diff --git a/.github/workflows/ci-tests.yml b/.github/workflows/ci-tests.yml
index c01b881f..a30842a2 100644
--- a/.github/workflows/ci-tests.yml
+++ b/.github/workflows/ci-tests.yml
@@ -11,7 +11,6 @@ on:
   push:
     branches:
       - "main"
-      - "v*x"
     tags:
       - "v*"
   pull_request:
@@ -49,7 +48,7 @@ jobs:
 
       - name: "Install dependencies"
         run: |
-          conda install --yes numpy pytest pytest-mock iris xarray filelock requests
+          conda install --yes numpy pytest pytest-mock iris xarray filelock requests zarr aiohttp fsspec
 
       - name: "Install *latest* Iris"
         run: |
diff --git a/lib/ncdata/utils/_compare_nc_datasets.py b/lib/ncdata/utils/_compare_nc_datasets.py
index 8c7053db..b9892a39 100644
--- a/lib/ncdata/utils/_compare_nc_datasets.py
+++ b/lib/ncdata/utils/_compare_nc_datasets.py
@@ -14,7 +14,6 @@
 import netCDF4
 import netCDF4 as nc
 import numpy as np
-
 from ncdata import NcData, NcVariable
 
 
diff --git a/lib/ncdata/utils/_save_errors.py b/lib/ncdata/utils/_save_errors.py
index aa2e7228..f8cfcaf8 100644
--- a/lib/ncdata/utils/_save_errors.py
+++ b/lib/ncdata/utils/_save_errors.py
@@ -3,7 +3,6 @@
 
 import netCDF4 as nc
 import numpy as np
-
 from ncdata import NcData, NcVariable
 
 
diff --git a/tests/integration/equivalence_testing_utils.py b/tests/integration/equivalence_testing_utils.py
index 8693bc6d..87a11dca 100644
--- a/tests/integration/equivalence_testing_utils.py
+++ b/tests/integration/equivalence_testing_utils.py
@@ -5,11 +5,10 @@
 ncdata and other types of data preserve information.
 """
 import dask.array as da
+import iris.mesh
 import numpy as np
 import pytest
 
-import iris.mesh
-
 
 def cubes_equal__corrected(c1, c2):
     """
diff --git a/tests/integration/example_scripts/ex_dataset_print.py b/tests/integration/example_scripts/ex_dataset_print.py
index 5f3251fb..83ea63eb 100644
--- a/tests/integration/example_scripts/ex_dataset_print.py
+++ b/tests/integration/example_scripts/ex_dataset_print.py
@@ -1,8 +1,8 @@
 """Temporary integrational proof-of-concept example for dataset printout."""
 import iris
-
 import ncdata.iris as nci
 from ncdata import NcData, NcDimension, NcVariable
+
 from tests import testdata_dir
 
 
diff --git a/tests/integration/example_scripts/ex_iris_saveto_ncdata.py b/tests/integration/example_scripts/ex_iris_saveto_ncdata.py
index c4a3c14b..ec24eeb2 100644
--- a/tests/integration/example_scripts/ex_iris_saveto_ncdata.py
+++ b/tests/integration/example_scripts/ex_iris_saveto_ncdata.py
@@ -4,8 +4,8 @@
 Check that conversion succeeds and print the resulting dataset.
 """
 import iris
-
 from ncdata.iris import from_iris
+
 from tests import testdata_dir
 
 
diff --git a/tests/integration/example_scripts/ex_iris_xarray_conversion.py b/tests/integration/example_scripts/ex_iris_xarray_conversion.py
index 018c1548..361a9c08 100644
--- a/tests/integration/example_scripts/ex_iris_xarray_conversion.py
+++ b/tests/integration/example_scripts/ex_iris_xarray_conversion.py
@@ -7,8 +7,8 @@
 import iris
 import numpy as np
 import xarray as xr
-
 from ncdata.iris_xarray import cubes_from_xarray, cubes_to_xarray
+
 from tests import testdata_dir
 
 
diff --git a/tests/integration/example_scripts/ex_ncdata_netcdf_conversion.py b/tests/integration/example_scripts/ex_ncdata_netcdf_conversion.py
index 7f2e614e..becc646c 100644
--- a/tests/integration/example_scripts/ex_ncdata_netcdf_conversion.py
+++ b/tests/integration/example_scripts/ex_ncdata_netcdf_conversion.py
@@ -9,10 +9,10 @@
 
 import netCDF4 as nc
 import numpy as np
-
 from ncdata import NcData, NcDimension, NcVariable
 from ncdata.netcdf4 import from_nc4, to_nc4
 from ncdata.utils import dataset_differences
+
 from tests import testdata_dir
 
 
diff --git a/tests/integration/test_iris_load_and_save_equivalence.py b/tests/integration/test_iris_load_and_save_equivalence.py
index 7ad3eb95..5117fca5 100644
--- a/tests/integration/test_iris_load_and_save_equivalence.py
+++ b/tests/integration/test_iris_load_and_save_equivalence.py
@@ -9,9 +9,9 @@
 
 import iris
 import pytest
-
 from ncdata.netcdf4 import from_nc4, to_nc4
 from ncdata.utils import dataset_differences
+
 from tests.data_testcase_schemas import session_testdir, standard_testcase
 from tests.integration.equivalence_testing_utils import (
     adjust_chunks,
diff --git a/tests/integration/test_iris_xarray_roundtrips.py b/tests/integration/test_iris_xarray_roundtrips.py
index 9ece022b..7cfeabac 100644
--- a/tests/integration/test_iris_xarray_roundtrips.py
+++ b/tests/integration/test_iris_xarray_roundtrips.py
@@ -13,13 +13,13 @@
 import numpy as np
 import pytest
 import xarray
-
 from ncdata.iris import from_iris
 from ncdata.iris_xarray import cubes_to_xarray
 from ncdata.netcdf4 import from_nc4
 from ncdata.threadlock_sharing import lockshare_context
 from ncdata.utils import dataset_differences
 from ncdata.xarray import from_xarray
+
 from tests.data_testcase_schemas import (
     BAD_LOADSAVE_TESTCASES,
     session_testdir,
diff --git a/tests/integration/test_netcdf_roundtrips.py b/tests/integration/test_netcdf_roundtrips.py
index 6fe635d5..db9ea467 100644
--- a/tests/integration/test_netcdf_roundtrips.py
+++ b/tests/integration/test_netcdf_roundtrips.py
@@ -5,6 +5,7 @@
 
 from ncdata.netcdf4 import from_nc4, to_nc4
 from ncdata.utils import dataset_differences
+
 from tests.data_testcase_schemas import session_testdir, standard_testcase
 
