Coverage for /pythoncovmergedfiles/medio/medio/src/fuzz_mime.py: 60%
50 statements
« prev ^ index » next coverage.py v7.2.7, created at 2023-06-07 06:37 +0000
« prev ^ index » next coverage.py v7.2.7, created at 2023-06-07 06:37 +0000
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.
27import os
28import sys
29import atheris
31with atheris.instrument_imports(enable_loader_override=False):
32 from xdg import Mime
33 from xdg.Exceptions import ParsingError
35@atheris.instrument_func
36def TestOneInput(input_bytes):
37 # We need to make the file an absolute path
38 testfile_path = os.path.join(os.getcwd(), "testfile.tmp")
39 with open(testfile_path, "wb") as f:
40 f.write(input_bytes)
42 # Test basic Mime API
43 Mime.get_type2(testfile_path)
44 Mime.get_type_by_contents(testfile_path)
45 Mime.get_type_by_data(input_bytes)
47 # Test GlobDB
48 globs = Mime.GlobDB()
49 try:
50 globs.merge_file(testfile_path)
51 globs.merge_file(testfile_path)
52 except UnicodeError as e:
53 pass
54 except ValueError as e:
55 if (
56 "not enough values to unpack" in str(e) or
57 "invalid literal for int" in str(e)
58 ):
59 pass
60 else:
61 raise e
63 # Test MagicDB
64 magic = Mime.MagicDB()
65 try:
66 magic.merge_file(testfile_path)
67 magic.finalise()
68 except UnicodeDecodeError:
69 pass
70 except (OSError, ValueError) as e:
71 msg = str(e)
72 if (
73 "Not a MIME magic file" in msg or
74 "Malformed section heading" in msg
75 ):
76 pass
77 else:
78 raise e
80 # Cleanup
81 os.remove(testfile_path)
84def main():
85 atheris.instrument_all()
86 atheris.Setup(sys.argv, TestOneInput, enable_python_coverage=True)
87 atheris.Fuzz()
90if __name__ == "__main__":
91 main()