prevent error when path has resolvers appended, but keep null rendering

Author: JonRowe

lib/rspec/rails/view_rendering.rb

@@ -44,6 +44,13 @@ def render_views?
       #
       # @private
       class EmptyTemplateResolver < ::ActionView::FileSystemResolver
+
+        def initialize(path, pattern=nil)
+          unless path.is_a?(::ActionView::Resolver)
+            super
+          end
+        end
+
       private
 
         def find_templates(*args)

spec/rspec/rails/view_rendering_spec.rb

@@ -139,6 +139,13 @@ def example.controller
         expect(controller.view_paths.map(&:to_s)).to match_paths 'app/views', 'app/legacy_views', 'app/others', 'app/more_views'
       end
 
+      it 'supports manipulating view paths with resolvers' do
+        expect {
+          controller.prepend_view_path ActionView::Resolver.new
+          controller.append_view_path ActionView::Resolver.new
+        }.to_not raise_error
+      end
+
       def match_paths(*paths)
         eq paths.map { |path| File.expand_path path }
       end