Revert "Remove all safesync_url functionality from gclient"

tests/gclient_scm_test.py

 #!/usr/bin/env python
 # Copyright (c) 2012 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.
 
 """Unit tests for gclient_scm.py."""
 
 # pylint: disable=E1103
 
 # Import before super_mox to keep valid references.
@@ skipping 582 matching lines @@
     self.url = 'git://foo'
     self.root_dir = '/tmp' if sys.platform != 'win32' else 't:\\tmp'
     self.relpath = 'fake'
     self.base_path = os.path.join(self.root_dir, self.relpath)
     self.backup_base_path = os.path.join(self.root_dir,
                                          'old_%s.git' % self.relpath)
 
   def tearDown(self):
     BaseTestCase.tearDown(self)
 
+  def testGetUsableRevGit(self):
+    # pylint: disable=E1101
+    options = self.Options(verbose=True)
+
+    self.mox.StubOutWithMock(gclient_scm.scm.GIT, 'IsValidRevision', True)
+    gclient_scm.scm.GIT.IsValidRevision(cwd=self.base_path, rev=self.fake_hash_1
+        ).AndReturn(True)
+
+    self.mox.StubOutWithMock(gclient_scm.scm.GIT, 'IsGitSvn', True)
+    gclient_scm.scm.GIT.IsGitSvn(cwd=self.base_path).MultipleTimes(
+        ).AndReturn(False)
+
+    gclient_scm.scm.os.path.isdir(self.base_path).AndReturn(True)
+    gclient_scm.os.path.isdir(self.base_path).AndReturn(True)
+
+    self.mox.ReplayAll()
+
+    git_scm = gclient_scm.CreateSCM(url=self.url, root_dir=self.root_dir,
+                                    relpath=self.relpath)
+    # A [fake] git sha1 with a git repo should work (this is in the case that
+    # the LKGR gets flipped to git sha1's some day).
+    self.assertEquals(git_scm.GetUsableRev(self.fake_hash_1, options),
+                      self.fake_hash_1)
+    # An SVN rev with an existing purely git repo should raise an exception.
+    self.assertRaises(gclient_scm.gclient_utils.Error,
+                      git_scm.GetUsableRev, '1', options)
+
+  def testGetUsableRevGitSvn(self):
+    # pylint: disable=E1101
+    options = self.Options()
+    too_big = str(1e7)
+
+    # Pretend like the git-svn repo's HEAD is at r2.
+    self.mox.StubOutWithMock(gclient_scm.scm.GIT, 'GetGitSvnHeadRev', True)
+    gclient_scm.scm.GIT.GetGitSvnHeadRev(cwd=self.base_path).MultipleTimes(
+        ).AndReturn(2)
+
+    self.mox.StubOutWithMock(
+        gclient_scm.scm.GIT, 'GetBlessedSha1ForSvnRev', True)
+    # r1 -> first fake hash, r3 -> second fake hash.
+    gclient_scm.scm.GIT.GetBlessedSha1ForSvnRev(cwd=self.base_path, rev='1'
+        ).AndReturn(self.fake_hash_1)
+    gclient_scm.scm.GIT.GetBlessedSha1ForSvnRev(cwd=self.base_path, rev='3'
+        ).MultipleTimes().AndReturn(self.fake_hash_2)
+
+    # Ensure that we call git svn fetch if our LKGR is > the git-svn HEAD rev.
+    self.mox.StubOutWithMock(gclient_scm.GitWrapper, '_Fetch', True)
+    self.mox.StubOutWithMock(gclient_scm.scm.GIT, 'Capture', True)
+    gclient_scm.scm.GIT.Capture(['config', '--get', 'svn-remote.svn.fetch'],
+                                cwd=self.base_path).AndReturn('blah')
+    # pylint: disable=E1120
+    gclient_scm.scm.GIT.Capture(['svn', 'fetch'], cwd=self.base_path)
+    error = subprocess2.CalledProcessError(1, 'cmd', '/cwd', 'stdout', 'stderr')
+    gclient_scm.scm.GIT.Capture(['config', '--get', 'svn-remote.svn.fetch'],
