fixed tests

rest_framework/fields.py

@@ -1196,6 +1196,7 @@ class HiddenField(Field):
     def to_internal_value(self, data):
         return data
 
+
 class RecursiveField(Field):
     """
     A field that gets its representation from its parent.
@@ -1213,9 +1214,14 @@ class RecursiveField(Field):
         children = ListField(child=RecursiveField())
 
     class ListSerializer(self):
-        next = RecursiveField(allow_null=True)
+        next = RecursiveField()
     """
         
+    def __init__(self, *args, **kwargs):
+        kwargz = {'required': False}
+        kwargz.update(kwargs)
+        super(RecursiveField, self).__init__(*args, **kwargz)
+
     def _get_parent(self):
         if hasattr(self.parent, 'child') and self.parent.child is self:
             # Recursive field nested inside of some kind of composite list field
@@ -1229,6 +1235,7 @@ class RecursiveField(Field):
     def to_internal_value(self, data):
         return self._get_parent().to_internal_value(data)
 
+
 class SerializerMethodField(Field):
     """
     A read-only field that get its representation from calling a method on the

tests/test_fields.py

@@ -327,7 +327,7 @@ class TestRecursiveField:
         # test deserialization
         serializer = self.link_serializer(data=value)
         assert serializer.is_valid(), \
-            'cannot validate on deserialization'
+            'cannot validate on deserialization: %s' % dict(serializer.errors)
         assert serializer.validated_data == value, \
             'deserialized data does not match input'
 
@@ -349,9 +349,9 @@ class TestRecursiveField:
             'serialized data does not match input'
 
         # deserialization
-        serializer = self.link_serializer(data=value)
+        serializer = self.node_serializer(data=value)
         assert serializer.is_valid(), \
-            'cannot validate on deserialization'
+            'cannot validate on deserialization: %s' % dict(serializer.errors)
         assert serializer.validated_data == value, \
             'deserialized data does not match input'