tests/py3: Improve header casing

Previously, our unit tests with socket servers would let eventlet
capitalize headers on the way out, which

- isn't something we want to have eventlet do, because it
- breaks unicode-in-header-names on py3, so it
- is already disabled in swift.common.wsgi.run_server() for real servers.

Include a test to make sure we don't forget about it in the future.

Change-Id: I0156d0059092ed414b296c65fb70fc18533b074a

test/unit/helpers.py

@@ -214,27 +214,38 @@ def setup_servers(the_object_server=object_server, extra_conf=None):
     logging_prosv = proxy_logging.ProxyLoggingMiddleware(
         listing_formats.ListingFilter(prosrv), conf, logger=prosrv.logger)
     prospa = spawn(wsgi.server, prolis, logging_prosv, nl,
-                   protocol=SwiftHttpProtocol)
+                   protocol=SwiftHttpProtocol,
+                   capitalize_response_headers=False)
     acc1spa = spawn(wsgi.server, acc1lis, acc1srv, nl,
-                    protocol=SwiftHttpProtocol)
+                    protocol=SwiftHttpProtocol,
+                    capitalize_response_headers=False)
     acc2spa = spawn(wsgi.server, acc2lis, acc2srv, nl,
-                    protocol=SwiftHttpProtocol)
+                    protocol=SwiftHttpProtocol,
+                    capitalize_response_headers=False)
     con1spa = spawn(wsgi.server, con1lis, con1srv, nl,
-                    protocol=SwiftHttpProtocol)
+                    protocol=SwiftHttpProtocol,
+                    capitalize_response_headers=False)
     con2spa = spawn(wsgi.server, con2lis, con2srv, nl,
-                    protocol=SwiftHttpProtocol)
+                    protocol=SwiftHttpProtocol,
+                    capitalize_response_headers=False)
     obj1spa = spawn(wsgi.server, obj1lis, obj1srv, nl,
-                    protocol=SwiftHttpProtocol)
+                    protocol=SwiftHttpProtocol,
+                    capitalize_response_headers=False)
     obj2spa = spawn(wsgi.server, obj2lis, obj2srv, nl,
-                    protocol=SwiftHttpProtocol)
+                    protocol=SwiftHttpProtocol,
+                    capitalize_response_headers=False)
     obj3spa = spawn(wsgi.server, obj3lis, obj3srv, nl,
-                    protocol=SwiftHttpProtocol)
+                    protocol=SwiftHttpProtocol,
+                    capitalize_response_headers=False)
     obj4spa = spawn(wsgi.server, obj4lis, obj4srv, nl,
-                    protocol=SwiftHttpProtocol)
+                    protocol=SwiftHttpProtocol,
+                    capitalize_response_headers=False)
     obj5spa = spawn(wsgi.server, obj5lis, obj5srv, nl,
-                    protocol=SwiftHttpProtocol)
+                    protocol=SwiftHttpProtocol,
+                    capitalize_response_headers=False)
     obj6spa = spawn(wsgi.server, obj6lis, obj6srv, nl,
-                    protocol=SwiftHttpProtocol)
+                    protocol=SwiftHttpProtocol,
+                    capitalize_response_headers=False)
     context["test_coros"] = \
         (prospa, acc1spa, acc2spa, con1spa, con2spa, obj1spa, obj2spa, obj3spa,
          obj4spa, obj5spa, obj6spa)

test/unit/proxy/test_server.py

@@ -2432,6 +2432,41 @@ class TestReplicatedObjectController(
         self.assertEqual(res.status_int, 200)
         self.assertEqual(res.body, b'')
 
+    @unpatch_policies
+    def test_PUT_GET_unicode_metadata(self):
+        prolis = _test_sockets[0]
+        sock = connect_tcp(('localhost', prolis.getsockname()[1]))
+        fd = sock.makefile('rwb')
+
+        path = b'/v1/a/c/o.zerobyte'
+        fd.write(b'PUT %s HTTP/1.1\r\n'
+                 b'Host: localhost\r\n'
+                 b'X-Storage-Token: t\r\n'
+                 b'Expect: 100-continue\r\n'
+                 b'Transfer-Encoding: chunked\r\n'
+                 b'Content-Type: application/octet-stream\r\n'
+                 b'X-Object-Meta-\xf0\x9f\x8c\xb4: \xf0\x9f\x91\x8d\r\n'
+                 b'\r\n0\r\n\r\n' % (path,))
+        fd.flush()
+        headers = readuntil2crlfs(fd)
+        exp = b'HTTP/1.1 100'
+        self.assertEqual(headers[:len(exp)], exp)
+        headers = readuntil2crlfs(fd)
+        exp = b'HTTP/1.1 201'
+        self.assertEqual(headers[:len(exp)], exp)
+
+        fd.write(b'GET %s HTTP/1.1\r\n'
+                 b'Host: localhost\r\n'
+                 b'Connection: close\r\n'
+                 b'X-Storage-Token: t\r\n'
+                 b'\r\n' % (path,))
+        fd.flush()
+        headers = readuntil2crlfs(fd)
+        exp = b'HTTP/1.1 200'
+        self.assertEqual(headers[:len(exp)], exp)
+        self.assertIn(b'X-Object-Meta-\xf0\x9f\x8c\xb4: \xf0\x9f\x91\x8d',
+                      headers.split(b'\r\n'))
+
     @unpatch_policies
     def test_GET_short_read(self):
         prolis = _test_sockets[0]
@@ -5332,7 +5367,7 @@ class TestReplicatedObjectController(
         exp = b'HTTP/1.1 200'
         self.assertEqual(headers[:len(exp)], exp)
         self.assertIn(b'\r\nX-Object-Meta-%s: %s\r\n' %
-                      (quote(ustr_short).lower().encode('ascii'),
+                      (quote(ustr_short).title().encode('ascii'),
                        quote(ustr).encode('ascii')), headers)
 
     @unpatch_policies