Coverage for /pythoncovmergedfiles/medio/medio/src/fuzz_sax.py: 41%

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 

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 

30import io 

31from test_utils import is_expected_error 

32 

33with atheris.instrument_imports(): 

34 from lxml import sax, etree 

35 

36 

37def TestOneInput(data): 

38 try: 

39 f = io.BytesIO(data) 

40 parsed = etree.parse(f) 

41 

42 handler = sax.ElementTreeContentHandler() 

43 sax.ElementTreeProducer(parsed, handler).saxify() 

44 except (etree.LxmlError, etree.LxmlSyntaxError): 

45 return -1 # Reject so the input will not be added to the corpus. 

46 except (ValueError, IndexError, AttributeError) as e: 

47 if "lxml.sax.ElementTreeContentHandler.processingInstruction" in str(e): 

48 # This possibility is a bug and tracked here: https://bugs.launchpad.net/lxml/+bug/2011542 

49 return 0 # Accept the input in the corpus to enable regression testing when fixed. 

50 elif is_expected_error(["Invalid", "has no attribute"], e): 

51 return -1 

52 else: 

53 raise e 

54 

55 

56def main(): 

57 atheris.Setup(sys.argv, TestOneInput) 

58 atheris.Fuzz() 

59 

60 

61if __name__ == "__main__": 

62 main()