82 lines
2.4 KiB
C++
82 lines
2.4 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. 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,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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#include <gtest/gtest.h>
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#include "util/arena.h"
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#include "util/random.h"
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namespace doris {
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class ArenaTest : public testing::Test { };
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TEST_F(ArenaTest, Empty) {
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Arena arena;
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}
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TEST_F(ArenaTest, Simple) {
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std::vector<std::pair<size_t, char*> > allocated;
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Arena arena;
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const int N = 100000;
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size_t bytes = 0;
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Random rnd(301);
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for (int i = 0; i < N; i++) {
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size_t s;
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if (i % (N / 10) == 0) {
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s = i;
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} else {
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s = rnd.OneIn(4000) ? rnd.Uniform(6000) :
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(rnd.OneIn(10) ? rnd.Uniform(100) : rnd.Uniform(20));
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}
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if (s == 0) {
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// Our arena disallows size 0 allocations.
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s = 1;
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}
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char* r;
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if (rnd.OneIn(10)) {
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r = arena.AllocateAligned(s);
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} else {
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r = arena.Allocate(s);
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}
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for (size_t b = 0; b < s; b++) {
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// Fill the "i"th allocation with a known bit pattern
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r[b] = i % 256;
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}
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bytes += s;
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allocated.push_back(std::make_pair(s, r));
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ASSERT_GE(arena.MemoryUsage(), bytes);
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if (i > N / 10) {
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ASSERT_LE(arena.MemoryUsage(), bytes * 1.10);
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}
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}
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for (size_t i = 0; i < allocated.size(); i++) {
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size_t num_bytes = allocated[i].first;
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const char* p = allocated[i].second;
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for (size_t b = 0; b < num_bytes; b++) {
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// Check the "i"th allocation for the known bit pattern
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ASSERT_EQ(int(p[b]) & 0xff, i % 256);
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}
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}
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}
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} // namespace doris
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int main(int argc, char** argv) {
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::testing::InitGoogleTest(&argc, argv);
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return RUN_ALL_TESTS();
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}
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