add ci

.github/workflows/ci.yml

@@ -0,0 +1,42 @@
+name: CI for torchviz
+
+ on:
+   push:
+     branches:
+       - ci
+   pull_request:
+     branches:
+       - ci
+
+ jobs:
+   test:
+     name: Test on Python ${{ matrix.python-version }}
+     runs-on: ubuntu-latest
+
+     strategy:
+       matrix:
+         python-version: [3.8, 3.9, 3.10, 3.11]
+
+     steps:
+       - name: Checkout code
+         uses: actions/checkout@v3
+
+       - name: Set up Python
+         uses: actions/setup-python@v4
+         with:
+           python-version: ${{ matrix.python-version }}
+
+       - name: Install system dependencies
+         run: |
+           sudo apt-get update
+           sudo apt-get install -y graphviz
+ 
+       - name: Install Python dependencies
+         run: |
+           python -m pip install --upgrade pip
+           pip install .
+           pip install pytest
+ 
+       - name: Run tests
+         run: |
+           pytest test/