1 files changed, 236 insertions, 0 deletions
diff --git a/ui/gfx/geometry/point_unittest.cc b/ui/gfx/geometry/point_unittest.cc
new file mode 100644
index 0000000000..b453dd7684
--- /dev/null
+++ b/ui/gfx/geometry/point_unittest.cc
@@ -0,0 +1,236 @@
+// 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 <stddef.h>
+
+#include "base/macros.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/gfx/geometry/point.h"
+#include "ui/gfx/geometry/point_conversions.h"
+#include "ui/gfx/geometry/point_f.h"
+
+namespace gfx {
+
+TEST(PointTest, ToPointF) {
+  // Check that explicit conversion from integer to float compiles.
+  Point a(10, 20);
+  PointF b = PointF(a);
+
+  EXPECT_EQ(static_cast<float>(a.x()), b.x());
+  EXPECT_EQ(static_cast<float>(a.y()), b.y());
+}
+
+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(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 - 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(PointF(), 2).ToString());
+  EXPECT_EQ(PointF().ToString(), ScalePoint(PointF(), 2, 2).ToString());
+
+  EXPECT_EQ(PointF(2, -2).ToString(), ScalePoint(PointF(1, -1), 2).ToString());
+  EXPECT_EQ(PointF(2, -2).ToString(),
+            ScalePoint(PointF(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());
+}
+
+TEST(PointTest, ClampPoint) {
+  Point a;
+
+  a = Point(3, 5);
+  EXPECT_EQ(Point(3, 5).ToString(), a.ToString());
+  a.SetToMax(Point(2, 4));
+  EXPECT_EQ(Point(3, 5).ToString(), a.ToString());
+  a.SetToMax(Point(3, 5));
+  EXPECT_EQ(Point(3, 5).ToString(), a.ToString());
+  a.SetToMax(Point(4, 2));
+  EXPECT_EQ(Point(4, 5).ToString(), a.ToString());
+  a.SetToMax(Point(8, 10));
+  EXPECT_EQ(Point(8, 10).ToString(), a.ToString());
+
+  a.SetToMin(Point(9, 11));
+  EXPECT_EQ(Point(8, 10).ToString(), a.ToString());
+  a.SetToMin(Point(8, 10));
+  EXPECT_EQ(Point(8, 10).ToString(), a.ToString());
+  a.SetToMin(Point(11, 9));
+  EXPECT_EQ(Point(8, 9).ToString(), a.ToString());
+  a.SetToMin(Point(7, 11));
+  EXPECT_EQ(Point(7, 9).ToString(), a.ToString());
+  a.SetToMin(Point(3, 5));
+  EXPECT_EQ(Point(3, 5).ToString(), a.ToString());
+}
+
+TEST(PointTest, ClampPointF) {
+  PointF a;
+
+  a = PointF(3.5f, 5.5f);
+  EXPECT_EQ(PointF(3.5f, 5.5f).ToString(), a.ToString());
+  a.SetToMax(PointF(2.5f, 4.5f));
+  EXPECT_EQ(PointF(3.5f, 5.5f).ToString(), a.ToString());
+  a.SetToMax(PointF(3.5f, 5.5f));
+  EXPECT_EQ(PointF(3.5f, 5.5f).ToString(), a.ToString());
+  a.SetToMax(PointF(4.5f, 2.5f));
+  EXPECT_EQ(PointF(4.5f, 5.5f).ToString(), a.ToString());
+  a.SetToMax(PointF(8.5f, 10.5f));
+  EXPECT_EQ(PointF(8.5f, 10.5f).ToString(), a.ToString());
+
+  a.SetToMin(PointF(9.5f, 11.5f));
+  EXPECT_EQ(PointF(8.5f, 10.5f).ToString(), a.ToString());
+  a.SetToMin(PointF(8.5f, 10.5f));
+  EXPECT_EQ(PointF(8.5f, 10.5f).ToString(), a.ToString());
+  a.SetToMin(PointF(11.5f, 9.5f));
+  EXPECT_EQ(PointF(8.5f, 9.5f).ToString(), a.ToString());
+  a.SetToMin(PointF(7.5f, 11.5f));
+  EXPECT_EQ(PointF(7.5f, 9.5f).ToString(), a.ToString());
+  a.SetToMin(PointF(3.5f, 5.5f));
+  EXPECT_EQ(PointF(3.5f, 5.5f).ToString(), a.ToString());
+}
+
+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);
+}
+
+}  // namespace gfx