Add async_current_scanners API to Bluetooth integration

tests/components/bluetooth/test_api.py

@@ -9,6 +9,7 @@ from homeassistant.components import bluetooth
 from homeassistant.components.bluetooth import (
     MONOTONIC_TIME,
     BaseHaRemoteScanner,
+    BluetoothScanningMode,
     HaBluetoothConnector,
     async_scanner_by_source,
     async_scanner_devices_by_address,
@@ -16,6 +17,7 @@ from homeassistant.components.bluetooth import (
 from homeassistant.core import HomeAssistant
 
 from . import (
+    FakeRemoteScanner,
     FakeScanner,
     MockBleakClient,
     _get_manager,
@@ -161,3 +163,68 @@ async def test_async_scanner_devices_by_address_non_connectable(
     assert devices[0].ble_device.name == switchbot_device.name
     assert devices[0].advertisement.local_name == switchbot_device_adv.local_name
     cancel()
+
+
+@pytest.mark.usefixtures("enable_bluetooth")
+async def test_async_current_scanners(hass: HomeAssistant) -> None:
+    """Test getting the list of current scanners."""
+    # The enable_bluetooth fixture registers one scanner
+    initial_scanners = bluetooth.async_current_scanners(hass)
+    assert len(initial_scanners) == 1
+    initial_scanner_count = len(initial_scanners)
+
+    # Verify current_mode is accessible on the initial scanner
+    for scanner in initial_scanners:
+        assert hasattr(scanner, "current_mode")
+        # The mode might be None or a BluetoothScanningMode enum value
+
+    # Register additional connectable scanners
+    hci0_scanner = FakeScanner("hci0", "hci0")
+    hci1_scanner = FakeScanner("hci1", "hci1")
+    cancel_hci0 = bluetooth.async_register_scanner(hass, hci0_scanner)
+    cancel_hci1 = bluetooth.async_register_scanner(hass, hci1_scanner)
+
+    # Test that the new scanners are added
+    scanners = bluetooth.async_current_scanners(hass)
+    assert len(scanners) == initial_scanner_count + 2
+    assert hci0_scanner in scanners
+    assert hci1_scanner in scanners
+
+    # Verify current_mode is accessible on all scanners
+    for scanner in scanners:
+        assert hasattr(scanner, "current_mode")
+        # Verify it's None or the correct type (BluetoothScanningMode)
+        assert scanner.current_mode is None or isinstance(
+            scanner.current_mode, BluetoothScanningMode
+        )
+
+    # Register non-connectable scanner
+    connector = HaBluetoothConnector(
+        MockBleakClient, "mock_bleak_client", lambda: False
+    )
+    hci2_scanner = FakeRemoteScanner("hci2", "hci2", connector, False)
+    cancel_hci2 = bluetooth.async_register_scanner(hass, hci2_scanner)
+
+    # Test that all scanners are returned (both connectable and non-connectable)
+    all_scanners = bluetooth.async_current_scanners(hass)
+    assert len(all_scanners) == initial_scanner_count + 3
+    assert hci0_scanner in all_scanners
+    assert hci1_scanner in all_scanners
+    assert hci2_scanner in all_scanners
+
+    # Verify current_mode is accessible on all scanners including non-connectable
+    for scanner in all_scanners:
+        assert hasattr(scanner, "current_mode")
+        # The mode should be None or a BluetoothScanningMode instance
+        assert scanner.current_mode is None or isinstance(
+            scanner.current_mode, BluetoothScanningMode
+        )
+
+    # Clean up our scanners
+    cancel_hci0()
+    cancel_hci1()
+    cancel_hci2()
+
+    # Verify we're back to the initial scanner
+    final_scanners = bluetooth.async_current_scanners(hass)
+    assert len(final_scanners) == initial_scanner_count