Add tests against SGT conda distribution

Author: AlainKadar

.github/workflow/test.yml

@@ -0,0 +1,53 @@
+#Test against conda distribution of StructuralGT
+name: Test
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+on:
+  # Trigger on pull requests.
+  pull_request:
+
+  # Trigger on pushes to the mainline branches. This prevents building commits twice when the pull
+  # request source branch is in the same repository.
+  push:
+    branches:
+      - "master"
+
+  # Trigger on request.
+  workflow_dispatch:
+
+jobs:
+  execute_notebooks:
+    name: Execute notebooks, Python ${{ matrix.python-version }}
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.12", "3.13"]
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4.2.2
+      with:
+        path: StructuralGT-examples
+    # Important! All steps that use the conda environment should define "shell: bash -l {0}".
+    - uses: conda-incubator/setup-miniconda@v3
+      with:
+        python-version: ${{ matrix.python-version }}
+        mamba-version: "*"
+        channel-priority: strict
+        activate-environment: StructuralGT-examples
+        environment-file: StructuralGT-examples/environment.yml
+    - name: Display StructuralGT version
+      shell: bash -l {0}
+      run: |-
+        python3 -c "import StructuralGT; print(StructuralGT.__version__)"
+    # clone the tutorials and run them
+    - name: List notebooks
+      run: ls **/*.ipynb
+      working-directory: StructuralGT-examples
+    - name: Run notebook execution tests
+      shell: bash -l {0}
+      run: |-
+        python3 -m pytest -v --nbval --nbval-lax --ignore=archive/
+      working-directory: StructuralGT-examples

environment.yml

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+channels:
+  - conda-forge
+dependencies:
+  - matplotlib
+  - structuralgt
+  - pytest
+  - nbval