added test case for unicode round trip

Author: Ajay Saxena

pandas/io/tests/test_clipboard.py

@@ -113,3 +113,12 @@ def test_read_clipboard_infer_excel(self):
         exp = pd.read_clipboard()
 
         tm.assert_frame_equal(res, exp)
+
+    # unicode round trip test for GH 13747    
+    def test_round_trip_frame_unicode(self):
+        sep = ','
+        df = pd.DataFrame({'a':['µasd','Ωœ∑´'], 'b':['øπ∆˚¬','œ∑´®']})
+        df.to_clipboard(excel=None, sep =sep)
+        result = read_clipboard(sep = sep, index_col = 0)
+        tm.assert_frame_equal(df, result, check_dtype=False)
+