 # Avoid complaints that the imported fixtures are "unused"
diff --git a/tests/integration/test_xarray_load_and_save_equivalence.py b/tests/integration/test_xarray_load_and_save_equivalence.py
index d7fb3164..f36eb06b 100644
--- a/tests/integration/test_xarray_load_and_save_equivalence.py
+++ b/tests/integration/test_xarray_load_and_save_equivalence.py
@@ -7,11 +7,11 @@
 """
 import pytest
 import xarray
-
 from ncdata.netcdf4 import from_nc4, to_nc4
 from ncdata.threadlock_sharing import lockshare_context
 from ncdata.utils import dataset_differences
 from ncdata.xarray import from_xarray, to_xarray
+
 from tests.data_testcase_schemas import (
     BAD_LOADSAVE_TESTCASES,
     session_testdir,
diff --git a/tests/integration/test_zarr_to_iris.py b/tests/integration/test_zarr_to_iris.py
new file mode 100644
index 00000000..5b8dc33b
--- /dev/null
+++ b/tests/integration/test_zarr_to_iris.py
@@ -0,0 +1,111 @@
+"""Test conversion of remote and local Zarr store to iris Cube."""
+
+from importlib.resources import files as importlib_files
+from pathlib import Path
+
+import fsspec
+import iris
+import pytest
+import xarray as xr
+from ncdata.iris_xarray import cubes_from_xarray as conversion_func
+
+
+def _return_kwargs():
+    time_coder = xr.coders.CFDatetimeCoder(use_cftime=True)
+    return {
+        "consolidated": True,
+        "decode_times": time_coder,
+        "engine": "zarr",
+        "chunks": {},
+        "backend_kwargs": {},
+    }
+
+
+def _run_checks(cube):
+    """Run some standard checks."""
+    assert cube.var_name == "q"
+    assert cube.standard_name == "specific_humidity"
+    assert cube.long_name is None
+    coords = cube.coords()
+    coord_names = [coord.standard_name for coord in coords]
+    assert "longitude" in coord_names
+    assert "latitude" in coord_names
+
+
+def test_load_zarr2_local():
+    """Test loading a Zarr2 store from local FS."""
+    zarr_path = (
+        Path(importlib_files("tests"))
+        / "testdata"
+        / "zarr-sample-data"
+        / "example_field_0.zarr2"
+    )
+
+    xr_kwargs = _return_kwargs()
+    zarr_xr = xr.open_dataset(zarr_path, **xr_kwargs)
+
+    cubes = conversion_func(zarr_xr)
+
+    assert len(cubes) == 1
+    cube = cubes[0]
+    _run_checks(cube)
+
+
+def test_load_zarr3_local():
+    """Test loading a Zarr3 store from local FS."""
+    zarr_path = (
+        Path(importlib_files("tests"))
+        / "testdata"
+        / "zarr-sample-data"
+        / "example_field_0.zarr3"
+    )
+
+    xr_kwargs = _return_kwargs()
+    zarr_xr = xr.open_dataset(zarr_path, **xr_kwargs)
+
+    cubes = conversion_func(zarr_xr)
+
+    assert len(cubes) == 1
+    cube = cubes[0]
+    _run_checks(cube)
+
+
+def _is_url_ok(url):
+    fs = fsspec.filesystem("http")
+    valid_zarr = True
+    try:
+        fs.open(str(url) + "/zarr.json", "rb")  # Zarr3
+    except Exception:  # noqa: BLE001
+        try:
+            fs.open(str(url) + "/.zmetadata", "rb")  # Zarr2
+        except Exception:  # noqa: BLE001
+            valid_zarr = False
+
+    return valid_zarr
+
+
+S3_TEST_PATH = (
+    "https://uor-aces-o.s3-ext.jc.rl.ac.uk/"
+    "esmvaltool-zarr/pr_Amon_CNRM-ESM2-1_02Kpd-11_r1i1p2f2_gr_200601-220112.zarr3"
+)
+_S3_accessible = _is_url_ok(S3_TEST_PATH)
+
+
+@pytest.mark.skipif(not _S3_accessible, reason="S3 url not accessible")
+def test_load_remote_zarr():
+    """Test loading a remote Zarr store.
+
+    This is a ~250MB compressed Zarr in an S3 bucket.
+    Conversion is done fully lazily, by passing chunks={}
+    to Xarray loader. Test takes ~3-4s and needs ~400MB res mem.
+    """
+    zarr_path = S3_TEST_PATH
+
+    xr_kwargs = _return_kwargs()
+    zarr_xr = xr.open_dataset(zarr_path, **xr_kwargs)
+
+    cubes = conversion_func(zarr_xr)
+
+    assert isinstance(cubes, iris.cube.CubeList)
+    assert len(cubes) == 1
+    assert cubes[0].has_lazy_data()
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr2/.zattrs b/tests/testdata/zarr-sample-data/example_field_0.zarr2/.zattrs
new file mode 100644
index 00000000..bb815dea
--- /dev/null
+++ b/tests/testdata/zarr-sample-data/example_field_0.zarr2/.zattrs
@@ -0,0 +1,3 @@
+{
+    "Conventions": "CF-1.12"
+}
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr2/.zgroup b/tests/testdata/zarr-sample-data/example_field_0.zarr2/.zgroup
new file mode 100644
index 00000000..3f3fad2d
--- /dev/null
+++ b/tests/testdata/zarr-sample-data/example_field_0.zarr2/.zgroup
@@ -0,0 +1,3 @@
+{
+    "zarr_format": 2
+}
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr2/.zmetadata b/tests/testdata/zarr-sample-data/example_field_0.zarr2/.zmetadata
new file mode 100644
index 00000000..ab417b34
--- /dev/null
+++ b/tests/testdata/zarr-sample-data/example_field_0.zarr2/.zmetadata
@@ -0,0 +1,171 @@
+{
+    "metadata": {
+        ".zattrs": {
+            "Conventions": "CF-1.12"
+        },
+        ".zgroup": {
+            "zarr_format": 2
+        },
+        "lat/.zarray": {
+            "chunks": [
+                5
+            ],
+            "compressor": {
+                "blocksize": 0,
+                "clevel": 5,
+                "cname": "lz4",
+                "id": "blosc",
+                "shuffle": 1
+            },
+            "dtype": "<f8",
+            "fill_value": "NaN",
+            "filters": null,
+            "order": "C",
+            "shape": [
+                5
+            ],
+            "zarr_format": 2
+        },
+        "lat/.zattrs": {
+            "_ARRAY_DIMENSIONS": [
+                "lat"
+            ],
+            "bounds": "lat_bnds",
+            "standard_name": "latitude",
