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83 lines
2.6 KiB
83 lines
2.6 KiB
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "minikin/SparseBitSet.h"
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#include <random>
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#include <gtest/gtest.h>
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#include "BufferUtils.h"
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namespace minikin {
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TEST(SparseBitSetTest, randomTest) {
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const uint32_t kTestRangeNum = 4096;
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std::mt19937 mt; // Fix seeds to be able to reproduce the result.
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std::uniform_int_distribution<uint16_t> distribution(1, 512);
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std::vector<uint32_t> range{distribution(mt)};
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for (size_t i = 1; i < kTestRangeNum * 2; ++i) {
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range.push_back((range.back() - 1) + distribution(mt));
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}
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SparseBitSet bitset(range.data(), range.size() / 2);
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uint32_t ch = 0;
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for (size_t i = 0; i < range.size() / 2; ++i) {
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uint32_t start = range[i * 2];
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uint32_t end = range[i * 2 + 1];
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for (; ch < start; ch++) {
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ASSERT_FALSE(bitset.get(ch)) << std::hex << ch;
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}
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for (; ch < end; ch++) {
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ASSERT_TRUE(bitset.get(ch)) << std::hex << ch;
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}
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}
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for (; ch < 0x1FFFFFF; ++ch) {
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ASSERT_FALSE(bitset.get(ch)) << std::hex << ch;
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}
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}
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TEST(SparseBitSetTest, bufferTest) {
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std::vector<uint32_t> range({10, 20});
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SparseBitSet originalBitset(range.data(), range.size() / 2);
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std::vector<uint8_t> buffer = writeToBuffer(originalBitset);
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BufferReader reader(buffer.data());
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SparseBitSet bitset(&reader);
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for (size_t i = 0; i < 10; ++i) ASSERT_FALSE(bitset.get(i)) << i;
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for (size_t i = 10; i < 20; ++i) ASSERT_TRUE(bitset.get(i)) << i;
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for (size_t i = 20; i < 30; ++i) ASSERT_FALSE(bitset.get(i)) << i;
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std::vector<uint8_t> newBuffer = writeToBuffer(bitset);
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ASSERT_EQ(buffer, newBuffer);
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}
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TEST(SparseBitSetTest, emptyBitSetBufferTest) {
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SparseBitSet empty;
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std::vector<uint8_t> buffer = writeToBuffer(empty);
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BufferReader reader(buffer.data());
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SparseBitSet bitset(&reader);
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ASSERT_FALSE(bitset.get(0));
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std::vector<uint8_t> newBuffer = writeToBuffer(bitset);
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ASSERT_EQ(buffer, newBuffer);
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}
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} // namespace minikin
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