Add TestGypXcodeNinja to run tests against the xcode-ninja generator

test/mac/gyptest-strip.py

Index: test/mac/gyptest-strip.py
diff --git a/test/mac/gyptest-strip.py b/test/mac/gyptest-strip.py
index e2c06c13589eb8359b9828dbadcdef192040572d..cc4d73e78eec42fce61dc32929fddd4527bdf6b3 100755
--- a/test/mac/gyptest-strip.py
+++ b/test/mac/gyptest-strip.py
@@ -19,7 +19,9 @@ import time
 if sys.platform == 'darwin':
   test = TestGyp.TestGyp(formats=['ninja', 'make', 'xcode'])
 
-  test.run_gyp('test.gyp', chdir='strip')
+  test.run_gyp('test.gyp',
+               '-G', 'xcode_ninja_target_pattern=^.*$',
+               chdir='strip')
 
   test.build('test.gyp', test.ALL, chdir='strip')
 
@@ -41,7 +43,8 @@ if sys.platform == 'darwin':
   # with Xcode 5.0 or higher, take this additional symbol into consideration
   # for unstripped builds (it is stripped by all strip commands).
   expected_extra_symbol_count = 0
-  if test.format == 'ninja' and TestMac.Xcode.Version() >= '0500':
+  if test.format in ['ninja', 'xcode-ninja'] \
+      and TestMac.Xcode.Version() >= '0500':
     expected_extra_symbol_count = 1
 
   # The actual numbers here are not interesting, they just need to be the same