68 lines · cpp
1//===-- Unittests for wcscspn ---------------------------------------------===//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 "hdr/types/size_t.h"10#include "hdr/types/wchar_t.h"11#include "src/wchar/wcscspn.h"12#include "test/UnitTest/Test.h"13 14TEST(LlvmLibcWCSCSpnTest, EmptyStringShouldReturnZeroLengthSpan) {15 // The search should not include the null terminator.16 EXPECT_EQ(LIBC_NAMESPACE::wcscspn(L"", L""), size_t(0));17 EXPECT_EQ(LIBC_NAMESPACE::wcscspn(L"_", L""), size_t(1));18 EXPECT_EQ(LIBC_NAMESPACE::wcscspn(L"", L"_"), size_t(0));19}20 21TEST(LlvmLibcWCSCSpnTest, ShouldNotSpanAnythingAfterNullTerminator) {22 const wchar_t src[4] = {L'a', L'b', L'\0', L'c'};23 EXPECT_EQ(LIBC_NAMESPACE::wcscspn(src, L"de"), size_t(2));24 EXPECT_EQ(LIBC_NAMESPACE::wcscspn(src, L"c"), size_t(2));25 26 // Same goes for the segment to be searched for.27 const wchar_t segment[4] = {L'1', L'2', L'\0', L'3'};28 EXPECT_EQ(LIBC_NAMESPACE::wcscspn(L"3", segment), size_t(1));29}30 31TEST(LlvmLibcWCSCSpnTest, SpanEachIndividualCharacter) {32 const wchar_t *src = L"12345";33 // These are all in the segment.34 EXPECT_EQ(LIBC_NAMESPACE::wcscspn(src, L"1"), size_t(0));35 EXPECT_EQ(LIBC_NAMESPACE::wcscspn(src, L"2"), size_t(1));36 EXPECT_EQ(LIBC_NAMESPACE::wcscspn(src, L"3"), size_t(2));37 EXPECT_EQ(LIBC_NAMESPACE::wcscspn(src, L"4"), size_t(3));38 EXPECT_EQ(LIBC_NAMESPACE::wcscspn(src, L"5"), size_t(4));39}40 41TEST(LlvmLibcWCSCSpnTest, UnmatchedCharacterShouldReturnLength) {42 EXPECT_EQ(LIBC_NAMESPACE::wcscspn(L"a", L"b"), size_t(1));43 EXPECT_EQ(LIBC_NAMESPACE::wcscspn(L"abcdef", L"1"), size_t(6));44 EXPECT_EQ(LIBC_NAMESPACE::wcscspn(L"123", L"4"), size_t(3));45}46 47TEST(LlvmLibcWCSCSpnTest, NonSequentialCharactersShouldNotSpan) {48 const wchar_t *src = L"abc456789";49 EXPECT_EQ(LIBC_NAMESPACE::wcscspn(src, L"_1_abc_2_def_3_"), size_t(0));50 EXPECT_EQ(LIBC_NAMESPACE::wcscspn(src, L"67__34xyz12"), size_t(3));51}52 53TEST(LlvmLibcWCSCSpnTest, ReverseCharacters) {54 // These are all in the string.55 EXPECT_EQ(LIBC_NAMESPACE::wcscspn(L"12345", L"54321"), size_t(0));56 // 1 is not in the span.57 EXPECT_EQ(LIBC_NAMESPACE::wcscspn(L"12345", L"432"), size_t(1));58 // 1 is in the span.59 EXPECT_EQ(LIBC_NAMESPACE::wcscspn(L"12345", L"51"), size_t(0));60}61 62TEST(LlvmLibcWCSCSpnTest, DuplicatedCharactersToBeSearchedForShouldStillMatch) {63 EXPECT_EQ(LIBC_NAMESPACE::wcscspn(L"a", L"aa"), size_t(0));64 EXPECT_EQ(LIBC_NAMESPACE::wcscspn(L"aa", L"aa"), size_t(0));65 EXPECT_EQ(LIBC_NAMESPACE::wcscspn(L"aaa", L"bb"), size_t(3));66 EXPECT_EQ(LIBC_NAMESPACE::wcscspn(L"aaaa", L"bb"), size_t(4));67}68