diff --git a/.github/workflows/python_lint.yml b/.github/workflows/python_lint.yml
new file mode 100644
index 00000000..fb140e3a
--- /dev/null
+++ b/.github/workflows/python_lint.yml
@@ -0,0 +1,27 @@
+name: Python Lint
+on:
+  push:
+    branches: [main]
+    paths-ignore: [".teamcity/**"]
+    tags: ["*"]
+  pull_request:
+  merge_group:
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+jobs:
+  mypy:
+    name: Mypy
+    runs-on: ubuntu-latest
+    continue-on-error: true
+    steps:
+      - uses: actions/checkout@v4
+      - uses: prefix-dev/setup-pixi@v0.2.1
+        with:
+          pixi-version: "latest"
+          cache: true
+      - name: Prepare pixi
+        run: pixi run install-without-pre-commit
+      - name: Run mypy on hydamo
+        run: |
+          pixi run mypy-hydamo
diff --git a/.github/workflows/python_tests.yml b/.github/workflows/python_tests.yml
new file mode 100644
index 00000000..cb9a6ee4
--- /dev/null
+++ b/.github/workflows/python_tests.yml
@@ -0,0 +1,43 @@
+name: Python Tests
+on:
+  push:
+    branches: [main]
+    paths-ignore: [".teamcity/**"]
+    tags: ["*"]
+  pull_request:
+  merge_group:
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+jobs:
+  test:
+    name: Python ${{ matrix.python_version }} - ${{ matrix.os }} - ${{ matrix.arch }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+          - ubuntu-latest
+          - macOS-latest
+          - windows-latest
+        python_version:
+          - "3.9"
+          - "3.10"
+          - "3.11"
+        arch:
+          - x86
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: prefix-dev/setup-pixi@v0.2.1
+        with:
+          pixi-version: "latest"
+          cache: true
+      - name: Prepare pixi
+        run: pixi run install-without-pre-commit
+
+      - name: Run tests
+        run: pixi run test-hydamo
+
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v3
diff --git a/.gitignore b/.gitignore
index d6dfb5c4..b19e4daf 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,6 +9,10 @@
 __pycache__/
 *.py[cod]
 *$py.class
+htmlcov/
+coverage.xml
+.coverage
+.coverage.*
 .pytest_cache/
 
 # mypy
diff --git a/codecov.yml b/codecov.yml
new file mode 100644
index 00000000..5212f756
--- /dev/null
+++ b/codecov.yml
@@ -0,0 +1,9 @@
+coverage:
+  status:
+    patch:
+      default:
+        informational: true
+
+    project:
+      default:
+        informational: true
diff --git a/pixi.lock b/pixi.lock
index 23e356e5..52949f57 100644
--- a/pixi.lock
+++ b/pixi.lock
@@ -2799,6 +2799,76 @@ package:
   license_family: BSD
   size: 185671
   timestamp: 1695554665873
+- name: coverage
+  version: 7.3.2
+  manager: conda
+  platform: linux-64
+  dependencies:
+    libgcc-ng: '>=12'
+    python: '>=3.11,<3.12.0a0'
+    python_abi: 3.11.* *_cp311
+    tomli: '*'
+  url: https://conda.anaconda.org/conda-forge/linux-64/coverage-7.3.2-py311h459d7ec_0.conda
+  hash:
+    md5: 7b3145fed7adc7c63a0e08f6f29f5480
+    sha256: 8b56edd4336e7fc6ff9b73436a3a270cf835f57cf4d0565c6e240c40f1981085
+  optional: false
+  category: main
+  build: py311h459d7ec_0
+  arch: x86_64
+  subdir: linux-64
+  build_number: 0
+  license: Apache-2.0
+  license_family: APACHE
+  size: 355132
+  timestamp: 1696281925482
+- name: coverage
+  version: 7.3.2
+  manager: conda
+  platform: osx-64
+  dependencies:
+    python: '>=3.11,<3.12.0a0'
+    python_abi: 3.11.* *_cp311
+    tomli: '*'
+  url: https://conda.anaconda.org/conda-forge/osx-64/coverage-7.3.2-py311h2725bcf_0.conda
+  hash:
