try to fix test

Author: AtsushiSakai

PathPlanning/RRTDubins/__init__.py

@@ -1,9 +1,14 @@
 from unittest import TestCase
-
 import sys
 sys.path.append("./PathPlanning/RRTDubins/")
+sys.path.append("./PathPlanning/DubinsPath/")
+
+try:
+    from PathPlanning.RRTDubins import rrt_dubins as m
+    # from RRTDubins import rrt_dubins as m
+except:
+    raise
 
-from PathPlanning.RRTDubins import rrt_dubins as m
 
 print(__file__)