Rails removed unshift for view_paths, use their copy constructor instead

Author: JonRowe

lib/rspec/rails/example/view_example_group.rb

@@ -82,14 +82,26 @@ def view
           _view
         end
 
-        # Simulates the presence of a template on the file system by adding a
-        # Rails' FixtureResolver to the front of the view_paths list. Designed to
-        # help isolate view examples from partials rendered by the view template
-        # that is the subject of the example.
-        #
-        #     stub_template("widgets/_widget.html.erb" => "This content.")
-        def stub_template(hash)
-          view.view_paths.unshift(StubResolverCache.resolver_for(hash))
+        if ::Rails.version.to_f >= 7.1
+          # Simulates the presence of a template on the file system by adding a
+          # Rails' FixtureResolver to the front of the view_paths list. Designed to
+          # help isolate view examples from partials rendered by the view template
+          # that is the subject of the example.
+          #
+          #     stub_template("widgets/_widget.html.erb" => "This content.")
+          def stub_template(hash)
+            view.view_paths.send(:initialize_copy, ActionView::PathSet.new([StubResolverCache.resolver_for(hash)] + view.view_paths.paths))
+          end
+        else
+          # Simulates the presence of a template on the file system by adding a
+          # Rails' FixtureResolver to the front of the view_paths list. Designed to
+          # help isolate view examples from partials rendered by the view template
+          # that is the subject of the example.
+          #
+          #     stub_template("widgets/_widget.html.erb" => "This content.")
+          def stub_template(hash)
+            view.view_paths.unshift(StubResolverCache.resolver_for(hash))
+          end
         end
 
         # Provides access to the params hash that will be available within the

spec/rspec/rails/example/view_example_group_spec.rb

@@ -283,7 +283,7 @@ def _view; end
         Class.new do
           include ViewExampleGroup::ExampleMethods
           def _view
-            @_view ||= Struct.new(:view_paths).new(['some-path'])
+            @_view ||= Struct.new(:view_paths).new(ActionView::PathSet.new(['some-path']))
           end
         end
       end