nox for testing

.github/workflows/tests.yml

@@ -15,12 +15,12 @@ jobs:
       uses: actions/setup-python@v3
       with:
         python-version: ${{ matrix.python-version }}
-    - name: Install dependencies
+    - name: Install system dependencies
       run: |
         sudo apt-get install ngspice iverilog ngspice-dev libngspice0-dev
-    - name: Install Python packages
+    - name: Install nox
       run: |
-        pip install -e ".[dev]"
-    - name: Test
+        pip install nox
+    - name: Run tests
       run: |
-        pytest
+        nox -s test

noxfile.py

@@ -7,20 +7,59 @@
 
 """Setup file for nox (https://nox.thea.codes/en/stable/tutorial.html)."""
 
-from functools import cache
 
 import nox
 
-import tomllib  # Python 3.11+; use `tomli` for earlier versions
+# Python 3.11+ has tomllib built-in, use tomli for earlier versions
+try:
+    import tomllib
+except ImportError:
+    import tomli as tomllib
 
 
-@cache
 def get_doc_dependencies():
     with open("pyproject.toml", "rb") as f:
         pyproject = tomllib.load(f)
     return pyproject["project"]["optional-dependencies"]["docs"]
 
 
+def get_dev_dependencies():
+    with open("pyproject.toml", "rb") as f:
+        pyproject = tomllib.load(f)
+    return pyproject["project"]["optional-dependencies"]["dev"]
+
+
+@nox.session
+def test(session: nox.Session) -> None:
+    """Run the test suite with pytest."""
+    dev_deps = get_dev_dependencies()
+    session.install(".", *dev_deps)
+    session.run("pytest", *session.posargs)
+
+
+@nox.session
+def test_sdist(session: nox.Session) -> None:
+    """Test that the package works after creating and installing from sdist."""
+    # Install build tool
+    session.install("build")
+
+    # Create source distribution
+    session.run("python", "-m", "build", "--sdist", "--outdir", session.cache_dir)
+
+    # Find the created sdist file
+    import glob
+    sdist_files = glob.glob(str(session.cache_dir / "*.tar.gz"))
+    if not sdist_files:
+        session.error("No sdist file found")
+
+    # Install from sdist along with dev dependencies
+    dev_deps = get_dev_dependencies()
+    session.install(sdist_files[0], *dev_deps)
+
+    # Run tests to ensure everything works
+    session.run("pytest", *session.posargs)
+
+
 @nox.session
 def docs(session: nox.Session) -> None:
     """Invoke sphinx-build to build the HTML docs."""

pyproject.toml

@@ -24,6 +24,7 @@ dev = [
     "numpy",
     "matplotlib",
     "cocotbext-spi",
+    "tomli",
 ]
 
 docs = [