Coverage for /pythoncovmergedfiles/medio/medio/src/fuzz_resources.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 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 atheris 

28import sys 

29import mock 

30 

31with atheris.instrument_imports(): 

32 from google.cloud.logging_v2.handlers import _monitored_resources 

33 

34 

35global_fdp = None 

36def mock_retrieve_metadata_server(endpoint): 

37 """Mock for retrieve_metadata_server""" 

38 if global_fdp is None: 

39 return None 

40 if global_fdp.ConsumeIntInRange(1, 10) < 3: 

41 return None 

42 return global_fdp.ConsumeUnicodeNoSurrogates(30) 

43 

44def TestInput(data): 

45 global global_fdp 

46 global_fdp = atheris.FuzzedDataProvider(data) 

47 

48 # Mock the metadata server to avoid connections. The 

49 # retrieve_metadata_server will return fuzzer-seeded data. 

50 patch = mock.patch( 

51 "google.cloud.logging_v2.handlers._monitored_resources.retrieve_metadata_server", 

52 wraps=mock_retrieve_metadata_server, 

53 ) 

54 # TODO: randomise relevant environment variables. 

55 with patch: 

56 _monitored_resources.detect_resource() 

57 

58 

59def main(): 

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

61 atheris.Fuzz() 

62 

63if __name__ == "__main__": 

64 main()