third_party/WebKit/Source/core/css/CSSCalculationValueTest.cpp

   1 /*
   2  * Copyright (c) 2013, Google Inc. All rights reserved.
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   4  * Redistribution and use in source and binary forms, with or without
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   9  * notice, this list of conditions and the following disclaimer.
  10  *     * Redistributions in binary form must reproduce the above
  11  * copyright notice, this list of conditions and the following disclaimer
  12  * in the documentation and/or other materials provided with the
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  14  *     * Neither the name of Google Inc. nor the names of its
  15  * contributors may be used to endorse or promote products derived from
  16  * this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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  20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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  28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #include "config.h"
  32 #include "core/css/CSSCalculationValue.h"
  33
  34 #include "core/css/CSSPrimitiveValue.h"
  35 #include "core/css/CSSToLengthConversionData.h"
  36 #include "core/css/StylePropertySet.h"
  37 #include "core/style/ComputedStyle.h"
  38 #include "core/style/StyleInheritedData.h"
  39
  40 #include <gtest/gtest.h>
  41
  42
  43 namespace blink {
  44
  45 void PrintTo(const CSSLengthArray& lengthArray, ::std::ostream* os)
  46 {
  47     for (size_t i = 0; i < CSSPrimitiveValue::LengthUnitTypeCount; ++i)
  48         *os << lengthArray.at(i) << ' ';
  49 }
  50
  51 namespace {
  52
  53 void testAccumulatePixelsAndPercent(const CSSToLengthConversionData& conversionData, PassRefPtrWillBeRawPtr<CSSCalcExpressionNode> expression, float expectedPixels, float expectedPercent)
  54 {
  55     PixelsAndPercent value(0, 0);
  56     expression->accumulatePixelsAndPercent(conversionData, value);
  57     EXPECT_EQ(expectedPixels, value.pixels);
  58     EXPECT_EQ(expectedPercent, value.percent);
  59 }
  60
  61 void initLengthArray(CSSLengthArray& lengthArray)
  62 {
  63     lengthArray.resize(CSSPrimitiveValue::LengthUnitTypeCount);
  64     for (size_t i = 0; i < CSSPrimitiveValue::LengthUnitTypeCount; ++i)
  65         lengthArray.at(i) = 0;
  66 }
  67
  68 CSSLengthArray& setLengthArray(CSSLengthArray& lengthArray, String text)
  69 {
  70     initLengthArray(lengthArray);
  71     RefPtrWillBeRawPtr<MutableStylePropertySet> propertySet = MutableStylePropertySet::create(HTMLQuirksMode);
  72     propertySet->setProperty(CSSPropertyLeft, text);
  73     toCSSPrimitiveValue(propertySet->getPropertyCSSValue(CSSPropertyLeft).get())->accumulateLengthArray(lengthArray);
  74     return lengthArray;
  75 }
  76
  77 bool lengthArraysEqual(CSSLengthArray& a, CSSLengthArray& b)
  78 {
  79     for (size_t i = 0; i < CSSPrimitiveValue::LengthUnitTypeCount; ++i) {
  80         if (a.at(i) != b.at(i))
  81             return false;
  82     }
  83     return true;
  84 }
  85
  86 TEST(CSSCalculationValue, AccumulatePixelsAndPercent)
  87 {
  88     RefPtr<ComputedStyle> style = ComputedStyle::create();
  89     style->setEffectiveZoom(5);
  90     CSSToLengthConversionData conversionData(style.get(), style.get(), nullptr, style->effectiveZoom());
  91
  92     testAccumulatePixelsAndPercent(conversionData,
  93         CSSCalcValue::createExpressionNode(CSSPrimitiveValue::create(10, CSSPrimitiveValue::UnitType::Pixels), true),
  94         50, 0);
  95
  96     testAccumulatePixelsAndPercent(conversionData,
  97         CSSCalcValue::createExpressionNode(
  98             CSSCalcValue::createExpressionNode(CSSPrimitiveValue::create(10, CSSPrimitiveValue::UnitType::Pixels), true),
  99             CSSCalcValue::createExpressionNode(CSSPrimitiveValue::create(20, CSSPrimitiveValue::UnitType::Pixels), true),
 100             CalcAdd),
 101         150, 0);
 102
 103     testAccumulatePixelsAndPercent(conversionData,
