= ns_table_name %>" do
     render
-    cell_selector = Rails::VERSION::STRING >= '7' ? 'div>p' : 'tr>td'
+    cell_selector = <%= Rails::VERSION::STRING >= '7' ? "'div>p'" : "'tr>td'" %>
 <% for attribute in output_attributes -%>
     assert_select cell_selector, text: Regexp.new(<%= value_for(attribute) %>.to_s), count: 2
 <% end -%>

spec/generators/rspec/scaffold/scaffold_generator_spec.rb

@@ -268,6 +268,12 @@
                              .and(contain(/^RSpec.describe "(.*)\/index", #{type_metatag(:view)}/))
                              .and(contain(/assign\(:posts, /))
                              .and(contain(/it "renders a list of (.*)"/))
+
+          if ::Rails::VERSION::STRING >= '7.0.0'
+            expect(filename).to contain(/'div>p'/)
+          else
+            expect(filename).to contain(/'tr>td'/)
+          end
         end
       end