Mark system as unhealthy on OSError Bad message errors (#4750)

* Bad message error marks system as unhealthy

* Finish adding test cases for changes

* Rename test file for uniqueness

* bad_message to oserror_bad_message

* Omit some checks and check for network mounts

tests/hardware/test_helper.py

@@ -1,12 +1,15 @@
 """Test hardware utils."""
-# pylint: disable=protected-access
+import errno
 from pathlib import Path
-from unittest.mock import MagicMock
+from unittest.mock import MagicMock, patch
 
+from pytest import LogCaptureFixture
+
+from supervisor.coresys import CoreSys
 from supervisor.hardware.data import Device
 
 
-def test_have_audio(coresys):
+def test_have_audio(coresys: CoreSys):
     """Test usb device filter."""
     assert not coresys.hardware.helper.support_audio
 
@@ -26,7 +29,7 @@ def test_have_audio(coresys):
     assert coresys.hardware.helper.support_audio
 
 
-def test_have_usb(coresys):
+def test_have_usb(coresys: CoreSys):
     """Test usb device filter."""
     assert not coresys.hardware.helper.support_usb
 
@@ -46,7 +49,7 @@ def test_have_usb(coresys):
     assert coresys.hardware.helper.support_usb
 
 
-def test_have_gpio(coresys):
+def test_have_gpio(coresys: CoreSys):
     """Test usb device filter."""
     assert not coresys.hardware.helper.support_gpio
 
@@ -66,7 +69,7 @@ def test_have_gpio(coresys):
     assert coresys.hardware.helper.support_gpio
 
 
-def test_hide_virtual_device(coresys):
+def test_hide_virtual_device(coresys: CoreSys):
     """Test hidding virtual devices."""
     udev_device = MagicMock()
 
@@ -81,3 +84,15 @@ def test_hide_virtual_device(coresys):
 
     udev_device.sys_path = "/sys/devices/virtual/vc/vcs1"
     assert coresys.hardware.helper.hide_virtual_device(udev_device)
+
+
+def test_last_boot_error(coresys: CoreSys, caplog: LogCaptureFixture):
+    """Test error reading last boot."""
+    with patch(
+        "supervisor.hardware.helper.Path.read_text", side_effect=(err := OSError())
+    ):
+        err.errno = errno.EBADMSG
+        assert coresys.hardware.helper.last_boot is None
+
+        assert coresys.core.healthy is True
+        assert "Can't read stat data" in caplog.text