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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/gfx/geometry/point.h"
#include <stddef.h>
#include "testing/gtest/include/gtest/gtest.h"
namespace gfx {
TEST(PointTest, IsOrigin) {
EXPECT_FALSE(Point(1, 0).IsOrigin());
EXPECT_FALSE(Point(0, 1).IsOrigin());
EXPECT_FALSE(Point(1, 2).IsOrigin());
EXPECT_FALSE(Point(-1, 0).IsOrigin());
EXPECT_FALSE(Point(0, -1).IsOrigin());
EXPECT_FALSE(Point(-1, -2).IsOrigin());
EXPECT_TRUE(Point(0, 0).IsOrigin());
}
TEST(PointTest, VectorArithmetic) {
Point a(1, 5);
Vector2d v1(3, -3);
Vector2d v2(-8, 1);
static const struct {
Point expected;
Point actual;
} tests[] = {
{ Point(4, 2), a + v1 },
{ Point(-2, 8), a - v1 },
{ a, a - v1 + v1 },
{ a, a + v1 - v1 },
{ a, a + Vector2d() },
{ Point(12, 1), a + v1 - v2 },
{ Point(-10, 9), a - v1 + v2 }
};
for (auto& test : tests)
EXPECT_EQ(test.expected, test.actual);
}
TEST(PointTest, OffsetFromPoint) {
Point a(1, 5);
Point b(-20, 8);
EXPECT_EQ(Vector2d(-20 - 1, 8 - 5), (b - a));
}
TEST(PointTest, SetToMinMax) {
Point a;
a = Point(3, 5);
EXPECT_EQ(Point(3, 5), a);
a.SetToMax(Point(2, 4));
EXPECT_EQ(Point(3, 5), a);
a.SetToMax(Point(3, 5));
EXPECT_EQ(Point(3, 5), a);
a.SetToMax(Point(4, 2));
EXPECT_EQ(Point(4, 5), a);
a.SetToMax(Point(8, 10));
EXPECT_EQ(Point(8, 10), a);
a.SetToMin(Point(9, 11));
EXPECT_EQ(Point(8, 10), a);
a.SetToMin(Point(8, 10));
EXPECT_EQ(Point(8, 10), a);
a.SetToMin(Point(11, 9));
EXPECT_EQ(Point(8, 9), a);
a.SetToMin(Point(7, 11));
EXPECT_EQ(Point(7, 9), a);
a.SetToMin(Point(3, 5));
EXPECT_EQ(Point(3, 5), a);
}
TEST(PointTest, Offset) {
Point test(3, 4);
test.Offset(5, -8);
EXPECT_EQ(test, Point(8, -4));
}
TEST(PointTest, VectorMath) {
Point test = Point(3, 4);
test += Vector2d(5, -8);
EXPECT_EQ(test, Point(8, -4));
Point test2 = Point(3, 4);
test2 -= Vector2d(5, -8);
EXPECT_EQ(test2, Point(-2, 12));
}
TEST(PointTest, IntegerOverflow) {
int int_max = std::numeric_limits<int>::max();
int int_min = std::numeric_limits<int>::min();
Point max_point(int_max, int_max);
Point min_point(int_min, int_min);
Point test;
test = Point();
test.Offset(int_max, int_max);
EXPECT_EQ(test, max_point);
test = Point();
test.Offset(int_min, int_min);
EXPECT_EQ(test, min_point);
test = Point(10, 20);
test.Offset(int_max, int_max);
EXPECT_EQ(test, max_point);
test = Point(-10, -20);
test.Offset(int_min, int_min);
EXPECT_EQ(test, min_point);
test = Point();
test += Vector2d(int_max, int_max);
EXPECT_EQ(test, max_point);
test = Point();
test += Vector2d(int_min, int_min);
EXPECT_EQ(test, min_point);
test = Point(10, 20);
test += Vector2d(int_max, int_max);
EXPECT_EQ(test, max_point);
test = Point(-10, -20);
test += Vector2d(int_min, int_min);
EXPECT_EQ(test, min_point);
test = Point();
test -= Vector2d(int_max, int_max);
EXPECT_EQ(test, Point(-int_max, -int_max));
test = Point();
test -= Vector2d(int_min, int_min);
EXPECT_EQ(test, max_point);
test = Point(10, 20);
test -= Vector2d(int_min, int_min);
EXPECT_EQ(test, max_point);
test = Point(-10, -20);
test -= Vector2d(int_max, int_max);
EXPECT_EQ(test, min_point);
}
TEST(PointTest, Transpose) {
gfx::Point p(1, -2);
EXPECT_EQ(gfx::Point(-2, 1), TransposePoint(p));
p.Transpose();
EXPECT_EQ(gfx::Point(-2, 1), p);
}
} // namespace gfx
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