+            "units": "degrees_north"
+        },
+        "lat_bnds/.zarray": {
+            "chunks": [
+                3,
+                2
+            ],
+            "compressor": {
+                "blocksize": 0,
+                "clevel": 5,
+                "cname": "lz4",
+                "id": "blosc",
+                "shuffle": 1
+            },
+            "dtype": "<f8",
+            "fill_value": "NaN",
+            "filters": null,
+            "order": "C",
+            "shape": [
+                5,
+                2
+            ],
+            "zarr_format": 2
+        },
+        "lat_bnds/.zattrs": {
+            "_ARRAY_DIMENSIONS": [
+                "lat",
+                "bounds2"
+            ]
+        },
+        "lon/.zarray": {
+            "chunks": [
+                8
+            ],
+            "compressor": {
+                "blocksize": 0,
+                "clevel": 5,
+                "cname": "lz4",
+                "id": "blosc",
+                "shuffle": 1
+            },
+            "dtype": "<f8",
+            "fill_value": "NaN",
+            "filters": null,
+            "order": "C",
+            "shape": [
+                8
+            ],
+            "zarr_format": 2
+        },
+        "lon/.zattrs": {
+            "_ARRAY_DIMENSIONS": [
+                "lon"
+            ],
+            "bounds": "lon_bnds",
+            "standard_name": "longitude",
+            "units": "degrees_east"
+        },
+        "lon_bnds/.zarray": {
+            "chunks": [
+                4,
+                2
+            ],
+            "compressor": {
+                "blocksize": 0,
+                "clevel": 5,
+                "cname": "lz4",
+                "id": "blosc",
+                "shuffle": 1
+            },
+            "dtype": "<f8",
+            "fill_value": "NaN",
+            "filters": null,
+            "order": "C",
+            "shape": [
+                8,
+                2
+            ],
+            "zarr_format": 2
+        },
+        "lon_bnds/.zattrs": {
+            "_ARRAY_DIMENSIONS": [
+                "lon",
+                "bounds2"
+            ]
+        },
+        "q/.zarray": {
+            "chunks": [
+                3,
+                4
+            ],
+            "compressor": {
+                "blocksize": 0,
+                "clevel": 5,
+                "cname": "lz4",
+                "id": "blosc",
+                "shuffle": 1
+            },
+            "dtype": "<f8",
+            "fill_value": "NaN",
+            "filters": null,
+            "order": "C",
+            "shape": [
+                5,
+                8
+            ],
+            "zarr_format": 2
+        },
+        "q/.zattrs": {
+            "_ARRAY_DIMENSIONS": [
+                "lat",
+                "lon"
+            ],
+            "cell_methods": "area: mean",
+            "coordinates": "time",
+            "project": "research",
+            "standard_name": "specific_humidity",
+            "units": "1"
+        },
+        "time/.zarray": {
+            "chunks": [],
+            "compressor": null,
+            "dtype": "<f8",
+            "fill_value": "NaN",
+            "filters": null,
+            "order": "C",
+            "shape": [],
+            "zarr_format": 2
+        },
+        "time/.zattrs": {
+            "_ARRAY_DIMENSIONS": [],
+            "standard_name": "time",
+            "units": "days since 2018-12-01"
+        }
+    },
+    "zarr_consolidated_format": 1
+}
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr2/lat/.zarray b/tests/testdata/zarr-sample-data/example_field_0.zarr2/lat/.zarray
new file mode 100644
index 00000000..5e9fb9d2
--- /dev/null
+++ b/tests/testdata/zarr-sample-data/example_field_0.zarr2/lat/.zarray
@@ -0,0 +1,20 @@
+{
+    "chunks": [
+        5
+    ],
+    "compressor": {
+        "blocksize": 0,
+        "clevel": 5,
+        "cname": "lz4",
+        "id": "blosc",
+        "shuffle": 1
+    },
+    "dtype": "<f8",
+    "fill_value": "NaN",
+    "filters": null,
+    "order": "C",
+    "shape": [
+        5
+    ],
+    "zarr_format": 2
+}
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr2/lat/.zattrs b/tests/testdata/zarr-sample-data/example_field_0.zarr2/lat/.zattrs
new file mode 100644
index 00000000..3b8fe222
--- /dev/null
+++ b/tests/testdata/zarr-sample-data/example_field_0.zarr2/lat/.zattrs
@@ -0,0 +1,8 @@
+{
+    "_ARRAY_DIMENSIONS": [
+        "lat"
+    ],
+    "bounds": "lat_bnds",
+    "standard_name": "latitude",
+    "units": "degrees_north"
+}
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr2/lat/0 b/tests/testdata/zarr-sample-data/example_field_0.zarr2/lat/0
new file mode 100644
index 00000000..c0868d51
Binary files /dev/null and b/tests/testdata/zarr-sample-data/example_field_0.zarr2/lat/0 differ
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr2/lat_bnds/.zarray b/tests/testdata/zarr-sample-data/example_field_0.zarr2/lat_bnds/.zarray
new file mode 100644
index 00000000..3fa1dfac
--- /dev/null
+++ b/tests/testdata/zarr-sample-data/example_field_0.zarr2/lat_bnds/.zarray
@@ -0,0 +1,22 @@
+{
+    "chunks": [
+        3,
+        2
+    ],
+    "compressor": {
+        "blocksize": 0,
+        "clevel": 5,
+        "cname": "lz4",
+        "id": "blosc",
+        "shuffle": 1
+    },
+    "dtype": "<f8",
+    "fill_value": "NaN",
+    "filters": null,
+    "order": "C",
+    "shape": [
+        5,
+        2
+    ],
+    "zarr_format": 2
+}
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr2/lat_bnds/.zattrs b/tests/testdata/zarr-sample-data/example_field_0.zarr2/lat_bnds/.zattrs
