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237 lines
6.8 KiB
237 lines
6.8 KiB
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include <stddef.h>
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#include "base/macros.h"
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#include "testing/gtest/include/gtest/gtest.h"
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#include "ui/gfx/geometry/point.h"
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#include "ui/gfx/geometry/point_conversions.h"
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#include "ui/gfx/geometry/point_f.h"
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namespace gfx {
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TEST(PointTest, ToPointF) {
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// Check that explicit conversion from integer to float compiles.
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Point a(10, 20);
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PointF b = PointF(a);
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EXPECT_EQ(static_cast<float>(a.x()), b.x());
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EXPECT_EQ(static_cast<float>(a.y()), b.y());
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}
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TEST(PointTest, IsOrigin) {
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EXPECT_FALSE(Point(1, 0).IsOrigin());
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EXPECT_FALSE(Point(0, 1).IsOrigin());
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EXPECT_FALSE(Point(1, 2).IsOrigin());
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EXPECT_FALSE(Point(-1, 0).IsOrigin());
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EXPECT_FALSE(Point(0, -1).IsOrigin());
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EXPECT_FALSE(Point(-1, -2).IsOrigin());
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EXPECT_TRUE(Point(0, 0).IsOrigin());
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EXPECT_FALSE(PointF(0.1f, 0).IsOrigin());
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EXPECT_FALSE(PointF(0, 0.1f).IsOrigin());
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EXPECT_FALSE(PointF(0.1f, 2).IsOrigin());
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EXPECT_FALSE(PointF(-0.1f, 0).IsOrigin());
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EXPECT_FALSE(PointF(0, -0.1f).IsOrigin());
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EXPECT_FALSE(PointF(-0.1f, -2).IsOrigin());
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EXPECT_TRUE(PointF(0, 0).IsOrigin());
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}
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TEST(PointTest, VectorArithmetic) {
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Point a(1, 5);
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Vector2d v1(3, -3);
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Vector2d v2(-8, 1);
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static const struct {
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Point expected;
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Point actual;
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} tests[] = {
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{ Point(4, 2), a + v1 },
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{ Point(-2, 8), a - v1 },
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{ a, a - v1 + v1 },
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{ a, a + v1 - v1 },
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{ a, a + Vector2d() },
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{ Point(12, 1), a + v1 - v2 },
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{ Point(-10, 9), a - v1 + v2 }
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};
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for (size_t i = 0; i < arraysize(tests); ++i)
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EXPECT_EQ(tests[i].expected.ToString(), tests[i].actual.ToString());
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}
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TEST(PointTest, OffsetFromPoint) {
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Point a(1, 5);
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Point b(-20, 8);
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EXPECT_EQ(Vector2d(-20 - 1, 8 - 5).ToString(), (b - a).ToString());
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}
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TEST(PointTest, ToRoundedPoint) {
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EXPECT_EQ(Point(0, 0), ToRoundedPoint(PointF(0, 0)));
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EXPECT_EQ(Point(0, 0), ToRoundedPoint(PointF(0.0001f, 0.0001f)));
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EXPECT_EQ(Point(0, 0), ToRoundedPoint(PointF(0.4999f, 0.4999f)));
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EXPECT_EQ(Point(1, 1), ToRoundedPoint(PointF(0.5f, 0.5f)));
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EXPECT_EQ(Point(1, 1), ToRoundedPoint(PointF(0.9999f, 0.9999f)));
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EXPECT_EQ(Point(10, 10), ToRoundedPoint(PointF(10, 10)));
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EXPECT_EQ(Point(10, 10), ToRoundedPoint(PointF(10.0001f, 10.0001f)));
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EXPECT_EQ(Point(10, 10), ToRoundedPoint(PointF(10.4999f, 10.4999f)));
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EXPECT_EQ(Point(11, 11), ToRoundedPoint(PointF(10.5f, 10.5f)));
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EXPECT_EQ(Point(11, 11), ToRoundedPoint(PointF(10.9999f, 10.9999f)));
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EXPECT_EQ(Point(-10, -10), ToRoundedPoint(PointF(-10, -10)));
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EXPECT_EQ(Point(-10, -10), ToRoundedPoint(PointF(-10.0001f, -10.0001f)));
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EXPECT_EQ(Point(-10, -10), ToRoundedPoint(PointF(-10.4999f, -10.4999f)));
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EXPECT_EQ(Point(-11, -11), ToRoundedPoint(PointF(-10.5f, -10.5f)));
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EXPECT_EQ(Point(-11, -11), ToRoundedPoint(PointF(-10.9999f, -10.9999f)));
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}
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TEST(PointTest, Scale) {
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EXPECT_EQ(PointF().ToString(), ScalePoint(PointF(), 2).ToString());
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EXPECT_EQ(PointF().ToString(), ScalePoint(PointF(), 2, 2).ToString());
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EXPECT_EQ(PointF(2, -2).ToString(), ScalePoint(PointF(1, -1), 2).ToString());
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EXPECT_EQ(PointF(2, -2).ToString(),
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ScalePoint(PointF(1, -1), 2, 2).ToString());
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PointF zero;
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PointF one(1, -1);
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zero.Scale(2);
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zero.Scale(3, 1.5);
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one.Scale(2);
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one.Scale(3, 1.5);
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EXPECT_EQ(PointF().ToString(), zero.ToString());
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EXPECT_EQ(PointF(6, -3).ToString(), one.ToString());
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}
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TEST(PointTest, ClampPoint) {
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Point a;
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a = Point(3, 5);
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EXPECT_EQ(Point(3, 5).ToString(), a.ToString());
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a.SetToMax(Point(2, 4));
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EXPECT_EQ(Point(3, 5).ToString(), a.ToString());
