add placeholder for scan tests

hpsspy/test/test_os.py

@@ -40,5 +40,6 @@ def tearDown(self):
         #         os.environ[e] = self.env[e]
         pass
 
+
 if __name__ == '__main__':
     unittest.main()

hpsspy/test/test_scan.py

@@ -0,0 +1,44 @@
+# Licensed under a 3-clause BSD style license - see LICENSE.rst
+# -*- coding: utf-8 -*-
+"""
+hpsspy.test.test_scan
+~~~~~~~~~~~~~~~~~~~~~
+
+Test the functions in the scan subpackage.
+"""
+#
+from __future__ import (absolute_import, division, print_function,
+                        unicode_literals)
+#
+import unittest
+# import json
+# from pkg_resources import resource_filename
+import os
+from ..scan import main
+
+
+class TestScan(unittest.TestCase):
+    """Test the functions in the scan subpackage.
+    """
+
+    def setUp(self):
+        # Store the original value of env variables, if present.
+        # self.env = {'TMPDIR': None, 'HPSS_DIR': None}
+        # for e in self.env:
+        #     if e in os.environ:
+        #         self.env[e] = os.environ['TMPDIR']
+        pass
+
+    def tearDown(self):
+        # Restore the original value of env variables, if they were present.
+        # for e in self.env:
+        #     if self.env[e] is None:
+        #         if e in os.environ:
+        #             del os.environ[e]
+        #     else:
+        #         os.environ[e] = self.env[e]
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()