Add a git cache for gclient sync operations.

tests/gclient_smoketest.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.
 
 """Smoke tests for gclient.py.
 
 Shell out 'gclient' and run basic conformance tests.
 
 This test assumes GClientSmokeBase.URL_BASE is valid.
@@ skipping 152 matching lines @@
     return 'svn://random.server/svn/'
 
   @property
   def git_base(self):
     return 'git://random.server/git/'
 
   def testHelp(self):
     """testHelp: make sure no new command was added."""
     result = self.gclient(['help'])
     # Roughly, not too short, not too long.
-    self.assertTrue(1000 < len(result[0]) and len(result[0]) < 2100,
+    self.assertTrue(1000 < len(result[0]) and len(result[0]) < 2300,
                     'Too much written to stdout: %d bytes' % len(result[0]))
     self.assertEquals(0, len(result[1]))
     self.assertEquals(0, result[2])
 
   def testUnknown(self):
     result = self.gclient(['foo'])
     # Roughly, not too short, not too long.
-    self.assertTrue(1000 < len(result[0]) and len(result[0]) < 2100,
+    self.assertTrue(1000 < len(result[0]) and len(result[0]) < 2300,
                     'Too much written to stdout: %d bytes' % len(result[0]))
     self.assertEquals(0, len(result[1]))
     self.assertEquals(0, result[2])
 
   def testNotConfigured(self):
     res = ('', 'Error: client not configured; see \'gclient config\'\n', 1)
     self.check(res, self.gclient(['cleanup']))
     self.check(res, self.gclient(['diff']))
     self.check(res, self.gclient(['pack']))
     self.check(res, self.gclient(['revert']))
@@ skipping 15 matching lines @@
     test(['config', self.svn_base + 'trunk/src/'],
          ('solutions = [\n'
           '  { "name"        : "src",\n'
           '    "url"         : "%strunk/src",\n'
           '    "deps_file"   : "DEPS",\n'
           '    "managed"     : True,\n'
           '    "custom_deps" : {\n'
           '    },\n'
           '    "safesync_url": "",\n'
           '  },\n'
-          ']\n') % self.svn_base)
+          ']\n'
+          'cache_dir = None\n') % self.svn_base)
 
     test(['config', self.git_base + 'repo_1', '--name', 'src'],
          ('solutions = [\n'
           '  { "name"        : "src",\n'
           '    "url"         : "%srepo_1",\n'
           '    "deps_file"   : "DEPS",\n'
           '    "managed"     : True,\n'
           '    "custom_deps" : {\n'
           '    },\n'
           '    "safesync_url": "",\n'
           '  },\n'
-          ']\n') % self.git_base)
+          ']\n'
+          'cache_dir = None\n') % self.git_base)
 
     test(['config', 'foo', 'faa'],
          'solutions = [\n'
          '  { "name"        : "foo",\n'
          '    "url"         : "foo",\n'
          '    "deps_file"   : "DEPS",\n'
           '    "managed"     : True,\n'
          '    "custom_deps" : {\n'
          '    },\n'
          '    "safesync_url": "faa",\n'
          '  },\n'
-         ']\n')
+         ']\n'
+         'cache_dir = None\n')
 
     test(['config', 'foo', '--deps', 'blah'],
          'solutions = [\n'
          '  { "name"        : "foo",\n'
          '    "url"         : "foo",\n'
          '    "deps_file"   : "blah",\n'
          '    "managed"     : True,\n'
          '    "custom_deps" : {\n'
          '    },\n'
           '    "safesync_url": "",\n'
          '  },\n'
-         ']\n')
+         ']\n'
+         'cache_dir = None\n')
 
     test(['config', '--spec', '["blah blah"]'], '["blah blah"]')
 
     os.remove(p)
     results = self.gclient(['config', 'foo', 'faa', 'fuu'])
     err = ('Usage: gclient.py config [options] [url] [safesync url]\n\n'
            'gclient.py: error: Inconsistent arguments. Use either --spec or one'
            ' or 2 args\n')
     self.check(('', err, 2), results)
     self.assertFalse(os.path.exists(join(self.root_dir, '.gclient')))
@@ skipping 1057 matching lines @@
 
   if '-c' in sys.argv:
     COVERAGE = True
     sys.argv.remove('-c')
     if os.path.exists('.coverage'):
       os.remove('.coverage')
     os.environ['COVERAGE_FILE'] = os.path.join(
         os.path.dirname(os.path.dirname(os.path.abspath(__file__))),
         '.coverage')
   unittest.main()