Add tests for skip_display_none config option.

spec/dummy/config/initializers/react_on_rails.rb

@@ -18,4 +18,7 @@
   # Server rendering only (not for render_component helper)
   config.server_renderer_pool_size  = 1   # increase if you're on JRuby
   config.server_renderer_timeout    = 20  # seconds
+
+  # Default is false, enable if your content security policy doesn't include `style-src: 'unsafe-inline'`
+  config.skip_display_none = false
 end

spec/dummy/spec/helpers/react_on_rails_helper_spec.rb

@@ -74,6 +74,21 @@
       it { is_expected.not_to include react_component_div }
       it { is_expected.to include react_definition_div }
     end
+
+    context "with skip_display_none option" do
+      before { ReactOnRails.configuration.skip_display_none = true }
+
+      let(:react_definition_div_skip_display_none) do
+        "<div class=\"js-react-on-rails-component\"
+              data-component-name=\"App\"
+              data-props=\"{&quot;name&quot;:&quot;My Test Name&quot;}\"
+              data-trace=\"false\"
+              data-expect-turbolinks=\"true\"
+              data-dom-id=\"#{id}\"></div>".squish
+      end
+
+      it { is_expected.to include react_definition_div_skip_display_none }
+    end
   end
 
   describe "#server_render_js" do

spec/react_on_rails/configuration_spec.rb

@@ -21,5 +21,18 @@ module ReactOnRails
       expect(ReactOnRails.configuration.server_bundle_js_file).to eq("client/dist/something.js")
       expect(ReactOnRails.configuration.prerender).to eq(true)
     end
+
+    context "skip display: none" do
+      it "will default false" do
+        expect(ReactOnRails.configuration.skip_display_none).to eq(false)
+      end
+
+      it "will be true if set to true" do
+        ReactOnRails.configure do |config|
+          config.skip_display_none = true
+        end
+        expect(ReactOnRails.configuration.skip_display_none).to eq(true)
+      end
+    end
   end
 end