Add TestGypXcodeNinja to run tests against the xcode-ninja generator

test/mac/gyptest-loadable-module.py

Index: test/mac/gyptest-loadable-module.py
diff --git a/test/mac/gyptest-loadable-module.py b/test/mac/gyptest-loadable-module.py
index 3564aac40c85dcf4d26b8b6a2bf65f26a0a7def0..275ef2ab8da4280293564d078f0834f8b6a2343d 100755
--- a/test/mac/gyptest-loadable-module.py
+++ b/test/mac/gyptest-loadable-module.py
@@ -18,7 +18,10 @@ if sys.platform == 'darwin':
   test = TestGyp.TestGyp(formats=['ninja', 'make', 'xcode'])
 
   CHDIR = 'loadable-module'
-  test.run_gyp('test.gyp', chdir=CHDIR)
+  test.run_gyp('test.gyp',
+               '-G', 'xcode_ninja_target_pattern=^.*$',
+               chdir=CHDIR)
+
   test.build('test.gyp', test.ALL, chdir=CHDIR)
 
   # Binary.