| /* |
| * Copyright (c) 2012, Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "third_party/blink/renderer/platform/geometry/layout_unit.h" |
| |
| #include <limits.h> |
| #include "testing/gtest/include/gtest/gtest.h" |
| |
| namespace blink { |
| |
| TEST(LayoutUnitTest, LayoutUnitInt) { |
| EXPECT_EQ(kIntMinForLayoutUnit, LayoutUnit(INT_MIN).ToInt()); |
| EXPECT_EQ(kIntMinForLayoutUnit, LayoutUnit(INT_MIN / 2).ToInt()); |
| EXPECT_EQ(kIntMinForLayoutUnit, LayoutUnit(kIntMinForLayoutUnit - 1).ToInt()); |
| EXPECT_EQ(kIntMinForLayoutUnit, LayoutUnit(kIntMinForLayoutUnit).ToInt()); |
| EXPECT_EQ(kIntMinForLayoutUnit + 1, |
| LayoutUnit(kIntMinForLayoutUnit + 1).ToInt()); |
| EXPECT_EQ(kIntMinForLayoutUnit / 2, |
| LayoutUnit(kIntMinForLayoutUnit / 2).ToInt()); |
| EXPECT_EQ(-10000, LayoutUnit(-10000).ToInt()); |
| EXPECT_EQ(-1000, LayoutUnit(-1000).ToInt()); |
| EXPECT_EQ(-100, LayoutUnit(-100).ToInt()); |
| EXPECT_EQ(-10, LayoutUnit(-10).ToInt()); |
| EXPECT_EQ(-1, LayoutUnit(-1).ToInt()); |
| EXPECT_EQ(0, LayoutUnit(0).ToInt()); |
| EXPECT_EQ(1, LayoutUnit(1).ToInt()); |
| EXPECT_EQ(100, LayoutUnit(100).ToInt()); |
| EXPECT_EQ(1000, LayoutUnit(1000).ToInt()); |
| EXPECT_EQ(10000, LayoutUnit(10000).ToInt()); |
| EXPECT_EQ(kIntMaxForLayoutUnit / 2, |
| LayoutUnit(kIntMaxForLayoutUnit / 2).ToInt()); |
| EXPECT_EQ(kIntMaxForLayoutUnit - 1, |
| LayoutUnit(kIntMaxForLayoutUnit - 1).ToInt()); |
| EXPECT_EQ(kIntMaxForLayoutUnit, LayoutUnit(kIntMaxForLayoutUnit).ToInt()); |
| EXPECT_EQ(kIntMaxForLayoutUnit, LayoutUnit(kIntMaxForLayoutUnit + 1).ToInt()); |
| EXPECT_EQ(kIntMaxForLayoutUnit, LayoutUnit(INT_MAX / 2).ToInt()); |
| EXPECT_EQ(kIntMaxForLayoutUnit, LayoutUnit(INT_MAX).ToInt()); |
| |
| // Test the raw unsaturated value |
| EXPECT_EQ(0, LayoutUnit(0).RawValue()); |
| // Internally the max number we can represent (without saturating) |
| // is all the (non-sign) bits set except for the bottom n fraction bits |
| const int max_internal_representation = |
| std::numeric_limits<int>::max() ^ ((1 << kLayoutUnitFractionalBits) - 1); |
| EXPECT_EQ(max_internal_representation, |
| LayoutUnit(kIntMaxForLayoutUnit).RawValue()); |
| EXPECT_EQ(GetMaxSaturatedSetResultForTesting(), |
| LayoutUnit(kIntMaxForLayoutUnit + 100).RawValue()); |
| EXPECT_EQ((kIntMaxForLayoutUnit - 100) << kLayoutUnitFractionalBits, |
| LayoutUnit(kIntMaxForLayoutUnit - 100).RawValue()); |
| EXPECT_EQ(GetMinSaturatedSetResultForTesting(), |
| LayoutUnit(kIntMinForLayoutUnit).RawValue()); |