new file mode 100644
index 00000000..c29a67a8
--- /dev/null
+++ b/tests/testdata/zarr-sample-data/example_field_0.zarr2/lat_bnds/.zattrs
@@ -0,0 +1,6 @@
+{
+    "_ARRAY_DIMENSIONS": [
+        "lat",
+        "bounds2"
+    ]
+}
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr2/lat_bnds/0.0 b/tests/testdata/zarr-sample-data/example_field_0.zarr2/lat_bnds/0.0
new file mode 100644
index 00000000..035e5d54
Binary files /dev/null and b/tests/testdata/zarr-sample-data/example_field_0.zarr2/lat_bnds/0.0 differ
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr2/lat_bnds/1.0 b/tests/testdata/zarr-sample-data/example_field_0.zarr2/lat_bnds/1.0
new file mode 100644
index 00000000..3b45c0ed
Binary files /dev/null and b/tests/testdata/zarr-sample-data/example_field_0.zarr2/lat_bnds/1.0 differ
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr2/lon/.zarray b/tests/testdata/zarr-sample-data/example_field_0.zarr2/lon/.zarray
new file mode 100644
index 00000000..79942880
--- /dev/null
+++ b/tests/testdata/zarr-sample-data/example_field_0.zarr2/lon/.zarray
@@ -0,0 +1,20 @@
+{
+    "chunks": [
+        8
+    ],
+    "compressor": {
+        "blocksize": 0,
+        "clevel": 5,
+        "cname": "lz4",
+        "id": "blosc",
+        "shuffle": 1
+    },
+    "dtype": "<f8",
+    "fill_value": "NaN",
+    "filters": null,
+    "order": "C",
+    "shape": [
+        8
+    ],
+    "zarr_format": 2
+}
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr2/lon/.zattrs b/tests/testdata/zarr-sample-data/example_field_0.zarr2/lon/.zattrs
new file mode 100644
index 00000000..e48ec815
--- /dev/null
+++ b/tests/testdata/zarr-sample-data/example_field_0.zarr2/lon/.zattrs
@@ -0,0 +1,8 @@
+{
+    "_ARRAY_DIMENSIONS": [
+        "lon"
+    ],
+    "bounds": "lon_bnds",
+    "standard_name": "longitude",
+    "units": "degrees_east"
+}
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr2/lon/0 b/tests/testdata/zarr-sample-data/example_field_0.zarr2/lon/0
new file mode 100644
index 00000000..ae6aaf4e
Binary files /dev/null and b/tests/testdata/zarr-sample-data/example_field_0.zarr2/lon/0 differ
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr2/lon_bnds/.zarray b/tests/testdata/zarr-sample-data/example_field_0.zarr2/lon_bnds/.zarray
new file mode 100644
index 00000000..fe247da4
--- /dev/null
+++ b/tests/testdata/zarr-sample-data/example_field_0.zarr2/lon_bnds/.zarray
@@ -0,0 +1,22 @@
+{
+    "chunks": [
+        4,
+        2
+    ],
+    "compressor": {
+        "blocksize": 0,
+        "clevel": 5,
+        "cname": "lz4",
+        "id": "blosc",
+        "shuffle": 1
+    },
+    "dtype": "<f8",
+    "fill_value": "NaN",
+    "filters": null,
+    "order": "C",
+    "shape": [
+        8,
+        2
+    ],
+    "zarr_format": 2
+}
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr2/lon_bnds/.zattrs b/tests/testdata/zarr-sample-data/example_field_0.zarr2/lon_bnds/.zattrs
new file mode 100644
index 00000000..2697f89a
--- /dev/null
+++ b/tests/testdata/zarr-sample-data/example_field_0.zarr2/lon_bnds/.zattrs
@@ -0,0 +1,6 @@
+{
+    "_ARRAY_DIMENSIONS": [
+        "lon",
+        "bounds2"
+    ]
+}
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr2/lon_bnds/0.0 b/tests/testdata/zarr-sample-data/example_field_0.zarr2/lon_bnds/0.0
new file mode 100644
index 00000000..ccb3b55e
Binary files /dev/null and b/tests/testdata/zarr-sample-data/example_field_0.zarr2/lon_bnds/0.0 differ
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr2/lon_bnds/1.0 b/tests/testdata/zarr-sample-data/example_field_0.zarr2/lon_bnds/1.0
new file mode 100644
index 00000000..4461e510
Binary files /dev/null and b/tests/testdata/zarr-sample-data/example_field_0.zarr2/lon_bnds/1.0 differ
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr2/q/.zarray b/tests/testdata/zarr-sample-data/example_field_0.zarr2/q/.zarray
new file mode 100644
index 00000000..d03af818
--- /dev/null
+++ b/tests/testdata/zarr-sample-data/example_field_0.zarr2/q/.zarray
@@ -0,0 +1,22 @@
+{
+    "chunks": [
+        3,
+        4
+    ],
+    "compressor": {
+        "blocksize": 0,
+        "clevel": 5,
+        "cname": "lz4",
+        "id": "blosc",
+        "shuffle": 1
+    },
+    "dtype": "<f8",
+    "fill_value": "NaN",
+    "filters": null,
+    "order": "C",
+    "shape": [
+        5,
+        8
+    ],
+    "zarr_format": 2
+}
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr2/q/.zattrs b/tests/testdata/zarr-sample-data/example_field_0.zarr2/q/.zattrs
new file mode 100644
index 00000000..93d75d93
--- /dev/null
+++ b/tests/testdata/zarr-sample-data/example_field_0.zarr2/q/.zattrs
@@ -0,0 +1,11 @@
+{
+    "_ARRAY_DIMENSIONS": [
+        "lat",
+        "lon"
+    ],
+    "cell_methods": "area: mean",
+    "coordinates": "time",
+    "project": "research",
+    "standard_name": "specific_humidity",
+    "units": "1"
+}
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr2/q/0.0 b/tests/testdata/zarr-sample-data/example_field_0.zarr2/q/0.0
new file mode 100644
index 00000000..97c4de30
Binary files /dev/null and b/tests/testdata/zarr-sample-data/example_field_0.zarr2/q/0.0 differ
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr2/q/0.1 b/tests/testdata/zarr-sample-data/example_field_0.zarr2/q/0.1
new file mode 100644
index 00000000..c5059ee3
Binary files /dev/null and b/tests/testdata/zarr-sample-data/example_field_0.zarr2/q/0.1 differ
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr2/q/1.0 b/tests/testdata/zarr-sample-data/example_field_0.zarr2/q/1.0
new file mode 100644
