Comment (by Samuel Cupp):

Additionally, the test shouldn’t try to output 2D or 3D data, since that’ll be way too much for the testsuite to compare against. I’d recommend removing all the extra wave extraction, 2D/3D output, TerminationTrigger, etc. Basically make it as lightweight as possible.

To get the test to run successfully, you also need to have a directory DNSdata/test/CactusSgrid_test. The expected output for the test should live here.

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2747/inclusion-of-sgrid-importer-in-einstein