From a14fec6b2aecc91f99fe2647f175b8fa0a4a70c0 Mon Sep 17 00:00:00 2001
From: Jens Kleineheismann <heinzel@alpenverein-karlsruhe.de>
Date: Tue, 26 Mar 2019 17:20:56 +0100
Subject: [PATCH] ADD: dav_events: imperfect test for iso date serializer.

---
 dav_events/tests/test_converters.py | 74 +++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100644 dav_events/tests/test_converters.py

diff --git a/dav_events/tests/test_converters.py b/dav_events/tests/test_converters.py
new file mode 100644
index 0000000..a43c796
--- /dev/null
+++ b/dav_events/tests/test_converters.py
@@ -0,0 +1,74 @@
+import sys
+import datetime
+from unittest import TestCase
+
+from ..converters import Iso8601Serializer
+
+
+class Iso8601SerializerTestCase(TestCase):
+    def _gen_dates(self, start_date, end_date, step=1):
+        date = start_date
+        while date <= end_date:
+            text = '%04d-%02d-%02d' % (date.year, date.month, date.day)
+            yield (date, text)
+            date += datetime.timedelta(step)
+
+    def _gen_times(self, step_hours=1, step_minutes=1, step_seconds=1):
+        for hour in range(0, 13, step_hours):
+            for minute in range(0, 60, step_minutes):
+                for second in range(0, 60, step_seconds):
+                    text = '%02d:%02d:%02d' % (hour, minute, second)
+                    time = datetime.time(hour, minute, second)
+                    yield (time, text)
+
+    def _gen_datetimes(self, start_date, end_date, step_days=47, step_hours=1, step_minutes=13, step_seconds=17):
+        for date, date_text in self._gen_dates(start_date, end_date, step_days):
+            for time, time_text in self._gen_times(step_hours, step_minutes, step_seconds):
+                text = '{}T{}'.format(date_text, time_text)
+                obj = datetime.datetime.combine(date, time)
+                yield (obj, text)
+
+    def test_serialize(self):
+        test_data = []
+
+        # Check date objects
+        # Populate test data with all days between 1970 and 2070
+        test_data += self._gen_dates(datetime.date(1970, 1, 1), datetime.date(2070, 12, 31))
+        # Check time objects
+        test_data += self._gen_times()
+        # Check datetime objects
+        test_data += self._gen_datetimes(datetime.date(1999, 1, 1), datetime.date(2035, 12, 31))
+
+        for obj, text in test_data:
+            expected = 'ISO8601:{}'.format(text)
+            serialized = Iso8601Serializer.serialize(obj)
+            self.assertEqual(serialized, expected)
+
+        # Check invalid input
+        invalid_values = (
+            None, True, False,
+            '2019-03-01',
+        )
+        for value in invalid_values:
+            emsg = ('Expected datetime.datetime, datetime.date or datetime.time,' 
+                    ' not {}'.format(value.__class__.__name__))
+            with self.assertRaisesRegexp(ValueError, emsg):
+                Iso8601Serializer.serialize(value)
+            serialized = Iso8601Serializer.serialize(value, ignore_unsupported_input=True)
+            self.assertEqual(serialized, value)
+
+    def test_deserialize(self):
+        test_data = []
+
+        # Check '<YYYY>-<MM>-<DD>' format
+        test_data += self._gen_dates(datetime.date(1970, 1, 1), datetime.date(2070, 12, 31))
+        # Check '<HH>:<MM>:<SS>' format
+        test_data += self._gen_times()
+        # Check '<YYYY>-<MM>-<DD>T<HH>:<MM>:<SS>' format
+        test_data += self._gen_datetimes(datetime.date(1999, 1, 1), datetime.date(2035, 12, 31))
+
+        for obj, text in test_data:
+            text = 'ISO8601:{}'.format(text)
+            deserialized = Iso8601Serializer.deserialize(text)
+            self.assertIsInstance(deserialized, obj.__class__)
+            self.assertEqual(deserialized, obj)