Fix Site.name with empty host (#8929)

CHANGES/8929.bugfix.rst

@@ -0,0 +1 @@
+Fixed ``Site.name`` when host is an empty string -- by :user:`Dreamsorcerer`.

aiohttp/web_runner.py

@@ -108,7 +108,7 @@ def __init__(
     @property
     def name(self) -> str:
         scheme = "https" if self._ssl_context else "http"
-        host = "0.0.0.0" if self._host is None else self._host
+        host = "0.0.0.0" if not self._host else self._host
         return str(URL.build(scheme=scheme, host=host, port=self._port))
 
     async def start(self) -> None:

tests/test_web_runner.py

@@ -243,6 +243,13 @@ async def mock_create_server(*args, **kwargs):
     assert port == 8080
 
 
+async def test_tcpsite_empty_str_host(make_runner: Any) -> None:
+    runner = make_runner()
+    await runner.setup()
+    site = web.TCPSite(runner, host="")
+    assert site.name == "http://0.0.0.0:8080"
+
+
 def test_run_after_asyncio_run() -> None:
     async def nothing():
         pass