diff --git a/tests/automated/event-data/EventObject-parsing.js b/tests/automated/event-data/EventObject-parsing.js
index <HASH>..<HASH> 100644
--- a/tests/automated/event-data/EventObject-parsing.js
+++ b/tests/automated/event-data/EventObject-parsing.js
@@ -35,4 +35,19 @@ describe('Event Object parsing', function() {
     expect(events[0].end).toBe(null)
   })
 
+  xit('won\'t accept two events with the same ID', function() {
+    initCalendar({
+      defaultView: 'dayGridDay',
+      defaultDate: '2018-01-01',
+      events: [
+        { id: '1', start: '2018-01-01', title: 'cool' },
+        { id: '1', start: '2018-01-01' }
+      ]
+    })
+
+    let events = currentCalendar.getEvents()
+    expect(events.length).toBe(1)
+    expect(events[0].title).toBe('cool')
+  })
+
 })
disabled test for dup event ids