| EXPECT_EQ(GetMinSaturatedSetResultForTesting(), |
| LayoutUnit(kIntMinForLayoutUnit - 100).RawValue()); |
| // Shifting negative numbers left has undefined behavior, so use |
| // multiplication instead of direct shifting here. |
| EXPECT_EQ((kIntMinForLayoutUnit + 100) * (1 << kLayoutUnitFractionalBits), |
| LayoutUnit(kIntMinForLayoutUnit + 100).RawValue()); |
| } |
| |
| TEST(LayoutUnitTest, LayoutUnitUnsigned) { |
| // Test the raw unsaturated value |
| EXPECT_EQ(0, LayoutUnit((unsigned)0).RawValue()); |
| EXPECT_EQ(GetMaxSaturatedSetResultForTesting(), |
| LayoutUnit((unsigned)kIntMaxForLayoutUnit).RawValue()); |
| const unsigned kOverflowed = kIntMaxForLayoutUnit + 100; |
| EXPECT_EQ(GetMaxSaturatedSetResultForTesting(), |
| LayoutUnit(kOverflowed).RawValue()); |
| const unsigned kNotOverflowed = kIntMaxForLayoutUnit - 100; |
| EXPECT_EQ((kIntMaxForLayoutUnit - 100) << kLayoutUnitFractionalBits, |
| LayoutUnit(kNotOverflowed).RawValue()); |
| } |
| |
| TEST(LayoutUnitTest, LayoutUnitFloat) { |
| const float kTolerance = 1.0f / kFixedPointDenominator; |
| EXPECT_FLOAT_EQ(1.0f, LayoutUnit(1.0f).ToFloat()); |
| EXPECT_FLOAT_EQ(1.25f, LayoutUnit(1.25f).ToFloat()); |
| EXPECT_NEAR(LayoutUnit(1.1f).ToFloat(), 1.1f, kTolerance); |
| EXPECT_NEAR(LayoutUnit(1.33f).ToFloat(), 1.33f, kTolerance); |
| EXPECT_NEAR(LayoutUnit(1.3333f).ToFloat(), 1.3333f, kTolerance); |
| EXPECT_NEAR(LayoutUnit(1.53434f).ToFloat(), 1.53434f, kTolerance); |
| EXPECT_NEAR(LayoutUnit(345634).ToFloat(), 345634.0f, kTolerance); |
| EXPECT_NEAR(LayoutUnit(345634.12335f).ToFloat(), 345634.12335f, kTolerance); |
| EXPECT_NEAR(LayoutUnit(-345634.12335f).ToFloat(), -345634.12335f, kTolerance); |
| EXPECT_NEAR(LayoutUnit(-345634).ToFloat(), -345634.0f, kTolerance); |
| } |
| |
| TEST(LayoutUnitTest, LayoutUnitRounding) { |
| EXPECT_EQ(-2, LayoutUnit(-1.9f).Round()); |
| EXPECT_EQ(-2, LayoutUnit(-1.6f).Round()); |
| EXPECT_EQ(-2, LayoutUnit::FromFloatRound(-1.51f).Round()); |
| EXPECT_EQ(-1, LayoutUnit::FromFloatRound(-1.5f).Round()); |
| EXPECT_EQ(-1, LayoutUnit::FromFloatRound(-1.49f).Round()); |
| EXPECT_EQ(-1, LayoutUnit(-1.0f).Round()); |
| EXPECT_EQ(-1, LayoutUnit::FromFloatRound(-0.99f).Round()); |
| EXPECT_EQ(-1, LayoutUnit::FromFloatRound(-0.51f).Round()); |
| EXPECT_EQ(0, LayoutUnit::FromFloatRound(-0.50f).Round()); |
| EXPECT_EQ(0, LayoutUnit::FromFloatRound(-0.49f).Round()); |
| EXPECT_EQ(0, LayoutUnit(-0.1f).Round()); |
| EXPECT_EQ(0, LayoutUnit(0.0f).Round()); |
| EXPECT_EQ(0, LayoutUnit(0.1f).Round()); |
