self-test path fixes

Author: briantoby

tests/test_elm.py

@@ -1,5 +1,17 @@
+import os
+import sys
+import importlib.util
+if importlib.util.find_spec('GSASII') is None: # hack path if GSASII not installed into Python
+    home = os.path.dirname(__file__)
+    sys.path.append(os.path.dirname(home))
+
 from GSASII import GSASIIElem
 
 def test_get_xsection():
     xsection = GSASIIElem.GetXsectionCoeff('Fe')
     assert len(xsection) > 0
+
+if __name__ == '__main__':
+    # run self-tests
+    test_get_xsection()
+    print ("OK")

tests/test_lattice.py

@@ -5,7 +5,7 @@
 import sys
 import numpy as np
 
-import importlib
+import importlib.util
 if importlib.util.find_spec('GSASII') is None: # hack path if GSASII not installed into Python
     home = os.path.dirname(__file__)
     sys.path.append(os.path.dirname(home))