Fix type

Error for check type of file
Add tests

src/battery/battery/power.py

@@ -22,7 +22,7 @@ class Battery:
 def find_uevent(batteries: List[str]) -> Union[Path, None]:
     for battery in batteries:
         uevent_path = POWER_CLASS.joinpath(battery, "uevent")
-        if uevent_path.is_fifo():
+        if uevent_path.is_file():
             return uevent_path
     return None
 
@@ -35,14 +35,26 @@ def read_uevent(filename: Path) -> Dict[str, str]:
 
 
 def battery_info(uevent: Dict[str, str]) -> Battery:
+    power_full = [
+        "POWER_SUPPLY_ENERGY_FULL_DESIGN"
+        "POWER_SUPPLY_ENERGY_FULL",
+        "POWER_SUPPLY_CHARGE_FULL",
+    ]
     return Battery(
         name=uevent.get("POWER_SUPPLY_NAME", "??"),
         model=uevent.get("POWER_SUPPLY_MODEL_NAME", ""),
         manufacturer=uevent.get("POWER_SUPPLY_MANUFACTURER", ""),
         technology=uevent.get("POWER_SUPPLY_TECHNOLOGY", ""),
-        capacity=float(uevent.get("POWER_SUPPLY_CHARGE_FULL", 0)) / 1e6,
+        capacity=float(find_first(uevent, power_full, "0")) / 1e6,
         percent=int(uevent.get("POWER_SUPPLY_CAPACITY", 0)),
         status=uevent.get("POWER_SUPPLY_STATUS", "??"),
         time_to_empty=int(uevent.get("POWER_SUPPLY_TIME_TO_EMPTY_NOW", 0)),
         current=int(float(uevent.get("POWER_SUPPLY_CURRENT_NOW", 0)) / 1e3),
     )
+
+
+def find_first(uevent: Dict[str, str], keys: List[str], default: str) -> str:
+    for key in keys:
+        if key in uevent:
+            return uevent[key]
+    return default

src/battery/tests/test_power.py

@@ -1,7 +1,7 @@
 import unittest
 from pathlib import Path
 
-from battery.power import Battery, battery_info, read_uevent
+from battery.power import Battery, battery_info, read_uevent, find_first
 
 
 def load_fixture(filename: str) -> dict[str, str]:
@@ -81,3 +81,11 @@ class TestPower(unittest.TestCase):
                 uevent = load_fixture(filename)
                 info = battery_info(uevent)
                 self.assertEqual(info, expected_info)
+
+    def test_find_first_default(self) -> None:
+        uevent = {"ONE": 1, "TWO": 2, "THREE": 3}
+        self.assertEqual(find_first(uevent, ["XX", "YY"], 10), 10)
+
+    def test_find_first_more_values(self) -> None:
+        uevent = {"ONE": 1, "TWO": 2, "THREE": 3}
+        self.assertEqual(find_first(uevent, ["TWO", "ONE", "XX"], 10), 2)