Downgrade OctoPrint printer disconnected errors (#63076)

Co-authored-by: Franck Nijhof <git@frenck.dev>

tests/components/octoprint/test_sensor.py

@@ -144,3 +144,46 @@ async def test_sensors_paused(hass):
     assert state.name == "OctoPrint Estimated Finish Time"
     entry = entity_registry.async_get("sensor.octoprint_estimated_finish_time")
     assert entry.unique_id == "Estimated Finish Time-uuid"
+
+
+async def test_sensors_printer_disconnected(hass):
+    """Test the underlying sensors."""
+    job = {
+        "job": {},
+        "progress": {"completion": 50, "printTime": 600, "printTimeLeft": 6000},
+        "state": "Paused",
+    }
+    with patch(
+        "homeassistant.util.dt.utcnow", return_value=datetime(2020, 2, 20, 9, 10, 0)
+    ):
+        await init_integration(hass, "sensor", printer=None, job=job)
+
+    entity_registry = er.async_get(hass)
+
+    state = hass.states.get("sensor.octoprint_job_percentage")
+    assert state is not None
+    assert state.state == "50"
+    assert state.name == "OctoPrint Job Percentage"
+    entry = entity_registry.async_get("sensor.octoprint_job_percentage")
+    assert entry.unique_id == "Job Percentage-uuid"
+
+    state = hass.states.get("sensor.octoprint_current_state")
+    assert state is not None
+    assert state.state == "unavailable"
+    assert state.name == "OctoPrint Current State"
+    entry = entity_registry.async_get("sensor.octoprint_current_state")
+    assert entry.unique_id == "Current State-uuid"
+
+    state = hass.states.get("sensor.octoprint_start_time")
+    assert state is not None
+    assert state.state == "unknown"
+    assert state.name == "OctoPrint Start Time"
+    entry = entity_registry.async_get("sensor.octoprint_start_time")
+    assert entry.unique_id == "Start Time-uuid"
+
+    state = hass.states.get("sensor.octoprint_estimated_finish_time")
+    assert state is not None
+    assert state.state == "unknown"
+    assert state.name == "OctoPrint Estimated Finish Time"
+    entry = entity_registry.async_get("sensor.octoprint_estimated_finish_time")
+    assert entry.unique_id == "Estimated Finish Time-uuid"