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a.SetToMax(Point(3, 5));
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EXPECT_EQ(Point(3, 5).ToString(), a.ToString());
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a.SetToMax(Point(4, 2));
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EXPECT_EQ(Point(4, 5).ToString(), a.ToString());
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a.SetToMax(Point(8, 10));
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EXPECT_EQ(Point(8, 10).ToString(), a.ToString());
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a.SetToMin(Point(9, 11));
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EXPECT_EQ(Point(8, 10).ToString(), a.ToString());
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a.SetToMin(Point(8, 10));
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EXPECT_EQ(Point(8, 10).ToString(), a.ToString());
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a.SetToMin(Point(11, 9));
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EXPECT_EQ(Point(8, 9).ToString(), a.ToString());
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a.SetToMin(Point(7, 11));
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EXPECT_EQ(Point(7, 9).ToString(), a.ToString());
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a.SetToMin(Point(3, 5));
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EXPECT_EQ(Point(3, 5).ToString(), a.ToString());
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}
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TEST(PointTest, ClampPointF) {
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PointF a;
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a = PointF(3.5f, 5.5f);
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EXPECT_EQ(PointF(3.5f, 5.5f).ToString(), a.ToString());
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a.SetToMax(PointF(2.5f, 4.5f));
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EXPECT_EQ(PointF(3.5f, 5.5f).ToString(), a.ToString());
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a.SetToMax(PointF(3.5f, 5.5f));
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EXPECT_EQ(PointF(3.5f, 5.5f).ToString(), a.ToString());
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a.SetToMax(PointF(4.5f, 2.5f));
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EXPECT_EQ(PointF(4.5f, 5.5f).ToString(), a.ToString());
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a.SetToMax(PointF(8.5f, 10.5f));
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EXPECT_EQ(PointF(8.5f, 10.5f).ToString(), a.ToString());
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a.SetToMin(PointF(9.5f, 11.5f));
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EXPECT_EQ(PointF(8.5f, 10.5f).ToString(), a.ToString());
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a.SetToMin(PointF(8.5f, 10.5f));
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EXPECT_EQ(PointF(8.5f, 10.5f).ToString(), a.ToString());
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a.SetToMin(PointF(11.5f, 9.5f));
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EXPECT_EQ(PointF(8.5f, 9.5f).ToString(), a.ToString());
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a.SetToMin(PointF(7.5f, 11.5f));
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EXPECT_EQ(PointF(7.5f, 9.5f).ToString(), a.ToString());
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a.SetToMin(PointF(3.5f, 5.5f));
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EXPECT_EQ(PointF(3.5f, 5.5f).ToString(), a.ToString());
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}
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TEST(PointTest, Offset) {
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Point test(3, 4);
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test.Offset(5, -8);
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EXPECT_EQ(test, Point(8, -4));
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}
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TEST(PointTest, VectorMath) {
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Point test = Point(3, 4);
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test += Vector2d(5, -8);
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EXPECT_EQ(test, Point(8, -4));
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Point test2 = Point(3, 4);
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test2 -= Vector2d(5, -8);
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EXPECT_EQ(test2, Point(-2, 12));
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}
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TEST(PointTest, IntegerOverflow) {
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int int_max = std::numeric_limits<int>::max();
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int int_min = std::numeric_limits<int>::min();
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Point max_point(int_max, int_max);
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Point min_point(int_min, int_min);
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Point test;
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test = Point();
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test.Offset(int_max, int_max);
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EXPECT_EQ(test, max_point);
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test = Point();
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test.Offset(int_min, int_min);
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EXPECT_EQ(test, min_point);
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test = Point(10, 20);
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test.Offset(int_max, int_max);
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EXPECT_EQ(test, max_point);
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test = Point(-10, -20);
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test.Offset(int_min, int_min);
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EXPECT_EQ(test, min_point);
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test = Point();
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test += Vector2d(int_max, int_max);
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EXPECT_EQ(test, max_point);
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test = Point();
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test += Vector2d(int_min, int_min);
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EXPECT_EQ(test, min_point);
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test = Point(10, 20);
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test += Vector2d(int_max, int_max);
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EXPECT_EQ(test, max_point);
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test = Point(-10, -20);
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test += Vector2d(int_min, int_min);
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EXPECT_EQ(test, min_point);
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test = Point();
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test -= Vector2d(int_max, int_max);
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EXPECT_EQ(test, Point(-int_max, -int_max));
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test = Point();
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test -= Vector2d(int_min, int_min);
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EXPECT_EQ(test, max_point);
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test = Point(10, 20);
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test -= Vector2d(int_min, int_min);
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EXPECT_EQ(test, max_point);
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test = Point(-10, -20);
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test -= Vector2d(int_max, int_max);
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EXPECT_EQ(test, min_point);
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}
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} // namespace gfx
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