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///////////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2015 Microsoft Corporation. All rights reserved.
//
// This code is licensed under the MIT License (MIT).
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
///////////////////////////////////////////////////////////////////////////////
#include <gtest/gtest.h>
#include <gsl/byte> // for to_byte, to_integer, byte, operator&, ope...
using namespace std;
using namespace gsl;
namespace
{
int modify_both(gsl::byte& b, int& i)
{
i = 10;
b = to_byte<5>();
return i;
}
TEST(byte_tests, construction)
{
{
const byte b = static_cast<byte>(4);
EXPECT_TRUE(static_cast<unsigned char>(b) == 4);
}
// clang-format off
GSL_SUPPRESS(es.49)
// clang-format on
{
const byte b = byte(12);
EXPECT_TRUE(static_cast<unsigned char>(b) == 12);
}
{
const byte b = to_byte<12>();
EXPECT_TRUE(static_cast<unsigned char>(b) == 12);
}
{
const unsigned char uc = 12;
const byte b = to_byte(uc);
EXPECT_TRUE(static_cast<unsigned char>(b) == 12);
}
#if defined(__cplusplus) && (__cplusplus >= 201703L)
{
const byte b{14};
EXPECT_TRUE(static_cast<unsigned char>(b) == 14);
}
#endif
}
TEST(byte_tests, bitwise_operations)
{
const byte b = to_byte<0xFF>();
byte a = to_byte<0x00>();
EXPECT_TRUE((b | a) == to_byte<0xFF>());
EXPECT_TRUE(a == to_byte<0x00>());
a |= b;
EXPECT_TRUE(a == to_byte<0xFF>());
a = to_byte<0x01>();
EXPECT_TRUE((b & a) == to_byte<0x01>());
a &= b;
EXPECT_TRUE(a == to_byte<0x01>());
EXPECT_TRUE((b ^ a) == to_byte<0xFE>());
EXPECT_TRUE(a == to_byte<0x01>());
a ^= b;
EXPECT_TRUE(a == to_byte<0xFE>());
a = to_byte<0x01>();
EXPECT_TRUE(~a == to_byte<0xFE>());
a = to_byte<0xFF>();
EXPECT_TRUE((a << 4) == to_byte<0xF0>());
EXPECT_TRUE((a >> 4) == to_byte<0x0F>());
a <<= 4;
EXPECT_TRUE(a == to_byte<0xF0>());
a >>= 4;
EXPECT_TRUE(a == to_byte<0x0F>());
}
TEST(byte_tests, to_integer)
{
const byte b = to_byte<0x12>();
EXPECT_TRUE(0x12 == gsl::to_integer<char>(b));
EXPECT_TRUE(0x12 == gsl::to_integer<short>(b));
EXPECT_TRUE(0x12 == gsl::to_integer<long>(b));
EXPECT_TRUE(0x12 == gsl::to_integer<long long>(b));
EXPECT_TRUE(0x12 == gsl::to_integer<unsigned char>(b));
EXPECT_TRUE(0x12 == gsl::to_integer<unsigned short>(b));
EXPECT_TRUE(0x12 == gsl::to_integer<unsigned long>(b));
EXPECT_TRUE(0x12 == gsl::to_integer<unsigned long long>(b));
// EXPECT_TRUE(0x12 == gsl::to_integer<float>(b)); // expect compile-time error
// EXPECT_TRUE(0x12 == gsl::to_integer<double>(b)); // expect compile-time error
}
TEST(byte_tests, aliasing)
{
int i{0};
const int res = modify_both(reinterpret_cast<byte&>(i), i);
EXPECT_TRUE(res == i);
}
} // namespace
#ifdef CONFIRM_COMPILATION_ERRORS
copy(src_span_static, dst_span_static);
#endif
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