ceph/src/boost/libs/core/test/lightweight_test_all_with_fail.cpp

   1 //
   2 // Negative est for BOOST_TEST_ALL_WITH
   3 //
   4 // Copyright (c) 2017 Bjorn Reese
   5 //
   6 // Distributed under the Boost Software License, Version 1.0.
   7 // See accompanying file LICENSE_1_0.txt or copy at
   8 // http://www.boost.org/LICENSE_1_0.txt
   9 //
  10
  11 #include <cmath>
  12 #include <functional>
  13 #include <vector>
  14 #include <boost/core/lightweight_test.hpp>
  15
  16 int fail_vector()
  17 {
  18     int test_cases = 0;
  19
  20     {
  21         std::vector<int> x, y;
  22         x.push_back( 1 );
  23         BOOST_TEST_ALL_WITH( x.begin(), x.end(), y.begin(), y.end(), std::equal_to<int>() );
  24         ++test_cases;
  25     }
  26
  27     {
  28         std::vector<int> x, y;
  29         y.push_back( 1 );
  30         BOOST_TEST_ALL_WITH( x.begin(), x.end(), y.begin(), y.end(), std::equal_to<int>() );
  31         ++test_cases;
  32     }
  33
  34     {
  35         std::vector<int> x, y;
  36         x.push_back( 1 ); x.push_back( 2 ); x.push_back( 3 ); x.push_back( 4 );
  37         y.push_back( 1 ); y.push_back( 2 ); y.push_back( 3 );
  38         BOOST_TEST_ALL_WITH( x.begin(), x.end(), y.begin(), y.end(), std::equal_to<int>() );
  39         ++test_cases;
  40     }
  41
  42     {
  43         std::vector<int> x, y;
  44         x.push_back( 1 ); x.push_back( 2 ); x.push_back( 3 );
  45         y.push_back( 1 ); y.push_back( 2 ); y.push_back( 3 ); y.push_back( 4 );
  46         BOOST_TEST_ALL_WITH( x.begin(), x.end(), y.begin(), y.end(), std::equal_to<int>() );
  47         ++test_cases;
  48     }
  49
  50     {
  51         std::vector<int> x, y;
  52         x.push_back( 1 ); x.push_back( 2 ); x.push_back( 3 ); x.push_back( 4 );
  53         y.push_back( 1 ); y.push_back( 3 ); y.push_back( 2 ); y.push_back( 4 );
  54         BOOST_TEST_ALL_WITH( x.begin(), x.end(), y.begin(), y.end(), std::equal_to<int>() );
  55         ++test_cases;
  56     }
  57
  58     {
  59         std::vector<int> x, y;
  60         x.push_back( 1 ); x.push_back( 2 ); x.push_back( 3 ); x.push_back( 4 );
  61         y.push_back( 1 ); y.push_back( 3 ); y.push_back( 2 ); y.push_back( 4 );
  62         BOOST_TEST_ALL_WITH( x.begin(), x.end(), y.begin(), y.end(), std::less<int>() );
  63         ++test_cases;
  64     }
  65
  66     return test_cases;
  67 }
  68
  69 template <typename T>
  70 struct with_tolerance
  71 {
  72     with_tolerance(T tolerance) : tolerance(tolerance) {}
  73     bool operator()(T lhs, T rhs)
  74     {
  75         return (std::abs(lhs - rhs) <= tolerance);
  76     }
  77
  78 private:
  79     T tolerance;
  80 };
  81
  82 int fail_tolerance_predicate()
  83 {
  84     int test_cases = 0;
  85
  86     {
  87         std::vector<double> x, y;
  88         x.push_back( 1.0 ); x.push_back( 1.0 );
  89         y.push_back( 1.0 - 1e-4 ); y.push_back( 1.0 + 1e-4 );
  90         BOOST_TEST_ALL_WITH( x.begin(), x.end(), y.begin(), y.end(), with_tolerance<double>(1e-5) );
  91         ++test_cases;
  92     }
  93
  94     return test_cases;
  95 }
  96
  97 int main()
  98 {
  99     int test_cases = 0;
 100
 101     test_cases += fail_vector();
 102     test_cases += fail_tolerance_predicate();
 103
 104     return boost::report_errors() == test_cases;
 105 }