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/*
* Copyright © Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 or 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "mir/geometry/size.h"
#include <gmock/gmock.h>
#include <gtest/gtest.h>
namespace geom = mir::geometry;
TEST(geometry, size)
{
using namespace geom;
Size const size2x4{2, 4};
EXPECT_EQ(Width(2), size2x4.width);
EXPECT_EQ(Height(4), size2x4.height);
Size const copy = size2x4;
EXPECT_EQ(Width(2), copy.width);
EXPECT_EQ(Height(4), copy.height);
EXPECT_EQ(size2x4, copy);
Size const defaultValue;
EXPECT_EQ(Width(0), defaultValue.width);
EXPECT_EQ(Height(0), defaultValue.height);
EXPECT_NE(size2x4, defaultValue);
}
TEST(geometry, size_can_be_converted_from_int_to_float)
{
using namespace geom;
Size const i{1, 3};
SizeF const f{i};
EXPECT_EQ(WidthF(1.0), f.width);
EXPECT_EQ(HeightF(3.0), f.height);
}
TEST(geometry, size_can_be_converted_from_float_to_int)
{
using namespace geom;
SizeF const f{1.2, 3.0};
Size const i{f};
EXPECT_EQ(Width(1), i.width);
EXPECT_EQ(Height(3), i.height);
}
// Test that non-lossy implicit conversions exist
static_assert(std::convertible_to<geom::Size, geom::SizeD>, "Implicit conversion int->double preserves precision");
static_assert(std::convertible_to<geom::SizeF, geom::SizeD>, "Implicit conversion float->double preserves precision");
// Test that lossy implicit conversions fail
static_assert(!std::convertible_to<geom::Size, geom::SizeF>, "Conversion float->int is lossy");
static_assert(!std::convertible_to<geom::SizeD, geom::SizeF>, "Conversion double->float is lossy");
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