Coverage for /pythoncovmergedfiles/medio/medio/src/fuzz_formulae.py: 39%

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 

13#!/usr/bin/python3 

14# Copyright 2022 Google LLC 

15# 

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

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

18# You may obtain a copy of the License at 

19# 

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

21# 

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

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

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

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

26# limitations under the License. 

27 

28import atheris 

29import sys 

30with atheris.instrument_imports(): 

31 from openpyxl.formula.tokenizer import * 

32 from openpyxl.formula.translate import * 

33 

34def TestInput(data): 

35 fdp = atheris.FuzzedDataProvider(data) 

36 

37 try: 

38 #Initial tokenizer for random string and process it 

39 Tokenizer(fdp.ConsumeString(200)) 

40 

41 #Translate random string formulae 

42 Translator(fdp.ConsumeString(200), origin="A1").translate_formula("B2") 

43 except IndexError as e: 

44 if 'empty list' not in str(e): 

45 raise e 

46 except (TokenizerError, TranslatorError): 

47 # Internal error handling is expected 

48 pass 

49 

50def main(): 

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

52 atheris.Fuzz() 

53 

54if __name__ == "__main__": 

55 main()