Add test case for port being zero (#1758)

Co-authored-by: Marcelo Trylesinski <marcelotryle@gmail.com>

setup.cfg

@@ -82,7 +82,7 @@ plugins =
 
 [coverage:report]
 precision = 2
-fail_under = 98.30
+fail_under = 98.28
 show_missing = true
 skip_covered = true
 exclude_lines =

tests/middleware/test_logging.py

@@ -206,3 +206,14 @@ async def app(scope, receive, send):
             if record.name == "uvicorn.access"
         ]
         assert '"GET / HTTP/1.1" 599' in messages.pop()
+
+
+@pytest.mark.anyio
+async def test_server_start_with_port_zero(caplog: pytest.LogCaptureFixture):
+    config = Config(app=app, port=0)
+    async with run_server(config) as server:
+        server = server.servers[0]
+        sock = server.sockets[0]
+        host, port = sock.getsockname()
+    messages = [record.message for record in caplog.records if "uvicorn" in record.name]
+    assert f"Uvicorn running on http://{host}:{port} (Press CTRL+C to quit)" in messages