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//------------------------------------------------------------------------
//
// Eureka DOOM Editor
//
// Copyright (C) 2022 Ioan Chera
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// 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.
//
//------------------------------------------------------------------------
#include "FixedPoint.h"
#include "gtest/gtest.h"
TEST(FixedPoint, FracUnitConsistency)
{
ASSERT_EQ(kFracUnit, static_cast<int>(kFracUnitD));
}
TEST(FixedPoint, FracUnitIsPowerOf2)
{
ASSERT_GT(kFracUnit, 0);
ASSERT_FALSE(kFracUnit & (kFracUnit - 1));
}
TEST(FixedPoint, FromCoord)
{
auto number = FFixedPoint(123.25);
ASSERT_EQ(static_cast<double>(number), 123.25);
// now try negative
number = FFixedPoint(-67.75);
ASSERT_EQ(static_cast<double>(number), -67.75);
}
TEST(FixedPoint, ToCoordRaw)
{
double number = 123.25;
ASSERT_EQ(FFixedPoint(number).raw(), static_cast<int>(123.25 * kFracUnit));
number = -67.75;
ASSERT_EQ(FFixedPoint(number).raw(), static_cast<int>(-67.75 * kFracUnit));
}
TEST(FixedPoint, IntToCoord)
{
int number = 123;
ASSERT_EQ(FFixedPoint(number).raw(), 123 * kFracUnit);
number = -67;
ASSERT_EQ(FFixedPoint(number).raw(), -67 * kFracUnit);
}
TEST(FixedPoint, CoordToInt)
{
auto number = FFixedPoint(123);
ASSERT_EQ(static_cast<int>(number), 123);
// now try negative
number = FFixedPoint(-67);
ASSERT_EQ(static_cast<int>(number), -67);
}
TEST(FixedPoint, ZeroInit)
{
FFixedPoint point = {};
ASSERT_EQ(point.raw(), 0);
ASSERT_EQ(FFixedPoint{}.raw(), 0);
}
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