From 21871b3d6b10fd0a3365970c82dba69543d1f8b8 Mon Sep 17 00:00:00 2001
From: uchagani <umair.chagani@gmail.com>
Date: Thu, 21 Mar 2019 03:55:30 -0400
Subject: [PATCH] add date_time_iso to time_date sensor (#22199)

* add date_time_iso to time_date sensor

* hound fixes

* lint fixes
---
 homeassistant/components/time_date/sensor.py | 4 ++++
 tests/components/time_date/test_sensor.py    | 6 ++++++
 2 files changed, 10 insertions(+)

diff --git a/homeassistant/components/time_date/sensor.py b/homeassistant/components/time_date/sensor.py
index 1b346d409c4..7825867df64 100644
--- a/homeassistant/components/time_date/sensor.py
+++ b/homeassistant/components/time_date/sensor.py
@@ -25,6 +25,7 @@ OPTION_TYPES = {
     'time': 'Time',
     'date': 'Date',
     'date_time': 'Date & Time',
+    'date_time_iso': 'Date & Time ISO',
     'time_date': 'Time & Date',
     'beat': 'Internet Time',
     'time_utc': 'Time (UTC)',
@@ -123,6 +124,9 @@ class TimeDateSensor(Entity):
             self._state = time_utc
         elif self.type == 'beat':
             self._state = '@{0:03d}'.format(beat)
+        elif self.type == 'date_time_iso':
+            self._state = dt_util.parse_datetime(
+                '{} {}'.format(date, time)).isoformat()
 
     @callback
     def point_in_time_listener(self, time_date):
diff --git a/tests/components/time_date/test_sensor.py b/tests/components/time_date/test_sensor.py
index b2a22439c1f..84331abfba1 100644
--- a/tests/components/time_date/test_sensor.py
+++ b/tests/components/time_date/test_sensor.py
@@ -71,6 +71,10 @@ class TestTimeDateSensor(unittest.TestCase):
         device._update_internal_state(now)
         assert device.state == "@079"
 
+        device = time_date.TimeDateSensor(self.hass, 'date_time_iso')
+        device._update_internal_state(now)
+        assert device.state == "2017-05-18T00:54:00"
+
     # pylint: disable=no-member
     def test_timezone_intervals(self):
         """Test date sensor behavior in a timezone besides UTC."""
@@ -114,3 +118,5 @@ class TestTimeDateSensor(unittest.TestCase):
         assert device.icon == "mdi:calendar"
         device = time_date.TimeDateSensor(self.hass, 'date_time')
         assert device.icon == "mdi:calendar-clock"
+        device = time_date.TimeDateSensor(self.hass, 'date_time_iso')
+        assert device.icon == "mdi:calendar-clock"