Add JSON support to load_fixture (#88076)

* Add JSON support to load_fixture

* More tests

* Remove lru_cache on load_json

tests/common.py

@@ -67,6 +67,14 @@ from homeassistant.helpers.typing import ConfigType, StateType
 from homeassistant.setup import setup_component
 from homeassistant.util.async_ import run_callback_threadsafe
 import homeassistant.util.dt as date_util
+from homeassistant.util.json import (
+    JsonArrayType,
+    JsonObjectType,
+    JsonValueType,
+    json_loads,
+    json_loads_array,
+    json_loads_object,
+)
 from homeassistant.util.unit_system import METRIC_SYSTEM
 import homeassistant.util.uuid as uuid_util
 import homeassistant.util.yaml.loader as yaml_loader
@@ -428,6 +436,27 @@ def load_fixture(filename: str, integration: str | None = None) -> str:
     return get_fixture_path(filename, integration).read_text()
 
 
+def load_json_value_fixture(
+    filename: str, integration: str | None = None
+) -> JsonValueType:
+    """Load a JSON value from a fixture."""
+    return json_loads(load_fixture(filename, integration))
+
+
+def load_json_array_fixture(
+    filename: str, integration: str | None = None
+) -> JsonArrayType:
+    """Load a JSON array from a fixture."""
+    return json_loads_array(load_fixture(filename, integration))
+
+
+def load_json_object_fixture(
+    filename: str, integration: str | None = None
+) -> JsonObjectType:
+    """Load a JSON object from a fixture."""
+    return json_loads_object(load_fixture(filename, integration))
+
+
 def mock_state_change_event(
     hass: HomeAssistant, new_state: State, old_state: State | None = None
 ) -> None: