Method test_append

xarray/tests/test_backends.py:3935–4013

(self)

            assert summary[k] <= expected[k], (k, summary)

    def test_append(self) -> None:
        original = Dataset({"foo": ("x", [1])}, coords={"x": [0]})
        modified = Dataset({"foo": ("x", [2])}, coords={"x": [1]})

        with self.create_zarr_target() as store:
            if has_zarr_v3:
                # TODO: verify these
                expected = {
                    "set": 5,
                    "get": 4,
                    "list_dir": 2,
                    "list_prefix": 1,
                }
            else:
                expected = {
                    "iter": 1,
                    "contains": 18,
                    "setitem": 10,
                    "getitem": 13,
                    "listdir": 0,
                    "list_prefix": 3,
                }

            patches = self.make_patches(store)
            with patch.multiple(KVStore, **patches):
                original.to_zarr(store)
            self.check_requests(expected, patches)

            patches = self.make_patches(store)
            # v2024.03.0: {'iter': 6, 'contains': 2, 'setitem': 5, 'getitem': 10, 'listdir': 6, 'list_prefix': 0}
            # 6057128b: {'iter': 5, 'contains': 2, 'setitem': 5, 'getitem': 10, "listdir": 5, "list_prefix": 0}
            if has_zarr_v3:
                expected = {
                    "set": 4,
                    "get": 9,  # TODO: fixme upstream (should be 8)
                    "list_dir": 2,  # TODO: fixme upstream (should be 2)
                    "list_prefix": 0,
                }
            else:
                expected = {
                    "iter": 1,
                    "contains": 11,
                    "setitem": 6,
                    "getitem": 15,
                    "listdir": 0,
                    "list_prefix": 1,
                }

            with patch.multiple(KVStore, **patches):
                modified.to_zarr(store, mode="a", append_dim="x")
            self.check_requests(expected, patches)

            patches = self.make_patches(store)

            if has_zarr_v3:
                expected = {
                    "set": 4,
                    "get": 9,  # TODO: fixme upstream (should be 8)