1 //===-- Unittests for strlcat ---------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "src/string/strlcat.h"
10 #include "test/UnitTest/Test.h"
11
TEST(LlvmLibcStrlcatTest,TooBig)12 TEST(LlvmLibcStrlcatTest, TooBig) {
13 const char *str = "cd";
14 char buf[4]{"ab"};
15 EXPECT_EQ(LIBC_NAMESPACE::strlcat(buf, str, 3), size_t(4));
16 EXPECT_STREQ(buf, "ab");
17 EXPECT_EQ(LIBC_NAMESPACE::strlcat(buf, str, 4), size_t(4));
18 EXPECT_STREQ(buf, "abc");
19 }
20
TEST(LlvmLibcStrlcatTest,Smaller)21 TEST(LlvmLibcStrlcatTest, Smaller) {
22 const char *str = "cd";
23 char buf[7]{"ab"};
24
25 EXPECT_EQ(LIBC_NAMESPACE::strlcat(buf, str, 7), size_t(4));
26 EXPECT_STREQ(buf, "abcd");
27 }
28
TEST(LlvmLibcStrlcatTest,SmallerNoOverwriteAfter0)29 TEST(LlvmLibcStrlcatTest, SmallerNoOverwriteAfter0) {
30 const char *str = "cd";
31 char buf[8]{"ab\0\0efg"};
32
33 EXPECT_EQ(LIBC_NAMESPACE::strlcat(buf, str, 8), size_t(4));
34 EXPECT_STREQ(buf, "abcd");
35 EXPECT_STREQ(buf + 5, "fg");
36 }
37
TEST(LlvmLibcStrlcatTest,No0)38 TEST(LlvmLibcStrlcatTest, No0) {
39 const char *str = "cd";
40 char buf[7]{"ab"};
41 EXPECT_EQ(LIBC_NAMESPACE::strlcat(buf, str, 1), size_t(3));
42 EXPECT_STREQ(buf, "ab");
43 EXPECT_EQ(LIBC_NAMESPACE::strlcat(buf, str, 2), size_t(4));
44 EXPECT_STREQ(buf, "ab");
45 }
46