// The MIT License (MIT)
//
// Copyright (c) 2018 Mateusz Pusz
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// 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 <mp-units/bits/ratio.h>

namespace {

using namespace mp_units::detail;

static_assert(ratio(2, 4) == ratio(1, 2));

static_assert(ratio(1) * ratio(3, 8) == ratio(3, 8));
static_assert(ratio(3, 8) * ratio(1) == ratio(3, 8));
static_assert(ratio(4) * ratio(1, 8) == ratio(1, 2));
static_assert(ratio(4) * ratio(1, 2) == ratio(2));
static_assert(ratio(1, 8) * ratio(2) == ratio(1, 4));
static_assert(ratio(1, 2) * ratio(8) == ratio(4));

// ratio negation
static_assert(-ratio(3, 8) == ratio(-3, 8));

// ratio addition
static_assert(ratio(1, 2) + ratio(1, 3) == ratio(5, 6));

static_assert(ratio(4) / ratio(2) == ratio(2));
static_assert(ratio(2) / ratio(8) == ratio(1, 4));
static_assert(ratio(1, 8) / ratio(2) == ratio(1, 16));
static_assert(ratio(6) / ratio(3) == ratio(2));

// common_ratio
static_assert(common_ratio(ratio(1), ratio(1000)) == ratio(1));
static_assert(common_ratio(ratio(1000), ratio(1)) == ratio(1));
static_assert(common_ratio(ratio(1), ratio(1, 1000)) == ratio(1, 1000));
static_assert(common_ratio(ratio(1, 1000), ratio(1)) == ratio(1, 1000));
static_assert(common_ratio(ratio(100, 1), ratio(10, 1)) == ratio(10, 1));
static_assert(common_ratio(ratio(100, 1), ratio(1, 10)) == ratio(1, 10));
static_assert(common_ratio(ratio(2), ratio(4)) == ratio(2));

// comparison
static_assert((ratio(3, 4) <=> ratio(6, 8)) == (0 <=> 0));
static_assert((ratio(3, 4) <=> ratio(-3, 4)) == (0 <=> -1));
static_assert((ratio(-3, 4) <=> ratio(3, -4)) == (0 <=> 0));

}  // namespace