Unit Test and whatsnew

Author: david-liu-brattle-1

doc/source/whatsnew/v0.23.1.txt

@@ -0,0 +1,91 @@
+.. _whatsnew_0231:
+
+v0.23.1
+-------
+
+This is a minor bug-fix release in the 0.23.x series and includes some small regression fixes
+and bug fixes. We recommend that all users upgrade to this version.
+
+.. contents:: What's new in v0.23.1
+    :local:
+    :backlinks: none
+
+.. _whatsnew_0231.enhancements:
+
+New features
+~~~~~~~~~~~~
+
+
+.. _whatsnew_0231.deprecations:
+
+Deprecations
+~~~~~~~~~~~~
+
+-
+-
+
+.. _whatsnew_0231.performance:
+
+Performance Improvements
+~~~~~~~~~~~~~~~~~~~~~~~~
+
+- Improved performance of :meth:`CategoricalIndex.is_monotonic_increasing`, :meth:`CategoricalIndex.is_monotonic_decreasing` and :meth:`CategoricalIndex.is_monotonic` (:issue:`21025`)
+-
+-
+
+Documentation Changes
+~~~~~~~~~~~~~~~~~~~~~
+
+-
+-
+
+.. _whatsnew_0231.bug_fixes:
+
+Bug Fixes
+~~~~~~~~~
+
+Groupby/Resample/Rolling
+^^^^^^^^^^^^^^^^^^^^^^^^
+
+- Bug in :func:`DataFrame.agg` where applying multiple aggregation functions to a :class:`DataFrame` with duplicated column names would cause a stack overflow (:issue:`21063`)
+
+Strings
+^^^^^^^
+
+- Bug in :meth:`Series.str.replace()` where the method throws `TypeError` on Python 3.5.2 (:issue: `21078`)
+-
+
+Conversion
+^^^^^^^^^^
+
+-
+-
+
+Indexing
+^^^^^^^^
+
+-
+-
+
+I/O
+^^^
+
+-Bug in :func:`DataFrame.to_clipboard` where data sent to clipboard was not properly tab-delimited even when ``excel=True`` (:issue:`21104`)
+-
+
+Plotting
+^^^^^^^^
+
+-
+-
+
+Reshaping
+^^^^^^^^^
+
+-
+-
+
+Categorical
+^^^^^^^^^^^
+
+-

pandas/tests/io/test_clipboard.py

@@ -12,7 +12,7 @@
 from pandas.util import testing as tm
 from pandas.util.testing import makeCustomDataframe as mkdf
 from pandas.io.clipboard.exceptions import PyperclipException
-from pandas.io.clipboard import clipboard_set
+from pandas.io.clipboard import clipboard_set, clipboard_get
 
 
 try:
@@ -81,6 +81,7 @@ def test_round_trip_frame_sep(self):
             self.check_round_trip_frame(dt, sep=',')
             self.check_round_trip_frame(dt, sep=r'\s+')
             self.check_round_trip_frame(dt, sep='|')
+            self.check_round_trip_frame(dt, sep='\t')
 
     def test_round_trip_frame_string(self):
         for dt in self.data_types:
@@ -123,6 +124,14 @@ def test_read_clipboard_infer_excel(self):
         exp = pd.read_clipboard(**clip_kwargs)
 
         tm.assert_frame_equal(res, exp)
+    def test_excel_clipboard_format(self):
+        for dt in self.data_types:
+            for sep in ['\t',None]:
+                data = self.data[dt]
+                data.to_clipboard(excel=True, sep=sep)
+                result = read_clipboard(sep='\t', index_col=0)
+                tm.assert_frame_equal(data, result, check_dtype=False)
+                assert clipboard_get().count('\t') > 0
 
     def test_invalid_encoding(self):
         # test case for testing invalid encoding