SceneCacheFilterFormatTest : Allow running on macOS outside of CI

Author: murraystevenson

contrib/IECoreUSD/test/IECoreUSD/SceneCacheFileFormatTest.py

@@ -47,7 +47,7 @@
 import IECoreScene
 import IECoreUSD
 
-@unittest.skipIf( sys.platform == 'darwin', "plugInfo.json fails to register on GitHub Actions Macos container." )
+@unittest.skipIf( IECore.TestUtil.inMacCI(), "plugInfo.json fails to register on GitHub Actions macOS container." )
 class SceneCacheFileFormatTest( unittest.TestCase ) :
 
 	def setUp( self ) :