+                                cwd=self.base_path).AndRaise(error)
+    gclient_scm.GitWrapper._Fetch(options)
+    gclient_scm.scm.GIT.Capture(['svn', 'fetch'], cwd=self.base_path)
+    gclient_scm.GitWrapper._Fetch(options)
+
+    self.mox.StubOutWithMock(gclient_scm.scm.GIT, 'IsGitSvn', True)
+    gclient_scm.scm.GIT.IsGitSvn(cwd=self.base_path).MultipleTimes(
+        ).AndReturn(True)
+
+    self.mox.StubOutWithMock(gclient_scm.scm.GIT, 'IsValidRevision', True)
+    gclient_scm.scm.GIT.IsValidRevision(cwd=self.base_path, rev=self.fake_hash_1
+        ).AndReturn(True)
+    gclient_scm.scm.GIT.IsValidRevision(cwd=self.base_path, rev=too_big
+        ).MultipleTimes(2).AndReturn(False)
+
+    gclient_scm.os.path.isdir(self.base_path).AndReturn(False)
+    gclient_scm.os.path.isdir(self.base_path).MultipleTimes().AndReturn(True)
+
+    self.mox.ReplayAll()
+
+    git_svn_scm = self._scm_wrapper(url=self.url, root_dir=self.root_dir,
+                                    relpath=self.relpath)
+    # Without an existing checkout, this should fail.
+    # TODO(dbeam) Fix this. http://crbug.com/109184
+    self.assertRaises(gclient_scm.gclient_utils.Error,
+                      git_svn_scm.GetUsableRev, '1', options)
+    # Given an SVN revision with a git-svn checkout, it should be translated to
+    # a git sha1 and be usable.
+    self.assertEquals(git_svn_scm.GetUsableRev('1', options),
+                      self.fake_hash_1)
+    # Our fake HEAD rev is r2, so this should call git fetch and git svn fetch
+    # to get more revs (pymox will complain if this doesn't happen). We mock an
+    # optimized checkout the first time, so this run should call git fetch.
+    self.assertEquals(git_svn_scm.GetUsableRev('3', options),
+                      self.fake_hash_2)
+    # The time we pretend we're not optimized, so no git fetch should fire.
+    self.assertEquals(git_svn_scm.GetUsableRev('3', options),
+                      self.fake_hash_2)
+    # Given a git sha1 with a git-svn checkout, it should be used as is.
+    self.assertEquals(git_svn_scm.GetUsableRev(self.fake_hash_1, options),
+                      self.fake_hash_1)
+    # We currently check for seemingly valid SVN revisions by assuming 6 digit
+    # numbers, so assure that numeric revs >= 1000000 don't work.
+    self.assertRaises(gclient_scm.gclient_utils.Error,
+                      git_svn_scm.GetUsableRev, too_big, options)
+
   def testUpdateNoDotGit(self):
     options = self.Options()
 
     gclient_scm.os.path.isdir(
         os.path.join(self.base_path, '.git', 'hooks')).AndReturn(False)
     gclient_scm.os.path.exists(self.backup_base_path).AndReturn(False)
     gclient_scm.os.path.exists(self.base_path).AndReturn(True)
     gclient_scm.os.path.isdir(self.base_path).AndReturn(True)
     gclient_scm.os.path.exists(os.path.join(self.base_path, '.git')
                                ).AndReturn(False)
@@ skipping 258 matching lines @@
 
 if __name__ == '__main__':
   level = logging.DEBUG if '-v' in sys.argv else logging.FATAL
   logging.basicConfig(
       level=level,
       format='%(asctime).19s %(levelname)s %(filename)s:'
              '%(lineno)s %(message)s')
   unittest.main()
 
 # vim: ts=2:sw=2:tw=80:et: