5446 add system test

Author: janeewheatley

spec/system/audit_system_spec.rb

@@ -195,6 +195,45 @@
         expect(page).to have_content("Delete Audit")
         expect(page).to have_content("Finalize Audit")
       end
+
+      it "detects duplicate items and allows merging", js: true do
+        visit subject
+        click_link "New Audit"
+
+        await_select2("#audit_line_items_attributes_0_item_id") do
+          select storage_location.name, from: "Storage location"
+        end
+
+        # Add first entry for the item
+        select item.name, from: "audit_line_items_attributes_0_item_id"
+        fill_in "audit_line_items_attributes_0_quantity", with: "10"
+
+        # Add a new line item row
+        click_button "Add Another Item"
+
+        # Add second entry for the same item
+        select item.name, from: "audit_line_items_attributes_1_item_id"
+        fill_in "audit_line_items_attributes_1_quantity", with: "15"
+
+        # Try to save - should trigger duplicate detection modal
+        click_button "Save Progress"
+
+        # Verify duplicate detection modal appears
+        expect(page).to have_content("Multiple Item Entries Detected")
+        expect(page).to have_content(item.name)
+        expect(page).to have_content("Merged Result: #{item.name} : 25")
+        expect(page).to have_button("Merge Items")
+        expect(page).to have_button("Make Changes")
+
+        # Click merge to proceed
+        click_button "Merge Items"
+
+        # Verify audit was saved successfully with merged quantities
+        expect(page).to have_content("Audit's progress was successfully saved.")
+        expect(Audit.last.line_items.count).to eq(1)
+        expect(Audit.last.line_items.first.quantity).to eq(25)
+        expect(Audit.last.line_items.first.item).to eq(item)
+      end
     end
 
     context "with an existing audit" do