atests: normalize ${DATADIR} path
-from os.path import abspath, dirname, join
+from os.path import abspath, dirname, join, normpath
import os
import robot
@@ -6,5 +6,5 @@ __all__ = ['ROBOTPATH', 'ROBOT_VERSION', 'DATADIR', 'WINDOWS']
ROBOTPATH = dirname(abspath(robot.__file__))
ROBOT_VERSION = robot.version.get_version()
-DATADIR = join(dirname(abspath(__file__)), '..', 'testdata')
+DATADIR = normpath(join(dirname(abspath(__file__)), '..', 'testdata'))
WINDOWS = os.sep == '\\'
