Apply ruff rule RUF029

RUF029 Function is declared `async`, but doesn't `await` or use `async` features.

This future rule is triggered in preview mode.

Author: DimitriPapadopoulos

tests/v3/test_metadata/test_v3.py

@@ -279,7 +279,7 @@ def test_metadata_to_dict(
 #     assert result["fill_value"] == fill_value
 
 
-async def test_invalid_dtype_raises() -> None:
+def test_invalid_dtype_raises() -> None:
     metadata_dict = {
         "zarr_format": 3,
         "node_type": "array",
@@ -303,7 +303,7 @@ def test_parse_invalid_dtype_raises(data):
 @pytest.mark.parametrize(
     "data_type,fill_value", [("uint8", -1), ("int32", 22.5), ("float32", "foo")]
 )
-async def test_invalid_fill_value_raises(data_type: str, fill_value: float) -> None:
+def test_invalid_fill_value_raises(data_type: str, fill_value: float) -> None:
     metadata_dict = {
         "zarr_format": 3,
         "node_type": "array",
@@ -319,7 +319,7 @@ async def test_invalid_fill_value_raises(data_type: str, fill_value: float) -> N
 
 
 @pytest.mark.parametrize("fill_value", [("NaN"), "Infinity", "-Infinity"])
-async def test_special_float_fill_values(fill_value: str) -> None:
+def test_special_float_fill_values(fill_value: str) -> None:
     metadata_dict = {
         "zarr_format": 3,
         "node_type": "array",

tests/v3/test_sync.py

@@ -82,7 +82,7 @@ def foo() -> str:
         # yields a warning because it is never awaited by the inner function
         return "foo"
 
-    async def bar() -> str:
+    def bar() -> str:
         return sync(foo(), loop=sync_loop)  # type: ignore[arg-type]
 
     with pytest.raises(SyncError):