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[Base] Tests for `copy_and_swap_16_in_32_aligned`

This commit is contained in:
Joel Linn 2022-01-22 14:06:18 +01:00 committed by Triang3l
parent 4a288dc6bd
commit 0316d1a054
1 changed files with 47 additions and 4 deletions
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51
src/xenia/base/testing/memory_test.cc
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@ -454,13 +454,56 @@ TEST_CASE("copy_and_swap_64_unaligned", "[copy_and_swap]") {
}
TEST_CASE("copy_and_swap_16_in_32_aligned", "[copy_and_swap]") {
// TODO(bwrsandman): test once properly understood.
REQUIRE(true == true);
constexpr size_t count = 17;
std::array<uint8_t, count * 4> src{};
std::array<uint8_t, count * 4> dst{};
// Check alignment (if this fails, adjust allocation)
REQUIRE((reinterpret_cast<uintptr_t>(src.data()) & 0xF) == 0);
REQUIRE((reinterpret_cast<uintptr_t>(dst.data()) & 0xF) == 0);
for (size_t i = 0; i < src.size(); ++i) {
src[i] = static_cast<uint8_t>(i) + 1; // no zero in array
}
copy_and_swap_16_in_32_aligned(dst.data(), src.data(), count);
for (size_t i = 0; i < src.size(); i += 4) {
// Check src is untouched
REQUIRE(static_cast<size_t>(src[i + 0]) == i + 1);
REQUIRE(static_cast<size_t>(src[i + 1]) == i + 2);
REQUIRE(static_cast<size_t>(src[i + 2]) == i + 3);
REQUIRE(static_cast<size_t>(src[i + 3]) == i + 4);
// Check swapped bytes
REQUIRE(static_cast<size_t>(dst[i + 0]) == static_cast<size_t>(src[i + 2]));
REQUIRE(static_cast<size_t>(dst[i + 1]) == static_cast<size_t>(src[i + 3]));
REQUIRE(static_cast<size_t>(dst[i + 2]) == static_cast<size_t>(src[i + 0]));
REQUIRE(static_cast<size_t>(dst[i + 3]) == static_cast<size_t>(src[i + 1]));
}
}
TEST_CASE("copy_and_swap_16_in_32_unaligned", "[copy_and_swap]") {
// TODO(bwrsandman): test once properly understood.
REQUIRE(true == true);
constexpr size_t count = 17;
std::array<uint8_t, count * 4> src{};
std::array<uint8_t, count * 4> dst{};
for (size_t i = 0; i < src.size(); ++i) {
src[i] = static_cast<uint8_t>(i) + 1; // no zero in array
}
copy_and_swap_16_in_32_unaligned(dst.data(), src.data(), count);
for (size_t i = 0; i < src.size(); i += 4) {
// Check src is untouched
REQUIRE(static_cast<size_t>(src[i + 0]) == i + 1);
REQUIRE(static_cast<size_t>(src[i + 1]) == i + 2);
REQUIRE(static_cast<size_t>(src[i + 2]) == i + 3);
REQUIRE(static_cast<size_t>(src[i + 3]) == i + 4);
// Check swapped bytes
REQUIRE(static_cast<size_t>(dst[i + 0]) == static_cast<size_t>(src[i + 2]));
REQUIRE(static_cast<size_t>(dst[i + 1]) == static_cast<size_t>(src[i + 3]));
REQUIRE(static_cast<size_t>(dst[i + 2]) == static_cast<size_t>(src[i + 0]));
REQUIRE(static_cast<size_t>(dst[i + 3]) == static_cast<size_t>(src[i + 1]));
}
}
TEST_CASE("create_and_close_file_mapping", "Virtual Memory Mapping") {