Coverage for /pythoncovmergedfiles/medio/medio/src/fuzz_zip.py: 50%

1###### Coverage stub 

2import atexit 

3import coverage 

4cov = coverage.coverage(data_file='.coverage', cover_pylib=True) 

5cov.start() 

6# Register an exist handler that will print coverage 

7def exit_handler(): 

8 cov.stop() 

9 cov.save() 

10atexit.register(exit_handler) 

11####### End of coverage stub 

12#!/usr/bin/python3 

13# Copyright 2022 Google LLC 

14# 

15# Licensed under the Apache License, Version 2.0 (the "License"); 

16# you may not use this file except in compliance with the License. 

17# You may obtain a copy of the License at 

18# 

19# http://www.apache.org/licenses/LICENSE-2.0 

20# 

21# Unless required by applicable law or agreed to in writing, software 

22# distributed under the License is distributed on an "AS IS" BASIS, 

23# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 

24# See the License for the specific language governing permissions and 

25# limitations under the License. 

26 

27import atheris 

28import sys 

29import os 

30with atheris.instrument_imports(): 

31 from smart_open import open 

32 import zipfile 

33 import tempfile 

34 

35def TestInput(data): 

36 if len(data) < 10: 

37 return 

38 

39 fdp = atheris.FuzzedDataProvider(data) 

40 

41 tmp = tempfile.NamedTemporaryFile(prefix=fdp.ConsumeString(10), suffix=fdp.ConsumeString(4), delete=False) 

42 filestr = fdp.ConsumeString(100) 

43 

44 with open(tmp.name, 'wb') as f: 

45 with zipfile.ZipFile(f, 'w') as zip: 

46 zip.writestr(fdp.ConsumeString(10), filestr) 

47 zip.writestr(fdp.ConsumeString(10), filestr) 

48 

49 with open(tmp.name, 'rb') as f: 

50 with zipfile.ZipFile(f) as zip: 

51 for info in zip.infolist(): 

52 file_bytes = zip.read(info.filename) 

53 assert filestr == file_bytes.decode('utf-8') 

54 os.unlink(tmp.name) 

55 

56def main(): 

57 atheris.Setup(sys.argv, TestInput, enable_python_coverage=True) 

58 atheris.instrument_all() 

59 atheris.Fuzz() 

60 

61if __name__ == "__main__": 

62 main()