1/*
2 * Copyright 2015-present Facebook, Inc.
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 <folly/container/SparseByteSet.h>
18
19#include <cstdint>
20#include <limits>
21#include <random>
22#include <set>
23
24#include <folly/portability/GTest.h>
25
26using namespace std;
27using namespace folly;
28
29namespace {
30
31class SparseByteSetTest : public testing::Test {
32 protected:
33 using lims = numeric_limits<uint8_t>;
34 SparseByteSet s;
35};
36
37} // namespace
38
39TEST_F(SparseByteSetTest, empty) {
40 for (auto c = lims::min(); c < lims::max(); ++c) {
41 EXPECT_FALSE(s.contains(c));
42 }
43}
44
45TEST_F(SparseByteSetTest, each) {
46 for (auto c = lims::min(); c < lims::max(); ++c) {
47 EXPECT_TRUE(s.add(c));
48 EXPECT_TRUE(s.contains(c));
49 }
50 for (auto c = lims::min(); c < lims::max(); ++c) {
51 EXPECT_FALSE(s.add(c));
52 EXPECT_TRUE(s.contains(c));
53 }
54}
55
56TEST_F(SparseByteSetTest, each_random) {
57 mt19937 rng;
58 uniform_int_distribution<uint16_t> dist{lims::min(), lims::max()};
59 set<uint8_t> added;
60 while (added.size() <= lims::max()) {
61 auto c = uint8_t(dist(rng));
62 EXPECT_EQ(added.count(c), s.contains(c));
63 EXPECT_EQ(!added.count(c), s.add(c));
64 added.insert(c);
65 EXPECT_TRUE(added.count(c)); // sanity
66 EXPECT_TRUE(s.contains(c));
67 }
68}
69