bench: Moved boilerplate testcode into test_meta_bench function.     And bench functions are added by test_add_bench, which uses test_meta_bench.
bench: Moved boilerplate testcode into test_meta_bench function.
    And bench functions are added by test_add_bench, which uses test_meta_bench.

WSID/crank-system,WSID/crank-system,WSID/crank-system