1  // Copyright (c) 2021-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  #include <minisketch.h>
 6  #include <node/minisketchwrapper.h>
 7  #include <random.h>
 8  #include <test/util/common.h>
 9  #include <test/util/random.h>
10  #include <test/util/setup_common.h>
11  
12  #include <boost/test/unit_test.hpp>
13  
14  #include <utility>
15  
16  using node::MakeMinisketch32;
17  
18  BOOST_FIXTURE_TEST_SUITE(minisketch_tests, BasicTestingSetup)
19  
20  BOOST_AUTO_TEST_CASE(minisketch_test)
21  {
22      for (int i = 0; i < 100; ++i) {
23          uint32_t errors = 0 + m_rng.randrange(11);
24          uint32_t start_a = 1 + m_rng.randrange(1000000000);
25          uint32_t a_not_b = m_rng.randrange(errors + 1);
26          uint32_t b_not_a = errors - a_not_b;
27          uint32_t both = m_rng.randrange(10000);
28          uint32_t end_a = start_a + a_not_b + both;
29          uint32_t start_b = start_a + a_not_b;
30          uint32_t end_b = start_b + both + b_not_a;
31  
32          Minisketch sketch_a = MakeMinisketch32(10);
33          for (uint32_t a = start_a; a < end_a; ++a) sketch_a.Add(a);
34          Minisketch sketch_b = MakeMinisketch32(10);
35          for (uint32_t b = start_b; b < end_b; ++b) sketch_b.Add(b);
36  
37          Minisketch sketch_ar = MakeMinisketch32(10);
38          Minisketch sketch_br = MakeMinisketch32(10);
39          sketch_ar.Deserialize(sketch_a.Serialize());
40          sketch_br.Deserialize(sketch_b.Serialize());
41  
42          Minisketch sketch_c = std::move(sketch_ar);
43          sketch_c.Merge(sketch_br);
44          auto dec = sketch_c.Decode(errors);
45          BOOST_REQUIRE(dec.has_value());
46          auto sols = std::move(*dec);
47          std::sort(sols.begin(), sols.end());
48          for (uint32_t i = 0; i < a_not_b; ++i) BOOST_CHECK_EQUAL(sols[i], start_a + i);
49          for (uint32_t i = 0; i < b_not_a; ++i) BOOST_CHECK_EQUAL(sols[i + a_not_b], start_b + both + i);
50      }
51  }
52  
53  BOOST_AUTO_TEST_SUITE_END()