Coverage for /pythoncovmergedfiles/medio/medio/src/fuzz_xmlschema.py: 27%

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 etree 

35 

36 

37def TestOneInput(data): 

38 """Targets XML schema validation. More APIs should be added""" 

39 try: 

40 schema_raw = etree.parse(io.BytesIO(data)) 

41 valid_tree = etree.parse(io.BytesIO(b"<a><b></b></a>")) 

42 

43 schema = etree.XMLSchema(schema_raw) 

44 schema.validate(valid_tree) 

45 except etree.LxmlError: 

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

47 except (ValueError, TypeError) as e: 

48 expected_exceptions = [ 

49 "Input object has no document", 

50 "Invalid input object", 

51 ] 

52 if is_expected_error(expected_exceptions, e): 

53 return -1 

54 else: 

55 raise e 

56 

57 

58def main(): 

59 atheris.Setup(sys.argv, TestOneInput) 

60 atheris.Fuzz() 

61 

62 

63if __name__ == "__main__": 

64 main()