1# Copyright 2023 The Android Open Source Project
2#
3# Licensed under the Apache License, Version 2.0 (the "License");
4# you may not use this file except in compliance with the License.
5# You may obtain a copy of the License at
6#
7#     http://www.apache.org/licenses/LICENSE-2.0
8#
9# Unless required by applicable law or agreed to in writing, software
10# distributed under the License is distributed on an "AS IS" BASIS,
11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12# See the License for the specific language governing permissions and
13# limitations under the License.
14"""Tests for policy"""
15
16import unittest
17from policy import MatchPathPrefix
18
19# pylint: disable=missing-docstring
20class PolicyTests(unittest.TestCase):
21    def assertMatches(self, path, prefix):
22        self.assertTrue(MatchPathPrefix(path, prefix))
23
24    def assertDoesNotMatch(self, path, prefix):
25        self.assertFalse(MatchPathPrefix(path, prefix))
26
27    # tests
28
29    def test_match_path_prefix(self):
30        # check common prefix heuristics
31        self.assertMatches("/(vendor|system/vendor)/bin/sh", "/vendor/bin")
32        self.assertMatches("/(vendor|system/vendor)/bin/sh", "/system/vendor/bin"),
33        self.assertMatches("/(odm|vendor/odm)/etc/selinux", "/odm/etc"),
34        self.assertMatches("/(odm|vendor/odm)/etc/selinux", "/vendor/odm/etc"),
35        self.assertMatches("/(system_ext|system/system_ext)/bin/foo", "/system_ext/bin"),
36        self.assertMatches("/(system_ext|system/system_ext)/bin/foo", "/system/system_ext/bin"),
37        self.assertMatches("/(product|system/product)/lib/libc.so", "/product/lib"),
38        self.assertMatches("/(product|system/product)/lib/libc.so", "/system/product/lib"),
39        self.assertDoesNotMatch("/(vendor|system/vendor)/bin/sh", "/system/bin"),
40        self.assertDoesNotMatch("/(odm|vendor/odm)/etc/selinux", "/vendor/etc"),
41        self.assertDoesNotMatch("/(system_ext|system/system_ext)/bin/foo", "/system/bin"),
42        self.assertDoesNotMatch("/(product|system/product)/lib/libc.so", "/system/lib"),
43
44        # check generic regex
45        self.assertMatches("(/.*)+", "/system/etc/vintf")
46        self.assertDoesNotMatch("(/.*)+", "foo/bar/baz")
47
48        self.assertMatches("/(system|product)/lib(64)?(/.*)+.*\.so", "/system/lib/hw/libbaz.so")
49        self.assertMatches("/(system|product)/lib(64)?(/.*)+.*\.so", "/system/lib64/")
50        self.assertMatches("/(system|product)/lib(64)?(/.*)+.*\.so", "/product/lib/hw/libbaz.so")
51        self.assertMatches("/(system|product)/lib(64)?(/.*)+.*\.so", "/product/lib64/")
52        self.assertDoesNotMatch("/(system|product)/lib(64)?(/.*)+.*\.so", "/vendor/lib/hw/libbaz.so")
53        self.assertDoesNotMatch("/(system|product)/lib(64)?(/.*)+.*\.so", "/odm/lib64/")
54
55if __name__ == '__main__':
56    unittest.main(verbosity=2)
57