Datetime picker library issues (WIP)

spec/features/inputs/date_time_picker_spec.rb

@@ -77,5 +77,29 @@ def picker_input
         expect(page).to_not have_css(".xdsoft_today_button", count: 1)
       end
     end
+
+    context "with date time formatted on the backend" do
+      let(:invoice) { Invoice.first_or_create! }
+
+      before do
+        ActiveadminAddons.datetime_picker_input_format = '%m/%d/%Y %I:%M %P'
+
+        register_page(Invoice) do
+          form do |f|
+            f.input :updated_at, as: :date_time_picker
+            f.actions
+          end
+        end
+
+        visit edit_admin_invoice_path(invoice)
+      end
+
+      it "allows frontend library to parse the date time correctly" do
+        picker_input.click
+        year_in_datetime_picker = page.find(".xdsoft_datetimepicker .xdsoft_year").text
+
+        expect(year_in_datetime_picker).to eq(invoice.updated_at.year.to_s)
+      end
+    end
   end
 end