1 files changed, 13 insertions, 1 deletions
diff --git a/test/netlib/test_multidict.py b/test/netlib/test_multidict.py
index 038441e7..58ae0f98 100644
--- a/test/netlib/test_multidict.py
+++ b/test/netlib/test_multidict.py
@@ -45,7 +45,7 @@ class TestMultiDict(object):
         assert md["foo"] == "bar"
 
         with tutils.raises(KeyError):
-            md["bar"]
+            assert md["bar"]
 
         md_multi = TMultiDict(
             [("foo", "a"), ("foo", "b")]
@@ -101,6 +101,15 @@ class TestMultiDict(object):
         assert TMultiDict() != self._multi()
         assert TMultiDict() != 42
 
+    def test_hash(self):
+        """
+        If a class defines mutable objects and implements an __eq__() method,
+        it should not implement __hash__(), since the implementation of hashable
+        collections requires that a key's hash value is immutable.
+        """
+        with tutils.raises(TypeError):
+            assert hash(TMultiDict())
+
     def test_get_all(self):
         md = self._multi()
         assert md.get_all("foo") == ["bar"]
@@ -197,6 +206,9 @@ class TestImmutableMultiDict(object):
         with tutils.raises(TypeError):
             md.add("foo", "bar")
 
+    def test_hash(self):
+        assert hash(TImmutableMultiDict())
+
     def test_with_delitem(self):
         md = TImmutableMultiDict([("foo", "bar")])
         assert md.with_delitem("foo").fields == ()