CI: check entry points

Fixes: fdd23e82926d7d10ec4a8e65e42b5184a4ee20ce

.github/workflows/tox.yml

@@ -28,4 +28,5 @@ jobs:
           python -m pip install --upgrade pip
           python -m pip install tox
       - run: tox -e run-module
+      - run: tox -e run-entrypoint
       - run: tox -e py

appveyor.yml

@@ -7,6 +7,11 @@ environment:
       PYTHON: "C:\\Python38-x64"
     - TOXENV: pycodestyle
       PYTHON: "C:\\Python38-x64"
+    # Windows cannot even import the module when they unconditionally import, see below.
+    #- TOXENV: run-module
+    #  PYTHON: "C:\\Python38-x64"
+    #- TOXENV: run-entrypoint
+    #  PYTHON: "C:\\Python38-x64"
     # Windows is not ready for testing!!!
     # Python's fcntl, grp, pwd, os.geteuid(), and socket.AF_UNIX are all Unix-only.
     #- TOXENV: py35

pyproject.toml

@@ -62,6 +62,14 @@ testing = [
     "pytest-cov",
 ]
 
+[project.scripts]
+# duplicates "python -m gunicorn" handling in __main__.py
+gunicorn = "gunicorn.app.wsgiapp:run"
+
+# note the quotes around "paste.server_runner" to escape the dot
+[project.entry-points."paste.server_runner"]
+main = "gunicorn.app.pasterapp:serve"
+
 [tool.pytest.ini_options]
 # # can override these: python -m pytest --override-ini="addopts="
 norecursedirs = ["examples", "lib", "local", "src"]

requirements_dev.txt

@@ -1,4 +1,9 @@
 -r requirements_test.txt
 
+# setuptools v68.0 fails hard on invalid pyproject.toml
+# which a developer would want to know
+# otherwise, oldest known-working version is 61.2
+setuptools>=68.0
+
 sphinx
 sphinx_rtd_theme

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py{37,38,39,310,311,py3}, lint, docs-lint, pycodestyle, run-module
+envlist = py{37,38,39,310,311,py3}, lint, docs-lint, pycodestyle, run-entrypoint, run-module
 skipsdist = false
 ; Can't set skipsdist and use_develop in tox v4 to true due to https://github.com/tox-dev/tox/issues/2730
 
@@ -9,8 +9,13 @@ commands = pytest --cov=gunicorn {posargs}
 deps =
   -rrequirements_test.txt
 
+[testenv:run-entrypoint]
+# entry point: console script (provided by setuptools from pyproject.toml)
+commands = python -c 'import subprocess; cmd_out = subprocess.check_output(["gunicorn", "--version"])[:79].decode("utf-8", errors="replace"); print(cmd_out); assert cmd_out.startswith("gunicorn ")'
+
 [testenv:run-module]
-commands = python3 -m gunicorn --version
+# runpy (provided by module.__main__)
+commands = python -c 'import sys,subprocess; cmd_out = subprocess.check_output([sys.executable, "-m", "gunicorn", "--version"])[:79].decode("utf-8", errors="replace"); print(cmd_out); assert cmd_out.startswith("gunicorn ")'
 
 [testenv:lint]
 commands =