af1315c28f
This part of the effort to make all test related pieces into the `test` directory. This helps is excluding test related pieces in a straight forward manner if LLVM_INCLUDE_TESTS is OFF. Future patches will also move the MPFR wrapper and testutils into the 'test' directory.
47 lines
2.0 KiB
C++
47 lines
2.0 KiB
C++
//===-- Unittests for strnlen ---------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "src/string/strnlen.h"
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#include "test/UnitTest/Test.h"
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#include <stddef.h>
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TEST(LlvmLibcStrNLenTest, EmptyString) {
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const char *empty = "";
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ASSERT_EQ(static_cast<size_t>(0), __llvm_libc::strnlen(empty, 0));
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// If N is greater than string length, this should still return 0.
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ASSERT_EQ(static_cast<size_t>(0), __llvm_libc::strnlen(empty, 1));
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}
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TEST(LlvmLibcStrNLenTest, OneCharacterString) {
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const char *single = "X";
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ASSERT_EQ(static_cast<size_t>(1), __llvm_libc::strnlen(single, 1));
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// If N is zero, this should return 0.
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ASSERT_EQ(static_cast<size_t>(0), __llvm_libc::strnlen(single, 0));
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// If N is greater than string length, this should still return 1.
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ASSERT_EQ(static_cast<size_t>(1), __llvm_libc::strnlen(single, 2));
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}
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TEST(LlvmLibcStrNLenTest, ManyCharacterString) {
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const char *many = "123456789";
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ASSERT_EQ(static_cast<size_t>(9), __llvm_libc::strnlen(many, 9));
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// If N is smaller than the string length, it should return N.
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ASSERT_EQ(static_cast<size_t>(3), __llvm_libc::strnlen(many, 3));
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// If N is zero, this should return 0.
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ASSERT_EQ(static_cast<size_t>(0), __llvm_libc::strnlen(many, 0));
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// If N is greater than the string length, this should still return 9.
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ASSERT_EQ(static_cast<size_t>(9), __llvm_libc::strnlen(many, 42));
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}
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TEST(LlvmLibcStrNLenTest, CharactersAfterNullTerminatorShouldNotBeIncluded) {
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const char str[5] = {'a', 'b', 'c', '\0', 'd'};
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ASSERT_EQ(static_cast<size_t>(3), __llvm_libc::strnlen(str, 3));
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// This should only read up to the null terminator.
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ASSERT_EQ(static_cast<size_t>(3), __llvm_libc::strnlen(str, 4));
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ASSERT_EQ(static_cast<size_t>(3), __llvm_libc::strnlen(str, 5));
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}
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