From 2a895f578e4e4d1e591683876a4e26630ef008d8 Mon Sep 17 00:00:00 2001
From: Djamil Legato <djamil@djamil.it>
Date: Wed, 20 Apr 2016 15:04:39 -0700
Subject: [PATCH] Better handler for `GPM::isTestingRelease` method

---
 system/src/Grav/Common/GPM/GPM.php | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/system/src/Grav/Common/GPM/GPM.php b/system/src/Grav/Common/GPM/GPM.php
index 6989cb9a9..96c0964c3 100644
--- a/system/src/Grav/Common/GPM/GPM.php
+++ b/system/src/Grav/Common/GPM/GPM.php
@@ -347,7 +347,10 @@ class GPM extends Iterator
      */
     public function isTestingRelease($package_name)
     {
-        return $this->getReleaseType($package_name) === 'testing' || $this->getInstalledPackage($package_name)->testing;
+        $hasTesting = isset($this->getInstalledPackage($package_name)->testing);
+        $testing = $hasTesting ? $this->getInstalledPackage($package_name)->testing : false;
+
+        return $this->getReleaseType($package_name) === 'testing' || $testing;
     }
 
     /**