wip

Author: d-v-b

pyproject.toml

@@ -262,6 +262,13 @@ run-coverage = "pytest --cov-config=pyproject.toml --cov=pkg --cov-report xml --
 run-coverage-gpu = "pip install cupy-cuda12x && pytest -m gpu --cov-config=pyproject.toml --cov=pkg --cov-report xml --cov=src --junitxml=junit.xml -o junit_family=legacy"
 run-coverage-html = "pytest --cov-config=pyproject.toml --cov=pkg --cov-report html --cov=src"
 
+[tool.hatch.envs.time_travel]
+description = "Test environment for tests against older zarr-python versions"
+dependencies = [
+    "hatch ==1.14.1"
+    ]
+features=["test"]
+
 [tool.ruff]
 line-length = 100
 force-exclude = true

tests/test_time_travel/test_time_travel.py

@@ -0,0 +1,35 @@
+from pathlib import Path
+
+import numpy as np
+import pytest
+from numcodecs import GZip
+
+from zarr.core.group import GroupMetadata, create_hierarchy
+from zarr.core.metadata.v2 import ArrayV2Metadata
+from zarr.storage import LocalStore
+
+
+@pytest.fixture
+def hierarchy_model(request: pytest.FixtureRequest) -> dict[str, ArrayV2Metadata | GroupMetadata]:
+    dtype = np.uint8()
+    return {
+        "": GroupMetadata(attributes={"foo": "bar"}, zarr_format=2),
+        "/array": ArrayV2Metadata(
+            shape=(10, 10),
+            dtype=dtype,
+            chunks=(10, 10),
+            compressor=GZip(),
+            fill_value=1,
+            order="C",
+            filters=[GZip()],
+        ),
+    }
+
+
+async def test_copy(
+    tmp_path: Path, hierarchy_model: dict[str, ArrayV2Metadata | GroupMetadata]
+) -> None:
+    # create the hierarchy
+    store = LocalStore(tmp_path)
+    [x async for x in create_hierarchy(store=store, nodes=hierarchy_model)]
+    breakpoint()