index 00000000..b71f5dc5
Binary files /dev/null and b/tests/testdata/zarr-sample-data/example_field_0.zarr2/q/1.0 differ
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr2/q/1.1 b/tests/testdata/zarr-sample-data/example_field_0.zarr2/q/1.1
new file mode 100644
index 00000000..377eb07c
Binary files /dev/null and b/tests/testdata/zarr-sample-data/example_field_0.zarr2/q/1.1 differ
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr2/time/.zarray b/tests/testdata/zarr-sample-data/example_field_0.zarr2/time/.zarray
new file mode 100644
index 00000000..bd9b8f3e
--- /dev/null
+++ b/tests/testdata/zarr-sample-data/example_field_0.zarr2/time/.zarray
@@ -0,0 +1,10 @@
+{
+    "chunks": [],
+    "compressor": null,
+    "dtype": "<f8",
+    "fill_value": "NaN",
+    "filters": null,
+    "order": "C",
+    "shape": [],
+    "zarr_format": 2
+}
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr2/time/.zattrs b/tests/testdata/zarr-sample-data/example_field_0.zarr2/time/.zattrs
new file mode 100644
index 00000000..60040cdf
--- /dev/null
+++ b/tests/testdata/zarr-sample-data/example_field_0.zarr2/time/.zattrs
@@ -0,0 +1,5 @@
+{
+    "_ARRAY_DIMENSIONS": [],
+    "standard_name": "time",
+    "units": "days since 2018-12-01"
+}
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr2/time/0 b/tests/testdata/zarr-sample-data/example_field_0.zarr2/time/0
new file mode 100644
index 00000000..6d734cbd
Binary files /dev/null and b/tests/testdata/zarr-sample-data/example_field_0.zarr2/time/0 differ
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr3/lat/c/0 b/tests/testdata/zarr-sample-data/example_field_0.zarr3/lat/c/0
new file mode 100644
index 00000000..7ef1fc24
Binary files /dev/null and b/tests/testdata/zarr-sample-data/example_field_0.zarr3/lat/c/0 differ
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr3/lat/zarr.json b/tests/testdata/zarr-sample-data/example_field_0.zarr3/lat/zarr.json
new file mode 100644
index 00000000..42da08d9
--- /dev/null
+++ b/tests/testdata/zarr-sample-data/example_field_0.zarr3/lat/zarr.json
@@ -0,0 +1,47 @@
+{
+  "shape": [
+    5
+  ],
+  "data_type": "float64",
+  "chunk_grid": {
+    "name": "regular",
+    "configuration": {
+      "chunk_shape": [
+        5
+      ]
+    }
+  },
+  "chunk_key_encoding": {
+    "name": "default",
+    "configuration": {
+      "separator": "/"
+    }
+  },
+  "fill_value": 0.0,
+  "codecs": [
+    {
+      "name": "bytes",
+      "configuration": {
+        "endian": "little"
+      }
+    },
+    {
+      "name": "zstd",
+      "configuration": {
+        "level": 0,
+        "checksum": false
+      }
+    }
+  ],
+  "attributes": {
+    "units": "degrees_north",
+    "standard_name": "latitude",
+    "bounds": "lat_bnds",
+  },
+  "dimension_names": [
+    "lat"
+  ],
+  "zarr_format": 3,
+  "node_type": "array",
+  "storage_transformers": []
+}
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr3/lat_bnds/c/0/0 b/tests/testdata/zarr-sample-data/example_field_0.zarr3/lat_bnds/c/0/0
new file mode 100644
index 00000000..a2317cbf
Binary files /dev/null and b/tests/testdata/zarr-sample-data/example_field_0.zarr3/lat_bnds/c/0/0 differ
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr3/lat_bnds/zarr.json b/tests/testdata/zarr-sample-data/example_field_0.zarr3/lat_bnds/zarr.json
new file mode 100644
index 00000000..e1bd7c01
--- /dev/null
+++ b/tests/testdata/zarr-sample-data/example_field_0.zarr3/lat_bnds/zarr.json
@@ -0,0 +1,47 @@
+{
+  "shape": [
+    5,
+    2
+  ],
+  "data_type": "float64",
+  "chunk_grid": {
+    "name": "regular",
+    "configuration": {
+      "chunk_shape": [
+        5,
+        2
+      ]
+    }
+  },
+  "chunk_key_encoding": {
+    "name": "default",
+    "configuration": {
+      "separator": "/"
+    }
+  },
+  "fill_value": 0.0,
+  "codecs": [
+    {
+      "name": "bytes",
+      "configuration": {
+        "endian": "little"
+      }
+    },
+    {
+      "name": "zstd",
+      "configuration": {
+        "level": 0,
+        "checksum": false
+      }
+    }
+  ],
+  "attributes": {
+  },
+  "dimension_names": [
+    "lat",
+    "bounds2"
+  ],
+  "zarr_format": 3,
+  "node_type": "array",
+  "storage_transformers": []
+}
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr3/lon/c/0 b/tests/testdata/zarr-sample-data/example_field_0.zarr3/lon/c/0
new file mode 100644
index 00000000..1509ee1e
Binary files /dev/null and b/tests/testdata/zarr-sample-data/example_field_0.zarr3/lon/c/0 differ
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr3/lon/zarr.json b/tests/testdata/zarr-sample-data/example_field_0.zarr3/lon/zarr.json
new file mode 100644
index 00000000..42f96572
--- /dev/null
+++ b/tests/testdata/zarr-sample-data/example_field_0.zarr3/lon/zarr.json
@@ -0,0 +1,47 @@
+{
+  "shape": [
+    8
+  ],
+  "data_type": "float64",
+  "chunk_grid": {
+    "name": "regular",
+    "configuration": {
+      "chunk_shape": [
+        8
+      ]
+    }
+  },
+  "chunk_key_encoding": {
+    "name": "default",
+    "configuration": {
+      "separator": "/"
+    }
+  },
+  "fill_value": 0.0,
+  "codecs": [
+    {
+      "name": "bytes",
+      "configuration": {
+        "endian": "little"
+      }
+    },
+    {
+      "name": "zstd",
+      "configuration": {
+        "level": 0,
+        "checksum": false
+      }
+    }
+  ],
+  "attributes": {
+    "units": "degrees_east",
+    "standard_name": "longitude",
+    "bounds": "lon_bnds",
+  },
+  "dimension_names": [
+    "lon"
+  ],
+  "zarr_format": 3,
+  "node_type": "array",
+  "storage_transformers": []
+}
