Merge pull request #5783 from y-p/PR_ensure_clean_fs_unicode

TST: ensure_clean skips test when fs doesn't support unicode (sparc)

Author: y-p

pandas/util/testing.py

@@ -354,6 +354,10 @@ def ensure_clean(filename=None, return_filelike=False):
 
         try:
             fd, filename = tempfile.mkstemp(suffix=filename)
+        except UnicodeEncodeError:
+            raise nose.SkipTest('no unicode file names on this system')
+
+        try:
             yield filename
         finally:
             try: