added test action

.github/workflows/test.yml

@@ -0,0 +1,57 @@
+name: test
+
+on:
+  push:
+    branches:
+      - "main"
+
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+
+jobs:
+
+  package:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Build and Check Package
+        uses: hynek/build-and-inspect-python-package@v1.5
+
+  test:
+
+    runs-on: ${{ matrix.os }}
+
+    needs: package
+
+    strategy:
+      fail-fast: false
+      matrix:
+        python: ["3.9", "3.10", "3.11", "3.12"]
+        os: [ubuntu-latest, windows-latest]
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Download Package
+      uses: actions/download-artifact@v3
+      with:
+        name: Packages
+        path: dist
+
+    - name: Set up Python
+      uses: actions/setup-python@v5
+      with:
+        python-version: ${{ matrix.python }}
+
+    - name: Install tox
+      run: |
+        python -m pip install --upgrade pip
+        pip install tox
+
+    - name: Test
+      shell: bash
+      run: |
+        tox run -e py --installpkg `find dist/*.tar.gz`