From 7f4c540fa06f0ebfd9395fe33d9dfa561b85798c Mon Sep 17 00:00:00 2001
From: Thorsten Eckel <te@znuny.com>
Date: Sun, 3 Jun 2018 17:10:22 +0200
Subject: [PATCH] Retry on stale element reference to avoid race conditions
 while interface is not ready yet.

---
 test/browser_test_helper.rb | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/test/browser_test_helper.rb b/test/browser_test_helper.rb
index 8115df073..b53a5e477 100644
--- a/test/browser_test_helper.rb
+++ b/test/browser_test_helper.rb
@@ -570,6 +570,8 @@ class TestCase < Test::Unit::TestCase
 =end
 
   def exists(params)
+    retries ||= 0
+
     switch_window_focus(params)
     log('exists', params)
 
@@ -589,6 +591,10 @@ class TestCase < Test::Unit::TestCase
     end
 
     true
+  rescue Selenium::WebDriver::Error::StaleElementReferenceError
+    sleep retries
+    retries += 1
+    retry if retries < 3
   end
 
 =begin