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 "utils/UnitTest/Test.h"
11 #include <stdlib.h>
12 
13 TEST(LlvmLibcStrlcatTest, TooBig) {
14   const char *str = "cd";
15   char buf[4]{"ab"};
16   EXPECT_EQ(__llvm_libc::strlcat(buf, str, 3), size_t(4));
17   EXPECT_STREQ(buf, "ab");
18   EXPECT_EQ(__llvm_libc::strlcat(buf, str, 4), size_t(4));
19   EXPECT_STREQ(buf, "abc");
20 }
21 
22 TEST(LlvmLibcStrlcatTest, Smaller) {
23   const char *str = "cd";
24   char buf[7]{"ab"};
25 
26   EXPECT_EQ(__llvm_libc::strlcat(buf, str, 7), size_t(4));
27   EXPECT_STREQ(buf, "abcd");
28 }
29 
30 TEST(LlvmLibcStrlcatTest, No0) {
31   const char *str = "cd";
32   char buf[7]{"ab"};
33   EXPECT_EQ(__llvm_libc::strlcat(buf, str, 1), size_t(3));
34   EXPECT_STREQ(buf, "ab");
35   EXPECT_EQ(__llvm_libc::strlcat(buf, str, 2), size_t(4));
36   EXPECT_STREQ(buf, "ab");
37 }
38