matrix test workflow

.github/workflows/matrix.yml

@@ -0,0 +1,66 @@
+name: Matrix test
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+defaults:
+  run:
+    shell: bash -l {0}
+
+jobs:
+  test:
+    name: Python ${{ matrix.python-version }}, OS ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+        matrix:
+            python-version: ['3.10', '3.11', '3.12']
+            os: ["macos-latest", "ubuntu-latest", "windows-latest"]
+    steps:
+      - name: check out test_workflow
+        uses: actions/checkout@v4
+
+      - name: Initialize miniconda
+        uses: conda-incubator/setup-miniconda@v3
+        with:
+          activate-environment: test
+          auto-update-conda: true
+          environment-file: environment.yml
+          python-version: ${{ matrix.python-version }}
+          auto-activate-base: false
+
+      - name: Conda config
+        run: >-
+          conda config --set always_yes yes
+          --set changeps1 no
+
+      - name: Install test_workflow and requirements
+        run: |
+          conda install --file requirements/run.txt
+          conda install --file requirements/test.txt
+          python -m pip install -r requirements/pip.txt
+          python -m pip install . --no-deps
+
+      - name: Install Xvfb
+        if: runner.os == 'Linux'
+        run: sudo apt-get install -y xvfb
+
+      - name: Start Xvfb
+        if: runner.os == 'Linux'
+        run: |
+          export DISPLAY=:99
+          Xvfb :99 -screen 0 1024x768x16 &
+
+      - name: Validate test_workflow
+        run: |
+          if [ "$RUNNER_OS" == "Linux" ]; then
+            export DISPLAY=:99
+          fi
+          python -m pytest
+
+      - name: Display Python and Conda info
+        run: |
+          python --version
+          conda info