test(Modal): check if modal is disposed

js/src/modal.js

@@ -196,9 +196,17 @@ class Modal {
   }
 
   dispose() {
-    $.removeData(this._element, DATA_KEY)
+    [window, this._element, this._dialog]
+      .forEach((htmlElement) => $(htmlElement).off(EVENT_KEY))
 
-    $(window, document, this._element, this._backdrop).off(EVENT_KEY)
+    /**
+     * `document` has 2 events `Event.FOCUSIN` and `Event.CLICK_DATA_API`
+     * Do not move `document` in `htmlElements` array
+     * It will remove `Event.CLICK_DATA_API` event that should remain
+     */
+    $(document).off(Event.FOCUSIN)
+
+    $.removeData(this._element, DATA_KEY)
 
     this._config              = null
     this._element             = null