git subrepo clone --branch=20.41.6 git@github.com:ETLCPP/etl.git components/etl
subrepo: subdir: "components/etl" merged: "be5537ec" upstream: origin: "git@github.com:ETLCPP/etl.git" branch: "20.41.6" commit: "be5537ec" git-subrepo: version: "0.4.9" origin: "???" commit: "???"
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components/etl/test/test_alignment.cpp
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components/etl/test/test_alignment.cpp
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/******************************************************************************
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The MIT License(MIT)
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Embedded Template Library.
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https://github.com/ETLCPP/etl
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https://www.etlcpp.com
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Copyright(c) 2014 John Wellbelove
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files(the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions :
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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******************************************************************************/
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#include "unit_test_framework.h"
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#include "etl/alignment.h"
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#include "etl/type_traits.h"
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#include <type_traits>
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#include <utility>
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#include <string>
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#include <ostream>
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#if defined(ETL_COMPILER_MICROSOFT)
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#pragma warning(disable : 4996)
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#endif
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#ifdef ETL_COMPILER_GCC
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#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
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#endif
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void f(int)
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{
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}
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struct A_t
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{
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A_t(uint32_t v_x, uint8_t v_y)
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: x(v_x)
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, y(v_y)
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{
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}
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bool operator==(A_t& other)
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{
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return other.x == x && other.y == y;
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}
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uint32_t x;
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uint8_t y;
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};
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namespace
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{
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SUITE(test_alignment)
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{
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//*************************************************************************
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TEST(test_aligned_storage)
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{
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size_t alignment;
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size_t expected;
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typedef etl::aligned_storage<sizeof(uint16_t), etl::alignment_of<uint32_t>::value>::type storage32_t;
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static storage32_t data32[10];
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alignment = etl::alignment_of<storage32_t>::value;
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expected = std::alignment_of<uint32_t>::value;
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CHECK_EQUAL(expected, alignment);
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for (int i = 0; i < 10; ++i)
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{
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CHECK_EQUAL(0U, size_t(&data32[1]) % expected);
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}
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etl::aligned_storage<100, 8>::type data9;
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f(static_cast<int>(data9));
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}
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//*************************************************************************
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TEST(test_aligned_storage_conversion_operators)
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{
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typedef etl::aligned_storage<sizeof(uint32_t), etl::alignment_of<uint32_t>::value>::type storage32_t;
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static storage32_t data;
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void* pdata = &data.data;
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uint32_t& ref = data;
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const uint32_t& cref = data;
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CHECK(&ref == pdata);
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CHECK(&cref == pdata);
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uint32_t* ptr = data;
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const uint32_t* cptr = data;
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CHECK(ptr == pdata);
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CHECK(cptr == pdata);
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uint32_t& ref2 = data.get_reference<uint32_t>();
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const uint32_t& cref2 = data.get_reference<const uint32_t>();
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CHECK(&ref2 == pdata);
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CHECK(&cref2 == pdata);
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uint32_t* ptr2 = data.get_address<uint32_t>();
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const uint32_t* cptr2 = data.get_address<const uint32_t>();
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CHECK(ptr2 == pdata);
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CHECK(cptr2 == pdata);
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}
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//*************************************************************************
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TEST(test_aligned_storage_as)
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{
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size_t alignment;
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size_t expected;
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typedef etl::aligned_storage_as<sizeof(uint16_t), uint32_t>::type storage32_t;
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static storage32_t data32[10];
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alignment = etl::alignment_of<storage32_t>::value;
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expected = std::alignment_of<uint32_t>::value;
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CHECK_EQUAL(expected, alignment);
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for (int i = 0; i < 10; ++i)
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{
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CHECK_EQUAL(0U, size_t(&data32[1]) % expected);
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}
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etl::aligned_storage<100, 8>::type data9;
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f(static_cast<int>(data9));
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}
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//*************************************************************************
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TEST(test_is_aligned_tests)
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{
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alignas(uint32_t) char buffer[2U * sizeof(uint32_t)];
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char* p = buffer;
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CHECK_TRUE(etl::is_aligned(p, std::alignment_of<uint32_t>()));
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CHECK_TRUE(etl::is_aligned<alignof(uint32_t)>(p));
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CHECK_TRUE(etl::is_aligned<uint32_t>(p));
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++p;
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CHECK_FALSE(etl::is_aligned(p, std::alignment_of<uint32_t>()));
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CHECK_FALSE(etl::is_aligned<alignof(uint32_t)>(p));
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CHECK_FALSE(etl::is_aligned<uint32_t>(p));
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}
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//*************************************************************************
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TEST(test_is_aligned_tests_const)
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{
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alignas(uint32_t) const char buffer[2U * sizeof(uint32_t)] = {0, 1};
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const char* p = buffer;
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CHECK_TRUE(etl::is_aligned(p, std::alignment_of<const uint32_t>()));
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CHECK_TRUE(etl::is_aligned<alignof(const uint32_t)>(p));
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CHECK_TRUE(etl::is_aligned<const uint32_t>(p));
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++p;
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CHECK_FALSE(etl::is_aligned(p, std::alignment_of<const uint32_t>()));
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CHECK_FALSE(etl::is_aligned<alignof(const uint32_t)>(p));
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CHECK_FALSE(etl::is_aligned<const uint32_t>(p));
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}
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//*************************************************************************
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TEST(test_type_with_alignment)
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{
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CHECK_EQUAL(1, alignof(etl::type_with_alignment_t<1>));
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CHECK_EQUAL(2, alignof(etl::type_with_alignment_t<2>));
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CHECK_EQUAL(4, alignof(etl::type_with_alignment_t<4>));
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CHECK_EQUAL(8, alignof(etl::type_with_alignment_t<8>));
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CHECK_EQUAL(16, alignof(etl::type_with_alignment_t<16>));
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CHECK_EQUAL(32, alignof(etl::type_with_alignment_t<32>));
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CHECK_EQUAL(64, alignof(etl::type_with_alignment_t<64>));
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}
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//*************************************************************************
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TEST(test_typed_storage)
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{
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etl::typed_storage<A_t> a;
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CHECK_EQUAL(false, a.has_value());
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auto& b = a.create(123, 4);
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CHECK_EQUAL(true, a.has_value());
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CHECK_EQUAL(a->x, 123);
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CHECK_EQUAL(a->y, 4);
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CHECK_EQUAL(b.x, 123);
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CHECK_EQUAL(b.y, 4);
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CHECK_TRUE(*a == b);
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CHECK_EQUAL(true, a.has_value());
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a.destroy();
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CHECK_EQUAL(false, a.has_value());
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}
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};
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}
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