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr3/lon_bnds/c/0/0 b/tests/testdata/zarr-sample-data/example_field_0.zarr3/lon_bnds/c/0/0
new file mode 100644
index 00000000..3a05139f
Binary files /dev/null and b/tests/testdata/zarr-sample-data/example_field_0.zarr3/lon_bnds/c/0/0 differ
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr3/lon_bnds/zarr.json b/tests/testdata/zarr-sample-data/example_field_0.zarr3/lon_bnds/zarr.json
new file mode 100644
index 00000000..ed74f33e
--- /dev/null
+++ b/tests/testdata/zarr-sample-data/example_field_0.zarr3/lon_bnds/zarr.json
@@ -0,0 +1,47 @@
+{
+  "shape": [
+    8,
+    2
+  ],
+  "data_type": "float64",
+  "chunk_grid": {
+    "name": "regular",
+    "configuration": {
+      "chunk_shape": [
+        8,
+        2
+      ]
+    }
+  },
+  "chunk_key_encoding": {
+    "name": "default",
+    "configuration": {
+      "separator": "/"
+    }
+  },
+  "fill_value": 0.0,
+  "codecs": [
+    {
+      "name": "bytes",
+      "configuration": {
+        "endian": "little"
+      }
+    },
+    {
+      "name": "zstd",
+      "configuration": {
+        "level": 0,
+        "checksum": false
+      }
+    }
+  ],
+  "attributes": {
+  },
+  "dimension_names": [
+    "lon",
+    "bounds2"
+  ],
+  "zarr_format": 3,
+  "node_type": "array",
+  "storage_transformers": []
+}
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr3/q/c/0/0 b/tests/testdata/zarr-sample-data/example_field_0.zarr3/q/c/0/0
new file mode 100644
index 00000000..924dc504
Binary files /dev/null and b/tests/testdata/zarr-sample-data/example_field_0.zarr3/q/c/0/0 differ
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr3/q/zarr.json b/tests/testdata/zarr-sample-data/example_field_0.zarr3/q/zarr.json
new file mode 100644
index 00000000..7b895a0e
--- /dev/null
+++ b/tests/testdata/zarr-sample-data/example_field_0.zarr3/q/zarr.json
@@ -0,0 +1,52 @@
+{
+  "shape": [
+    5,
+    8
+  ],
+  "data_type": "float64",
+  "chunk_grid": {
+    "name": "regular",
+    "configuration": {
+      "chunk_shape": [
+        5,
+        8
+      ]
+    }
+  },
+  "chunk_key_encoding": {
+    "name": "default",
+    "configuration": {
+      "separator": "/"
+    }
+  },
+  "fill_value": 0.0,
+  "codecs": [
+    {
+      "name": "bytes",
+      "configuration": {
+        "endian": "little"
+      }
+    },
+    {
+      "name": "zstd",
+      "configuration": {
+        "level": 0,
+        "checksum": false
+      }
+    }
+  ],
+  "attributes": {
+    "project": "research",
+    "standard_name": "specific_humidity",
+    "units": "1",
+    "cell_methods": "area: mean",
+    "coordinates": "time",
+  },
+  "dimension_names": [
+    "lat",
+    "lon"
+  ],
+  "zarr_format": 3,
+  "node_type": "array",
+  "storage_transformers": []
+}
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr3/time/c b/tests/testdata/zarr-sample-data/example_field_0.zarr3/time/c
new file mode 100644
index 00000000..16e658b1
Binary files /dev/null and b/tests/testdata/zarr-sample-data/example_field_0.zarr3/time/c differ
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr3/time/zarr.json b/tests/testdata/zarr-sample-data/example_field_0.zarr3/time/zarr.json
new file mode 100644
index 00000000..32ebdf51
--- /dev/null
+++ b/tests/testdata/zarr-sample-data/example_field_0.zarr3/time/zarr.json
@@ -0,0 +1,39 @@
+{
+  "shape": [],
+  "data_type": "float64",
+  "chunk_grid": {
+    "name": "regular",
+    "configuration": {
+      "chunk_shape": []
+    }
+  },
+  "chunk_key_encoding": {
+    "name": "default",
+    "configuration": {
+      "separator": "/"
+    }
+  },
+  "fill_value": 0.0,
+  "codecs": [
+    {
+      "name": "bytes",
+      "configuration": {
+        "endian": "little"
+      }
+    },
+    {
+      "name": "zstd",
+      "configuration": {
+        "level": 0,
+        "checksum": false
+      }
+    }
+  ],
+  "attributes": {
+    "standard_name": "time",
+    "units": "days since 2018-12-01"
+  },
+  "zarr_format": 3,
+  "node_type": "array",
+  "storage_transformers": []
+}
diff --git a/tests/testdata/zarr-sample-data/example_field_0.zarr3/zarr.json b/tests/testdata/zarr-sample-data/example_field_0.zarr3/zarr.json
new file mode 100644
index 00000000..54ac972c
--- /dev/null
+++ b/tests/testdata/zarr-sample-data/example_field_0.zarr3/zarr.json
@@ -0,0 +1,292 @@
+{
+  "attributes": {
+    "Conventions": "CF-1.12"
+  },
+  "zarr_format": 3,
+  "consolidated_metadata": {
+    "kind": "inline",
+    "must_understand": false,
+    "metadata": {
+      "lon": {
+        "shape": [
+          8
+        ],
+        "data_type": "float64",
+        "chunk_grid": {
+          "name": "regular",
+          "configuration": {
+            "chunk_shape": [
+              8
+            ]
+          }
+        },
+        "chunk_key_encoding": {
+          "name": "default",
+          "configuration": {
+            "separator": "/"
+          }
+        },
+        "fill_value": 0.0,
+        "codecs": [
+          {
+            "name": "bytes",
+            "configuration": {
+              "endian": "little"
+            }
+          },
+          {
+            "name": "zstd",
+            "configuration": {
+              "level": 0,
+              "checksum": false
+            }
+          }
+        ],
+        "attributes": {
+          "units": "degrees_east",
+          "standard_name": "longitude",
+          "bounds": "lon_bnds"
+        },
+        "dimension_names": [
+          "lon"
+        ],
+        "zarr_format": 3,
+        "node_type": "array",
+        "storage_transformers": []
+      },
+      "lat_bnds": {
+        "shape": [
+          5,
+          2
