Add TestGypXcodeNinja to run tests against the xcode-ninja generator

test/copies/gyptest-attribs.py

 #!/usr/bin/env python
 
 # Copyright (c) 2013 Google Inc. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """
 Verifies that copying files preserves file attributes.
 """
 
 import TestGyp
 
 import os
 import stat
 import sys
 
 
 def check_attribs(path, expected_exec_bit):
   out_path = test.built_file_path(path, chdir='src')
 
   in_stat = os.stat(os.path.join('src', path))
   out_stat = os.stat(out_path)
   if out_stat.st_mode & stat.S_IXUSR != expected_exec_bit:
     test.fail_test()
 
 
 test = TestGyp.TestGyp()
 
-test.run_gyp('copies-attribs.gyp', chdir='src')
+test.run_gyp('copies-attribs.gyp',
+             '-G', 'xcode_ninja_target_pattern=^copies1$',
+             chdir='src')
 
 test.build('copies-attribs.gyp', chdir='src')
 
 if sys.platform != 'win32':
   out_path = test.built_file_path('executable-file.sh', chdir='src')
   test.must_contain(out_path,
                     '#!/bin/bash\n'
                     '\n'
                     'echo echo echo echo cho ho o o\n')
   check_attribs('executable-file.sh', expected_exec_bit=stat.S_IXUSR)
 
 test.pass_test()