From c1dc06b6c35267ff532d2fc79c0f7faaf81f4666 Mon Sep 17 00:00:00 2001
From: Dmitry Krasnoukhov <dmitry@krasnoukhov.com>
Date: Mon, 21 Sep 2020 20:27:44 +0300
Subject: [PATCH] fix: Workaround for domTransformation error caused by empty
 document (#234)

---
 addon-test-support/@percy/ember/index.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/addon-test-support/@percy/ember/index.js b/addon-test-support/@percy/ember/index.js
index 574b9d58..2e3f8663 100644
--- a/addon-test-support/@percy/ember/index.js
+++ b/addon-test-support/@percy/ember/index.js
@@ -105,6 +105,10 @@ export default async function percySnapshot(name, options = {}) {
     handleAgentCommunication: false,
     // We only want to capture the ember application, not the testing UI
     domTransformation: function(clonedDom) {
+      if (!clonedDom.querySelector(scopedSelector)) {
+        return clonedDom;
+      }
+
       if (options.domTransformation) {
         options.domTransformation(clonedDom);
       }