Coverage for /pythoncovmergedfiles/medio/medio/src/fuzz_db.py: 44%

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 

29 

30with atheris.instrument_imports(): 

31 import sqlalchemy 

32 from sqlalchemy import ( 

33 create_engine, 

34 insert, 

35 Table, 

36 Column, 

37 Integer, 

38 String, 

39 MetaData 

40 ) 

41 import sqlalchemy_utils as utils 

42 from sqlalchemy.sql import text 

43 from sqlalchemy.exc import SQLAlchemyError 

44 

45@atheris.instrument_func 

46def TestInput(data): 

47 if len(data) < 10: 

48 pass 

49 

50 fdp = atheris.FuzzedDataProvider(data) 

51 

52 db_str = 'sqlite:///fuzz.db' 

53 

54 metadata = MetaData() 

55 fuzz_table = Table('fuzz_table', metadata, 

56 Column('id', Integer, primary_key=True), 

57 Column('Col1', String)) 

58 

59 engine = create_engine(db_str) 

60 metadata.create_all(engine) 

61 

62 if not utils.database_exists(db_str): 

63 utils.create_database(db_str) 

64 assert utils.database_exists(db_str) 

65 

66 try: 

67 with engine.connect() as conn: 

68 conn.execute(text(fdp.ConsumeString(100))) 

69 except (SQLAlchemyError, UnicodeEncodeError) as e: 

70 pass 

71 except ValueError as e: 

72 if "the query contains a null character" not in str(e): 

73 raise e 

74 

75 utils.drop_database(db_str) 

76 assert not utils.database_exists(db_str) 

77def main(): 

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

79 atheris.Fuzz() 

80 

81if __name__ == "__main__": 

82 main()