1 // Copyright 2022 The Chromium Authors
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 //     https://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 
15 #include "string_util.h"
16 #include <gtest/gtest.h>
17 
18 BSSL_NAMESPACE_BEGIN
19 
20 namespace {
21 
TEST(StringUtilTest,IsAscii)22 TEST(StringUtilTest, IsAscii) {
23   EXPECT_TRUE(bssl::string_util::IsAscii(""));
24   EXPECT_TRUE(bssl::string_util::IsAscii("mail.google.com"));
25   EXPECT_TRUE(bssl::string_util::IsAscii("mail.google.com\x7F"));
26   EXPECT_FALSE(bssl::string_util::IsAscii("mail.google.com\x80"));
27   EXPECT_FALSE(bssl::string_util::IsAscii("mail.google.com\xFF"));
28 }
29 
TEST(StringUtilTest,IsEqualNoCase)30 TEST(StringUtilTest, IsEqualNoCase) {
31   EXPECT_TRUE(bssl::string_util::IsEqualNoCase("", ""));
32   EXPECT_TRUE(
33       bssl::string_util::IsEqualNoCase("mail.google.com", "maIL.GOoGlE.cOm"));
34   EXPECT_TRUE(bssl::string_util::IsEqualNoCase("MAil~-.google.cOm",
35                                                "maIL~-.gOoGlE.CoM"));
36   EXPECT_TRUE(bssl::string_util::IsEqualNoCase("mail\x80.google.com",
37                                                "maIL\x80.GOoGlE.cOm"));
38   EXPECT_TRUE(bssl::string_util::IsEqualNoCase("mail\xFF.google.com",
39                                                "maIL\xFF.GOoGlE.cOm"));
40   EXPECT_FALSE(
41       bssl::string_util::IsEqualNoCase("mail.google.co", "maIL.GOoGlE.cOm"));
42   EXPECT_FALSE(
43       bssl::string_util::IsEqualNoCase("mail.google.com", "maIL.GOoGlE.cO"));
44 }
45 
TEST(StringUtilTest,EndsWithNoCase)46 TEST(StringUtilTest, EndsWithNoCase) {
47   EXPECT_TRUE(bssl::string_util::EndsWithNoCase("", ""));
48   EXPECT_TRUE(bssl::string_util::EndsWithNoCase("mail.google.com", ""));
49   EXPECT_TRUE(
50       bssl::string_util::EndsWithNoCase("mail.google.com", "maIL.GOoGlE.cOm"));
51   EXPECT_TRUE(
52       bssl::string_util::EndsWithNoCase("mail.google.com", ".gOoGlE.cOm"));
53   EXPECT_TRUE(
54       bssl::string_util::EndsWithNoCase("MAil~-.google.cOm", "-.gOoGlE.CoM"));
55   EXPECT_TRUE(bssl::string_util::EndsWithNoCase("mail\x80.google.com",
56                                                 "\x80.GOoGlE.cOm"));
57   EXPECT_FALSE(
58       bssl::string_util::EndsWithNoCase("mail.google.com", "pOoGlE.com"));
59   EXPECT_FALSE(bssl::string_util::EndsWithNoCase("mail\x80.google.com",
60                                                  "\x81.GOoGlE.cOm"));
61   EXPECT_FALSE(
62       bssl::string_util::EndsWithNoCase("mail.google.co", ".GOoGlE.cOm"));
63   EXPECT_FALSE(
64       bssl::string_util::EndsWithNoCase("mail.google.com", ".GOoGlE.cO"));
65   EXPECT_FALSE(
66       bssl::string_util::EndsWithNoCase("mail.google.com", "mail.google.com1"));
67   EXPECT_FALSE(
68       bssl::string_util::EndsWithNoCase("mail.google.com", "1mail.google.com"));
69 }
70 
TEST(StringUtilTest,FindAndReplace)71 TEST(StringUtilTest, FindAndReplace) {
72   std::string tester = "hoobla derp hoobla derp porkrind";
73   tester = bssl::string_util::FindAndReplace(tester, "blah", "woof");
74   EXPECT_EQ(tester, "hoobla derp hoobla derp porkrind");
75   tester = bssl::string_util::FindAndReplace(tester, "", "yeet");
76   EXPECT_EQ(tester, "hoobla derp hoobla derp porkrind");
77   tester = bssl::string_util::FindAndReplace(tester, "hoobla", "derp");
78   EXPECT_EQ(tester, "derp derp derp derp porkrind");
79   tester = bssl::string_util::FindAndReplace(tester, "derp", "a");
80   EXPECT_EQ(tester, "a a a a porkrind");
81   tester = bssl::string_util::FindAndReplace(tester, "a ", "");
82   EXPECT_EQ(tester, "porkrind");
83   tester = bssl::string_util::FindAndReplace(tester, "porkrind", "");
84   EXPECT_EQ(tester, "");
85 }
86 
