libc/test/src/string/strdup_test.cpp

   1 //===-- Unittests for strdup ----------------------------------------------===//
   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/errno/libc_errno.h"
  10 #include "src/string/strdup.h"
  11 #include "test/UnitTest/Test.h"
  12
  13 TEST(LlvmLibcStrDupTest, EmptyString) {
  14   const char *empty = "";
  15
  16   LIBC_NAMESPACE::libc_errno = 0;
  17   char *result = LIBC_NAMESPACE::strdup(empty);
  18   ASSERT_ERRNO_SUCCESS();
  19
  20   ASSERT_NE(result, static_cast<char *>(nullptr));
  21   ASSERT_NE(empty, const_cast<const char *>(result));
  22   ASSERT_STREQ(empty, result);
  23   ::free(result);
  24 }
  25
  26 TEST(LlvmLibcStrDupTest, AnyString) {
  27   const char *abc = "abc";
  28
  29   LIBC_NAMESPACE::libc_errno = 0;
  30   char *result = LIBC_NAMESPACE::strdup(abc);
  31   ASSERT_ERRNO_SUCCESS();
  32
  33   ASSERT_NE(result, static_cast<char *>(nullptr));
  34   ASSERT_NE(abc, const_cast<const char *>(result));
  35   ASSERT_STREQ(abc, result);
  36   ::free(result);
  37 }
  38
  39 TEST(LlvmLibcStrDupTest, NullPtr) {
  40   LIBC_NAMESPACE::libc_errno = 0;
  41   char *result = LIBC_NAMESPACE::strdup(nullptr);
  42   ASSERT_ERRNO_SUCCESS();
  43
  44   ASSERT_EQ(result, static_cast<char *>(nullptr));
  45 }