From 293fce63a93350db8c6821dd727e465cc92cde73 Mon Sep 17 00:00:00 2001
From: Jonathan Rainville <rainville.jonathan@gmail.com>
Date: Thu, 13 Sep 2018 15:56:36 -0400
Subject: [PATCH] add thens to catch errors

---
 lib/tests/run_tests.js | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/lib/tests/run_tests.js b/lib/tests/run_tests.js
index c13a3b29..c2b5c2c8 100644
--- a/lib/tests/run_tests.js
+++ b/lib/tests/run_tests.js
@@ -137,9 +137,10 @@ module.exports = {
             }
             console.log(`Coverage report created. You can find it here: ${fs.dappPath('coverage/index.html')}\n`);
             const opn = require('opn');
-            opn(fs.dappPath('coverage/index.html'));
-
-            setTimeout(next, 1000); // Slight delay to enable the browser to open. opn's promise calls too fast
+            const _next = () => { next(); };
+            opn(fs.dappPath('coverage/index.html'), {wait: false})
+              .then(() => new Promise(resolve => setTimeout(resolve, 1000)))
+              .then(_next, _next);
           });
       }
     ], (err) => {