| 1 | // |
|---|---|
| 2 | // Test for BOOST_TEST_WITH |
| 3 | // |
| 4 | // Copyright (c) 2020 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 <boost/core/lightweight_test.hpp> |
| 12 | #include <cmath> |
| 13 | |
| 14 | template <typename T> |
| 15 | struct with_tolerance |
| 16 | { |
| 17 | with_tolerance(T tolerance) : tolerance(tolerance) {} |
| 18 | bool operator()(T lhs, T rhs) const |
| 19 | { |
| 20 | return (std::abs(lhs - rhs) <= tolerance); |
| 21 | } |
| 22 | |
| 23 | private: |
| 24 | T tolerance; |
| 25 | }; |
| 26 | |
| 27 | void test_tolerance_predicate() |
| 28 | { |
| 29 | BOOST_TEST_WITH( 1.0, 1.0, with_tolerance<double>(1e-5) ); |
| 30 | BOOST_TEST_WITH( 1.0, 1.0 - 1e-6, with_tolerance<double>(1e-5) ); |
| 31 | BOOST_TEST_WITH( 1.0, 1.0 + 1e-6, with_tolerance<double>(1e-5) ); |
| 32 | } |
| 33 | |
| 34 | int main() |
| 35 | { |
| 36 | test_tolerance_predicate(); |
| 37 | |
| 38 | return boost::report_errors(); |
| 39 | } |
| 40 |