From ca007f3672ddea6b329b2d8a5d34529905f82943 Mon Sep 17 00:00:00 2001
From: Richard Godden <7768980+goddenrich@users.noreply.github.com>
Date: Thu, 1 Aug 2019 21:49:32 +0100
Subject: [PATCH] parse microseconds

---
 config/dateutil.py      |  8 ++++++--
 config/dateutil_test.py | 31 +++++++++++++++++++++++--------
 2 files changed, 29 insertions(+), 10 deletions(-)

diff --git a/config/dateutil.py b/config/dateutil.py
index 402751cd..db880efa 100644
--- a/config/dateutil.py
+++ b/config/dateutil.py
@@ -46,6 +46,8 @@ def dst(self, dt):
                          re.VERBOSE + re.IGNORECASE)
 _re_timezone = re.compile(r"([-+])(\d\d?):?(\d\d)?")
 
+MICROSEC_PER_SEC = 1000000
+
 
 def parse_rfc3339(s):
     if isinstance(s, datetime.datetime):
@@ -57,8 +59,10 @@ def parse_rfc3339(s):
     dt = [0] * 7
     for x in range(6):
         dt[x] = int(groups[x])
+    us = 0
     if groups[6] is not None:
-        dt[6] = int(groups[6])
+        partial_sec = float(groups[6].replace(",", "."))
+        us = int(MICROSEC_PER_SEC * partial_sec)
     tz = UTC
     if groups[7] is not None and groups[7] != 'Z' and groups[7] != 'z':
         tz_groups = _re_timezone.search(groups[7]).groups()
@@ -72,7 +76,7 @@ def parse_rfc3339(s):
     return datetime.datetime(
         year=dt[0], month=dt[1], day=dt[2],
         hour=dt[3], minute=dt[4], second=dt[5],
-        microsecond=dt[6], tzinfo=tz)
+        microsecond=us, tzinfo=tz)
 
 
 def format_rfc3339(date_time):
diff --git a/config/dateutil_test.py b/config/dateutil_test.py
index 7a13fad0..f5587d6e 100644
--- a/config/dateutil_test.py
+++ b/config/dateutil_test.py
@@ -22,24 +22,39 @@
 
 class DateUtilTest(unittest.TestCase):
 
-    def _parse_rfc3339_test(self, st, y, m, d, h, mn, s):
+    def _parse_rfc3339_test(self, st, y, m, d, h, mn, s, us):
         actual = parse_rfc3339(st)
-        expected = datetime(y, m, d, h, mn, s, 0, UTC)
+        expected = datetime(y, m, d, h, mn, s, us, UTC)
         self.assertEqual(expected, actual)
 
     def test_parse_rfc3339(self):
         self._parse_rfc3339_test("2017-07-25T04:44:21Z",
-                                 2017, 7, 25, 4, 44, 21)
+                                 2017, 7, 25, 4, 44, 21, 0)
         self._parse_rfc3339_test("2017-07-25 04:44:21Z",
-                                 2017, 7, 25, 4, 44, 21)
+                                 2017, 7, 25, 4, 44, 21, 0)
         self._parse_rfc3339_test("2017-07-25T04:44:21",
-                                 2017, 7, 25, 4, 44, 21)
+                                 2017, 7, 25, 4, 44, 21, 0)
         self._parse_rfc3339_test("2017-07-25T04:44:21z",
-                                 2017, 7, 25, 4, 44, 21)
+                                 2017, 7, 25, 4, 44, 21, 0)
         self._parse_rfc3339_test("2017-07-25T04:44:21+03:00",
-                                 2017, 7, 25, 1, 44, 21)
+                                 2017, 7, 25, 1, 44, 21, 0)
         self._parse_rfc3339_test("2017-07-25T04:44:21-03:00",
-                                 2017, 7, 25, 7, 44, 21)
+                                 2017, 7, 25, 7, 44, 21, 0)
+
+        self._parse_rfc3339_test("2017-07-25T04:44:21,005Z",
+                                 2017, 7, 25, 4, 44, 21, 5000)
+        self._parse_rfc3339_test("2017-07-25T04:44:21.005Z",
+                                 2017, 7, 25, 4, 44, 21, 5000)
+        self._parse_rfc3339_test("2017-07-25 04:44:21.0050Z",
+                                 2017, 7, 25, 4, 44, 21, 5000)
+        self._parse_rfc3339_test("2017-07-25T04:44:21.5",
+                                 2017, 7, 25, 4, 44, 21, 500000)
+        self._parse_rfc3339_test("2017-07-25T04:44:21.005z",
+                                 2017, 7, 25, 4, 44, 21, 5000)
+        self._parse_rfc3339_test("2017-07-25T04:44:21.005+03:00",
+                                 2017, 7, 25, 1, 44, 21, 5000)
+        self._parse_rfc3339_test("2017-07-25T04:44:21.005-03:00",
+                                 2017, 7, 25, 7, 44, 21, 5000)
 
     def test_format_rfc3339(self):
         self.assertEqual(