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01aa9e23fe
Created a new metafunction, FloatType, which will prevent truncation of the decimal portion of the Length method result. Added GTest unit tests, and converted old unit tests in gfx/2d/unittest/TestPoint.cpp to gtests. Differential Revision: https://phabricator.services.mozilla.com/D208306
99 lines
2.6 KiB
C++
99 lines
2.6 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "gtest/gtest.h"
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#include <cmath>
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#include "BasePoint.h"
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#include "Units.h"
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#include "Point.h"
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using mozilla::CSSCoord;
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using mozilla::CSSIntCoord;
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using mozilla::CSSIntPoint;
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using mozilla::CSSPixel;
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using mozilla::gfx::CoordTyped;
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using mozilla::gfx::FloatType_t;
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using mozilla::gfx::IntCoordTyped;
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using mozilla::gfx::IntPointTyped;
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using mozilla::gfx::PointTyped;
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using mozilla::gfx::UnknownUnits;
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TEST(Gfx, TestCSSIntPointLength)
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{
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CSSIntPoint testPnt(1, 1);
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float res = testPnt.Length();
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float epsilon = 0.001f;
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constexpr float sqrtOfTwo = 1.414;
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float diff = std::abs(res - sqrtOfTwo);
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EXPECT_LT(diff, epsilon);
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}
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TEST(Gfx, TestPointAddition)
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{
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PointTyped<CSSPixel> a, b;
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a.x = 2;
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a.y = 2;
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b.x = 5;
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b.y = -5;
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a += b;
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EXPECT_EQ(a.x, 7.f);
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EXPECT_EQ(a.y, -3.f);
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}
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TEST(Gfx, TestPointSubtraction)
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{
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PointTyped<CSSPixel> a, b;
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a.x = 2;
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a.y = 2;
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b.x = 5;
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b.y = -5;
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a -= b;
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EXPECT_EQ(a.x, -3.f);
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EXPECT_EQ(a.y, 7.f);
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}
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TEST(Gfx, TestPointRoundToMultiple)
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{
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const int32_t roundTo = 2;
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IntPointTyped<CSSPixel> p(478, -394);
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EXPECT_EQ(p.RoundedToMultiple(roundTo), p);
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IntPointTyped<CSSPixel> p2(478, 393);
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EXPECT_NE(p2.RoundedToMultiple(roundTo), p2);
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}
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TEST(Gfx, TestFloatTypeMeta)
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{
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// TODO: Should int64_t's FloatType be double instead?
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static_assert(std::is_same_v<FloatType_t<int64_t>, float>,
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"The FloatType of an integer type should be float");
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static_assert(std::is_same_v<FloatType_t<int32_t>, float>,
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"The FloatType of an integer type should be float");
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static_assert(
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std::is_same_v<FloatType_t<float>, float>,
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"The FloatType of a floating-point type should be the given type");
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static_assert(
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std::is_same_v<FloatType_t<double>, double>,
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"The FloatType of a floating-point type should be the given type");
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static_assert(
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std::is_same_v<FloatType_t<IntCoordTyped<UnknownUnits, int32_t>>,
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CoordTyped<UnknownUnits, float>>,
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"The FloatType of an IntCoordTyped<Units, Rep> should be "
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"CoordTyped<Units, float>");
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static_assert(
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std::is_same_v<FloatType_t<CoordTyped<UnknownUnits, long double>>,
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CoordTyped<UnknownUnits, long double>>,
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"The FloatType of a CoordTyped<Units, Rep> should be "
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"CoordTyped<Units, Rep>");
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}
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