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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/gfx/point_base.h"
#include "base/basictypes.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/gfx/point.h"
#include "ui/gfx/point_conversions.h"
#include "ui/gfx/point_f.h"
namespace gfx {
namespace {
int TestPointF(const PointF& p) {
return p.x();
}
} // namespace
TEST(PointTest, ToPointF) {
// Check that implicit conversion from integer to float compiles.
Point a(10, 20);
float x = TestPointF(a);
EXPECT_EQ(x, a.x());
PointF b(10, 20);
EXPECT_EQ(a, b);
EXPECT_EQ(b, a);
}
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());
EXPECT_FALSE(PointF(0.1f, 0).IsOrigin());
EXPECT_FALSE(PointF(0, 0.1f).IsOrigin());
EXPECT_FALSE(PointF(0.1f, 2).IsOrigin());
EXPECT_FALSE(PointF(-0.1f, 0).IsOrigin());
EXPECT_FALSE(PointF(0, -0.1f).IsOrigin());
EXPECT_FALSE(PointF(-0.1f, -2).IsOrigin());
EXPECT_TRUE(PointF(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 (size_t i = 0; i < ARRAYSIZE_UNSAFE(tests); ++i)
EXPECT_EQ(tests[i].expected.ToString(), tests[i].actual.ToString());
}
TEST(PointTest, OffsetFromPoint) {
Point a(1, 5);
Point b(-20, 8);
EXPECT_EQ(Vector2d(-20 - 1, 8 - 5).ToString(), b.OffsetFrom(a).ToString());
EXPECT_EQ(Vector2d(-20 - 1, 8 - 5).ToString(), (b - a).ToString());
}
TEST(PointTest, ToRoundedPoint) {
EXPECT_EQ(Point(0, 0), ToRoundedPoint(PointF(0, 0)));
EXPECT_EQ(Point(0, 0), ToRoundedPoint(PointF(0.0001f, 0.0001f)));
EXPECT_EQ(Point(0, 0), ToRoundedPoint(PointF(0.4999f, 0.4999f)));
EXPECT_EQ(Point(1, 1), ToRoundedPoint(PointF(0.5f, 0.5f)));
EXPECT_EQ(Point(1, 1), ToRoundedPoint(PointF(0.9999f, 0.9999f)));
EXPECT_EQ(Point(10, 10), ToRoundedPoint(PointF(10, 10)));
EXPECT_EQ(Point(10, 10), ToRoundedPoint(PointF(10.0001f, 10.0001f)));
EXPECT_EQ(Point(10, 10), ToRoundedPoint(PointF(10.4999f, 10.4999f)));
EXPECT_EQ(Point(11, 11), ToRoundedPoint(PointF(10.5f, 10.5f)));
EXPECT_EQ(Point(11, 11), ToRoundedPoint(PointF(10.9999f, 10.9999f)));
EXPECT_EQ(Point(-10, -10), ToRoundedPoint(PointF(-10, -10)));
EXPECT_EQ(Point(-10, -10), ToRoundedPoint(PointF(-10.0001f, -10.0001f)));
EXPECT_EQ(Point(-10, -10), ToRoundedPoint(PointF(-10.4999f, -10.4999f)));
EXPECT_EQ(Point(-11, -11), ToRoundedPoint(PointF(-10.5f, -10.5f)));
EXPECT_EQ(Point(-11, -11), ToRoundedPoint(PointF(-10.9999f, -10.9999f)));
}
TEST(PointTest, Scale) {
EXPECT_EQ(PointF().ToString(), ScalePoint(Point(), 2).ToString());
EXPECT_EQ(PointF().ToString(), ScalePoint(Point(), 2, 2).ToString());
EXPECT_EQ(PointF(2, -2).ToString(),
ScalePoint(Point(1, -1), 2).ToString());
EXPECT_EQ(PointF(2, -2).ToString(),
ScalePoint(Point(1, -1), 2, 2).ToString());
PointF zero;
PointF one(1, -1);
zero.Scale(2);
zero.Scale(3, 1.5);
one.Scale(2);
one.Scale(3, 1.5);
EXPECT_EQ(PointF().ToString(), zero.ToString());
EXPECT_EQ(PointF(6, -3).ToString(), one.ToString());
}
} // namespace gfx
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