From 969c5982904614ceb85481a9ed17462d8b4a30ae Mon Sep 17 00:00:00 2001
From: Paul Irish <paul.irish@gmail.com>
Date: Mon, 15 May 2017 23:58:46 -0700
Subject: [PATCH] tests: fix failing a11y tests from 72b06e422869c62

---
 lighthouse-core/audits/accessibility/axe-audit.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lighthouse-core/audits/accessibility/axe-audit.js b/lighthouse-core/audits/accessibility/axe-audit.js
index c6181893e54e..59c19df887f8 100644
--- a/lighthouse-core/audits/accessibility/axe-audit.js
+++ b/lighthouse-core/audits/accessibility/axe-audit.js
@@ -39,7 +39,7 @@ class AxeAudit extends Audit {
     if (rule && rule.nodes) {
       nodeDetails = rule.nodes.map(node => ({
         type: 'node',
-        selector: node.target.join(' '),
+        selector: Array.isArray(node.target) ? node.target.join(' ') : '',
         path: node.path,
         snippet: node.snippet
       }));