1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
// 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
|
