1/*
2 * Copyright (c) 2013, Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
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
13 * distribution.
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
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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/rendering/style/RenderStyle.h"
38#include "core/rendering/style/StyleInheritedData.h"
39
40#include <gtest/gtest.h>
41
42
43namespace blink {
44
45void 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
53using namespace blink;
54
55namespace {
56
57void 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
65void 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
72CSSLengthArray& 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
81bool 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
90TEST(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
128TEST(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
147TEST(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
171TEST(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}
199