test_upload.py: implement remote_abort on our fake BucketWriter

src/allmydata/test/test_upload.py

@@ -2,6 +2,7 @@
 import os
 from twisted.trial import unittest
 from twisted.python.failure import Failure
+from twisted.python import log
 from twisted.internet import defer
 from cStringIO import StringIO
 
@@ -133,6 +134,9 @@ class FakeBucketWriter:
         precondition(not self.closed)
         self.closed = True
 
+    def remote_abort(self):
+        log.err("uh oh, I was asked to abort")
+
 class FakeClient:
     DEFAULT_ENCODING_PARAMETERS = {"k":25,
                                    "happy": 75,