+        ],
+        "data_type": "float64",
+        "chunk_grid": {
+          "name": "regular",
+          "configuration": {
+            "chunk_shape": [
+              5,
+              2
+            ]
+          }
+        },
+        "chunk_key_encoding": {
+          "name": "default",
+          "configuration": {
+            "separator": "/"
+          }
+        },
+        "fill_value": 0.0,
+        "codecs": [
+          {
+            "name": "bytes",
+            "configuration": {
+              "endian": "little"
+            }
+          },
+          {
+            "name": "zstd",
+            "configuration": {
+              "level": 0,
+              "checksum": false
+            }
+          }
+        ],
+        "attributes": {
+        },
+        "dimension_names": [
+          "lat",
+          "bounds2"
+        ],
+        "zarr_format": 3,
+        "node_type": "array",
+        "storage_transformers": []
+      },
+      "lat": {
+        "shape": [
+          5
+        ],
+        "data_type": "float64",
+        "chunk_grid": {
+          "name": "regular",
+          "configuration": {
+            "chunk_shape": [
+              5
+            ]
+          }
+        },
+        "chunk_key_encoding": {
+          "name": "default",
+          "configuration": {
+            "separator": "/"
+          }
+        },
+        "fill_value": 0.0,
+        "codecs": [
+          {
+            "name": "bytes",
+            "configuration": {
+              "endian": "little"
+            }
+          },
+          {
+            "name": "zstd",
+            "configuration": {
+              "level": 0,
+              "checksum": false
+            }
+          }
+        ],
+        "attributes": {
+          "units": "degrees_north",
+          "standard_name": "latitude",
+          "bounds": "lat_bnds"
+        },
+        "dimension_names": [
+          "lat"
+        ],
+        "zarr_format": 3,
+        "node_type": "array",
+        "storage_transformers": []
+      },
+      "time": {
+        "shape": [],
+        "data_type": "float64",
+        "chunk_grid": {
+          "name": "regular",
+          "configuration": {
+            "chunk_shape": []
+          }
+        },
+        "chunk_key_encoding": {
+          "name": "default",
+          "configuration": {
+            "separator": "/"
+          }
+        },
+        "fill_value": 0.0,
+        "codecs": [
+          {
+            "name": "bytes",
+            "configuration": {
+              "endian": "little"
+            }
+          },
+          {
+            "name": "zstd",
+            "configuration": {
+              "level": 0,
+              "checksum": false
+            }
+          }
+        ],
+        "attributes": {
+          "standard_name": "time",
+          "units": "days since 2018-12-01"
+        },
+        "zarr_format": 3,
+        "node_type": "array",
+        "storage_transformers": []
+      },
+      "lon_bnds": {
+        "shape": [
+          8,
+          2
+        ],
+        "data_type": "float64",
+        "chunk_grid": {
+          "name": "regular",
+          "configuration": {
+            "chunk_shape": [
+              8,
+              2
+            ]
+          }
+        },
+        "chunk_key_encoding": {
+          "name": "default",
+          "configuration": {
+            "separator": "/"
+          }
+        },
+        "fill_value": 0.0,
+        "codecs": [
+          {
+            "name": "bytes",
+            "configuration": {
+              "endian": "little"
+            }
+          },
+          {
+            "name": "zstd",
+            "configuration": {
+              "level": 0,
+              "checksum": false
+            }
+          }
+        ],
+        "attributes": {
+        },
+        "dimension_names": [
+          "lon",
+          "bounds2"
+        ],
+        "zarr_format": 3,
+        "node_type": "array",
+        "storage_transformers": []
+      },
+      "q": {
+        "shape": [
+          5,
+          8
+        ],
+        "data_type": "float64",
+        "chunk_grid": {
+          "name": "regular",
+          "configuration": {
+            "chunk_shape": [
+              5,
+              8
+            ]
+          }
+        },
+        "chunk_key_encoding": {
+          "name": "default",
+          "configuration": {
+            "separator": "/"
+          }
+        },
+        "fill_value": 0.0,
+        "codecs": [
+          {
+            "name": "bytes",
+            "configuration": {
+              "endian": "little"
+            }
+          },
+          {
+            "name": "zstd",
+            "configuration": {
+              "level": 0,
+              "checksum": false
+            }
+          }
+        ],
+        "attributes": {
+          "project": "research",
+          "standard_name": "specific_humidity",
+          "units": "1",
+          "cell_methods": "area: mean",
+          "coordinates": "time"
+        },
+        "dimension_names": [
+          "lat",
+          "lon"
+        ],
+        "zarr_format": 3,
+        "node_type": "array",
+        "storage_transformers": []
+      }
+    }
+  },
+  "node_type": "group"
+}
diff --git a/tests/unit/core/test_AttributeAccessMixin.py b/tests/unit/core/test_AttributeAccessMixin.py
index 803b6b15..615ea92e 100644
--- a/tests/unit/core/test_AttributeAccessMixin.py
+++ b/tests/unit/core/test_AttributeAccessMixin.py
@@ -6,7 +6,6 @@
 """
 import numpy as np
 import pytest
-
 from ncdata import NcData, NcVariable
 
