test: verify wheel distribution contents (#57)

.github/workflows/ci.yml

@@ -42,6 +42,39 @@ jobs:
       - name: Build source and wheel distributions
         run: python -m build --sdist --wheel
 
+      - name: Verify wheel contents and entry point
+        run: |
+          python - <<'PY'
+          from pathlib import Path
+          from zipfile import ZipFile
+
+          wheels = list(Path("dist").glob("*.whl"))
+          if len(wheels) != 1:
+              raise SystemExit(f"expected one wheel, found: {wheels}")
+
+          with ZipFile(wheels[0]) as archive:
+              names = set(archive.namelist())
+              required = {
+                  "app.py",
+                  "obliteratus/__init__.py",
+                  "obliteratus/local_ui.py",
+              }
+              missing = sorted(required - names)
+              if missing:
+                  raise SystemExit(f"wheel is missing required modules: {missing}")
+
+              entry_points = [
+                  name for name in names if name.endswith(".dist-info/entry_points.txt")
+              ]
+              if len(entry_points) != 1:
+                  raise SystemExit(f"expected one entry_points.txt, found: {entry_points}")
+              contents = archive.read(entry_points[0]).decode("utf-8")
+              if "obliteratus = obliteratus.cli:main" not in contents:
+                  raise SystemExit("wheel is missing the obliteratus console entry point")
+
+          print(f"verified wheel contents: {wheels[0]}")
+          PY
+
   lint:
     name: Ruff
     runs-on: ubuntu-latest