[1.2.X] Fixed #14453 -- Changed handling of microseconds part in type…

…cast_timestamp() DB backend helper function to be more correct. Thanks philipn for the report and fix.

Backport of [14664] from trunk

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@14665 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/db/backends/util.py

@@ -81,7 +81,7 @@ def typecast_timestamp(s): # does NOT store time zone information
     else:
         microseconds = '0'
     return datetime.datetime(int(dates[0]), int(dates[1]), int(dates[2]),
-        int(times[0]), int(times[1]), int(seconds), int(float('.'+microseconds) * 1000000))
+        int(times[0]), int(times[1]), int(seconds), int((microseconds + '000000')[:6]))
 
 def typecast_boolean(s):
     if s is None: return None

tests/regressiontests/db_typecasts/tests.py

@@ -35,6 +35,12 @@
         ('2005-08-11 8:50:30.9', datetime.datetime(2005, 8, 11, 8, 50, 30, 900000)),
         ('2005-08-11 8:50:30.312-05', datetime.datetime(2005, 8, 11, 8, 50, 30, 312000)),
         ('2005-08-11 8:50:30.312+02', datetime.datetime(2005, 8, 11, 8, 50, 30, 312000)),
+        # ticket 14453
+        ('2010-10-12 15:29:22.063202', datetime.datetime(2010, 10, 12, 15, 29, 22, 63202)),
+        ('2010-10-12 15:29:22.063202-03', datetime.datetime(2010, 10, 12, 15, 29, 22, 63202)),
+        ('2010-10-12 15:29:22.063202+04', datetime.datetime(2010, 10, 12, 15, 29, 22, 63202)),
+        ('2010-10-12 15:29:22.0632021', datetime.datetime(2010, 10, 12, 15, 29, 22, 63202)),
+        ('2010-10-12 15:29:22.0632029', datetime.datetime(2010, 10, 12, 15, 29, 22, 63202)),
     ),
     'typecast_boolean': (
         (None, None),
@@ -53,4 +59,4 @@ def test_typeCasts(self):
                 assert got == expected, "In %s: %r doesn't match %r. Got %r instead." % (k, inpt, expected, got)
 
 if __name__ == '__main__':
-    unittest.main()
+    unittest.main()