Adding a test to cover XCode UID collisions.

test/same-gyp-name/gyptest-default.py

Index: test/same-gyp-name/gyptest-default.py
===================================================================
--- test/same-gyp-name/gyptest-default.py	(revision 1498)
+++ test/same-gyp-name/gyptest-default.py	(working copy)
@@ -1,6 +1,6 @@
 #!/usr/bin/env python
 
-# Copyright (c) 2011 Google Inc. All rights reserved.
+# Copyright (c) 2012 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.
 
@@ -10,9 +10,7 @@
 
 import TestGyp
 
-# This causes a problem on XCode (duplicate ID).
-# See http://code.google.com/p/gyp/issues/detail?id=114
-test = TestGyp.TestGyp(formats=['!xcode'])
+test = TestGyp.TestGyp()
 
 test.run_gyp('all.gyp', chdir='src')
 
@@ -28,7 +26,13 @@
 Hello from main2.cc
 """
 
-test.run_built_executable('program1', chdir='relocate/src', stdout=expect1)
-test.run_built_executable('program2', chdir='relocate/src', stdout=expect2)
+if test.format == 'xcode':
+  chdir1 = 'relocate/src/subdir1'
+  chdir2 = 'relocate/src/subdir2'
+else:
+  chdir1 = chdir2 = 'relocate/src'
 
+test.run_built_executable('program1', chdir=chdir1, stdout=expect1)
+test.run_built_executable('program2', chdir=chdir2, stdout=expect2)
+
 test.pass_test()