diff --git a/.github/workflows/pytest.yml b/.github/workflows/pytest.yml
new file mode 100644
index 00000000..2b651393
--- /dev/null
+++ b/.github/workflows/pytest.yml
@@ -0,0 +1,36 @@
+name: pytest-dev
+
+on:
+  push:
+    branches:
+        - dev
+
+jobs:
+  pytest:
+    runs-on: ubuntu-latest
+    name: Sphinx docs to gh-pages
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Make conda environment
+        uses: mamba-org/setup-micromamba@v1
+        with:
+          micromamba-version: '1.5.1-0'
+          environment-file: requirements_dev.yml   
+          environment-name: earthdaily
+          cache-environment: true
+          post-cleanup: 'all'
+          init-shell: bash
+      - name: Installing the library
+        shell: bash -l {0}
+        run: |
+          pip install .
+      - name: tests and coverage
+        env:
+            EDS_CLIENT_ID: ${{ secrets.EDS_CLIENT_ID }}
+            EDS_AUTH_URL: ${{ secrets.EDS_AUTH_URL }}
+            EDS_SECRET: ${{ secrets.EDS_SECRET }} 
+            EDS_API_URL: ${{ secrets.EDS_API_URL }}
+        run: |
+          pytest -v tests --cov=earthdaily
\ No newline at end of file
diff --git a/.github/workflows/ruff.yaml b/.github/workflows/ruff.yaml
index b50dea9b..ae3b5353 100644
--- a/.github/workflows/ruff.yaml
+++ b/.github/workflows/ruff.yaml
@@ -21,7 +21,6 @@ jobs:
       with:
         src: "./earthdaily"
         args: format
-
     - uses: stefanzweifel/git-auto-commit-action@v5
       with:
-        commit_message: 'style fixes by ruff'
\ No newline at end of file
+        commit_message: 'ghactions/auto fix with ruff'
\ No newline at end of file
diff --git a/earthdaily/earthdatastore/cube_utils/_zonal.py b/earthdaily/earthdatastore/cube_utils/_zonal.py
index 9c86af05..0bcf0c43 100644
--- a/earthdaily/earthdatastore/cube_utils/_zonal.py
+++ b/earthdaily/earthdatastore/cube_utils/_zonal.py
@@ -59,6 +59,7 @@ def zonal_stats_numpy(
 
     feats, yx_pos = _rasterize(gdf, dataset, all_touched=all_touched)
     ds = []
+    features_idx = []
     for data_var in dataset.data_vars:
         tqdm_bar.set_description(data_var)
         dataset_var = dataset[data_var]
@@ -70,7 +71,7 @@ def zonal_stats_numpy(
             vals[t] = []
             mem_asset = dataset_var.isel(time=t).to_numpy()
             for i in range(gdf.shape[0]):
-                features.append(i)
+                features_idx.append(i)
                 if len(yx_pos) <= i + 1:
                     break
                 pos = np.asarray(yx_pos[i + 1])
diff --git a/tests/__init__.py b/tests/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/tests/tests_assetmapper.py b/tests/test_assetmapper.py
similarity index 97%
rename from tests/tests_assetmapper.py
rename to tests/test_assetmapper.py
index 58d97628..5a541174 100644
--- a/tests/tests_assetmapper.py
+++ b/tests/test_assetmapper.py
@@ -3,7 +3,7 @@
 from earthdaily.earthdatastore.cube_utils.asset_mapper import AssetMapper
 
 
-class TestZonalStats(unittest.TestCase):
+class TestAssetMapper(unittest.TestCase):
     def setUp(self):
         self.aM = AssetMapper()
 
diff --git a/tests/tests_zonalstats.py b/tests/test_zonalstats.py
similarity index 100%
rename from tests/tests_zonalstats.py
rename to tests/test_zonalstats.py