Add CI testing for pypsa2smspp package integration

.github/workflows/test.yml

@@ -50,6 +50,47 @@ jobs:
       run: |
         pytest
 
+  test_pypsa2smspp:
+    # Test pypsa2smspp package integration
+    name: Test pypsa2smspp integration
+    needs:
+    - test
+    runs-on: ${{ matrix.os }}
+    permissions:
+      contents: read
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version:
+        - "3.13"
+        - "3.12"
+        os:
+        - ubuntu-latest
+    env:
+      MPLBACKEND: Agg  # https://github.com/orgs/community/discussions/26434
+    steps:
+    - uses: actions/checkout@v5
+      with:
+        fetch-depth: 0 # Needed for setuptools_scm
+
+    - name: Set up Python ${{ matrix.python-version }} on ${{ matrix.os }}
+      uses: actions/setup-python@v6
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: Install package and dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install .[dev]
+
+    - name: Install pypsa2smspp
+      run: |
+        pip install pypsa2smspp
+
+    - name: Test pypsa2smspp integration
+      run: |
+        pytest test/test_pypsa2smspp.py -v
+
   test_with_smspp:
     # Test package build in matrix of OS and Python versions
     name: Test package with SMSpp

test/test_pypsa2smspp.py

@@ -0,0 +1,54 @@
+"""Tests for pypsa2smspp package integration."""
+
+import pytest
+
+
+def test_pypsa2smspp_import():
+    """Test that pypsa2smspp can be imported."""
+    import pypsa2smspp
+
+    assert hasattr(pypsa2smspp, "Transformation")
+    assert hasattr(pypsa2smspp, "TransformationConfig")
+
+
+def test_pypsa2smspp_basic_functionality():
+    """Test basic pypsa2smspp functionality with a simple network."""
+    import pypsa
+    import pypsa2smspp
+
+    # Create a simple PyPSA network
+    n = pypsa.Network()
+    n.add("Bus", "bus0")
+    n.add("Generator", "gen0", bus="bus0", p_nom=100, marginal_cost=50)
+    n.add("Load", "load0", bus="bus0", p_set=80)
+
+    # Verify the network was created
+    assert len(n.buses) == 1
+    assert len(n.generators) == 1
+    assert len(n.loads) == 1
+
+    # Test that we can instantiate TransformationConfig
+    config = pypsa2smspp.TransformationConfig()
+    assert config is not None
+
+
+def test_pypsa2smspp_config_loading():
+    """Test that pypsa2smspp can load its default configuration."""
+    import pypsa2smspp
+    import yaml
+    import os
+
+    # Find the config file
+    pypsa2smspp_path = pypsa2smspp.__file__
+    config_path = os.path.join(
+        os.path.dirname(pypsa2smspp_path), "data", "config_default.yaml"
+    )
+
+    assert os.path.exists(config_path), f"Config file not found at {config_path}"
+
+    # Load and verify config
+    with open(config_path) as f:
+        config = yaml.safe_load(f)
+
+    assert config is not None
+    assert isinstance(config, dict)