Add support for the expirationTime parameter.

Enabled by default in Chrome 60.
Only accepts the param, doesn't act on the actual expiration date. Chrome will always pass NULL for now.

w3c/push-api#248
https://www.chromestatus.com/feature/4929396687241216
https://bugs.chromium.org/p/chromium/issues/detail?id=718837

homeassistant/components/notify/html5.py

@@ -48,6 +48,7 @@
 ATTR_KEYS = 'keys'
 ATTR_AUTH = 'auth'
 ATTR_P256DH = 'p256dh'
+ATTR_EXPIRATIONTIME = 'expirationTime'
 
 ATTR_TAG = 'tag'
 ATTR_ACTION = 'action'
@@ -71,7 +72,9 @@
                               vol.Schema({
                                   # pylint: disable=no-value-for-parameter
                                   vol.Required(ATTR_ENDPOINT): vol.Url(),
-                                  vol.Required(ATTR_KEYS): KEYS_SCHEMA
+                                  vol.Required(ATTR_KEYS): KEYS_SCHEMA,
+                                  vol.Optional(ATTR_EXPIRATIONTIME):
+                                      vol.Any(None, cv.positive_int)
                                   }))
 
 REGISTER_SCHEMA = vol.Schema({

tests/components/notify/test_html5.py

@@ -34,6 +34,14 @@
         },
     },
 }
+SUBSCRIPTION_4 = {
+    'browser': 'chrome',
+    'subscription': {
+        'endpoint': 'https://google.com',
+        'expirationTime': None,
+        'keys': {'auth': 'auth', 'p256dh': 'p256dh'}
+    },
+}
 
 REGISTER_URL = '/api/notify.html5'
 PUBLISH_URL = '/api/notify.html5/callback'
@@ -139,6 +147,44 @@ def test_registering_new_device_view(self, loop, test_client):
             handle = m()
             assert json.loads(handle.write.call_args[0][0]) == expected
 
+    @asyncio.coroutine
+    def test_registering_new_device_expiration_view(self, loop, test_client):
+        """Test that the HTML view works."""
+        hass = MagicMock()
+        expected = {
+            'unnamed device': SUBSCRIPTION_4,
+        }
+
+        m = mock_open()
+        with patch(
+                'homeassistant.components.notify.html5.open', m, create=True
+        ):
+            hass.config.path.return_value = 'file.conf'
+            service = html5.get_service(hass, {})
+
+            assert service is not None
+
+            # assert hass.called
+            assert len(hass.mock_calls) == 3
+
+            view = hass.mock_calls[1][1][0]
+            assert view.json_path == hass.config.path.return_value
+            assert view.registrations == {}
+
+            hass.loop = loop
+            app = mock_http_component_app(hass)
+            view.register(app.router)
+            client = yield from test_client(app)
+            hass.http.is_banned_ip.return_value = False
+            resp = yield from client.post(REGISTER_URL,
+                                          data=json.dumps(SUBSCRIPTION_4))
+
+            content = yield from resp.text()
+            assert resp.status == 200, content
+            assert view.registrations == expected
+            handle = m()
+            assert json.loads(handle.write.call_args[0][0]) == expected
+
     @asyncio.coroutine
     def test_registering_new_device_validation(self, loop, test_client):
         """Test various errors when registering a new device."""