test: skip fsspec-backed get_ranges tests on old fsspec

The min_deps CI job pins fsspec to 2023.10.0, which predates
AsyncFileSystemWrapper. Wrapping a sync MemoryFileSystem fails there at
fixture setup. Guard the affected tests with the same skipif pattern
already used in test_fsspec.py.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: d-v-b

tests/test_store/test_fsspec_get_ranges.py

@@ -8,6 +8,7 @@
 from __future__ import annotations
 
 import pytest
+from packaging.version import parse as parse_version
 
 from zarr.abc.store import RangeByteRequest
 from zarr.core._coalesce import DEFAULT_COALESCE_OPTIONS, CoalesceOptions
@@ -17,6 +18,13 @@
 
 fsspec = pytest.importorskip("fsspec")
 
+# AsyncFileSystemWrapper (needed to wrap a sync MemoryFileSystem) landed in fsspec 2024.12.0.
+# Older versions are pinned by the min-deps CI job, so skip the whole file there.
+pytestmark = pytest.mark.skipif(
+    parse_version(fsspec.__version__) < parse_version("2024.12.0"),
+    reason="No AsyncFileSystemWrapper",
+)
+
 
 @pytest.fixture
 def memory_store() -> FsspecStore:

tests/test_store/test_protocols.py

@@ -7,9 +7,20 @@
 
 from zarr.storage._protocols import SupportsGetRanges
 
+fsspec = pytest.importorskip("fsspec")
 
+from packaging.version import parse as parse_version  # noqa: E402
+
+# AsyncFileSystemWrapper (needed to wrap a sync MemoryFileSystem) landed in fsspec 2024.12.0.
+# Older versions are pinned by the min-deps CI job.
+_needs_async_wrapper = pytest.mark.skipif(
+    parse_version(fsspec.__version__) < parse_version("2024.12.0"),
+    reason="No AsyncFileSystemWrapper",
+)
+
+
+@_needs_async_wrapper
 def test_fsspec_store_satisfies_supports_get_ranges() -> None:
-    pytest.importorskip("fsspec")
     from fsspec.implementations.memory import MemoryFileSystem
 
     from zarr.storage import FsspecStore
@@ -34,5 +45,4 @@ def test_type_assignment_at_module_level() -> None:
 
     If this runs without error the module imported cleanly; the static check is in mypy.
     """
-    pytest.importorskip("fsspec")
     from zarr.storage import _fsspec  # noqa: F401