ci: Add GitHub Actions workflow for running tests

.github/workflows/tests.yml

@@ -0,0 +1,30 @@
+name: Tests
+
+on:
+  pull_request:
+    branches: [ main ]
+  push:
+    branches: [ main ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.11", "3.12"]
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v4
+      with:
+        python-version: ${{ matrix.python-version }}
+    
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install ".[test]"
+    
+    - name: Run tests
+      run: |
+        pytest

pyproject.toml

@@ -18,6 +18,18 @@ dependencies = [
   "magiccube==0.3.0",
   "pyfiglet==1.0.2"
 ]
+
+[project.optional-dependencies]
+test = [
+    "pytest>=7.0.0",
+    "pytest-cov>=4.0.0",
+]
+
+[tool.pytest.ini_options]
+addopts = "-ra -q --cov=reasoning_gym"
+testpaths = [
+    "tests",
+]
 classifiers = [
   "Programming Language :: Python :: 3",
   "License :: OSI Approved :: Apache Software License",