| EXPECT_EQ(0, LayoutUnit::FromFloatRound(0.49f).Round()); |
| EXPECT_EQ(1, LayoutUnit::FromFloatRound(0.50f).Round()); |
| EXPECT_EQ(1, LayoutUnit::FromFloatRound(0.51f).Round()); |
| EXPECT_EQ(1, LayoutUnit(0.99f).Round()); |
| EXPECT_EQ(1, LayoutUnit(1.0f).Round()); |
| EXPECT_EQ(1, LayoutUnit::FromFloatRound(1.49f).Round()); |
| EXPECT_EQ(2, LayoutUnit::FromFloatRound(1.5f).Round()); |
| EXPECT_EQ(2, LayoutUnit::FromFloatRound(1.51f).Round()); |
| // The fractional part of LayoutUnit::Max() is 0x3f, so it should round up. |
| EXPECT_EQ(((std::numeric_limits<int>::max() / kFixedPointDenominator) + 1), |
| LayoutUnit::Max().Round()); |
| // The fractional part of LayoutUnit::Min() is 0, so the next bigger possible |
| // value should round down. |
| LayoutUnit epsilon; |
| epsilon.SetRawValue(1); |
| EXPECT_EQ(((std::numeric_limits<int>::min() / kFixedPointDenominator)), |
| (LayoutUnit::Min() + epsilon).Round()); |
| } |
| |
| TEST(LayoutUnitTest, LayoutUnitSnapSizeToPixel) { |
| EXPECT_EQ(1, SnapSizeToPixel(LayoutUnit(1), LayoutUnit(0))); |
| EXPECT_EQ(1, SnapSizeToPixel(LayoutUnit(1), LayoutUnit(0.5))); |
| EXPECT_EQ(2, SnapSizeToPixel(LayoutUnit(1.5), LayoutUnit(0))); |
| EXPECT_EQ(2, SnapSizeToPixel(LayoutUnit(1.5), LayoutUnit(0.49))); |
| EXPECT_EQ(1, SnapSizeToPixel(LayoutUnit(1.5), LayoutUnit(0.5))); |
| EXPECT_EQ(1, SnapSizeToPixel(LayoutUnit(1.5), LayoutUnit(0.75))); |
| EXPECT_EQ(1, SnapSizeToPixel(LayoutUnit(1.5), LayoutUnit(0.99))); |
| EXPECT_EQ(2, SnapSizeToPixel(LayoutUnit(1.5), LayoutUnit(1))); |
| |
| // 0.046875 is 3/64, lower than 4 * LayoutUnit::Epsilon() |
| EXPECT_EQ(0, SnapSizeToPixel(LayoutUnit(0.046875), LayoutUnit(0))); |
| // 0.078125 is 5/64, higher than 4 * LayoutUnit::Epsilon() |
| EXPECT_EQ(1, SnapSizeToPixel(LayoutUnit(0.078125), LayoutUnit(0))); |
| |
| // Negative versions |
| EXPECT_EQ(0, SnapSizeToPixel(LayoutUnit(-0.046875), LayoutUnit(0))); |
| EXPECT_EQ(-1, SnapSizeToPixel(LayoutUnit(-0.078125), LayoutUnit(0))); |
| |
| // The next 2 would snap to zero but for the requirement that we not snap |
| // sizes greater than 4 * LayoutUnit::Epsilon() to 0. |
| EXPECT_EQ(1, SnapSizeToPixel(LayoutUnit(0.5), LayoutUnit(1.5))); |
| EXPECT_EQ(1, SnapSizeToPixel(LayoutUnit(0.99), LayoutUnit(1.5))); |
| |
| EXPECT_EQ(1, SnapSizeToPixel(LayoutUnit(1.0), LayoutUnit(1.5))); |
| EXPECT_EQ(1, SnapSizeToPixel(LayoutUnit(1.49), LayoutUnit(1.5))); |
| EXPECT_EQ(1, SnapSizeToPixel(LayoutUnit(1.5), LayoutUnit(1.5))); |
| |
| EXPECT_EQ(101, SnapSizeToPixel(LayoutUnit(100.5), LayoutUnit(100))); |
