libc/test/src/string/strpbrk_test.cpp

   1 //===-- Unittests for strpbrk ---------------------------------------------===//
   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/strpbrk.h"
  10
  11 #include "test/UnitTest/Test.h"
  12
  13 TEST(LlvmLibcStrPBrkTest, EmptyStringShouldReturnNullptr) {
  14   // The search should not include the null terminator.
  15   EXPECT_STREQ(LIBC_NAMESPACE::strpbrk("", ""), nullptr);
  16   EXPECT_STREQ(LIBC_NAMESPACE::strpbrk("_", ""), nullptr);
  17   EXPECT_STREQ(LIBC_NAMESPACE::strpbrk("", "_"), nullptr);
  18 }
  19
  20 TEST(LlvmLibcStrPBrkTest, ShouldNotFindAnythingAfterNullTerminator) {
  21   const char src[4] = {'a', 'b', '\0', 'c'};
  22   EXPECT_STREQ(LIBC_NAMESPACE::strpbrk(src, "c"), nullptr);
  23 }
  24
  25 TEST(LlvmLibcStrPBrkTest, ShouldReturnNullptrIfNoCharactersFound) {
  26   EXPECT_STREQ(LIBC_NAMESPACE::strpbrk("12345", "abcdef"), nullptr);
  27 }
  28
  29 TEST(LlvmLibcStrPBrkTest, FindsFirstCharacter) {
  30   const char *src = "12345";
  31   EXPECT_STREQ(LIBC_NAMESPACE::strpbrk(src, "1"), "12345");
  32   EXPECT_STREQ(LIBC_NAMESPACE::strpbrk(src, "-1"), "12345");
  33   EXPECT_STREQ(LIBC_NAMESPACE::strpbrk(src, "1_"), "12345");
  34   EXPECT_STREQ(LIBC_NAMESPACE::strpbrk(src, "f1_"), "12345");
  35   ASSERT_STREQ(src, "12345");
  36 }
  37
  38 TEST(LlvmLibcStrPBrkTest, FindsMiddleCharacter) {
  39   const char *src = "12345";
  40   EXPECT_STREQ(LIBC_NAMESPACE::strpbrk(src, "3"), "345");
  41   EXPECT_STREQ(LIBC_NAMESPACE::strpbrk(src, "?3"), "345");
  42   EXPECT_STREQ(LIBC_NAMESPACE::strpbrk(src, "3F"), "345");
  43   EXPECT_STREQ(LIBC_NAMESPACE::strpbrk(src, "z3_"), "345");
  44   ASSERT_STREQ(src, "12345");
  45 }
  46
  47 TEST(LlvmLibcStrPBrkTest, FindsLastCharacter) {
  48   const char *src = "12345";
  49   EXPECT_STREQ(LIBC_NAMESPACE::strpbrk(src, "5"), "5");
  50   EXPECT_STREQ(LIBC_NAMESPACE::strpbrk(src, "r5"), "5");
  51   EXPECT_STREQ(LIBC_NAMESPACE::strpbrk(src, "59"), "5");
  52   EXPECT_STREQ(LIBC_NAMESPACE::strpbrk(src, "n5_"), "5");
  53   ASSERT_STREQ(src, "12345");
  54 }
  55
  56 TEST(LlvmLibcStrPBrkTest, FindsFirstOfRepeated) {
  57   EXPECT_STREQ(LIBC_NAMESPACE::strpbrk("A,B,C,D", ","), ",B,C,D");
  58 }
  59
  60 TEST(LlvmLibcStrPBrkTest, FindsFirstInBreakset) {
  61   EXPECT_STREQ(LIBC_NAMESPACE::strpbrk("12345", "34"), "345");
  62 }