diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 0000000..aff2fed
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,60 @@
+name: "Testing"
+
+on:
+  push:
+    branches: [main, github-actions-test]
+    paths-ignore:
+      - "docs/**"
+      - "README.rst"
+      - "LICENSE.md"
+      - ".github/workflows/docs.yml"
+      - ".gitignore"
+
+  pull_request:
+    branches: [main]
+    paths-ignore:
+      - "docs/**"
+      - "README.rst"
+      - ".github/workflows/docs.yml"
+      - "LICENSE.md"
+      - ".gitignore"
+
+jobs:
+  build:
+    runs-on: ${{matrix.os}}
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+        python-version: [3.11]
+      fail-fast: false
+    env:
+      JUPYTER_PLATFORM_DIRS: 1
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Build using Python ${{matrix.python-version}}
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{matrix.python-version}}
+
+      - uses: actions/cache@v4
+        with:
+          path: ~/.cache/pip
+          key: ${{matrix.os}}-${{matrix.python-version}}-${{ hashFiles('pyproject.toml') }}
+
+      - name: install dependencies [pip]
+        run: |
+          pip install --upgrade pip setuptools wheel
+          pip install -e .[dev,all]
+
+      - name: unit testing for polpo [pytest]
+        run: |
+          pytest --cov-report term -m "not local" --cov=polpo ${{matrix.test-folder}}
+
+      - name: uploading code coverage [codecov]
+        if: ${{ matrix.test-folder == 'tests/tests_geomstats/' }}
+        uses: codecov/codecov-action@v5
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          flags: ${{ matrix.geomstats-backend }}
+          fail_ci_if_error: false
diff --git a/notebooks/how_to/load_server_data.ipynb b/notebooks/how_to/load_server_data.ipynb
index 70c1ce3..60ca070 100644
--- a/notebooks/how_to/load_server_data.ipynb
+++ b/notebooks/how_to/load_server_data.ipynb
@@ -90,7 +90,9 @@
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
    "version": "3.12.3"
-  }
+  },
+  "markers": ["local"]
+
  },
  "nbformat": 4,
  "nbformat_minor": 2
diff --git a/pyproject.toml b/pyproject.toml
index 47914db..8f8c29f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -30,6 +30,8 @@ doc = [
     "sphinx_gallery",
     "pydata-sphinx-theme",
 ]
+lint = ["ruff"]
+test = ["pytest", "pytest-cov", "coverage", "jupyter", "ipython"]
 dash = ["dash", "dash-bootstrap-components"]
 plot = ["plotly"]
 mri = ["nibabel", "scikit-image"]
@@ -48,6 +50,7 @@ dataframe = ["pandas"]
 ssh = ["paramiko", "scp"]
 preprocessing = ["polpo[mri,mesh,dataframe,ssh,point_cloud]"]
 hydra = ["hydra-core", "omegaconf"]
+dev = ["polpo[doc,lint,test]"]
 all = ["polpo[dash,plot,preprocessing,hydra]"]
 
 [project.urls]
@@ -74,4 +77,4 @@ convention = "numpy"
 "tests/*" = ["D"]
 
 [tool.pytest.ini_options]
-markers = ["slow: for slow tests."]
+markers = ["slow: for slow tests.", "local: does not run in CI."]