Add Random binary sensor (#10164)

tests/components/binary_sensor/test_random.py

@@ -0,0 +1,51 @@
+"""The test for the Random binary sensor platform."""
+import unittest
+from unittest.mock import patch
+
+from homeassistant.setup import setup_component
+
+from tests.common import get_test_home_assistant
+
+
+class TestRandomSensor(unittest.TestCase):
+    """Test the Random binary sensor."""
+
+    def setup_method(self, method):
+        """Set up things to be run when tests are started."""
+        self.hass = get_test_home_assistant()
+
+    def teardown_method(self, method):
+        """Stop everything that was started."""
+        self.hass.stop()
+
+    @patch('random.getrandbits', return_value=1)
+    def test_random_binary_sensor_on(self, mocked):
+        """Test the Random binary sensor."""
+        config = {
+            'binary_sensor': {
+                'platform': 'random',
+                'name': 'test',
+            }
+        }
+
+        assert setup_component(self.hass, 'binary_sensor', config)
+
+        state = self.hass.states.get('binary_sensor.test')
+
+        self.assertEqual(state.state, 'on')
+
+    @patch('random.getrandbits', return_value=False)
+    def test_random_binary_sensor_off(self, mocked):
+        """Test the Random binary sensor."""
+        config = {
+            'binary_sensor': {
+                'platform': 'random',
+                'name': 'test',
+            }
+        }
+
+        assert setup_component(self.hass, 'binary_sensor', config)
+
+        state = self.hass.states.get('binary_sensor.test')
+
+        self.assertEqual(state.state, 'off')