Fix undefined method `example_group' for nil & NoMethodError: render_views? for feature specs

Author: aCandidMind

lib/rspec/rails/view_rendering.rb

@@ -64,12 +64,16 @@ def self.nullify_template_rendering(templates)
         # @private
         class LogSubscriber < ::ActiveSupport::LogSubscriber
           def current_example_group
-            RSpec.current_example.example_group
+            # When running feature specs current_example can be nil if the subscriber runs in a different context
+            # than the specs themselves. E.g. in a capybara thread.
+            RSpec.current_example.try!(:example_group)
           end
 
           def render_template(_event)
-            return if current_example_group.render_views?
-            info("  Template rendering was prevented by rspec-rails. Use `render_views` to verify rendered view contents if necessary.")
+            example_group = current_example_group
+            if example_group.respond_to?(:render_views?) && !example_group.render_views?
+              info("  Template rendering was prevented by rspec-rails. Use `render_views` to verify rendered view contents if necessary.")
+            end
           end
         end
 

spec/rspec/rails/view_rendering_spec.rb

@@ -183,7 +183,7 @@ def logger
         ActiveSupport::LogSubscriber.logger
       end
 
-      pending 'does not cause an error' do
+      it 'does not cause an error' do
         expect(logger).not_to receive(:error).with(a_string_starting_with('Could not log "render_template.action_view" event.'))
         view.render(body: 'foo')
       end