[ln882h_ble_tracker] BLE 5.x scanner for LN882H (#16691)

Co-authored-by: J. Nick Koston <nick@home-assistant.io>

tests/component_tests/ble_device_base/test_scan_parameter_validation.py

@@ -10,6 +10,9 @@ from esphome.components.bk72xx_ble_tracker import (
 )
 from esphome.components.ble_device_base import to_ble_units
 from esphome.components.esp32_ble_tracker import SCAN_PARAMETERS_SCHEMA as ESP32_SCHEMA
+from esphome.components.ln882h_ble_tracker import (
+    SCAN_PARAMETERS_SCHEMA as LN882H_SCHEMA,
+)
 from esphome.components.rp2_ble_tracker import SCAN_PARAMETERS_SCHEMA as RP2_SCHEMA
 
 
@@ -69,6 +72,15 @@ def test_rp2_defaults_are_valid() -> None:
     assert config["active"] is True
 
 
+def test_ln882h_defaults_are_valid() -> None:
+    """ln882h pins the LN SDK reference rate — 100 ms interval / 50 ms window
+    (50 % duty) — and exposes active (default on)."""
+    config = LN882H_SCHEMA({})
+    assert to_ble_units(config["interval"]) == 160
+    assert to_ble_units(config["window"]) == 80
+    assert config["active"] is True
+
+
 def test_esp32_active_can_disable() -> None:
     config = ESP32_SCHEMA({"active": False})
     assert config["active"] is False

tests/components/ln882h_ble_tracker/common-boundary.yaml

@@ -0,0 +1,12 @@
+ln882h_ble_tracker:
+  id: ble_tracker
+  scan_parameters:
+    # Boundary coverage: the documented 2.5 ms floor on window (expressible only
+    # via the microsecond-accurate validation), a non-round interval exercising the
+    # 0.625 ms unit conversion without collapsing onto the window's unit count,
+    # and the non-continuous config path.
+    interval: 5000us
+    window: 2500us
+    duration: 5min
+    active: false
+    continuous: false

tests/components/ln882h_ble_tracker/common.yaml

@@ -0,0 +1,16 @@
+ln882h_ble_tracker:
+  id: ble_tracker
+  scan_parameters:
+    interval: 100ms
+    window: 50ms
+    duration: 5min
+    continuous: true
+
+# Pulls in USE_OTA_STATE_LISTENER so the OTA scan-pause path compiles in CI
+# (same coverage arrangement as the rp2_ble_tracker tests).
+wifi:
+  ssid: MySSID
+  password: password1
+
+ota:
+  - platform: esphome

tests/components/ln882h_ble_tracker/test.ln882x-ard.yaml

@@ -0,0 +1,2 @@
+packages:
+  ln882h_ble_tracker: !include common.yaml

tests/components/ln882h_ble_tracker/validate-boundary.ln882x-ard.yaml

@@ -0,0 +1,2 @@
+packages:
+  ln882h_ble_tracker: !include common-boundary.yaml