add MultiDict

This commit introduces MultiDict, a multi-dictionary similar to
ODict, but with improved semantics (as in the Headers class).
MultiDict fixes a few issues that were present in the Request/Response
API. In particular, `request.cookies["foo"] = "bar"` has previously been a
no-op, as the cookies property returned a mutable _copy_ of the cookies.

1 files changed, 5 insertions, 5 deletions

diff --git a/test/netlib/http/test_headers.py b/test/netlib/http/test_headers.py
index 8c1db9dc..48d3b323 100644
--- a/test/netlib/http/test_headers.py
+++ b/test/netlib/http/test_headers.py
@@ -5,10 +5,10 @@ from netlib.tutils import raises
 class TestHeaders(object):
     def _2host(self):
         return Headers(
-            [
-                [b"Host", b"example.com"],
-                [b"host", b"example.org"]
-            ]
+            (
+                (b"Host", b"example.com"),
+                (b"host", b"example.org")
+            )
         )
 
     def test_init(self):
@@ -38,7 +38,7 @@ class TestHeaders(object):
         assert headers["Host"] == "example.com"
         assert headers["Accept"] == "text/plain"
 
-        with raises(ValueError):
+        with raises(TypeError):
             Headers([[b"Host", u"not-bytes"]])
 
     def test_getitem(self):