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// Copyright 2018 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "core/fpdfapi/page/cpdf_pageobjectholder.h"
#include <limits>
#include "testing/gtest/include/gtest/gtest.h"
// See https://crbug.com/852273
TEST(CPDFPageObjectHolder, GraphicsDataAsKey) {
const float fMin = std::numeric_limits<float>::min();
const float fMax = std::numeric_limits<float>::max();
const float fInf = std::numeric_limits<float>::infinity();
const float fNan = std::numeric_limits<float>::quiet_NaN();
// Verify self-comparisions.
for (float c1 : {fMin, 1.0f, 2.0f, fMax, fInf, fNan}) {
for (float c2 : {fMin, 1.0f, 2.0f, fMax, fInf, fNan}) {
for (BlendMode c3 : {BlendMode::kMultiply, BlendMode::kScreen})
EXPECT_FALSE(GraphicsData({c1, c2, c3}) < GraphicsData({c1, c2, c3}));
}
}
std::map<GraphicsData, int> graphics_map;
// Insert in reverse index permuted order.
size_t x = 0;
for (BlendMode c3 : {BlendMode::kScreen, BlendMode::kMultiply}) {
for (float c2 : {fNan, fInf, fMax, 2.0f, 1.0f, fMin}) {
for (float c1 : {fNan, fInf, fMax, 2.0f, 1.0f, fMin}) {
graphics_map[{c1, c2, c3}] = x++;
}
}
}
EXPECT_EQ(72u, x);
EXPECT_EQ(72u, graphics_map.size());
// clang-format off
const int expected[72] = {
71, 35, 65, 29, 59, 23, 53, 17, 47, 11, 41, 5,
70, 34, 64, 28, 58, 22, 52, 16, 46, 10, 40, 4,
69, 33, 63, 27, 57, 21, 51, 15, 45, 9, 39, 3,
68, 32, 62, 26, 56, 20, 50, 14, 44, 8, 38, 2,
67, 31, 61, 25, 55, 19, 49, 13, 43, 7, 37, 1,
66, 30, 60, 24, 54, 18, 48, 12, 42, 6, 36, 0
};
// clang-format on
x = 0;
for (const auto& item : graphics_map) {
EXPECT_EQ(expected[x], item.second) << " for position " << x;
++x;
}
EXPECT_EQ(72u, x);
// Erase in forward index permuted order.
for (BlendMode c3 : {BlendMode::kMultiply, BlendMode::kScreen}) {
for (float c2 : {fMin, 1.0f, 2.0f, fMax, fInf, fNan}) {
for (float c1 : {fMin, 1.0f, 2.0f, fMax, fInf, fNan})
graphics_map.erase({c1, c2, c3});
}
}
EXPECT_EQ(0u, graphics_map.size());
}
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