Fix a concurrency issue happening with deep dependencies when the intermediary

tests/gclient_scm_test.py

 #!/usr/bin/env python
 # Copyright (c) 2011 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=E1101,E1103,W0403
 
 # Import before super_mox to keep valid references.
@@ skipping 124 matching lines @@
     options = self.Options(verbose=True)
     gclient_scm.os.path.isdir(self.base_path).AndReturn(False)
     gclient_scm.os.path.exists(self.base_path).AndReturn(False)
     gclient_scm.scm.SVN.Capture(['--version']
         ).AndReturn('svn, version 1.5.1 (r32289)')
     # It'll to a checkout instead.
     gclient_scm.os.path.exists(join(self.base_path, '.git')).AndReturn(False)
     gclient_scm.os.path.exists(join(self.base_path, '.hg')).AndReturn(False)
     # Checkout.
     gclient_scm.os.path.exists(self.base_path).AndReturn(False)
+    parent = gclient_scm.os.path.dirname(self.base_path)
+    gclient_scm.os.path.exists(parent).AndReturn(False)
+    gclient_scm.os.makedirs(parent)
+    gclient_scm.os.path.exists(parent).AndReturn(True)
     files_list = self.mox.CreateMockAnything()
     gclient_scm.scm.SVN.RunAndGetFileList(
         options.verbose,
         ['checkout', self.url, self.base_path, '--force', '--ignore-externals'],
         cwd=self.root_dir,
         file_list=files_list)
 
     self.mox.ReplayAll()
     scm = self._scm_wrapper(url=self.url, root_dir=self.root_dir,
                             relpath=self.relpath)
     scm.revert(options, self.args, files_list)
     self.checkstdout(
         ('\n_____ %s is missing, synching instead\n' % self.relpath))
 
   def testRevertNoDotSvn(self):
     options = self.Options(verbose=True, force=True)
     gclient_scm.os.path.isdir(self.base_path).AndReturn(True)
     gclient_scm.os.path.isdir(join(self.base_path, '.svn')).AndReturn(False)
     gclient_scm.os.path.isdir(join(self.base_path, '.git')).AndReturn(False)
     gclient_scm.os.path.isdir(join(self.base_path, '.hg')).AndReturn(False)
     # Checkout.
     gclient_scm.os.path.exists(self.base_path).AndReturn(False)
     gclient_scm.os.path.exists(join(self.base_path, '.git')).AndReturn(False)
     gclient_scm.os.path.exists(join(self.base_path, '.hg')).AndReturn(False)
     gclient_scm.os.path.exists(self.base_path).AndReturn(False)
+    parent = gclient_scm.os.path.dirname(self.base_path)
+    gclient_scm.os.path.exists(parent).AndReturn(False)
+    gclient_scm.os.makedirs(parent)
+    gclient_scm.os.path.exists(parent).AndReturn(True)
     files_list = self.mox.CreateMockAnything()
     gclient_scm.scm.SVN.Capture(['--version']).AndReturn('svn, version 1.6')
     gclient_scm.scm.SVN.RunAndGetFileList(
         options.verbose,
         ['checkout', self.url, self.base_path, '--force', '--ignore-externals'],
         cwd=self.root_dir,
         file_list=files_list)
 
     self.mox.ReplayAll()
     scm = self._scm_wrapper(url=self.url, root_dir=self.root_dir,
@@ skipping 68 matching lines @@
     options = self.Options(verbose=True)
     file_info = gclient_scm.gclient_utils.PrintableObject()
     file_info.root = 'blah'
     file_info.url = self.url
     file_info.uuid = 'ABC'
     file_info.revision = 42
     gclient_scm.os.path.exists(join(self.base_path, '.git')).AndReturn(False)
     gclient_scm.os.path.exists(join(self.base_path, '.hg')).AndReturn(False)
     # Checkout.
     gclient_scm.os.path.exists(self.base_path).AndReturn(False)
+    parent = gclient_scm.os.path.dirname(self.base_path)
+    gclient_scm.os.path.exists(parent).AndReturn(False)
+    gclient_scm.os.makedirs(parent)
+    gclient_scm.os.path.exists(parent).AndReturn(True)
     files_list = self.mox.CreateMockAnything()
     gclient_scm.scm.SVN.Capture(['--version']
         ).AndReturn('svn, version 1.5.1 (r32289)')
     gclient_scm.scm.SVN.RunAndGetFileList(
         options.verbose,
         ['checkout', self.url, self.base_path, '--force', '--ignore-externals'],
         cwd=self.root_dir,
         file_list=files_list)
     self.mox.ReplayAll()
     scm = self._scm_wrapper(url=self.url, root_dir=self.root_dir,
@@ skipping 653 matching lines @@
 
 if __name__ == '__main__':
   if '-v' in sys.argv:
     logging.basicConfig(
         level=logging.DEBUG,
         format='%(asctime).19s %(levelname)s %(filename)s:'
                '%(lineno)s %(message)s')
   unittest.main()
 
 # vim: ts=2:sw=2:tw=80:et: