1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "minikin/SparseBitSet.h" 18 19 #include <random> 20 21 #include <gtest/gtest.h> 22 23 namespace minikin { 24 25 TEST(SparseBitSetTest, randomTest) { 26 const uint32_t kTestRangeNum = 4096; 27 28 std::mt19937 mt; // Fix seeds to be able to reproduce the result. 29 std::uniform_int_distribution<uint16_t> distribution(1, 512); 30 31 std::vector<uint32_t> range{distribution(mt)}; 32 for (size_t i = 1; i < kTestRangeNum * 2; ++i) { 33 range.push_back((range.back() - 1) + distribution(mt)); 34 } 35 36 SparseBitSet bitset(range.data(), range.size() / 2); 37 38 uint32_t ch = 0; 39 for (size_t i = 0; i < range.size() / 2; ++i) { 40 uint32_t start = range[i * 2]; 41 uint32_t end = range[i * 2 + 1]; 42 43 for (; ch < start; ch++) { 44 ASSERT_FALSE(bitset.get(ch)) << std::hex << ch; 45 } 46 for (; ch < end; ch++) { 47 ASSERT_TRUE(bitset.get(ch)) << std::hex << ch; 48 } 49 } 50 for (; ch < 0x1FFFFFF; ++ch) { 51 ASSERT_FALSE(bitset.get(ch)) << std::hex << ch; 52 } 53 } 54 55 } // namespace minikin 56