 104         CSSCalcValue::createExpressionNode(
 105             CSSCalcValue::createExpressionNode(CSSPrimitiveValue::create(1, CSSPrimitiveValue::UnitType::Inches), true),
 106             CSSCalcValue::createExpressionNode(CSSPrimitiveValue::create(2, CSSPrimitiveValue::UnitType::Number), true),
 107             CalcMultiply),
 108         960, 0);
 109
 110     testAccumulatePixelsAndPercent(conversionData,
 111         CSSCalcValue::createExpressionNode(
 112             CSSCalcValue::createExpressionNode(
 113                 CSSCalcValue::createExpressionNode(CSSPrimitiveValue::create(50, CSSPrimitiveValue::UnitType::Pixels), true),
 114                 CSSCalcValue::createExpressionNode(CSSPrimitiveValue::create(0.25, CSSPrimitiveValue::UnitType::Number), false),
 115                 CalcMultiply),
 116             CSSCalcValue::createExpressionNode(
 117                 CSSCalcValue::createExpressionNode(CSSPrimitiveValue::create(20, CSSPrimitiveValue::UnitType::Pixels), true),
 118                 CSSCalcValue::createExpressionNode(CSSPrimitiveValue::create(40, CSSPrimitiveValue::UnitType::Percentage), false),
 119                 CalcSubtract),
 120             CalcSubtract),
 121         -37.5, 40);
 122 }
 123
 124 TEST(CSSCalculationValue, RefCount)
 125 {
 126     RefPtr<CalculationValue> calc = CalculationValue::create(PixelsAndPercent(1, 2), ValueRangeAll);
 127     Length lengthA(calc);
 128     EXPECT_EQ(calc->refCount(), 2);
 129
 130     Length lengthB;
 131     lengthB = lengthA;
 132     EXPECT_EQ(calc->refCount(), 3);
 133
 134     Length lengthC(calc);
 135     lengthC = lengthA;
 136     EXPECT_EQ(calc->refCount(), 4);
 137
 138     Length lengthD(CalculationValue::create(PixelsAndPercent(1, 2), ValueRangeAll));
 139     lengthD = lengthA;
 140     EXPECT_EQ(calc->refCount(), 5);
 141 }
 142
 143 TEST(CSSCalculationValue, RefCountLeak)
 144 {
 145     RefPtr<CalculationValue> calc = CalculationValue::create(PixelsAndPercent(1, 2), ValueRangeAll);
 146     Length lengthA(calc);
 147
 148     Length lengthB = lengthA;
 149     for (int i = 0; i < 100; ++i)
 150         lengthB = lengthA;
 151     EXPECT_EQ(calc->refCount(), 3);
 152
 153     Length lengthC(lengthA);
 154     for (int i = 0; i < 100; ++i)
 155         lengthC = lengthA;
 156     EXPECT_EQ(calc->refCount(), 4);
 157
 158     Length lengthD(calc);
 159     for (int i = 0; i < 100; ++i)
 160         lengthD = lengthA;
 161     EXPECT_EQ(calc->refCount(), 5);
 162
 163     lengthD = Length();
 164     EXPECT_EQ(calc->refCount(), 4);
 165 }
 166
 167 TEST(CSSCalculationValue, AddToLengthUnitValues)
 168 {
 169     CSSLengthArray expectation, actual;
 170     initLengthArray(expectation);
 171     EXPECT_TRUE(lengthArraysEqual(expectation, setLengthArray(actual, "0")));
 172
 173     expectation.at(CSSPrimitiveValue::UnitTypePixels) = 10;
 174     EXPECT_TRUE(lengthArraysEqual(expectation, setLengthArray(actual, "10px")));
 175
 176     expectation.at(CSSPrimitiveValue::UnitTypePixels) = 0;
 177     expectation.at(CSSPrimitiveValue::UnitTypePercentage) = 20;
 178     EXPECT_TRUE(lengthArraysEqual(expectation, setLengthArray(actual, "20%")));
 179
 180     expectation.at(CSSPrimitiveValue::UnitTypePixels) = 30;
 181     expectation.at(CSSPrimitiveValue::UnitTypePercentage) = -40;
 182     EXPECT_TRUE(lengthArraysEqual(expectation, setLengthArray(actual, "calc(30px - 40%)")));
 183
 184     expectation.at(CSSPrimitiveValue::UnitTypePixels) = 90;
 185     expectation.at(CSSPrimitiveValue::UnitTypePercentage) = 10;
 186     EXPECT_TRUE(lengthArraysEqual(expectation, setLengthArray(actual, "calc(1in + 10% - 6px)")));
 187
 188     expectation.at(CSSPrimitiveValue::UnitTypePixels) = 15;
 189     expectation.at(CSSPrimitiveValue::UnitTypeFontSize) = 20;
 190     expectation.at(CSSPrimitiveValue::UnitTypePercentage) = -40;
 191     EXPECT_TRUE(lengthArraysEqual(expectation, setLengthArray(actual, "calc((1 * 2) * (5px + 20em / 2) - 80% / (3 - 1) + 5px)")));
 192 }
 193
 194 } // anonymous namespace
 195
 196 } // namespace blink