CI: check entry points

Fixes: fdd23e8

appveyor.yml

@@ -7,6 +7,10 @@ environment:
       PYTHON: "C:\\Python38-x64"
     - TOXENV: pycodestyle
       PYTHON: "C:\\Python38-x64"
+    - TOXENV: run-entrypoint
+      PYTHON: "C:\\Python38-x64"
+    - TOXENV: run-module
+      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"]

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 scripts
+commands = python3 -c 'import subprocess; assert subprocess.check_output(["gunicorn", "--version"]).decode().startswith("gunicorn ")'
+
 [testenv:run-module]
-commands = python3 -m gunicorn --version
+# runpy: module.__main__
+commands = python3 -c 'import sys,subprocess; assert subprocess.check_output([sys.executable, "-m", "gunicorn", "--version"]).decode().startswith("gunicorn ")'
 
 [testenv:lint]
 commands =