add tests for adaptation of multivaluated fields

--HG--
extra : convert_revision : svn%3Ab85faa78-f9eb-468e-a121-7cced6da292c%40984

scrapy/trunk/scrapy/tests/test_itemadaptor.py

@@ -1,7 +1,7 @@
 import unittest
 import string
 from scrapy.contrib_exp.newitem.adaptors import adaptor, ItemAdaptor
-from scrapy.contrib_exp.newitem import Item, StringField
+from scrapy.contrib_exp.newitem import * 
 
 
 class BaseItem(Item):
@@ -24,10 +24,21 @@ class TestAdaptor(BaseAdaptor):
 class DefaultedAdaptor(BaseAdaptor):
     default_adaptor = lambda v: v.title()
 
+
 class InheritDefaultAdaptor(DefaultedAdaptor):
     pass
 
 
+class MultiValuedTestItem(Item):
+    names = MultiValuedField(StringField)
+
+
+class MultiValuedItemAdaptor(ItemAdaptor):
+    item_class = MultiValuedTestItem
+
+    names = adaptor(lambda v: v.title())
+
+
 class ItemAdaptorTest(unittest.TestCase):
 
     def test_basic(self):
@@ -92,6 +103,11 @@ class ItemAdaptorTest(unittest.TestCase):
         dia.name = 'marta'
         self.assertEqual(dia.name, 'mARTA')
 
+    def test_multiplevaluedadaptor(self):
+        ma = MultiValuedItemAdaptor()
+        ma.names = ['name1', 'name2']
+        assert ma.names == ['Name1', 'Name2']
+
 
 class TreeadaptTest(unittest.TestCase):