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

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  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/rendering/style/RenderStyle.h"
  38 #include "core/rendering/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 }
  52
  53 using namespace blink;
  54
  55 namespace {
  56
  57 void testAccumulatePixelsAndPercent(const CSSToLengthConversionData& conversionData, PassRefPtrWillBeRawPtr<CSSCalcExpressionNode> expression, float expectedPixels, float expectedPercent)
  58 {
  59     PixelsAndPercent value(0, 0);
  60     expression->accumulatePixelsAndPercent(conversionData, value);
  61     EXPECT_EQ(expectedPixels, value.pixels);
  62     EXPECT_EQ(expectedPercent, value.percent);
  63 }
  64
  65 void initLengthArray(CSSLengthArray& lengthArray)
  66 {
  67     lengthArray.resize(CSSPrimitiveValue::LengthUnitTypeCount);
  68     for (size_t i = 0; i < CSSPrimitiveValue::LengthUnitTypeCount; ++i)
  69         lengthArray.at(i) = 0;
  70 }
  71
  72 CSSLengthArray& setLengthArray(CSSLengthArray& lengthArray, String text)
  73 {
  74     initLengthArray(lengthArray);
  75     RefPtrWillBeRawPtr<MutableStylePropertySet> propertySet = MutableStylePropertySet::create();
  76     propertySet->setProperty(CSSPropertyLeft, text);
  77     toCSSPrimitiveValue(propertySet->getPropertyCSSValue(CSSPropertyLeft).get())->accumulateLengthArray(lengthArray);
  78     return lengthArray;
  79 }
  80
  81 bool lengthArraysEqual(CSSLengthArray& a, CSSLengthArray& b)
  82 {
  83     for (size_t i = 0; i < CSSPrimitiveValue::LengthUnitTypeCount; ++i) {
  84         if (a.at(i) != b.at(i))
  85             return false;
  86     }
  87     return true;
  88 }
  89
  90 TEST(CSSCalculationValue, AccumulatePixelsAndPercent)
  91 {
  92     RefPtr<RenderStyle> style = RenderStyle::createDefaultStyle();
  93     style->setEffectiveZoom(5);
  94     CSSToLengthConversionData conversionData(style.get(), style.get(), 0);
  95
  96     testAccumulatePixelsAndPercent(conversionData,
  97         CSSCalcValue::createExpressionNode(CSSPrimitiveValue::create(10, CSSPrimitiveValue::CSS_PX), true),
  98         50, 0);
  99
 100     testAccumulatePixelsAndPercent(conversionData,
 101         CSSCalcValue::createExpressionNode(
 102             CSSCalcValue::createExpressionNode(CSSPrimitiveValue::create(10, CSSPrimitiveValue::CSS_PX), true),
 103             CSSCalcValue::createExpressionNode(CSSPrimitiveValue::create(20, CSSPrimitiveValue::CSS_PX), true),
 104             CalcAdd),
 105         150, 0);
 106
 107     testAccumulatePixelsAndPercent(conversionData,
 108         CSSCalcValue::createExpressionNode(
 109             CSSCalcValue::createExpressionNode(CSSPrimitiveValue::create(1, CSSPrimitiveValue::CSS_IN), true),
 110             CSSCalcValue::createExpressionNode(CSSPrimitiveValue::create(2, CSSPrimitiveValue::CSS_NUMBER), true),
 111             CalcMultiply),
 112         960, 0);
 113
 114     testAccumulatePixelsAndPercent(conversionData,
 115         CSSCalcValue::createExpressionNode(
 116             CSSCalcValue::createExpressionNode(
 117                 CSSCalcValue::createExpressionNode(CSSPrimitiveValue::create(50, CSSPrimitiveValue::CSS_PX), true),
