CI: added test workflow

.github/workflows/test.yml

@@ -0,0 +1,47 @@
+name: test
+
+on:
+  push:
+    branches:
+      - main
+      - master
+    tags:
+      - '*'
+  pull_request:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12']
+
+    steps:
+    - name: Git checkout
+      uses: actions/checkout@v3
+
+    - name: Set up python3 ${{ matrix.python-version }}
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: Install requirements
+      run: |
+        python -m pip install --upgrade pip
+        pip install --upgrade setuptools wheel setuptools-scm[toml] importlib-metadata
+        pip install flake8 pytest pytest-cov pytz
+        if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+        pip install .
+        pip list
+
+    - name: Test with pytest
+      run: |
+        pytest -sv
+
+    - name: Lint with flake8
+      run: |
+        # stop the build if there are Python syntax errors or undefined names
+        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
+        # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
+        flake8 . --count --exit-zero --max-complexity=12 --max-line-length=127 --statistics