Convert Postgres time 24:00 into 00:00

Fix ticket #278.

NEWS

@@ -21,6 +21,7 @@ What's new in psycopg 2.5.5
 
 - Named cursors used as context manager don't swallow the exception on exit
   (:ticket:`#262`).
+- PostgreSQL time 24:00 is converted to Python 00:00 (:ticket:`#278`).
 
 
 What's new in psycopg 2.5.4

psycopg/typecast.c

@@ -164,6 +164,9 @@ typecast_parse_time(const char* s, const char** t, Py_ssize_t* len,
         while (usd++ < 6) *us *= 10;
     }
 
+    /* 24:00:00 -> 00:00:00 (ticket #278) */
+    if (*hh == 24) { *hh = 0; }
+
     return cz;
 }
 

tests/test_dates.py

@@ -319,6 +319,18 @@ class DatetimeTests(ConnectingTestCase, CommonDatetimeTestsMixin):
         from datetime import timedelta
         self._test_type_roundtrip_array(timedelta(seconds=30))
 
+    def test_time_24(self):
+        from datetime import time
+
+        t = self.execute("select '24:00'::time;")
+        self.assertEqual(t, time(0, 0))
+
+        t = self.execute("select '24:00+05'::timetz;")
+        self.assertEqual(t, time(0, 0, tzinfo=FixedOffsetTimezone(300)))
+
+        t = self.execute("select '24:00+05:30'::timetz;")
+        self.assertEqual(t, time(0, 0, tzinfo=FixedOffsetTimezone(330)))
+
 
 # Only run the datetime tests if psycopg was compiled with support.
 if not hasattr(psycopg2.extensions, 'PYDATETIME'):