+    md5: 0ce651c68a0322a6eacef726025b938a
+    sha256: ada34f95907fe0cd98d4d12e439bd1508363738f8b0fbe88d14cb398f4235af6
+  optional: false
+  category: main
+  build: py311h2725bcf_0
+  arch: x86_64
+  subdir: osx-64
+  build_number: 0
+  license: Apache-2.0
+  license_family: APACHE
+  size: 352862
+  timestamp: 1696282084699
+- name: coverage
+  version: 7.3.2
+  manager: conda
+  platform: win-64
+  dependencies:
+    python: '>=3.11,<3.12.0a0'
+    python_abi: 3.11.* *_cp311
+    tomli: '*'
+    ucrt: '>=10.0.20348.0'
+    vc: '>=14.2,<15'
+    vc14_runtime: '>=14.29.30139'
+  url: https://conda.anaconda.org/conda-forge/win-64/coverage-7.3.2-py311ha68e1ae_0.conda
+  hash:
+    md5: 6d0d75c92bdf393a2dd818b7fe6615a0
+    sha256: 1025c5a4da262a05563b7067101dd2fa9ef36b6f9c31e6c1df05db800375e18d
+  optional: false
+  category: main
+  build: py311ha68e1ae_0
+  arch: x86_64
+  subdir: win-64
+  build_number: 0
+  license: Apache-2.0
+  license_family: APACHE
+  size: 372107
+  timestamp: 1696282186892
 - name: cycler
   version: 0.12.0
   manager: conda
@@ -3142,6 +3212,69 @@ package:
   noarch: python
   size: 19262
   timestamp: 1692026296517
+- name: execnet
+  version: 2.0.2
+  manager: conda
+  platform: linux-64
+  dependencies:
+    python: '>=3.7'
+  url: https://conda.anaconda.org/conda-forge/noarch/execnet-2.0.2-pyhd8ed1ab_0.conda
+  hash:
+    md5: 67de0d8241e1060a479e3c37793e26f9
+    sha256: 88ea68a360198af39368beecf057af6b31f0ae38071b2bdb2aa961b6ae5427c0
+  optional: false
+  category: main
+  build: pyhd8ed1ab_0
+  arch: x86_64
+  subdir: linux-64
+  build_number: 0
+  license: MIT
+  license_family: MIT
+  noarch: python
+  size: 36534
+  timestamp: 1688933537234
+- name: execnet
+  version: 2.0.2
+  manager: conda
+  platform: osx-64
+  dependencies:
+    python: '>=3.7'
+  url: https://conda.anaconda.org/conda-forge/noarch/execnet-2.0.2-pyhd8ed1ab_0.conda
+  hash:
+    md5: 67de0d8241e1060a479e3c37793e26f9
+    sha256: 88ea68a360198af39368beecf057af6b31f0ae38071b2bdb2aa961b6ae5427c0
+  optional: false
+  category: main
+  build: pyhd8ed1ab_0
+  arch: x86_64
+  subdir: osx-64
+  build_number: 0
+  license: MIT
+  license_family: MIT
+  noarch: python
+  size: 36534
+  timestamp: 1688933537234
+- name: execnet
+  version: 2.0.2
+  manager: conda
+  platform: win-64
+  dependencies:
+    python: '>=3.7'
+  url: https://conda.anaconda.org/conda-forge/noarch/execnet-2.0.2-pyhd8ed1ab_0.conda
+  hash:
+    md5: 67de0d8241e1060a479e3c37793e26f9
+    sha256: 88ea68a360198af39368beecf057af6b31f0ae38071b2bdb2aa961b6ae5427c0
+  optional: false
+  category: main
+  build: pyhd8ed1ab_0
+  arch: x86_64
+  subdir: win-64
+  build_number: 0
+  license: MIT
+  license_family: MIT
+  noarch: python
+  size: 36534
+  timestamp: 1688933537234
 - name: executing
   version: 1.2.0
   manager: conda
@@ -11413,6 +11546,82 @@ package:
   noarch: python
   size: 12452
   timestamp: 1600387789153
+- name: mypy
+  version: 1.5.1
+  manager: conda
+  platform: linux-64
+  dependencies:
+    libgcc-ng: '>=12'
+    mypy_extensions: '>=1.0.0'
+    psutil: '>=4.0'
+    python: '>=3.11,<3.12.0a0'
+    python_abi: 3.11.* *_cp311
+    typing_extensions: '>=4.1.0'
+  url: https://conda.anaconda.org/conda-forge/linux-64/mypy-1.5.1-py311h459d7ec_1.conda
+  hash:
+    md5: f905742ceba3a2ffb62f27970267e297
+    sha256: 9f6100c14da70c612eeebd89b7a35f99b5ccb94a117e9a44f5e05739045e25b0
+  optional: false
+  category: main
+  build: py311h459d7ec_1
+  arch: x86_64
+  subdir: linux-64
+  build_number: 1
