mirror of https://github.com/google/oss-fuzz.git
69 lines
2.2 KiB
Python
69 lines
2.2 KiB
Python
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#!/usr/bin/python3
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# Copyright 2023 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import os
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import sys
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import atheris
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import cachetools
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import random
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import datetime
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from threading import Lock
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def get_ttu(_key, value, now):
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# assume value.ttl contains the item's time-to-live in hours
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return datetime.datetime.now() + random.random() * datetime.timedelta(days=200000)
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def TestOneInput(data):
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fdp = atheris.FuzzedDataProvider(data)
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cache_size = fdp.ConsumeIntInRange(1,32)
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cache_ttl = fdp.ConsumeProbability()
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cache_lock = None
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if fdp.ConsumeBool():
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cache_lock = Lock()
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# Random caching types
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CACHE_TYPES = [
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{},
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cachetools.FIFOCache(maxsize=cache_size),
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cachetools.LFUCache(maxsize=cache_size),
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cachetools.LRUCache(maxsize=cache_size),
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cachetools.MRUCache(maxsize=cache_size),
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cachetools.RRCache(maxsize=cache_size, choice=random.choice),
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cachetools.TTLCache(maxsize=cache_size, ttl=cache_ttl),
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cachetools.TLRUCache(maxsize=cache_size, ttu=get_ttu, timer=datetime.datetime.now)
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]
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# Generate a random cached function
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@cachetools.cached(cache=fdp.PickValueInList(CACHE_TYPES), lock=cache_lock, info=fdp.ConsumeBool())
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def fib(n):
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return n if n < 2 else fib(n - 1) + fib(n - 2)
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for i in range(20):
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fib(fdp.ConsumeIntInRange(1, 20))
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# Try and get coverage of different properties
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try:
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fib.maxsize()
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fib.currsize()
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except AttributeError:
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pass
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def main():
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atheris.Setup(sys.argv, TestOneInput)
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atheris.Fuzz()
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if __name__ == "__main__":
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atheris.instrument_all()
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main()
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