Add CI testing for pypsa2smspp package integration

.github/workflows/test.yml

@@ -50,6 +50,49 @@ 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"
+        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 with tests
+      run: |
+        git clone https://github.com/SPSUnipi/pypsa2smspp.git
+        cd pypsa2smspp
+        pip install -e .[dev]
+
+    - name: Test pypsa2smspp package
+      run: |
+        cd pypsa2smspp
+        pytest -v
+
   test_with_smspp:
     # Test package build in matrix of OS and Python versions
     name: Test package with SMSpp

.gitignore

@@ -174,3 +174,4 @@ test/temp*
 # SMS and pypsa files
 *.nc
 *.txt
+pypsa2smspp/