+  license: MIT
+  license_family: MIT
+  size: 15442785
+  timestamp: 1695442282679
+- name: mypy
+  version: 1.5.1
+  manager: conda
+  platform: osx-64
+  dependencies:
+    mypy_extensions: '>=1.0.0'
+    psutil: '>=4.0'
+    python: '>=3.11,<3.12.0a0'
+    python_abi: 3.11.* *_cp311
+    typing_extensions: '>=4.1.0'
+  url: https://conda.anaconda.org/conda-forge/osx-64/mypy-1.5.1-py311h2725bcf_1.conda
+  hash:
+    md5: f3391c1c3bd85f92b5130f70f32e86cc
+    sha256: b446e7b668a60352940e854a156dabeecef6d693ee0db05490104aab38b27d04
+  optional: false
+  category: main
+  build: py311h2725bcf_1
+  arch: x86_64
+  subdir: osx-64
+  build_number: 1
+  license: MIT
+  license_family: MIT
+  size: 9950575
+  timestamp: 1695442441211
+- name: mypy
+  version: 1.5.1
+  manager: conda
+  platform: win-64
+  dependencies:
+    mypy_extensions: '>=1.0.0'
+    psutil: '>=4.0'
+    python: '>=3.11,<3.12.0a0'
+    python_abi: 3.11.* *_cp311
+    typing_extensions: '>=4.1.0'
+    ucrt: '>=10.0.20348.0'
+    vc: '>=14.2,<15'
+    vc14_runtime: '>=14.29.30139'
+  url: https://conda.anaconda.org/conda-forge/win-64/mypy-1.5.1-py311ha68e1ae_1.conda
+  hash:
+    md5: b64c48d1d0d06fbd8161c9482705e59b
+    sha256: 7b73111972e210a76be0162653e598594d6770750325339b6a0b668ce303a436
+  optional: false
+  category: main
+  build: py311ha68e1ae_1
+  arch: x86_64
+  subdir: win-64
+  build_number: 1
+  license: MIT
+  license_family: MIT
+  size: 7977322
+  timestamp: 1695442297831
 - name: mypy_extensions
   version: 1.0.0
   manager: conda
@@ -14693,6 +14902,153 @@ package:
   noarch: python
   size: 244691
   timestamp: 1694128618921
+- name: pytest-cov
+  version: 4.1.0
+  manager: conda
+  platform: linux-64
+  dependencies:
+    coverage: '>=5.2.1'
+    pytest: '>=4.6'
+    python: '>=3.7'
+    toml: '*'
+  url: https://conda.anaconda.org/conda-forge/noarch/pytest-cov-4.1.0-pyhd8ed1ab_0.conda
+  hash:
+    md5: 06eb685a3a0b146347a58dda979485da
+    sha256: f07d3b44cabbed7843de654c4a6990a08475ce3b708bb735c7da9842614586f2
+  optional: false
+  category: main
+  build: pyhd8ed1ab_0
+  arch: x86_64
+  subdir: linux-64
+  build_number: 0
+  license: MIT
+  license_family: MIT
+  noarch: python
+  size: 25436
+  timestamp: 1684965001294
+- name: pytest-cov
+  version: 4.1.0
+  manager: conda
+  platform: osx-64
+  dependencies:
+    coverage: '>=5.2.1'
+    pytest: '>=4.6'
+    python: '>=3.7'
+    toml: '*'
+  url: https://conda.anaconda.org/conda-forge/noarch/pytest-cov-4.1.0-pyhd8ed1ab_0.conda
+  hash:
+    md5: 06eb685a3a0b146347a58dda979485da
+    sha256: f07d3b44cabbed7843de654c4a6990a08475ce3b708bb735c7da9842614586f2
+  optional: false
+  category: main
+  build: pyhd8ed1ab_0
+  arch: x86_64
+  subdir: osx-64
+  build_number: 0
+  license: MIT
+  license_family: MIT
+  noarch: python
+  size: 25436
+  timestamp: 1684965001294
+- name: pytest-cov
+  version: 4.1.0
+  manager: conda
+  platform: win-64
+  dependencies:
+    coverage: '>=5.2.1'
+    pytest: '>=4.6'
+    python: '>=3.7'
+    toml: '*'
+  url: https://conda.anaconda.org/conda-forge/noarch/pytest-cov-4.1.0-pyhd8ed1ab_0.conda
+  hash:
+    md5: 06eb685a3a0b146347a58dda979485da
+    sha256: f07d3b44cabbed7843de654c4a6990a08475ce3b708bb735c7da9842614586f2
+  optional: false
+  category: main
+  build: pyhd8ed1ab_0
+  arch: x86_64
+  subdir: win-64
+  build_number: 0
+  license: MIT
+  license_family: MIT
+  noarch: python
+  size: 25436
+  timestamp: 1684965001294
+- name: pytest-xdist
+  version: 3.3.1
+  manager: conda
