Unit Test Workflow, Dockerfile, and Other Improvements

.github/workflows/unittests.yaml

@@ -0,0 +1,74 @@
+name: Pytest
+
+on:
+  push:
+    branches:
+      - master
+  pull_request: {}
+
+jobs:
+  test:
+    name: Unit Tests
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      matrix:
+        os: [ubuntu-22.04, windows-latest, macos-latest]
+        python-version: ["3.8", "3.9", "3.10", "3.11"]
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v3
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+        cache: pip
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install pytest pytest-cov
+        pip install -r requirements.txt
+    
+    - name: Test
+      run: |
+        pytest
+
+  coverage:
+    name: Coverage Summary
+    runs-on: ubuntu-22.04
+    permissions:
+      pull-requests: write
+      contents: read
+
+    if: github.event_name == 'pull_request'
+    strategy:
+      fail-fast: false
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v3
+
+    - name: Set up Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: "3.11"
+        cache: pip
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install pytest pytest-cov
+        pip install -r requirements.txt
+
+    - name: Run Coverage
+      run: |
+        pytest --junitxml=pytest.xml --cov-report=term-missing:skip-covered --cov=semver | tee pytest-coverage.txt
+
+    - name: Comment Result Summary
+      uses: MishaKav/pytest-coverage-comment@main
+      with:
+        pytest-coverage-path: ./pytest-coverage.txt
+        junitxml-path: ./pytest.xml