Return list of possible data disk targets (#3133)

* Return list of possible data disk targets

* fix path

* fix tests

* Add test

* Fix tests

* Add tests

* Add more tests

* Remove debug

* Address comments

* more clear

tests/os/test_data_disk.py

@@ -0,0 +1,64 @@
+"""Test OS API."""
+from pathlib import Path, PosixPath
+
+import pytest
+
+from supervisor.coresys import CoreSys
+from supervisor.exceptions import HassOSDataDiskError
+from supervisor.hardware.data import Device
+
+# pylint: disable=protected-access
+
+
+@pytest.mark.asyncio
+async def tests_datadisk_current(coresys: CoreSys):
+    """Test current datadisk."""
+    await coresys.dbus.agent.connect()
+    await coresys.dbus.agent.update()
+
+    assert coresys.os.datadisk.disk_used == PosixPath("/dev/sda")
+
+
+@pytest.mark.asyncio
+async def test_datadisk_move(coresys: CoreSys):
+    """Test datadisk moved without exists device."""
+    await coresys.dbus.agent.connect()
+    await coresys.dbus.agent.update()
+    coresys.os._available = True
+
+    with pytest.raises(HassOSDataDiskError):
+        await coresys.os.datadisk.migrate_disk(Path("/dev/sdaaaa"))
+
+
+@pytest.mark.asyncio
+async def test_datadisk_list(coresys: CoreSys):
+    """Test docker info api."""
+    await coresys.dbus.agent.connect()
+    await coresys.dbus.agent.update()
+
+    coresys.hardware.update_device(
+        Device(
+            "sda",
+            Path("/dev/sda"),
+            Path("/sys/bus/usb/000"),
+            "block",
+            None,
+            [Path("/dev/serial/by-id/test")],
+            {"ID_NAME": "xy", "MINOR": "0", "DEVTYPE": "disk"},
+            [],
+        )
+    )
+    coresys.hardware.update_device(
+        Device(
+            "sda1",
+            Path("/dev/sda1"),
+            Path("/sys/bus/usb/000/1"),
+            "block",
+            None,
+            [Path("/dev/serial/by-id/test1")],
+            {"ID_NAME": "xy", "MINOR": "1", "DEVTYPE": "partition"},
+            [],
+        )
+    )
+
+    assert coresys.os.datadisk.available_disks == [PosixPath("/dev/sda")]