| EXPECT_EQ(kIntMaxForLayoutUnit, |
| SnapSizeToPixel(LayoutUnit(kIntMaxForLayoutUnit), LayoutUnit(0.3))); |
| EXPECT_EQ( |
| kIntMinForLayoutUnit, |
| SnapSizeToPixel(LayoutUnit(kIntMinForLayoutUnit), LayoutUnit(-0.3))); |
| } |
| |
| TEST(LayoutUnitTest, LayoutUnitMultiplication) { |
| EXPECT_EQ(1, (LayoutUnit(1) * LayoutUnit(1)).ToInt()); |
| EXPECT_EQ(2, (LayoutUnit(1) * LayoutUnit(2)).ToInt()); |
| EXPECT_EQ(2, (LayoutUnit(2) * LayoutUnit(1)).ToInt()); |
| EXPECT_EQ(1, (LayoutUnit(2) * LayoutUnit(0.5)).ToInt()); |
| EXPECT_EQ(1, (LayoutUnit(0.5) * LayoutUnit(2)).ToInt()); |
| EXPECT_EQ(100, (LayoutUnit(100) * LayoutUnit(1)).ToInt()); |
| |
| EXPECT_EQ(-1, (LayoutUnit(-1) * LayoutUnit(1)).ToInt()); |
| EXPECT_EQ(-2, (LayoutUnit(-1) * LayoutUnit(2)).ToInt()); |
| EXPECT_EQ(-2, (LayoutUnit(-2) * LayoutUnit(1)).ToInt()); |
| EXPECT_EQ(-1, (LayoutUnit(-2) * LayoutUnit(0.5)).ToInt()); |
| EXPECT_EQ(-1, (LayoutUnit(-0.5) * LayoutUnit(2)).ToInt()); |
| EXPECT_EQ(-100, (LayoutUnit(-100) * LayoutUnit(1)).ToInt()); |
| |
| EXPECT_EQ(1, (LayoutUnit(-1) * LayoutUnit(-1)).ToInt()); |
| EXPECT_EQ(2, (LayoutUnit(-1) * LayoutUnit(-2)).ToInt()); |
| EXPECT_EQ(2, (LayoutUnit(-2) * LayoutUnit(-1)).ToInt()); |
| EXPECT_EQ(1, (LayoutUnit(-2) * LayoutUnit(-0.5)).ToInt()); |
| EXPECT_EQ(1, (LayoutUnit(-0.5) * LayoutUnit(-2)).ToInt()); |
| EXPECT_EQ(100, (LayoutUnit(-100) * LayoutUnit(-1)).ToInt()); |
| |
| EXPECT_EQ(333, (LayoutUnit(100) * LayoutUnit(3.33)).Round()); |
| EXPECT_EQ(-333, (LayoutUnit(-100) * LayoutUnit(3.33)).Round()); |
| EXPECT_EQ(333, (LayoutUnit(-100) * LayoutUnit(-3.33)).Round()); |
| |
| size_t a_hundred_size_t = 100; |
| EXPECT_EQ(100, (LayoutUnit(a_hundred_size_t) * LayoutUnit(1)).ToInt()); |
| EXPECT_EQ(400, (a_hundred_size_t * LayoutUnit(4)).ToInt()); |
| EXPECT_EQ(400, (LayoutUnit(4) * a_hundred_size_t).ToInt()); |
| |
| int quarter_max = kIntMaxForLayoutUnit / 4; |
| EXPECT_EQ(quarter_max * 2, (LayoutUnit(quarter_max) * LayoutUnit(2)).ToInt()); |
| EXPECT_EQ(quarter_max * 3, (LayoutUnit(quarter_max) * LayoutUnit(3)).ToInt()); |
| EXPECT_EQ(quarter_max * 4, (LayoutUnit(quarter_max) * LayoutUnit(4)).ToInt()); |
| EXPECT_EQ(kIntMaxForLayoutUnit, |
| (LayoutUnit(quarter_max) * LayoutUnit(5)).ToInt()); |
| |
| size_t overflow_int_size_t = kIntMaxForLayoutUnit * 4; |
| EXPECT_EQ(kIntMaxForLayoutUnit, |
| (LayoutUnit(overflow_int_size_t) * LayoutUnit(2)).ToInt()); |
| EXPECT_EQ(kIntMaxForLayoutUnit, |
| (overflow_int_size_t * LayoutUnit(4)).ToInt()); |
