From 7635cb53e8a69d3161d371fea7727dc3bc206c7b Mon Sep 17 00:00:00 2001
From: Laurent Sansonetti <lrz@hipbyte.com>
Date: Tue, 3 Feb 2015 19:02:18 +0100
Subject: [PATCH] turns out Bacon.run is called for each spec, let's make sure
 we don't override the main_activity ivar with nil

---
 lib/motion/spec.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/motion/spec.rb b/lib/motion/spec.rb
index e230f247..6aba2ec5 100644
--- a/lib/motion/spec.rb
+++ b/lib/motion/spec.rb
@@ -511,7 +511,7 @@ module Bacon
     if defined?(NSObject)
       current_context.performSelector("run", withObject:nil, afterDelay:0)
     else
-      @main_activity = arg
+      @main_activity ||= arg
       current_context.run
     end
   end