TEST(StringUtilTest,StartsWithNoCase)87 TEST(StringUtilTest, StartsWithNoCase) {
88   EXPECT_TRUE(bssl::string_util::StartsWithNoCase("", ""));
89   EXPECT_TRUE(bssl::string_util::StartsWithNoCase("mail.google.com", ""));
90   EXPECT_TRUE(bssl::string_util::StartsWithNoCase("mail.google.com",
91                                                   "maIL.GOoGlE.cOm"));
92   EXPECT_TRUE(bssl::string_util::StartsWithNoCase("mail.google.com", "MaIL."));
93   EXPECT_TRUE(
94       bssl::string_util::StartsWithNoCase("MAil~-.google.cOm", "maiL~-.Goo"));
95   EXPECT_TRUE(
96       bssl::string_util::StartsWithNoCase("mail\x80.google.com", "MAIL\x80."));
97   EXPECT_FALSE(
98       bssl::string_util::StartsWithNoCase("mail.google.com", "maIl.MoO"));
99   EXPECT_FALSE(
100       bssl::string_util::StartsWithNoCase("mail\x80.google.com", "Mail\x81"));
101   EXPECT_FALSE(
102       bssl::string_util::StartsWithNoCase("mai.google.co", "MAiL.GoogLE"));
103   EXPECT_FALSE(
104       bssl::string_util::StartsWithNoCase("mail.google.com", "MaI.GooGLE"));
105   EXPECT_FALSE(bssl::string_util::StartsWithNoCase("mail.google.com",
106                                                    "mail.google.com1"));
107   EXPECT_FALSE(bssl::string_util::StartsWithNoCase("mail.google.com",
108                                                    "1mail.google.com"));
109 }
110 
TEST(StringUtilTest,HexEncode)111 TEST(StringUtilTest, HexEncode) {
112   std::string hex(bssl::string_util::HexEncode({}));
113   EXPECT_EQ(hex.length(), 0U);
114   uint8_t bytes[] = {0x01, 0xff, 0x02, 0xfe, 0x03, 0x80, 0x81};
115   hex = bssl::string_util::HexEncode(bytes);
116   EXPECT_EQ(hex, "01FF02FE038081");
117 }
118 
TEST(StringUtilTest,NumberToDecimalString)119 TEST(StringUtilTest, NumberToDecimalString) {
120   std::string number(bssl::string_util::NumberToDecimalString(42));
121   EXPECT_EQ(number, "42");
122   number = bssl::string_util::NumberToDecimalString(-1);
123   EXPECT_EQ(number, "-1");
124   number = bssl::string_util::NumberToDecimalString(0);
125   EXPECT_EQ(number, "0");
126   number = bssl::string_util::NumberToDecimalString(0xFF);
127   EXPECT_EQ(number, "255");
128 }
129 
TEST(StringUtilTest,SplitString)130 TEST(StringUtilTest, SplitString) {
131   EXPECT_EQ(bssl::string_util::SplitString("", ','),
132             std::vector<std::string_view>());
133 
134   EXPECT_EQ(bssl::string_util::SplitString("a", ','),
135             std::vector<std::string_view>({"a"}));
136   EXPECT_EQ(bssl::string_util::SplitString("abc", ','),
137             std::vector<std::string_view>({"abc"}));
138 
139   EXPECT_EQ(bssl::string_util::SplitString(",", ','),
140             std::vector<std::string_view>({"", ""}));
141 
142   EXPECT_EQ(bssl::string_util::SplitString("a,", ','),
143             std::vector<std::string_view>({"a", ""}));
144   EXPECT_EQ(bssl::string_util::SplitString("abc,", ','),
145             std::vector<std::string_view>({"abc", ""}));
146 
147   EXPECT_EQ(bssl::string_util::SplitString(",a", ','),
148             std::vector<std::string_view>({"", "a"}));
149   EXPECT_EQ(bssl::string_util::SplitString(",abc", ','),
150             std::vector<std::string_view>({"", "abc"}));
151 
152   EXPECT_EQ(bssl::string_util::SplitString("a,b", ','),
153             std::vector<std::string_view>({"a", "b"}));
154   EXPECT_EQ(bssl::string_util::SplitString("abc,def", ','),
155             std::vector<std::string_view>({"abc", "def"}));
156 
157   EXPECT_EQ(bssl::string_util::SplitString("a,,b", ','),
158             std::vector<std::string_view>({"a", "", "b"}));
159   EXPECT_EQ(bssl::string_util::SplitString("abc,,def", ','),
160             std::vector<std::string_view>({"abc", "", "def"}));
161 }
162 
163 }  // namespace
164 
165 BSSL_NAMESPACE_END
166