fix(request) Workarount for nonlatin1 path info (PEP3333 compliance)

falcon/request.py

@@ -220,6 +220,11 @@ class Request(object):
         # Normalize path
         path = env['PATH_INFO']
         if path:
+            if six.PY3:  # pragma: no cover
+                # PEP 3333 specifies that PATH_INFO variable are always
+                # "bytes tunneled as latin-1" and must be encoded back
+                path = path.encode('latin1').decode('utf-8', 'replace')
+
             if len(path) != 1 and path.endswith('/'):
                 self.path = path[:-1]
             else:

tests/test_req_vars.py

@@ -1,4 +1,6 @@
 import datetime
+import six
+import testtools
 
 import ddt
 
@@ -107,6 +109,16 @@ class TestReqVars(testing.TestBase):
 
         self.assertEqual(expected_uri, req.uri)
 
+    @testtools.skipUnless(six.PY3, 'Test only applies to Python 3')
+    def test_nonlatin_path(self):
+        cyrillic_path = u'/hello_\u043f\u0440\u0438\u0432\u0435\u0442'
+        cyrillic_path_decoded = cyrillic_path.encode('utf-8').decode('latin1')
+        req = Request(testing.create_environ(
+            host='com',
+            path=cyrillic_path_decoded,
+            headers=self.headers))
+        self.assertEqual(req.path, cyrillic_path)
+
     def test_uri(self):
         uri = ('http://' + testing.DEFAULT_HOST + ':8080' +
                self.app + self.relative_uri)