TST: Test for original issue (pd.crosstab)

Author: toobaz

pandas/tests/reshape/test_pivot.py

@@ -1631,3 +1631,15 @@ def test_crosstab_dup_index_names(self):
                                 index=expected_index,
                                 columns=expected_index)
         tm.assert_frame_equal(result, expected)
+
+    @pytest.mark.parametrize("names", [['a', ('b', 'c')],
+                                       [('a', 'b'), 'c']])
+    def test_crosstab_tuple_name(self, names):
+        s1 = pd.Series(range(3), name=names[0])
+        s2 = pd.Series(range(1, 4), name=names[1])
+
+        mi = pd.MultiIndex.from_arrays([range(3), range(1, 4)], names=names)
+        expected = pd.Series(1, index=mi).unstack(1, fill_value=0)
+
+        result = pd.crosstab(s1, s2)
+        tm.assert_frame_equal(result, expected)