Use setup_test_component_platform helper for binary_sensor entity component tests instead of hass.components (#114293)

tests/components/binary_sensor/common.py

@@ -0,0 +1,19 @@
+"""Common test utilities for binary_sensor entity component tests."""
+
+from homeassistant.components.binary_sensor import BinarySensorEntity
+
+from tests.common import MockEntity
+
+
+class MockBinarySensor(MockEntity, BinarySensorEntity):
+    """Mock Binary Sensor class."""
+
+    @property
+    def is_on(self):
+        """Return true if the binary sensor is on."""
+        return self._handle("is_on")
+
+    @property
+    def device_class(self):
+        """Return the class of this sensor."""
+        return self._handle("device_class")