Adds generator support for Xcode 5 xctest targets.

test/mac/gyptest-xctest.py

Index: test/mac/gyptest-xctest.py
===================================================================
--- test/mac/gyptest-xctest.py	(revision 0)
+++ test/mac/gyptest-xctest.py	(working copy)
@@ -0,0 +1,38 @@
+#!/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 xctest targets are correctly configured.
+"""
+
+import TestGyp
+
+import sys
+
+if sys.platform == 'darwin':
+  test = TestGyp.TestGyp(formats=['xcode'])
+
+  # Ignore this test if Xcode 5 is not installed
+  import subprocess
+  job = subprocess.Popen(['xcodebuild', '-version'],
+                         stdout=subprocess.PIPE,
+                         stderr=subprocess.STDOUT)
+  out, err = job.communicate()
+  if job.returncode != 0:
+    raise Exception('Error %d running xcodebuild' % job.returncode)
+  xcode_version, build_number = out.splitlines()
+  # Convert the version string from 'Xcode 5.0' to ['5','0'].
+  xcode_version = xcode_version.split()[-1].split('.')
+  if xcode_version < ['5']:
+    test.pass_test()
+
+  CHDIR = 'xctest'
+  test.run_gyp('test.gyp', chdir=CHDIR)
+  test.build('test.gyp', chdir=CHDIR, arguments=['-scheme', 'classes', 'test'])
+
+  test.built_file_must_match('tests.xctest/Contents/Resources/resource.txt',
+                             'foo\n', chdir=CHDIR)
+  test.pass_test()