ulib/3party/sqlpp11/tests/core/serialize/Float.cpp
tqcq 99c258107b
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feat/support_orm (#2)
Co-authored-by: tqcq <99722391+tqcq@users.noreply.github.com>
Reviewed-on: #2
2024-01-06 13:56:45 +00:00

84 lines
3.1 KiB
C++

/*
* Copyright (c) 2023, Roland Bock
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sqlpp11/data_types/floating_point.h>
#include <sqlpp11/detail/float_safe_ostringstream.h>
#include <sqlpp11/value.h>
#include "compare.h"
namespace
{
template <typename T>
void float_safe_ostringstream_serializes_value_as(int line, T value, std::string expected)
{
sqlpp::detail::float_safe_ostringstream os;
os << value;
assert_equal(line, os.str(), expected);
}
template <typename T>
void float_safe_ostringstream_serializes_in_deserializable_format(int line, T value)
{
sqlpp::detail::float_safe_ostringstream os;
os << value;
std::istringstream is{os.str()};
T deserialized;
is >> deserialized;
assert_equal(line, deserialized, value);
}
template <typename T>
std::string string_for_10_0000086()
{
switch (std::numeric_limits<T>::max_digits10)
{
case 9:
return "10.0000086";
case 17:
return "10.000008599999999";
case 21:
return "10.0000086000000000001";
default:
throw std::logic_error("Unknown floating point digit count");
}
}
} // namespace
int Float(int, char*[])
{
float_safe_ostringstream_serializes_value_as(__LINE__, 10.0000086f, string_for_10_0000086<float>());
float_safe_ostringstream_serializes_value_as(__LINE__, 10.0000086, string_for_10_0000086<double>());
float_safe_ostringstream_serializes_value_as(__LINE__, 10.0000086l, string_for_10_0000086<long double>());
float_safe_ostringstream_serializes_in_deserializable_format(__LINE__, 10.0000086f);
float_safe_ostringstream_serializes_in_deserializable_format(__LINE__, 10.0000086);
float_safe_ostringstream_serializes_in_deserializable_format(__LINE__, 10.0000086l);
compare(__LINE__, sqlpp::value(10.0000114), "10.0000114");
return 0;
}