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//===-- Unittests for wmemchr ---------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "hdr/types/wchar_t.h"
#include "src/wchar/wmemchr.h"
#include "test/UnitTest/Test.h"
TEST(LlvmLibcWMemChrTest, FindsCharacterAfterNullTerminator) {
// wmemchr should continue searching after a null terminator.
const size_t size = 5;
const wchar_t src[size] = {L'a', L'\0', L'b', L'c', L'\0'};
ASSERT_EQ(LIBC_NAMESPACE::wmemchr(src, L'b', size), (src + 2));
}
TEST(LlvmLibcWMemChrTest, FindsCharacterInNonNullTerminatedCollection) {
const size_t size = 3;
const wchar_t src[size] = {L'a', L'b', L'c'};
ASSERT_EQ(LIBC_NAMESPACE::wmemchr(src, L'b', size), (src + 1));
}
TEST(LlvmLibcWMemChrTest, FindsFirstCharacter) {
const size_t size = 6;
const wchar_t *src = L"abcde";
// Should return original array since 'a' is the first character.
ASSERT_EQ(LIBC_NAMESPACE::wmemchr(src, L'a', size), (src));
}
TEST(LlvmLibcWMemChrTest, FindsMiddleCharacter) {
const size_t size = 6;
const wchar_t *src = L"abcde";
// Should return characters after and including 'c'.
ASSERT_EQ(LIBC_NAMESPACE::wmemchr(src, L'c', size), (src + 2));
}
TEST(LlvmLibcWMemChrTest, FindsLastCharacterThatIsNotNullTerminator) {
const size_t size = 6;
const wchar_t *src = L"abcde";
// Should return 'e' and null terminator.
ASSERT_EQ(LIBC_NAMESPACE::wmemchr(src, L'e', size), (src + 4));
}
TEST(LlvmLibcWMemChrTest, FindsNullTerminator) {
const size_t size = 6;
const wchar_t *src = L"abcde";
// Should return null terminator.
ASSERT_EQ(LIBC_NAMESPACE::wmemchr(src, L'\0', size), (src + 5));
}
TEST(LlvmLibcWMemChrTest, CharacterNotWithinStringShouldReturnNullptr) {
const size_t size = 6;
const wchar_t *src = L"abcde";
// Should return nullptr.
ASSERT_EQ(LIBC_NAMESPACE::wmemchr(src, L'z', size), nullptr);
}
TEST(LlvmLibcWMemChrTest, CharacterNotWithinSizeShouldReturnNullptr) {
const size_t size = 3;
const wchar_t *src = L"abcde";
// Should return nullptr.
ASSERT_EQ(LIBC_NAMESPACE::wmemchr(src, L'd', size), nullptr);
}
TEST(LlvmLibcWMemChrTest, TheSourceShouldNotChange) {
const size_t size = 3;
const wchar_t *src = L"ab";
ASSERT_EQ(LIBC_NAMESPACE::wmemchr(src, L'a', size), src);
ASSERT_TRUE(src[0] == L'a');
ASSERT_TRUE(src[1] == L'b');
ASSERT_EQ(LIBC_NAMESPACE::wmemchr(src, L'c', size), nullptr);
ASSERT_TRUE(src[0] == L'a');
ASSERT_TRUE(src[1] == L'b');
}
TEST(LlvmLibcWMemChrTest, EmptyStringShouldOnlyMatchNullTerminator) {
const size_t size = 1;
const wchar_t *src = L"";
ASSERT_EQ(LIBC_NAMESPACE::wmemchr(src, L'\0', size), src);
ASSERT_EQ(LIBC_NAMESPACE::wmemchr(src, L'c', size), nullptr);
ASSERT_EQ(LIBC_NAMESPACE::wmemchr(src, L'1', size), nullptr);
ASSERT_EQ(LIBC_NAMESPACE::wmemchr(src, L'?', size), nullptr);
}
TEST(LlvmLibcWMemChrTest, SingleRepeatedCharacterShouldReturnFirst) {
const size_t size = 6;
const wchar_t *src = L"XXXXX";
ASSERT_EQ(LIBC_NAMESPACE::wmemchr(src, L'X', size), src);
}
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