Add failed test

Author: jbuyl

pandas/io/tests/test_stata.py

@@ -780,8 +780,14 @@ def test_drop_column(self):
         expected = expected[columns]
         dropped = read_stata(self.dta15_117, convert_dates=True,
                              columns=columns)
-
         tm.assert_frame_equal(expected, dropped)
+
+        columns = ['int_', 'long_', 'byte_']
+        expected = expected[columns]
+        reordered = read_stata(self.dta15_117, convert_dates=True,
+                               columns=columns)
+        tm.assert_frame_equal(expected, reordered)
+
         with tm.assertRaises(ValueError):
             columns = ['byte_', 'byte_']
             read_stata(self.dta15_117, convert_dates=True, columns=columns)