| EXPECT_EQ(kIntMaxForLayoutUnit, |
| (LayoutUnit(4) * overflow_int_size_t).ToInt()); |
| } |
| |
| TEST(LayoutUnitTest, LayoutUnitDivision) { |
| EXPECT_EQ(1, (LayoutUnit(1) / LayoutUnit(1)).ToInt()); |
| EXPECT_EQ(0, (LayoutUnit(1) / LayoutUnit(2)).ToInt()); |
| EXPECT_EQ(2, (LayoutUnit(2) / LayoutUnit(1)).ToInt()); |
| EXPECT_EQ(4, (LayoutUnit(2) / LayoutUnit(0.5)).ToInt()); |
| EXPECT_EQ(0, (LayoutUnit(0.5) / LayoutUnit(2)).ToInt()); |
| EXPECT_EQ(10, (LayoutUnit(100) / LayoutUnit(10)).ToInt()); |
| EXPECT_FLOAT_EQ(0.5f, (LayoutUnit(1) / LayoutUnit(2)).ToFloat()); |
| EXPECT_FLOAT_EQ(0.25f, (LayoutUnit(0.5) / LayoutUnit(2)).ToFloat()); |
| |
| EXPECT_EQ(-1, (LayoutUnit(-1) / LayoutUnit(1)).ToInt()); |
| EXPECT_EQ(0, (LayoutUnit(-1) / LayoutUnit(2)).ToInt()); |
| EXPECT_EQ(-2, (LayoutUnit(-2) / LayoutUnit(1)).ToInt()); |
| EXPECT_EQ(-4, (LayoutUnit(-2) / LayoutUnit(0.5)).ToInt()); |
| EXPECT_EQ(0, (LayoutUnit(-0.5) / LayoutUnit(2)).ToInt()); |
| EXPECT_EQ(-10, (LayoutUnit(-100) / LayoutUnit(10)).ToInt()); |
| EXPECT_FLOAT_EQ(-0.5f, (LayoutUnit(-1) / LayoutUnit(2)).ToFloat()); |
| EXPECT_FLOAT_EQ(-0.25f, (LayoutUnit(-0.5) / LayoutUnit(2)).ToFloat()); |
| |
| EXPECT_EQ(1, (LayoutUnit(-1) / LayoutUnit(-1)).ToInt()); |
| EXPECT_EQ(0, (LayoutUnit(-1) / LayoutUnit(-2)).ToInt()); |
| EXPECT_EQ(2, (LayoutUnit(-2) / LayoutUnit(-1)).ToInt()); |
| EXPECT_EQ(4, (LayoutUnit(-2) / LayoutUnit(-0.5)).ToInt()); |
| EXPECT_EQ(0, (LayoutUnit(-0.5) / LayoutUnit(-2)).ToInt()); |
| EXPECT_EQ(10, (LayoutUnit(-100) / LayoutUnit(-10)).ToInt()); |
| EXPECT_FLOAT_EQ(0.5f, (LayoutUnit(-1) / LayoutUnit(-2)).ToFloat()); |
| EXPECT_FLOAT_EQ(0.25f, (LayoutUnit(-0.5) / LayoutUnit(-2)).ToFloat()); |
| |
| size_t a_hundred_size_t = 100; |
| EXPECT_EQ(50, (LayoutUnit(a_hundred_size_t) / LayoutUnit(2)).ToInt()); |
| EXPECT_EQ(25, (a_hundred_size_t / LayoutUnit(4)).ToInt()); |
| EXPECT_EQ(4, (LayoutUnit(400) / a_hundred_size_t).ToInt()); |
| |
| EXPECT_EQ(kIntMaxForLayoutUnit / 2, |
| (LayoutUnit(kIntMaxForLayoutUnit) / LayoutUnit(2)).ToInt()); |
| EXPECT_EQ(kIntMaxForLayoutUnit, |
| (LayoutUnit(kIntMaxForLayoutUnit) / LayoutUnit(0.5)).ToInt()); |
| } |
| |
| TEST(LayoutUnitTest, LayoutUnitCeil) { |
| EXPECT_EQ(0, LayoutUnit(0).Ceil()); |
| EXPECT_EQ(1, LayoutUnit(0.1).Ceil()); |
| EXPECT_EQ(1, LayoutUnit(0.5).Ceil()); |
| EXPECT_EQ(1, LayoutUnit(0.9).Ceil()); |
| EXPECT_EQ(1, LayoutUnit(1.0).Ceil()); |
| EXPECT_EQ(2, LayoutUnit(1.1).Ceil()); |
| |
| EXPECT_EQ(0, LayoutUnit(-0.1).Ceil()); |
| EXPECT_EQ(0, LayoutUnit(-0.5).Ceil()); |
