libc/test/src/string/strsep_test.cpp

   1 //===-- Unittests for strsep ----------------------------------------------===//
   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/strsep.h"
  10 #include "test/UnitTest/Test.h"
  11
  12 TEST(LlvmLibcStrsepTest, NullSrc) {
  13   char *string = nullptr;
  14   EXPECT_STREQ(LIBC_NAMESPACE::strsep(&string, ""), nullptr);
  15 }
  16
  17 TEST(LlvmLibcStrsepTest, NoTokenFound) {
  18   {
  19     char s[] = "";
  20     char *string = s, *orig = s;
  21     EXPECT_STREQ(LIBC_NAMESPACE::strsep(&string, ""), nullptr);
  22     EXPECT_EQ(orig, string);
  23   }
  24   {
  25     char s[] = "abcde";
  26     char *string = s, *orig = s;
  27     EXPECT_STREQ(LIBC_NAMESPACE::strsep(&string, ""), orig);
  28     EXPECT_EQ(string, orig + 5);
  29   }
  30   {
  31     char s[] = "abcde";
  32     char *string = s, *orig = s;
  33     EXPECT_STREQ(LIBC_NAMESPACE::strsep(&string, "fghijk"), orig);
  34     EXPECT_EQ(string, orig + 5);
  35   }
  36 }
  37
  38 TEST(LlvmLibcStrsepTest, TokenFound) {
  39   char s[] = "abacd";
  40   char *string = s;
  41   EXPECT_STREQ(LIBC_NAMESPACE::strsep(&string, "c"), "aba");
  42   EXPECT_STREQ(string, "d");
  43 }
  44
  45 TEST(LlvmLibcStrsepTest, DelimitersShouldNotBeIncludedInToken) {
  46   char s[] = "__ab__:cd_:_ef_:_";
  47   char *string = s;
  48   const char *expected[] = {"", "",   "ab", "", "", "cd",   "",
  49                             "", "ef", "",   "", "", nullptr};
  50   for (int i = 0; expected[i]; i++) {
  51     ASSERT_STREQ(LIBC_NAMESPACE::strsep(&string, "_:"), expected[i]);
  52   }
  53 }