Test that the new case has actually been created - and has some data:

    {
        enkf_fs_type * fs = enkf_main_mount_alt_fs( enkf_main , "new_not_current_case" , true , false);
        test_assert_not_NULL( fs );
        test_assert_true( enkf_fs_has_node( fs, "PERMZ" , PARAMETER , 0 , 0 , ANALYZED ); 
        enkf_fs_umount( fs );
    }