Coverage for /pythoncovmergedfiles/medio/medio/src/fuzz_json_parser.py: 37%

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 2023 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"""This fuzzer script specifically targets the pandas json parser.""" 

27 

28import sys 

29import atheris 

30import pandas as pd 

31import io 

32 

33from pandas.errors import ( 

34 EmptyDataError, 

35 ParserError, 

36) 

37 

38 

39def TestReadJson(data): 

40 fdp = atheris.FuzzedDataProvider(data) 

41 

42 try: 

43 fuzzed_json = fdp.ConsumeUnicode(sys.maxsize) 

44 pd.read_json(io.StringIO(fuzzed_json), orient='index') 

45 except ( 

46 ParserError, # If the data is not valid JSON 

47 EmptyDataError, # If the data is emtpy or contains only whitespaces 

48 ValueError # If the data is not line-delimited JSON format 

49 ): 

50 pass 

51 

52 

53def main(): 

54 atheris.instrument_all() 

55 atheris.Setup(sys.argv, TestReadJson) 

56 atheris.Fuzz() 

57 

58 

59if __name__ == "__main__": 

60 main()