Coverage for /pythoncovmergedfiles/medio/medio/src/fuzz_model.py: 57%

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 os 

28import sys 

29import atheris 

30import json 

31 

32from serde import Model, fields 

33from serde.exceptions import ValidationError 

34 

35 

36def TestOneInput(data): 

37 fdp = atheris.FuzzedDataProvider(data) 

38 

39 # Create an arbitrary Model structure 

40 class NE(Model): 

41 a = fields.Int() 

42 

43 class E1(Model): 

44 a = fields.Int() 

45 b = fields.Str() 

46 c = fields.Nested(NE) 

47 d = fields.Optional(fields.Int, default=42) 

48 e = fields.Float() 

49 f = fields.DateTime() 

50 

51 # Create random dictionary 

52 try: 

53 fuzzed_dict = json.loads(fdp.ConsumeString(sys.maxsize)) 

54 except json.JSONDecodeError: 

55 return 

56 if type(fuzzed_dict) is not dict: 

57 return 

58 

59 try: 

60 E1.from_dict(fuzzed_dict) 

61 except ValidationError: 

62 pass 

63 

64 

65def main(): 

66 atheris.instrument_all() 

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

68 atheris.Fuzz() 

69 

70 

71if __name__ == "__main__": 

72 main()