Bad timing routing issue, failing test

Author: wagenet

packages/ember/tests/routing/substates_test.js

@@ -267,6 +267,38 @@ moduleFor(
       });
     }
 
+    ['@test Bad timing issue ☠️'](assert) {
+      let appDeferred = RSVP.defer();
+
+      this.router.map(function() {
+        this.route('dummy');
+      });
+
+      this.addTemplate('application_loading', `
+        <div id="toplevel-loading">TOPLEVEL LOADING</div>
+      `);
+      this.add('route:application', Route.extend({
+        model() {
+          return appDeferred.promise;
+        }
+      }));
+
+      this.add('route:dummy', Route.extend({
+        redirect() {
+          return RSVP.resolve()
+            .then(() => this.replaceWith('index'));
+        }
+      }));
+
+      let promise = this.visit('/dummy').then(() => {
+        assert.ok(true);
+      });
+
+      appDeferred.resolve();
+
+      return promise;
+    }
+
     ['@test Enter child-loading route with correct query parameters'](assert) {
       assert.expect(9);
       let deferred = RSVP.defer();