1 /*
2 Copyright (c) 2017, 2020, Oracle and/or its affiliates. All rights reserved.
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License, version 2.0,
6 as published by the Free Software Foundation.
7
8 This program is also distributed with certain software (including
9 but not limited to OpenSSL) that is licensed under separate terms,
10 as designated in a particular file or component or in included license
11 documentation. The authors of MySQL hereby grant you an additional
12 permission to link the program and your derivative works with the
13 separately licensed software that they have included with MySQL.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 */
24
25 #include <thread>
26
27 #include <gmock/gmock.h>
28 #include <gtest/gtest.h>
29
30 #include "common.h"
31
32 using ::testing::StrEq;
33
TEST(TestCommon,truncate_string)34 TEST(TestCommon, truncate_string) {
35 // This test tests truncate_string() and truncate_string_r(). Since both
36 // utilize the same backend, common functionality tests are ran only on
37 // truncate_string().
38
39 using mysql_harness::truncate_string;
40 using mysql_harness::truncate_string_r;
41
42 constexpr size_t kMinMaxLen = 6; // max_len less than this triggers assertion
43
44 // simple case
45 {
46 const std::string s = "1234567890";
47 size_t len = s.size();
48 EXPECT_TRUE(truncate_string(s, len + 1) == s);
49 EXPECT_TRUE(truncate_string(s, len + 0) == s);
50 EXPECT_THAT(truncate_string(s, len - 1), StrEq("123456..."));
51 }
52
53 // max_len too short
54 // This test doesn't work in Windows or FreeBSD, because of how ASSERT_DEATH
55 // works It also fails on release version
56 #if !defined(_WIN32) && !defined(__FreeBSD__) && !defined(NDEBUG)
57 { ASSERT_DEATH(truncate_string("123456", kMinMaxLen - 1), ""); }
58 #endif
59
60 // string len = kMinMaxLen
61 {
62 const std::string s = "123456";
63 size_t len = s.size();
64 EXPECT_TRUE(truncate_string(s, len + 1) == s);
65 EXPECT_TRUE(truncate_string(s, len + 0) == s);
66 // testing with len-1 would trigger assertion, as shown in the previous test
67 }
68
69 // short string
70 {
71 const std::string s = "1";
72 EXPECT_TRUE(truncate_string(s, kMinMaxLen) == s);
73 }
74
75 // empty string
76 {
77 const std::string s = "";
78 EXPECT_TRUE(truncate_string(s, kMinMaxLen) == s);
79 }
80
81 // thread-safety test
82 {
83 const std::string &r1 = truncate_string("1234567890", 8);
84
85 std::thread([]() {
86 const std::string &r2 = truncate_string("abcdefghij", 8);
87 EXPECT_THAT(r2, StrEq("abcde..."));
88 }).join();
89
90 // call to truncate_string() in another thread should not overwrite this
91 // result
92 EXPECT_THAT(r1, StrEq("12345..."));
93
94 // but calling it in this thread will (this funcionality is not a
95 // requirement, the test only demonstrates the weakness)
96 truncate_string("blablabla", 8);
97 EXPECT_THAT(r1, StrEq("blabl..."));
98 }
99
100 // re-entry test (using truncate_string_r() instead of truncate_string())
101 {
102 const std::string &r1 = truncate_string_r("1234567890", 8);
103
104 std::thread([]() {
105 const std::string &r2 = truncate_string_r("abcdefghij", 8);
106 EXPECT_THAT(r2, StrEq("abcde..."));
107 }).join();
108
109 // call to truncate_string_r() in another thread should not overwrite this
110 // result
111 EXPECT_THAT(r1, StrEq("12345..."));
112
113 // call to truncate_string_r() in this thread should not overwrite this
114 // result
115 truncate_string_r("blablabla", 8);
116 EXPECT_THAT(r1, StrEq("12345..."));
117 }
118 }
119
TEST(TestCommon,SerialComma)120 TEST(TestCommon, SerialComma) {
121 using mysql_harness::serial_comma;
122
123 auto expect_output = [](int count, const std::string &expect) {
124 constexpr int primes[]{2, 3, 5, 7, 11};
125
126 std::string res = "Primes are ";
127 res += serial_comma(&primes[0], &primes[count]);
128 EXPECT_EQ(res, "Primes are " + expect);
129 };
130
131 expect_output(1, "2");
132 expect_output(2, "2 and 3");
133 expect_output(3, "2, 3, and 5");
134 expect_output(5, "2, 3, 5, 7, and 11");
135 }
136
main(int argc,char ** argv)137 int main(int argc, char **argv) {
138 ::testing::InitGoogleTest(&argc, argv);
139 return RUN_ALL_TESTS();
140 }
141