96 lines
3.0 KiB
C++
96 lines
3.0 KiB
C++
// Copyright 2020 The Pigweed Authors
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
|
|
// use this file except in compliance with the License. You may obtain a copy of
|
|
// the License at
|
|
//
|
|
// https://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
// License for the specific language governing permissions and limitations under
|
|
// the License.
|
|
|
|
#include <array>
|
|
|
|
#include "gtest/gtest.h"
|
|
#include "pw_polyfill/language_feature_macros.h"
|
|
#include "pw_polyfill/standard.h"
|
|
#include "pw_polyfill/standard_library/cstddef.h"
|
|
#include "pw_polyfill/standard_library/iterator.h"
|
|
|
|
namespace pw {
|
|
namespace polyfill {
|
|
namespace {
|
|
|
|
PW_INLINE_VARIABLE constexpr int foo = 42;
|
|
|
|
static_assert(foo == 42, "Error!");
|
|
|
|
static_assert(PW_CXX_STANDARD_IS_SUPPORTED(98), "C++98 must be supported");
|
|
static_assert(PW_CXX_STANDARD_IS_SUPPORTED(11), "C++11 must be supported");
|
|
static_assert(PW_CXX_STANDARD_IS_SUPPORTED(14), "C++14 must be supported");
|
|
|
|
#if __cplusplus >= 201703L
|
|
static_assert(PW_CXX_STANDARD_IS_SUPPORTED(17), "C++17 must be not supported");
|
|
#else
|
|
static_assert(!PW_CXX_STANDARD_IS_SUPPORTED(17), "C++17 must be supported");
|
|
#endif // __cplusplus >= 201703L
|
|
|
|
#if __cplusplus >= 202002L
|
|
static_assert(PW_CXX_STANDARD_IS_SUPPORTED(20), "C++20 must be supported");
|
|
#else
|
|
static_assert(!PW_CXX_STANDARD_IS_SUPPORTED(20), "C++20 must not be supported");
|
|
#endif // __cplusplus >= 202002L
|
|
|
|
TEST(Cstddef, Byte_Operators) {
|
|
std::byte value = std::byte(0);
|
|
EXPECT_EQ((value | std::byte(0x12)), std::byte(0x12));
|
|
EXPECT_EQ((value & std::byte(0x12)), std::byte(0));
|
|
EXPECT_EQ((value ^ std::byte(0x12)), std::byte(0x12));
|
|
EXPECT_EQ(~std::byte(0), std::byte(-1));
|
|
EXPECT_EQ((std::byte(1) << 3), std::byte(0x8));
|
|
EXPECT_EQ((std::byte(0x8) >> 3), std::byte(1));
|
|
}
|
|
|
|
TEST(Cstddef, Byte_AssignmentOperators) {
|
|
std::byte value = std::byte(0);
|
|
EXPECT_EQ((value |= std::byte(0x12)), std::byte(0x12));
|
|
EXPECT_EQ((value &= std::byte(0x0F)), std::byte(0x02));
|
|
EXPECT_EQ((value ^= std::byte(0xFF)), std::byte(0xFD));
|
|
EXPECT_EQ((value <<= 4), std::byte(0xD0));
|
|
EXPECT_EQ((value >>= 5), std::byte(0x6));
|
|
}
|
|
|
|
// Check that consteval is at least equivalent to constexpr.
|
|
PW_CONSTEVAL int ConstevalFunction() { return 123; }
|
|
static_assert(ConstevalFunction() == 123,
|
|
"Function should work in static_assert");
|
|
|
|
int c_array[5423] = {};
|
|
std::array<int, 32> array;
|
|
|
|
TEST(Iterator, Size) {
|
|
EXPECT_EQ(std::size(c_array), sizeof(c_array) / sizeof(*c_array));
|
|
EXPECT_EQ(std::size(array), array.size());
|
|
}
|
|
|
|
TEST(Iterator, Data) {
|
|
EXPECT_EQ(std::data(c_array), c_array);
|
|
EXPECT_EQ(std::data(array), array.data());
|
|
}
|
|
|
|
PW_CONSTINIT bool mutable_value = true;
|
|
|
|
TEST(Constinit, ValueIsMutable) {
|
|
ASSERT_TRUE(mutable_value);
|
|
mutable_value = false;
|
|
ASSERT_FALSE(mutable_value);
|
|
mutable_value = true;
|
|
}
|
|
|
|
} // namespace
|
|
} // namespace polyfill
|
|
} // namespace pw
|