Coverage for /pythoncovmergedfiles/medio/medio/src/fuzz_parse.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 sys 

28import atheris 

29 

30from coverage.exceptions import NotPython 

31from coverage.parser import PythonParser 

32 

33 

34def TestOneInput(data): 

35 """Fuzzer for PythonParser""" 

36 fdp = atheris.FuzzedDataProvider(data) 

37 

38 t = fdp.ConsumeUnicodeNoSurrogates(1024) 

39 if not t: 

40 return 

41 

42 try: 

43 p = PythonParser(text = t) 

44 p.parse_source() 

45 except (NotPython, MemoryError) as e2: 

46 # Catch Memory error for stack overflows 

47 # Catch NotPython issues raised by coveragepy 

48 pass 

49 except ValueError as e: 

50 if "source code string cannot contain null bytes" in str(e): 

51 # Not interesting 

52 pass 

53 else: 

54 raise e 

55 

56 

57def main(): 

58 atheris.instrument_all() 

59 atheris.Setup(sys.argv, TestOneInput, enable_python_coverage=True) 

60 atheris.Fuzz() 

61 

62 

63if __name__ == "__main__": 

64 main()