1 /*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "util.h"
18
19 #include <errno.h>
20 #include <gtest/gtest.h>
21
TEST(util,read_file_ENOENT)22 TEST(util, read_file_ENOENT) {
23 std::string s("hello");
24 errno = 0;
25 EXPECT_FALSE(read_file("/proc/does-not-exist", &s));
26 EXPECT_EQ(ENOENT, errno);
27 EXPECT_EQ("", s); // s was cleared.
28 }
29
TEST(util,read_file_success)30 TEST(util, read_file_success) {
31 std::string s("hello");
32 EXPECT_TRUE(read_file("/proc/version", &s));
33 EXPECT_GT(s.length(), 6U);
34 EXPECT_EQ('\n', s[s.length() - 1]);
35 s[5] = 0;
36 EXPECT_STREQ("Linux", s.c_str());
37 }
38
TEST(util,decode_uid)39 TEST(util, decode_uid) {
40 EXPECT_EQ(0U, decode_uid("root"));
41 EXPECT_EQ(-1U, decode_uid("toot"));
42 EXPECT_EQ(123U, decode_uid("123"));
43 }
44