message: tau contract test: check that output isn't empty
diff: @@ -12,5 +12,8 @@ TAU=$(spack location -i tau)/bin/tau_exec
  mpiexec -np 2 ${TAU} ${build_dir}/bin/adios2-variables-shapes-cpp
  +[ ! -f profile.0.0.0 ] || [ ! -s profile.0.0.0 ] && { echo "Error: file profile.0.0.0 not found or empty"; exit 1; }
  +[ ! -f profile.1.0.0 ] || [ ! -s profile.1.0.0 ] && { echo "Error: file profile.1.0.0 not found or empty"; exit 1; }
  +
  cat profile.0.0.0
  cat profile.1.0.0
  