diff -r cdd7d3c0549c -r 9213a63fa34a script/lib/iri_tweet/tests.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/script/lib/iri_tweet/tests.py	Mon Aug 08 09:01:40 2011 +0200
@@ -0,0 +1,97 @@
+from sqlalchemy import Column, Integer, String, ForeignKey, create_engine
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import relationship, backref
+import unittest #@UnresolvedImport
+from sqlalchemy.orm import sessionmaker
+from iri_tweet.utils import ObjectsBuffer
+
+Base = declarative_base()
+
+class User(Base):
+    __tablename__ = 'users'
+    
+    id = Column(Integer, primary_key=True)
+    name = Column(String)
+    fullname = Column(String)
+    password = Column(String)
+    
+    def __init__(self, name, fullname, password):
+        self.name = name
+        self.fullname = fullname
+        self.password = password
+    
+    def __repr__(self):
+        return "<User('%s','%s', '%s')>" % (self.name, self.fullname, self.password)
+
+
+class Address(Base):
+    __tablename__ = 'addresses'
+    id = Column(Integer, primary_key=True)
+    email_address = Column(String, nullable=False)
+    user_id = Column(Integer, ForeignKey('users.id'))
+    
+    user = relationship("User", backref=backref('addresses', order_by=id))
+    
+    def __init__(self, user_id, email_address):
+        self.email_address = email_address
+        self.user_id = user_id
+    
+    def __repr__(self):
+        return "<Address('%s')>" % self.email_address
+
+
+
+class TestObjectBuffer(unittest.TestCase):
+    
+    def setUp(self):
+        self.engine = create_engine('sqlite:///:memory:', echo=False)
+        Base.metadata.create_all(self.engine)
+        sessionMaker = sessionmaker(bind=self.engine)
+        self.session = sessionMaker()
+        
+    def testCreateUser(self):
+        ed_user = User('ed', 'Ed Jones', 'edspassword')
+        self.session.add(ed_user)
+        self.assertTrue(ed_user.id is None)
+        self.session.commit()
+        self.assertTrue(ed_user.id is not None)
+        
+    def testSimpleBuffer(self):
+        obj_buffer = ObjectsBuffer()
+        obj_proxy = obj_buffer.add_object(User, ['ed1', 'Ed1 Jones', 'edspassword'], None, False)
+        self.assertTrue(obj_proxy.id() is None)
+        obj_buffer.persists(self.session)
+        self.assertTrue(obj_proxy.id() is None)
+        self.session.commit()
+        self.assertTrue(obj_proxy.id() is not None)
+        
+    def testSimpleBufferFlush(self):
+        obj_buffer = ObjectsBuffer()
+        obj_proxy = obj_buffer.add_object(User, ['ed2', 'Ed2 Jones', 'edspassword'], None, True)
+        self.assertTrue(obj_proxy.id() is None)
+        obj_buffer.persists(self.session)
+        self.assertTrue(obj_proxy.id() is not None)
+        self.session.commit()
+        self.assertTrue(obj_proxy.id() is not None)
+        
+    def testRelationBuffer(self):
+        obj_buffer = ObjectsBuffer()
+        user1_proxy = obj_buffer.add_object(User, ['ed3', 'Ed3 Jones', 'edspassword'], None, True)
+        obj_buffer.add_object(Address, [user1_proxy.id,'ed3@mail.com'], None, False)
+        obj_buffer.add_object(Address, [user1_proxy.id,'ed3@other.com'], None, False)
+        user2_proxy = obj_buffer.add_object(User, ['ed4', 'Ed3 Jones', 'edspassword'], None, True)
+        obj_buffer.add_object(Address, [user2_proxy.id,'ed4@mail.com'], None, False)
+        obj_buffer.persists(self.session)
+        self.session.commit()
+        ed_user = self.session.query(User).filter_by(name='ed3').first()
+        self.assertEquals(2, len(ed_user.addresses))
+        ed_user = self.session.query(User).filter_by(name='ed4').first()
+        self.assertEquals(1, len(ed_user.addresses))
+
+        
+    def tearDown(self):
+        self.session.close()
+
+
+if __name__ == '__main__':
+    unittest.main()
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