Allow finding relevant blueprints

tests/components/blueprint/test_init.py

@@ -1 +1,58 @@
 """Tests for the blueprint init."""
+
+from pathlib import Path
+from unittest.mock import patch
+
+from homeassistant.components import automation, blueprint
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers import device_registry as dr, entity_registry as er
+
+from tests.common import MockConfigEntry
+
+
+async def test_find_relevant_blueprints(
+    hass: HomeAssistant,
+    entity_registry: er.EntityRegistry,
+    device_registry: dr.DeviceRegistry,
+) -> None:
+    """Test finding relevant blueprints."""
+    config_entry = MockConfigEntry()
+    config_entry.add_to_hass(hass)
+
+    device = device_registry.async_get_or_create(
+        config_entry_id=config_entry.entry_id,
+        identifiers={("test_domain", "test_device")},
+        name="Test Device",
+    )
+    entity_registry.async_get_or_create(
+        "person",
+        "test_domain",
+        "test_entity",
+        device_id=device.id,
+        original_name="Test Person",
+    )
+
+    with patch.object(
+        hass.config,
+        "path",
+        return_value=Path(automation.__file__).parent / "blueprints",
+    ):
+        automation.async_get_blueprints(hass)
+        results = await blueprint.async_find_relevant_blueprints(hass, device.id)
+
+    for matches in results.values():
+        for match in matches:
+            match["blueprint"] = match["blueprint"].name
+
+    assert results == {
+        "automation": [
+            {
+                "blueprint": "Motion-activated Light",
+                "matched_input": {
+                    "Person": [
+                        "person.test_domain_test_entity",
+                    ]
+                },
+            }
+        ]
+    }