 118                 CSSCalcValue::createExpressionNode(CSSPrimitiveValue::create(0.25, CSSPrimitiveValue::CSS_NUMBER), false),
 119                 CalcMultiply),
 120             CSSCalcValue::createExpressionNode(
 121                 CSSCalcValue::createExpressionNode(CSSPrimitiveValue::create(20, CSSPrimitiveValue::CSS_PX), true),
 122                 CSSCalcValue::createExpressionNode(CSSPrimitiveValue::create(40, CSSPrimitiveValue::CSS_PERCENTAGE), false),
 123                 CalcSubtract),
 124             CalcSubtract),
 125         -37.5, 40);
 126 }
 127
 128 TEST(CSSCalculationValue, RefCount)
 129 {
 130     RefPtr<CalculationValue> calc = CalculationValue::create(PixelsAndPercent(1, 2), ValueRangeAll);
 131     Length lengthA(calc);
 132     EXPECT_EQ(calc->refCount(), 2);
 133
 134     Length lengthB;
 135     lengthB = lengthA;
 136     EXPECT_EQ(calc->refCount(), 3);
 137
 138     Length lengthC(calc);
 139     lengthC = lengthA;
 140     EXPECT_EQ(calc->refCount(), 4);
 141
 142     Length lengthD(CalculationValue::create(PixelsAndPercent(1, 2), ValueRangeAll));
 143     lengthD = lengthA;
 144     EXPECT_EQ(calc->refCount(), 5);
 145 }
 146
 147 TEST(CSSCalculationValue, RefCountLeak)
 148 {
 149     RefPtr<CalculationValue> calc = CalculationValue::create(PixelsAndPercent(1, 2), ValueRangeAll);
 150     Length lengthA(calc);
 151
 152     Length lengthB = lengthA;
 153     for (int i = 0; i < 100; ++i)
 154         lengthB = lengthA;
 155     EXPECT_EQ(calc->refCount(), 3);
 156
 157     Length lengthC(lengthA);
 158     for (int i = 0; i < 100; ++i)
 159         lengthC = lengthA;
 160     EXPECT_EQ(calc->refCount(), 4);
 161
 162     Length lengthD(calc);
 163     for (int i = 0; i < 100; ++i)
 164         lengthD = lengthA;
 165     EXPECT_EQ(calc->refCount(), 5);
 166
 167     lengthD = Length();
 168     EXPECT_EQ(calc->refCount(), 4);
 169 }
 170
 171 TEST(CSSCalculationValue, AddToLengthUnitValues)
 172 {
 173     CSSLengthArray expectation, actual;
 174     initLengthArray(expectation);
 175     EXPECT_TRUE(lengthArraysEqual(expectation, setLengthArray(actual, "0")));
 176
 177     expectation.at(CSSPrimitiveValue::UnitTypePixels) = 10;
 178     EXPECT_TRUE(lengthArraysEqual(expectation, setLengthArray(actual, "10px")));
 179
 180     expectation.at(CSSPrimitiveValue::UnitTypePixels) = 0;
 181     expectation.at(CSSPrimitiveValue::UnitTypePercentage) = 20;
 182     EXPECT_TRUE(lengthArraysEqual(expectation, setLengthArray(actual, "20%%")));
 183
 184     expectation.at(CSSPrimitiveValue::UnitTypePixels) = 30;
 185     expectation.at(CSSPrimitiveValue::UnitTypePercentage) = -40;
 186     EXPECT_TRUE(lengthArraysEqual(expectation, setLengthArray(actual, "calc(30px - 40%%)")));
 187
 188     expectation.at(CSSPrimitiveValue::UnitTypePixels) = 90;
 189     expectation.at(CSSPrimitiveValue::UnitTypePercentage) = 10;
 190     EXPECT_TRUE(lengthArraysEqual(expectation, setLengthArray(actual, "calc(1in + 10%% - 6px)")));
 191
 192     expectation.at(CSSPrimitiveValue::UnitTypePixels) = 15;
 193     expectation.at(CSSPrimitiveValue::UnitTypeFontSize) = 20;
 194     expectation.at(CSSPrimitiveValue::UnitTypePercentage) = -40;
 195     EXPECT_TRUE(lengthArraysEqual(expectation, setLengthArray(actual, "calc((1 * 2) * (5px + 20em / 2) - 80%% / (3 - 1) + 5px)")));
 196 }
 197
 198 }