check if @_null_object is defined to avoid warning when it is not

lmars · Feb 27, 2012 · 185d47e · 185d47e
1 parent 3bb19cb
commit 185d47e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lib/rspec/mocks/methods.rb b/lib/rspec/mocks/methods.rb
@@ -103,7 +103,7 @@ def as_null_object
 
       # Returns true if this object has received `as_null_object`
       def null_object?
-        @_null_object
+        defined?(@_null_object)
       end
 
       # @private