Add tests for to_datetime with invalid day day of month. issue #10154 Not all tests pass there are other issues.

Author: vincentdavis

pandas/tseries/tests/test_timeseries.py

@@ -11,7 +11,7 @@
 
 from pandas import (Index, Series, TimeSeries, DataFrame,
                     isnull, date_range, Timestamp, Period, DatetimeIndex,
-                    Int64Index, to_datetime, bdate_range, Float64Index, TimedeltaIndex)
+                    Int64Index, to_datetime, bdate_range, Float64Index, TimedeltaIndex, NaT)
 
 import pandas.core.datetools as datetools
 import pandas.tseries.offsets as offsets
@@ -4461,6 +4461,23 @@ def test_second(self):
         self.assertIsInstance(r2, Float64Index)
         tm.assert_index_equal(r1, r2)
 
+class TestDaysInMonth(tm.TestCase):
+    def test_day_not_in_month_coerce_true_NaT(self):
+        self.assertTrue(isnull(to_datetime('2015-02-29', coerce=True)))
+        self.assertTrue(isnull(to_datetime('2015-02-29', format="%Y-%m-%d", coerce=True)))
+        self.assertTrue(isnull(to_datetime('2015-02-32', format="%Y-%m-%d", coerce=True)))
+        self.assertTrue(isnull(to_datetime('2015-04-31', format="%Y-%m-%d", coerce=True)))
+    def test_day_not_in_month_coerce_false_raise(self):
+        self.assertRaises(ValueError, to_datetime, '2015-02-29', errors='raise', coerce=False)
+        self.assertRaises(ValueError, to_datetime, '2015-02-29', errors='raise', format="%Y-%m-%d", coerce=False)
+        self.assertRaises(ValueError, to_datetime, '2015-02-32', errors='raise', format="%Y-%m-%d", coerce=False)
+        self.assertRaises(ValueError, to_datetime, '2015-04-31', errors='raise', format="%Y-%m-%d", coerce=False)
+    def test_day_not_in_month_coerce_false_ignore(self):
+        self.assertRaises(ValueError, to_datetime, '2015-02-29', errors='ignore', coerce=False)
+        self.assertRaises(ValueError, to_datetime, '2015-02-29', errors='ignore', format="%Y-%m-%d", coerce=False)
+        self.assertRaises(ValueError, to_datetime, '2015-02-32', errors='ignore', format="%Y-%m-%d", coerce=False)
+        self.assertRaises(ValueError, to_datetime, '2015-04-31', errors='ignore', format="%Y-%m-%d", coerce=False)
+
 if __name__ == '__main__':
     nose.runmodule(argv=[__file__, '-vvs', '-x', '--pdb', '--pdb-failure'],
                    exit=False)