'Check GetFiles artifacts.'

def testFilesArtifact(self):

    with vfs_test_lib.VFSOverrider(rdf_paths.PathSpec.PathType.OS, vfs_test_lib.FakeTestDataVFSHandler):
        self.RunCollectorAndGetCollection(['TestFilesArtifact'], client_mock=self.client_mock)
        urn = self.client_id.Add('fs/os/').Add('var/log/auth.log')
        aff4.FACTORY.Open(urn, aff4_type=aff4_grr.VFSBlobImage, token=self.token)
