93 lines · cpp
1//===-- Unittests for strtok ---------------------------------------------===//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-exception6//7//===----------------------------------------------------------------------===//8 9#include "src/string/strtok.h"10#include "test/UnitTest/Test.h"11 12TEST(LlvmLibcStrTokTest, NoTokenFound) {13 char empty[] = "";14 ASSERT_STREQ(LIBC_NAMESPACE::strtok(empty, ""), nullptr);15 ASSERT_STREQ(LIBC_NAMESPACE::strtok(empty, "_"), nullptr);16 17 char single[] = "_";18 ASSERT_STREQ(LIBC_NAMESPACE::strtok(single, ""), "_");19 20 char multiple[] = "1,2";21 ASSERT_STREQ(LIBC_NAMESPACE::strtok(multiple, ":"), "1,2");22}23 24TEST(LlvmLibcStrTokTest, DelimiterAsFirstCharacterShouldBeIgnored) {25 char src[] = ".123";26 ASSERT_STREQ(LIBC_NAMESPACE::strtok(src, "."), "123");27}28 29TEST(LlvmLibcStrTokTest, DelimiterIsMiddleCharacter) {30 char src[] = "12,34";31 ASSERT_STREQ(LIBC_NAMESPACE::strtok(src, ","), "12");32}33 34TEST(LlvmLibcStrTokTest, DelimiterAsLastCharacterShouldBeIgnored) {35 char src[] = "1234:";36 ASSERT_STREQ(LIBC_NAMESPACE::strtok(src, ":"), "1234");37}38 39TEST(LlvmLibcStrTokTest, MultipleDelimiters) {40 char src[] = "12,.34";41 ASSERT_STREQ(LIBC_NAMESPACE::strtok(src, "."), "12,");42 ASSERT_STREQ(LIBC_NAMESPACE::strtok(src, ".,"), "12");43 ASSERT_STREQ(LIBC_NAMESPACE::strtok(src, ",."), "12");44 ASSERT_STREQ(LIBC_NAMESPACE::strtok(src, ":,."), "12");45}46 47TEST(LlvmLibcStrTokTest, ShouldNotGoPastNullTerminator) {48 char src[] = {'1', '2', '\0', ',', '3'};49 ASSERT_STREQ(LIBC_NAMESPACE::strtok(src, ","), "12");50}51 52TEST(LlvmLibcStrTokTest, SubsequentCallsShouldFindFollowingDelimiters) {53 char src[] = "12,34.56";54 char *token = LIBC_NAMESPACE::strtok(src, ",.");55 ASSERT_STREQ(token, "12");56 token = LIBC_NAMESPACE::strtok(nullptr, ",.");57 ASSERT_STREQ(token, "34");58 token = LIBC_NAMESPACE::strtok(nullptr, ",.");59 ASSERT_STREQ(token, "56");60 token = LIBC_NAMESPACE::strtok(nullptr, "_:,_");61 ASSERT_STREQ(token, nullptr);62 // Subsequent calls after hitting the end of the string should also return63 // nullptr.64 token = LIBC_NAMESPACE::strtok(nullptr, "_:,_");65 ASSERT_STREQ(token, nullptr);66}67 68TEST(LlvmLibcStrTokTest, DelimitersShouldNotBeIncludedInToken) {69 char src[] = "__ab__:_cd__:__ef__:__";70 char *token = LIBC_NAMESPACE::strtok(src, "_:");71 ASSERT_STREQ(token, "ab");72 token = LIBC_NAMESPACE::strtok(nullptr, ":_");73 ASSERT_STREQ(token, "cd");74 token = LIBC_NAMESPACE::strtok(nullptr, "_:,");75 ASSERT_STREQ(token, "ef");76 token = LIBC_NAMESPACE::strtok(nullptr, "_:,_");77 ASSERT_STREQ(token, nullptr);78}79 80TEST(LlvmLibcStrTokTest, SubsequentSearchesReturnNull) {81 char src[] = "a";82 ASSERT_STREQ("a", LIBC_NAMESPACE::strtok(src, ":"));83 ASSERT_EQ(LIBC_NAMESPACE::strtok(nullptr, ":"), nullptr);84 ASSERT_EQ(LIBC_NAMESPACE::strtok(nullptr, ":"), nullptr);85}86 87TEST(LlvmLibcStrTokTest, TopBitSet) {88 char top_bit_set_str[] = "hello\x80world";89 ASSERT_STREQ(LIBC_NAMESPACE::strtok(top_bit_set_str, "\x80"), "hello");90 ASSERT_STREQ(LIBC_NAMESPACE::strtok(nullptr, "\x80"), "world");91 ASSERT_EQ(LIBC_NAMESPACE::strtok(nullptr, "\x80"), nullptr);92}93