+  platform: linux-64
+  dependencies:
+    execnet: '>=1.1'
+    pytest: '>=6.2.0'
+    python: '>=3.7'
+  url: https://conda.anaconda.org/conda-forge/noarch/pytest-xdist-3.3.1-pyhd8ed1ab_0.conda
+  hash:
+    md5: 816073bb54ef59f33f0f26c14f88311b
+    sha256: 5df2d0f1e42041476cbdf12b808890d668e7f0272b51f0f3fa7aab84732150b6
+  optional: false
+  category: main
+  build: pyhd8ed1ab_0
+  arch: x86_64
+  subdir: linux-64
+  build_number: 0
+  constrains:
+  - psutil >=3.0
+  license: MIT
+  license_family: MIT
+  noarch: python
+  size: 36169
+  timestamp: 1684499962909
+- name: pytest-xdist
+  version: 3.3.1
+  manager: conda
+  platform: osx-64
+  dependencies:
+    execnet: '>=1.1'
+    pytest: '>=6.2.0'
+    python: '>=3.7'
+  url: https://conda.anaconda.org/conda-forge/noarch/pytest-xdist-3.3.1-pyhd8ed1ab_0.conda
+  hash:
+    md5: 816073bb54ef59f33f0f26c14f88311b
+    sha256: 5df2d0f1e42041476cbdf12b808890d668e7f0272b51f0f3fa7aab84732150b6
+  optional: false
+  category: main
+  build: pyhd8ed1ab_0
+  arch: x86_64
+  subdir: osx-64
+  build_number: 0
+  constrains:
+  - psutil >=3.0
+  license: MIT
+  license_family: MIT
+  noarch: python
+  size: 36169
+  timestamp: 1684499962909
+- name: pytest-xdist
+  version: 3.3.1
+  manager: conda
+  platform: win-64
+  dependencies:
+    execnet: '>=1.1'
+    pytest: '>=6.2.0'
+    python: '>=3.7'
+  url: https://conda.anaconda.org/conda-forge/noarch/pytest-xdist-3.3.1-pyhd8ed1ab_0.conda
+  hash:
+    md5: 816073bb54ef59f33f0f26c14f88311b
+    sha256: 5df2d0f1e42041476cbdf12b808890d668e7f0272b51f0f3fa7aab84732150b6
+  optional: false
+  category: main
+  build: pyhd8ed1ab_0
+  arch: x86_64
+  subdir: win-64
+  build_number: 0
+  constrains:
+  - psutil >=3.0
+  license: MIT
+  license_family: MIT
+  noarch: python
+  size: 36169
+  timestamp: 1684499962909
 - name: python
   version: 3.11.6
   manager: conda
@@ -16556,6 +16912,27 @@ package:
   noarch: python
   size: 18433
   timestamp: 1604308660817
+- name: toml
+  version: 0.10.2
+  manager: conda
+  platform: osx-64
+  dependencies:
+    python: '>=2.7'
+  url: https://conda.anaconda.org/conda-forge/noarch/toml-0.10.2-pyhd8ed1ab_0.tar.bz2
+  hash:
+    md5: f832c45a477c78bebd107098db465095
+    sha256: f0f3d697349d6580e4c2f35ba9ce05c65dc34f9f049e85e45da03800b46139c1
+  optional: false
+  category: main
+  build: pyhd8ed1ab_0
+  arch: x86_64
+  subdir: osx-64
+  build_number: 0
+  license: MIT
+  license_family: MIT
+  noarch: python
+  size: 18433
+  timestamp: 1604308660817
 - name: toml
   version: 0.10.2
   manager: conda
diff --git a/pixi.toml b/pixi.toml
index af18975e..d99048ff 100644
--- a/pixi.toml
+++ b/pixi.toml
@@ -30,15 +30,19 @@ lint = { depends_on = [
     "pre-commit",
     "mypy-hydamo",
 ] }
+# Test
+test-hydamo = "pytest --numprocesses=auto src/hydamo/tests"
+test-hydamo-cov = "pytest --numprocesses=auto --cov=hydamo --cov-report=xml src/hydamo/tests"
+tests = { depends_on = [
+    "lint",
+    "test-hydamo",
+] }
 
 [dependencies]
 python = ">=3.9"
+pandas = "<2.1"
 geopandas = "0.14.0.*"
 fiona = "1.9.4.*"
-black = "23.9.1.*"
-pytest = "7.4.2.*"
-ruff = "0.0.292.*"
-pandas = "<2.1"
 tomli = "2.0.1.*"
 shapely = ">=2"
 pydantic = "~=1.0"
@@ -47,6 +51,13 @@ pyarrow = "13.0.0.*"
 pyogrio = "0.6.0.*"
 tomli-w = "1.0.0.*"
 matplotlib = "3.8.0.*"
+# dev
+ruff = "0.0.292.*"
+black = "23.9.1.*"
+pytest = "7.4.2.*"
+pytest-cov = "4.1.0.*"
+pytest-xdist = "3.3.1.*"
 pip = "23.2.1.*"
 pre-commit = "3.4.0.*"
 ipykernel = "6.25.2.*"
+mypy = "1.5.1.*"