add pytest action with single python version for pull-requests

.github/workflows/pytest_coveralls.yml

@@ -0,0 +1,34 @@
+# This workflow will install Python dependencies, run tests for a single versions of Python and commit test results to coveralls
+# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions
+
+name: pytest
+
+on: pull_request
+
+jobs:
+  pytest:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        lfs: true
+    - name: Set up Python 3.8
+      uses: actions/setup-python@v4
+      with:
+        python-version: 3.8
+    - name: Install dependencies
+      run: |
+        git lfs pull
+        python -m pip install --upgrade pip
+        python -m pip install pytest coverage coveralls
+    - name: Install package
+      run: |
+        python -m pip install .
+    - name: Test with pytest
+      run: |
+        coverage run -m pytest -sv --show-capture=no tests
+    - name: Submit to coveralls
+      env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      run: |
+          coveralls --service=github