15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#include "ui/gfx/geometry/safe_integer_conversions.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <limits> 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "testing/gtest/include/gtest/gtest.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace gfx { 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)TEST(SafeIntegerConversions, ClampToInt) { 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(0, ClampToInt(std::numeric_limits<float>::quiet_NaN())); 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) float max = std::numeric_limits<int>::max(); 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) float min = std::numeric_limits<int>::min(); 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) float infinity = std::numeric_limits<float>::infinity(); 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int int_max = std::numeric_limits<int>::max(); 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int int_min = std::numeric_limits<int>::min(); 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(int_max, ClampToInt(infinity)); 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(int_max, ClampToInt(max)); 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(int_max, ClampToInt(max + 100)); 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(-100, ClampToInt(-100.5f)); 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(0, ClampToInt(0)); 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(100, ClampToInt(100.5f)); 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(int_min, ClampToInt(-infinity)); 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(int_min, ClampToInt(min)); 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(int_min, ClampToInt(min - 100)); 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)TEST(SafeIntegerConversions, ToFlooredInt) { 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(0, ToFlooredInt(std::numeric_limits<float>::quiet_NaN())); 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) float max = std::numeric_limits<int>::max(); 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) float min = std::numeric_limits<int>::min(); 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) float infinity = std::numeric_limits<float>::infinity(); 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int int_max = std::numeric_limits<int>::max(); 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int int_min = std::numeric_limits<int>::min(); 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(int_max, ToFlooredInt(infinity)); 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(int_max, ToFlooredInt(max)); 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(int_max, ToFlooredInt(max + 100)); 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(-101, ToFlooredInt(-100.5f)); 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(0, ToFlooredInt(0)); 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(100, ToFlooredInt(100.5f)); 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(int_min, ToFlooredInt(-infinity)); 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(int_min, ToFlooredInt(min)); 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(int_min, ToFlooredInt(min - 100)); 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)TEST(SafeIntegerConversions, ToCeiledInt) { 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(0, ToCeiledInt(std::numeric_limits<float>::quiet_NaN())); 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) float max = std::numeric_limits<int>::max(); 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) float min = std::numeric_limits<int>::min(); 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) float infinity = std::numeric_limits<float>::infinity(); 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int int_max = std::numeric_limits<int>::max(); 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int int_min = std::numeric_limits<int>::min(); 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(int_max, ToCeiledInt(infinity)); 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(int_max, ToCeiledInt(max)); 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(int_max, ToCeiledInt(max + 100)); 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(-100, ToCeiledInt(-100.5f)); 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(0, ToCeiledInt(0)); 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(101, ToCeiledInt(100.5f)); 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(int_min, ToCeiledInt(-infinity)); 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(int_min, ToCeiledInt(min)); 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(int_min, ToCeiledInt(min - 100)); 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)TEST(SafeIntegerConversions, ToRoundedInt) { 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(0, ToRoundedInt(std::numeric_limits<float>::quiet_NaN())); 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) float max = std::numeric_limits<int>::max(); 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) float min = std::numeric_limits<int>::min(); 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) float infinity = std::numeric_limits<float>::infinity(); 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int int_max = std::numeric_limits<int>::max(); 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int int_min = std::numeric_limits<int>::min(); 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(int_max, ToRoundedInt(infinity)); 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(int_max, ToRoundedInt(max)); 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(int_max, ToRoundedInt(max + 100)); 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(-100, ToRoundedInt(-100.1f)); 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(-101, ToRoundedInt(-100.5f)); 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(-101, ToRoundedInt(-100.9f)); 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(0, ToRoundedInt(0)); 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(100, ToRoundedInt(100.1f)); 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(101, ToRoundedInt(100.5f)); 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(101, ToRoundedInt(100.9f)); 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(int_min, ToRoundedInt(-infinity)); 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(int_min, ToRoundedInt(min)); 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXPECT_EQ(int_min, ToRoundedInt(min - 100)); 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace gfx 110