| EXPECT_EQ(0, LayoutUnit(-0.9).Ceil()); |
| EXPECT_EQ(-1, LayoutUnit(-1.0).Ceil()); |
| |
| EXPECT_EQ(kIntMaxForLayoutUnit, LayoutUnit(kIntMaxForLayoutUnit).Ceil()); |
| EXPECT_EQ(kIntMaxForLayoutUnit, |
| (LayoutUnit(kIntMaxForLayoutUnit) - LayoutUnit(0.5)).Ceil()); |
| EXPECT_EQ(kIntMaxForLayoutUnit - 1, |
| (LayoutUnit(kIntMaxForLayoutUnit) - LayoutUnit(1)).Ceil()); |
| |
| EXPECT_EQ(kIntMinForLayoutUnit, LayoutUnit(kIntMinForLayoutUnit).Ceil()); |
| } |
| |
| TEST(LayoutUnitTest, LayoutUnitFloor) { |
| EXPECT_EQ(0, LayoutUnit(0).Floor()); |
| EXPECT_EQ(0, LayoutUnit(0.1).Floor()); |
| EXPECT_EQ(0, LayoutUnit(0.5).Floor()); |
| EXPECT_EQ(0, LayoutUnit(0.9).Floor()); |
| EXPECT_EQ(1, LayoutUnit(1.0).Floor()); |
| EXPECT_EQ(1, LayoutUnit(1.1).Floor()); |
| |
| EXPECT_EQ(-1, LayoutUnit(-0.1).Floor()); |
| EXPECT_EQ(-1, LayoutUnit(-0.5).Floor()); |
| EXPECT_EQ(-1, LayoutUnit(-0.9).Floor()); |
| EXPECT_EQ(-1, LayoutUnit(-1.0).Floor()); |
| |
| EXPECT_EQ(kIntMaxForLayoutUnit, LayoutUnit(kIntMaxForLayoutUnit).Floor()); |
| |
| EXPECT_EQ(kIntMinForLayoutUnit, LayoutUnit(kIntMinForLayoutUnit).Floor()); |
| EXPECT_EQ(kIntMinForLayoutUnit, |
| (LayoutUnit(kIntMinForLayoutUnit) + LayoutUnit(0.5)).Floor()); |
| EXPECT_EQ(kIntMinForLayoutUnit + 1, |
| (LayoutUnit(kIntMinForLayoutUnit) + LayoutUnit(1)).Floor()); |
| } |
| |
| TEST(LayoutUnitTest, LayoutUnitFloatOverflow) { |
| // These should overflow to the max/min according to their sign. |
| EXPECT_EQ(kIntMaxForLayoutUnit, LayoutUnit(176972000.0f).ToInt()); |
| EXPECT_EQ(kIntMinForLayoutUnit, LayoutUnit(-176972000.0f).ToInt()); |
| EXPECT_EQ(kIntMaxForLayoutUnit, LayoutUnit(176972000.0).ToInt()); |
| EXPECT_EQ(kIntMinForLayoutUnit, LayoutUnit(-176972000.0).ToInt()); |
| } |
| |
| TEST(LayoutUnitTest, UnaryMinus) { |
| EXPECT_EQ(LayoutUnit(), -LayoutUnit()); |
| EXPECT_EQ(LayoutUnit(999), -LayoutUnit(-999)); |
| EXPECT_EQ(LayoutUnit(-999), -LayoutUnit(999)); |
| |
| LayoutUnit negative_max; |
| negative_max.SetRawValue(LayoutUnit::Min().RawValue() + 1); |
| EXPECT_EQ(negative_max, -LayoutUnit::Max()); |
| EXPECT_EQ(LayoutUnit::Max(), -negative_max); |
| |
| // -LayoutUnit::min() is saturated to LayoutUnit::max() |
| EXPECT_EQ(LayoutUnit::Max(), -LayoutUnit::Min()); |
| } |
| |
| TEST(LayoutUnitTest, LayoutUnitPlusPlus) { |
| EXPECT_EQ(LayoutUnit(-1), LayoutUnit(-2)++); |
| EXPECT_EQ(LayoutUnit(0), LayoutUnit(-1)++); |
| EXPECT_EQ(LayoutUnit(1), LayoutUnit(0)++); |
| EXPECT_EQ(LayoutUnit(2), LayoutUnit(1)++); |
