test_dim_separator.py Generate fixtures when needed (zarr-developers#824)

joshmoore · web-flow · commit 3a64977e6a0f · 2021-08-26T11:40:01.000+02:00
* test_dim_separator.py Generate fixtures when needed see: conda-forge/zarr-feedstock#50 * Correct flake8 issues * Add 'pragma: no cover' to the one-off
diff --git a/zarr/tests/test_dim_separator.py b/zarr/tests/test_dim_separator.py
@@ -36,9 +36,19 @@ def dataset(tmpdir, request):
     if which.startswith("static"):
         project_root = pathlib.Path(zarr.__file__).resolve().parent.parent
         if which.endswith("nested"):
-            return str(project_root / "fixture/nested")
+            static = project_root / "fixture/nested"
+            generator = NestedDirectoryStore
         else:
-            return str(project_root / "fixture/flat")
+            static = project_root / "fixture/flat"
+            generator = DirectoryStore
+
+        if not static.exists():  # pragma: no cover
+            # store the data - should be one-time operation
+            s = generator(str(static))
+            a = zarr.open(store=s, mode="w", shape=(2, 2), dtype="<i8")
+            a[:] = [[1, 2], [3, 4]]
+
+        return str(static)
 
     if which.startswith("directory"):
         store_class = DirectoryStore
