| 1 | //===-- Unittests for mempcpy ---------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | #include "hdr/signal_macros.h" |
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| 9 | #include "src/string/mempcpy.h" |
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| 10 | #include "test/UnitTest/Test.h" |
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| 11 | |
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| 12 | // Since this function just calls out to memcpy, and memcpy has its own unit |
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| 13 | // tests, it is assumed that memcpy works. These tests are just for the specific |
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| 14 | // mempcpy behavior (returning the end of what was copied). |
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| 15 | TEST(LlvmLibcMempcpyTest, Simple) { |
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| 16 | const char *src = "12345" ; |
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| 17 | char dest[10] = {}; |
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| 18 | void *result = LIBC_NAMESPACE::mempcpy(dest, src, 6); |
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| 19 | ASSERT_EQ(static_cast<char *>(result), dest + 6); |
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| 20 | ASSERT_STREQ(src, dest); |
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| 21 | } |
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| 22 | |
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| 23 | TEST(LlvmLibcMempcpyTest, ZeroCount) { |
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| 24 | const char *src = "12345" ; |
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| 25 | char dest[10]; |
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| 26 | void *result = LIBC_NAMESPACE::mempcpy(dest, src, 0); |
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| 27 | ASSERT_EQ(static_cast<char *>(result), dest + 0); |
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| 28 | } |
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| 29 | |
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| 30 | #if defined(LIBC_ADD_NULL_CHECKS) && !defined(LIBC_HAS_SANITIZER) |
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| 31 | |
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| 32 | TEST(LlvmLibcMempcpyTest, CrashOnNullPtr) { |
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| 33 | ASSERT_DEATH([]() { LIBC_NAMESPACE::mempcpy(nullptr, nullptr, 1); }, |
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| 34 | WITH_SIGNAL(-1)); |
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| 35 | } |
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| 36 | |
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| 37 | #endif // defined(LIBC_ADD_NULL_CHECKS) && !defined(LIBC_HAS_SANITIZER) |
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| 38 | |
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