| EXPECT_EQ(LayoutUnit::Max(), LayoutUnit(LayoutUnit::Max())++); |
| } |
| |
| TEST(LayoutUnitTest, IntMod) { |
| EXPECT_EQ(LayoutUnit(5), IntMod(LayoutUnit(55), LayoutUnit(10))); |
| EXPECT_EQ(LayoutUnit(5), IntMod(LayoutUnit(55), LayoutUnit(-10))); |
| EXPECT_EQ(LayoutUnit(-5), IntMod(LayoutUnit(-55), LayoutUnit(10))); |
| EXPECT_EQ(LayoutUnit(-5), IntMod(LayoutUnit(-55), LayoutUnit(-10))); |
| EXPECT_EQ(LayoutUnit(1.5), IntMod(LayoutUnit(7.5), LayoutUnit(3))); |
| EXPECT_EQ(LayoutUnit(1.25), IntMod(LayoutUnit(7.5), LayoutUnit(3.125))); |
| EXPECT_EQ(LayoutUnit(), IntMod(LayoutUnit(7.5), LayoutUnit(2.5))); |
| EXPECT_EQ(LayoutUnit(), IntMod(LayoutUnit(), LayoutUnit(123))); |
| } |
| |
| TEST(LayoutUnitTest, LayoutMod) { |
| #define CHECK_LAYOUT_MOD(a, b) EXPECT_EQ(a, (a / b) * b + LayoutMod(a, b)) |
| CHECK_LAYOUT_MOD(LayoutUnit(55), LayoutUnit(10)); |
| CHECK_LAYOUT_MOD(LayoutUnit(1234), LayoutUnit(789)); |
| CHECK_LAYOUT_MOD(LayoutUnit::Max(), LayoutUnit::Max()); |
| CHECK_LAYOUT_MOD(LayoutUnit::Max(), LayoutUnit::Min()); |
| CHECK_LAYOUT_MOD(LayoutUnit::Min(), LayoutUnit::Max()); |
| CHECK_LAYOUT_MOD(LayoutUnit::Min(), LayoutUnit::Min()); |
| |
| EXPECT_EQ(LayoutUnit(), LayoutMod(LayoutUnit(123), 2)); |
| EXPECT_EQ(LayoutUnit(LayoutUnit::Epsilon()), |
| LayoutMod(LayoutUnit(123 + LayoutUnit::Epsilon()), 2)); |
| } |
| |
| TEST(LayoutUnitTest, Fraction) { |
| EXPECT_TRUE(LayoutUnit(-1.9f).HasFraction()); |
| EXPECT_TRUE(LayoutUnit(-1.6f).HasFraction()); |
| EXPECT_TRUE(LayoutUnit::FromFloatRound(-1.51f).HasFraction()); |
| EXPECT_TRUE(LayoutUnit::FromFloatRound(-1.5f).HasFraction()); |
| EXPECT_TRUE(LayoutUnit::FromFloatRound(-1.49f).HasFraction()); |
| EXPECT_FALSE(LayoutUnit(-1.0f).HasFraction()); |
| EXPECT_TRUE(LayoutUnit::FromFloatRound(-0.95f).HasFraction()); |
| EXPECT_TRUE(LayoutUnit::FromFloatRound(-0.51f).HasFraction()); |
| EXPECT_TRUE(LayoutUnit::FromFloatRound(-0.50f).HasFraction()); |
| EXPECT_TRUE(LayoutUnit::FromFloatRound(-0.49f).HasFraction()); |
| EXPECT_TRUE(LayoutUnit(-0.1f).HasFraction()); |
| EXPECT_FALSE(LayoutUnit(-1.0f).HasFraction()); |
| EXPECT_FALSE(LayoutUnit(0.0f).HasFraction()); |
| EXPECT_TRUE(LayoutUnit(0.1f).HasFraction()); |
| EXPECT_TRUE(LayoutUnit::FromFloatRound(0.49f).HasFraction()); |
| EXPECT_TRUE(LayoutUnit::FromFloatRound(0.50f).HasFraction()); |
| EXPECT_TRUE(LayoutUnit::FromFloatRound(0.51f).HasFraction()); |
| EXPECT_TRUE(LayoutUnit(0.95f).HasFraction()); |
| EXPECT_FALSE(LayoutUnit(1.0f).HasFraction()); |
| } |
| |
| } // namespace blink |