1  // Copyright (c) 2024-present The Bitcoin Core developers
 2  // Distributed under the MIT software license, see the accompanying
 3  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 4  //
 5  
 6  #include <node/timeoffsets.h>
 7  #include <node/warnings.h>
 8  #include <test/util/setup_common.h>
 9  
10  #include <boost/test/unit_test.hpp>
11  
12  #include <chrono>
13  #include <vector>
14  
15  using namespace std::chrono_literals;
16  
17  static void AddMulti(TimeOffsets& offsets, const std::vector<std::chrono::seconds>& to_add)
18  {
19      for (auto offset : to_add) {
20          offsets.Add(offset);
21      }
22  }
23  
24  BOOST_FIXTURE_TEST_SUITE(timeoffsets_tests, BasicTestingSetup)
25  
26  BOOST_AUTO_TEST_CASE(timeoffsets)
27  {
28      node::Warnings warnings{};
29      TimeOffsets offsets{warnings};
30      BOOST_CHECK(offsets.Median() == 0s);
31  
32      AddMulti(offsets, {{0s, -1s, -2s, -3s}});
33      // median should be zero for < 5 offsets
34      BOOST_CHECK(offsets.Median() == 0s);
35  
36      offsets.Add(-4s);
37      // we now have 5 offsets: [-4, -3, -2, -1, 0]
38      BOOST_CHECK(offsets.Median() == -2s);
39  
40      AddMulti(offsets, {4, 5s});
41      // we now have 9 offsets: [-4, -3, -2, -1, 0, 5, 5, 5, 5]
42      BOOST_CHECK(offsets.Median() == 0s);
43  
44      AddMulti(offsets, {41, 10s});
45      // the TimeOffsets is now at capacity with 50 offsets, oldest offsets is discarded for any additional offset
46      BOOST_CHECK(offsets.Median() == 10s);
47  
48      AddMulti(offsets, {25, 15s});
49      // we now have 25 offsets of 10s followed by 25 offsets of 15s
50      BOOST_CHECK(offsets.Median() == 15s);
51  }
52  
53  static bool IsWarningRaised(const std::vector<std::chrono::seconds>& check_offsets)
54  {
55      node::Warnings warnings{};
56      TimeOffsets offsets{warnings};
57      AddMulti(offsets, check_offsets);
58      return offsets.WarnIfOutOfSync();
59  }
60  
61  
62  BOOST_AUTO_TEST_CASE(timeoffsets_warning)
63  {
64      BOOST_CHECK(IsWarningRaised({{-60min, -40min, -30min, 0min, 10min}}));
65      BOOST_CHECK(IsWarningRaised({5, 11min}));
66  
67      BOOST_CHECK(!IsWarningRaised({4, 60min}));
68      BOOST_CHECK(!IsWarningRaised({100, 3min}));
69  }
70  
71  
72  BOOST_AUTO_TEST_SUITE_END()