Added 'set -e' into tests/memfile/run-test.sh
Added 'set -e' into tests/memfile/run-test.sh

Also added two checks for situations where the execution must fail.

Signed-off-by: Rodrigo Alejandro Melo <722cce7a38226a5627f1a1f67c8fb6d245d8d795@inti.gob.ar>

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