Fix #782 regression: expand ~/path/to for static file serving

aiohttp/web_urldispatcher.py

@@ -440,7 +440,10 @@ def __init__(self, name, prefix, directory, *,
         self._prefix = prefix
         self._prefix_len = len(self._prefix)
         try:
-            directory = Path(directory).resolve()
+            directory = Path(directory)
+            if str(directory).startswith('~'):
+                directory = directory.expanduser()
+            directory = directory.resolve()
             if not directory.is_dir():
                 raise ValueError('Not a directory')
         except (FileNotFoundError, ValueError) as error:

tests/test_urldispatch.py

@@ -874,3 +874,12 @@ def test_resources_abc(self):
         self.assertIsInstance(self.router.resources(), Sized)
         self.assertIsInstance(self.router.resources(), Iterable)
         self.assertIsInstance(self.router.resources(), Container)
+
+    def test_static_route_user_home(self):
+        here = pathlib.Path(aiohttp.__file__).parent
+        home = pathlib.Path('~').expanduser()
+        if not str(here).startswith(str(home)):  # pragma: no cover
+            self.skipTest("aiohttp folder is not placed in user's HOME")
+        static_dir = '~/' + str(here.relative_to(home))
+        route = self.router.add_static('/st', static_dir)
+        self.assertEqual(here, route.get_info()['directory'])