From 7eebfd0e67c17c383a6276cc1a404adbe28379e2 Mon Sep 17 00:00:00 2001
From: Markus Schirp <mbj@schirp-dso.com>
Date: Sun, 6 Apr 2014 21:42:16 +0000
Subject: [PATCH] Fix example group reporting

---
 lib/mutant/rspec/killer.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/mutant/rspec/killer.rb b/lib/mutant/rspec/killer.rb
index 81bd5400..b43cc3dc 100644
--- a/lib/mutant/rspec/killer.rb
+++ b/lib/mutant/rspec/killer.rb
@@ -20,7 +20,7 @@ module Mutant
       def run
         mutation.insert
 
-        if example_groups.empty?
+        if example_groups.nil? || example_groups.empty?
           $stderr.puts("No rspec example groups found for: #{match_prefixes.join(', ')}")
           return false
         end