 
diff --git a/tests/unit/core/test_AttrvalsDict.py b/tests/unit/core/test_AttrvalsDict.py
index d15ad262..faca9325 100644
--- a/tests/unit/core/test_AttrvalsDict.py
+++ b/tests/unit/core/test_AttrvalsDict.py
@@ -3,7 +3,6 @@
 
 import numpy as np
 import pytest
-
 from ncdata import NcAttribute, NcVariable
 
 
diff --git a/tests/unit/core/test_NameMap.py b/tests/unit/core/test_NameMap.py
index 72650ce5..5538ecf0 100644
--- a/tests/unit/core/test_NameMap.py
+++ b/tests/unit/core/test_NameMap.py
@@ -4,7 +4,6 @@
 from copy import deepcopy
 
 import pytest
-
 from ncdata import NameMap, NcAttribute
 
 
diff --git a/tests/unit/core/test_NcAttribute.py b/tests/unit/core/test_NcAttribute.py
index 26ef2e10..45895764 100644
--- a/tests/unit/core/test_NcAttribute.py
+++ b/tests/unit/core/test_NcAttribute.py
@@ -5,7 +5,6 @@
 """
 import numpy as np
 import pytest
-
 from ncdata import NcAttribute
 
 # Support for building testcases
diff --git a/tests/unit/core/test_NcDimension.py b/tests/unit/core/test_NcDimension.py
index 6af29e79..1ab98199 100644
--- a/tests/unit/core/test_NcDimension.py
+++ b/tests/unit/core/test_NcDimension.py
@@ -1,7 +1,6 @@
 """Tests for class :class:`ncdata.NcDimension`."""
 import numpy as np
 import pytest
-
 from ncdata import NcDimension
 
 
diff --git a/tests/unit/core/test_NcVariable.py b/tests/unit/core/test_NcVariable.py
index 7376d183..798d7c64 100644
--- a/tests/unit/core/test_NcVariable.py
+++ b/tests/unit/core/test_NcVariable.py
@@ -6,7 +6,6 @@
 import dask.array as da
 import numpy as np
 import pytest
-
 from ncdata import NcVariable
 from ncdata.utils import variable_differences
 
diff --git a/tests/unit/iris/test_from_iris.py b/tests/unit/iris/test_from_iris.py
index 8ce3555a..0e8c7421 100644
--- a/tests/unit/iris/test_from_iris.py
+++ b/tests/unit/iris/test_from_iris.py
@@ -15,8 +15,8 @@
 import pytest
 from iris.coords import DimCoord
 from iris.cube import Cube
-
 from ncdata.iris import from_iris
+
 from tests import MonitoredArray
 
 
diff --git a/tests/unit/iris/test_to_iris.py b/tests/unit/iris/test_to_iris.py
index 8170e804..e9067e1f 100644
--- a/tests/unit/iris/test_to_iris.py
+++ b/tests/unit/iris/test_to_iris.py
@@ -12,9 +12,9 @@
 import numpy as np
 from iris._constraints import NameConstraint
 from iris.cube import CubeList
-
 from ncdata import NcData, NcDimension, NcVariable
 from ncdata.iris import to_iris
+
 from tests import MonitoredArray
 
 
diff --git a/tests/unit/netcdf/test_from_nc4.py b/tests/unit/netcdf/test_from_nc4.py
index ea612912..1f5b8a1d 100644
--- a/tests/unit/netcdf/test_from_nc4.py
+++ b/tests/unit/netcdf/test_from_nc4.py
@@ -13,10 +13,10 @@
 import netCDF4 as nc
 import numpy as np
 import pytest
-
 from ncdata import NcData, NcDimension, NcVariable
 from ncdata.netcdf4 import from_nc4
 from ncdata.utils import dataset_differences
+
 from tests.data_testcase_schemas import make_testcase_dataset
 
 
diff --git a/tests/unit/netcdf/test_to_nc4.py b/tests/unit/netcdf/test_to_nc4.py
index 8f2934a2..1f6574e3 100644
--- a/tests/unit/netcdf/test_to_nc4.py
+++ b/tests/unit/netcdf/test_to_nc4.py
@@ -14,10 +14,10 @@
 import netCDF4 as nc
 import numpy as np
 import pytest
-
 from ncdata import NcData
 from ncdata.netcdf4 import from_nc4, to_nc4
 from ncdata.utils import dataset_differences
+
 from tests.data_testcase_schemas import make_testcase_dataset
 
 
diff --git a/tests/unit/utils/compare_nc_datasets/test_dataset_differences__additional.py b/tests/unit/utils/compare_nc_datasets/test_dataset_differences__additional.py
index 373c62d8..9f738958 100644
--- a/tests/unit/utils/compare_nc_datasets/test_dataset_differences__additional.py
+++ b/tests/unit/utils/compare_nc_datasets/test_dataset_differences__additional.py
@@ -12,12 +12,12 @@
 import netCDF4 as nc
 import numpy as np
 import pytest
-
 from ncdata.utils._compare_nc_datasets import (
     _attribute_differences,
     _namelist_differences,
     dataset_differences,
 )
+
 from tests.test_samplecode_cdlgen_comparablecdl import ncgen_from_cdl
 
 _simple_cdl = """
diff --git a/tests/unit/utils/compare_nc_datasets/test_dataset_differences__mainfunctions.py b/tests/unit/utils/compare_nc_datasets/test_dataset_differences__mainfunctions.py
index 4d3a3294..7c421b7f 100644
--- a/tests/unit/utils/compare_nc_datasets/test_dataset_differences__mainfunctions.py
+++ b/tests/unit/utils/compare_nc_datasets/test_dataset_differences__mainfunctions.py
@@ -8,7 +8,6 @@
 """
 import numpy as np
 import pytest
-
 from ncdata import NcAttribute, NcData, NcDimension, NcVariable
 from ncdata.utils import dataset_differences
 
diff --git a/tests/unit/utils/compare_nc_datasets/test_variable_differences.py b/tests/unit/utils/compare_nc_datasets/test_variable_differences.py
index 840d8ef8..ddb60110 100644
--- a/tests/unit/utils/compare_nc_datasets/test_variable_differences.py
+++ b/tests/unit/utils/compare_nc_datasets/test_variable_differences.py
@@ -1,7 +1,6 @@
 import dask.array as da
 import numpy as np
 import pytest
-
 from ncdata import NcVariable
 from ncdata.utils import variable_differences
 
diff --git a/tests/unit/utils/test_ncdata_copy.py b/tests/unit/utils/test_ncdata_copy.py
index 17a0cc6e..9d369109 100644
--- a/tests/unit/utils/test_ncdata_copy.py
+++ b/tests/unit/utils/test_ncdata_copy.py
@@ -4,7 +4,6 @@
 """
 import numpy as np
 import pytest
-
 from ncdata import NameMap, NcAttribute, NcData, NcDimension, NcVariable
 from ncdata.utils import dataset_differences, ncdata_copy
 
diff --git a/tests/unit/utils/test_save_errors.py b/tests/unit/utils/test_save_errors.py
index f9ad4c92..f5a508df 100644
--- a/tests/unit/utils/test_save_errors.py
+++ b/tests/unit/utils/test_save_errors.py
@@ -5,9 +5,9 @@
 
 import numpy as np
 import pytest
-
 from ncdata import NcData, NcDimension, NcVariable
 from ncdata.utils import save_errors
+
 from tests.unit.core.test_NcAttribute import attrvalue, datatype, structuretype
 
 _ = datatype, structuretype
diff --git a/tests/unit/xarray/test_from_xarray.py b/tests/unit/xarray/test_from_xarray.py
index 587c1983..f64255bd 100644
--- a/tests/unit/xarray/test_from_xarray.py
+++ b/tests/unit/xarray/test_from_xarray.py
@@ -14,8 +14,8 @@
 import numpy as np
 import pytest
 import xarray as xr
-
 from ncdata.xarray import from_xarray
+
 from tests import MonitoredArray
 from tests.data_testcase_schemas import make_testcase_dataset
 
diff --git a/tests/unit/xarray/test_to_xarray.py b/tests/unit/xarray/test_to_xarray.py
index f2e777f4..b91dd70d 100644
--- a/tests/unit/xarray/test_to_xarray.py
+++ b/tests/unit/xarray/test_to_xarray.py
@@ -11,9 +11,9 @@
 import dask.array as da
 import numpy as np
 import pytest
-
 from ncdata import NcData, NcDimension, NcVariable
 from ncdata.xarray import to_xarray
+
 from tests import MonitoredArray