Push pending tag and synthesized commit in a single git push operation.

infra/libs/git2/test/ref_test.py

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 from infra.libs import git2
 from infra.libs.git2.test import test_util
 
 
 class TestRef(test_util.TestBasis):
   def testComparison(self):
@@ skipping 27 matching lines @@
 
   def testTo(self):
     r = self.mkRepo()
     A = r['refs/heads/root_A']
     O = r['refs/heads/branch_O']
     self.assertEqual(
         list(c.hsh for c in A.to(O)),
         [self.repo[c] for c in 'BCDLMNO']
     )
 
-  def testNonFastForward(self):
-    r = self.mkRepo()
-    O = r['refs/heads/branch_O']
-    D = r.get_commit(self.repo['D'])
-    with self.assertRaises(git2.CalledProcessError):
-      O.fast_forward_push(D)
-    self.assertEqual(
-        self.repo.git('rev-parse', 'branch_O').stdout.strip(),
-        self.repo['O'])
-
-  def testFastForward(self):
+  def testUpdateTo(self):
     r = self.mkRepo()
     O = r['refs/heads/branch_O']
     S = r.get_commit(self.repo['S'])
-    self.capture_stdio(O.fast_forward_push, S)
+    self.capture_stdio(O.update_to, S)
     self.assertEqual(O.commit.hsh, self.repo['S'])
-    self.assertEqual(
-        self.repo.git('rev-parse', 'branch_O').stdout.strip(),
-        self.repo['S'])
-
-