Introduced Ring binary sensors and refactored Ring component (#6520)

* - Introduced Ring binary_sensor.

- Added unittest for Ring binary_sensor.

- Bumped ring_doorbell 3rd party module.

* Updated requirements

* Added correct file for unittest

* - Introduced Ring binary_sensor.

- Added unittest for Ring binary_sensor.

- Bumped ring_doorbell 3rd party module.

* Updated requirements

* Added correct file for unittest

* Added extra sensors last_ding and last_motion

* Modified Ring binary_sensor and sensor to inherit DOMAIN configuration

* Moved static to top ring.py

* Fixed requirements

* Bump version ring_doorbell to 0.1.2

* testing unittests

* Use hass.data dict instead GLOBALS

* Fixed unittests

* Bump ring_doorbell to 0.1.3

* Updated unittest and coverted to use decorator @requests_mock.Mocker()

* Updated ring_session with lower case

tests/components/test_ring.py

@@ -0,0 +1,56 @@
+"""The tests for the Ring component."""
+import unittest
+import requests_mock
+
+from homeassistant import setup
+import homeassistant.components.ring as ring
+
+from tests.common import get_test_home_assistant, load_fixture
+
+ATTRIBUTION = 'Data provided by Ring.com'
+
+VALID_CONFIG = {
+    "ring": {
+        "username": "foo",
+        "password": "bar",
+    }
+}
+
+
+class TestRing(unittest.TestCase):
+    """Tests the Ring component."""
+
+    def setUp(self):
+        """Initialize values for this test case class."""
+        self.hass = get_test_home_assistant()
+        self.config = VALID_CONFIG
+
+    def tearDown(self):  # pylint: disable=invalid-name
+        """Stop everything that was started."""
+        self.hass.stop()
+
+    @requests_mock.Mocker()
+    def test_setup(self, mock):
+        """Test the setup."""
+        mock.post('https://api.ring.com/clients_api/session',
+                  text=load_fixture('ring_session.json'))
+        response = ring.setup(self.hass, self.config)
+        self.assertTrue(response)
+
+    @requests_mock.Mocker()
+    def test_setup_component_no_login(self, mock):
+        """Test the setup when no login is configured."""
+        mock.post('https://api.ring.com/clients_api/session',
+                  text=load_fixture('ring_session.json'))
+        conf = self.config.copy()
+        del conf['ring']['username']
+        assert not setup.setup_component(self.hass, ring.DOMAIN, conf)
+
+    @requests_mock.Mocker()
+    def test_setup_component_no_pwd(self, mock):
+        """Test the setup when no password is configured."""
+        mock.post('https://api.ring.com/clients_api/session',
+                  text=load_fixture('ring_session.json'))
+        conf = self.config.copy()
+        del conf['ring']['password']
+        assert not setup.setup_component(self.hass, ring.DOMAIN, conf)