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

   1 //
   2 // Test 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 void test_vector()
  17 {
  18     {
  19         std::vector<int> x, y;
  20         x.push_back( 1 ); x.push_back( 2 ); x.push_back( 3 ); x.push_back( 4 );
  21         y.push_back( 1 ); y.push_back( 2 ); y.push_back( 3 ); y.push_back( 4 );
  22         BOOST_TEST_ALL_WITH( x.begin(), x.end(), y.begin(), y.end(), std::equal_to<int>() );
  23     }
  24
  25     {
  26         std::vector<int> x, y;
  27         x.push_back( 1 ); x.push_back( 2 ); x.push_back( 3 ); x.push_back( 4 );
  28         y.push_back( 2 ); y.push_back( 3 ); y.push_back( 4 ); y.push_back( 5 );
  29         BOOST_TEST_ALL_WITH( x.begin(), x.end(), y.begin(), y.end(), std::not_equal_to<int>() );
  30     }
  31
  32     {
  33         std::vector<int> x, y;
  34         x.push_back( 1 ); x.push_back( 2 ); x.push_back( 3 ); x.push_back( 4 );
  35         y.push_back( 2 ); y.push_back( 3 ); y.push_back( 4 ); y.push_back( 5 );
  36         BOOST_TEST_ALL_WITH( x.begin(), x.end(), y.begin(), y.end(), std::less<int>() );
  37     }
  38 }
  39
  40 template <typename T>
  41 struct with_tolerance
  42 {
  43     with_tolerance(T tolerance) : tolerance(tolerance) {}
  44     bool operator()(T lhs, T rhs)
  45     {
  46         return (std::abs(lhs - rhs) <= tolerance);
  47     }
  48
  49 private:
  50     T tolerance;
  51 };
  52
  53 void test_tolerance_predicate()
  54 {
  55     {
  56         std::vector<double> x, y;
  57         x.push_back( 1.0 ); x.push_back( 2.0 ); x.push_back( 3.0 ); x.push_back( 4.0 );
  58         y.push_back( 1.0 ); y.push_back( 2.0 ); y.push_back( 3.0 ); y.push_back( 4.0 );
  59         BOOST_TEST_ALL_WITH( x.begin(), x.end(), y.begin(), y.end(), with_tolerance<double>(1e-5) );
  60     }
  61
  62     {
  63         std::vector<double> x, y;
  64         x.push_back( 1.0 ); x.push_back( 1.0 );
  65         y.push_back( 1.0 - 1e-6 ); y.push_back( 1.0 + 1e-6 );
  66         BOOST_TEST_ALL_WITH( x.begin(), x.end(), y.begin(), y.end(), with_tolerance<double>(1e-5) );
  67     }
  68 }
  69
  70 int main()
  71 {
  72     test_vector();
  73     test_tolerance_predicate();
  74
  75     return boost::report_errors();
  76 }