Add TestGypXcodeNinja to run tests against the xcode-ninja generator

test/copies/gyptest-samedir.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 file copies where two copies sections in the same target have the
 same destination directory.
 """
 
 import TestGyp
 
 # The Android build system doesn't allow output to go to arbitrary places.
 test = TestGyp.TestGyp(formats=['!android'])
-test.run_gyp('copies-samedir.gyp', chdir='src')
+test.run_gyp('copies-samedir.gyp',
+             '-G', 'xcode_ninja_target_pattern=^copies_samedir',
+             chdir='src')
+
 test.relocate('src', 'relocate/src')
 test.build('copies-samedir.gyp', 'copies_samedir', chdir='relocate/src')
 
 test.built_file_must_match('copies-out-samedir/file1',
                            'file1 contents\n',
                            chdir='relocate/src')
 
 test.built_file_must_match('copies-out-samedir/file2',
                            'file2 contents\n',
                            chdir='relocate/src')
 
 test.pass_test()