# Run it using: benchmark.py script bench_bytearray.py --file=original
# https://bitbucket.org/haypo/misc/src/tip/python/benchmark.py

def run_benchmark(bench):
    bench.start_group("non regression")
    for length in ('10**1', '10**3', '10**5', '10**7'):
        bench.timeit('b=bytearray()\nfor i in loops:\n  b += a\nc = bytes(b)',
                     setup='a = b"x"; loops = range(%s)' % length,
                     name="concatenate %s bytes" % length)

    bench.start_group("deleting front, append tail")
    for length in ('10**1', '10**3', '10**5', '10**7'):
        bench.timeit("b[:100] = b''; b.extend(s)",
                     setup="b=bytearray(%s); s=b'x'*100" % length,
                     name="buffer %s bytes" % length)