ceph/src/boost/libs/test/test/writing-test-ts/fp-no-comparison-for-incomplete-types-test.cpp

   1 //  (C) Copyright Raffi Enficiaud 2019
   2 //  Distributed under the Boost Software License, Version 1.0.
   3 //  (See accompanying file LICENSE_1_0.txt or copy at
   4 //  http://www.boost.org/LICENSE_1_0.txt)
   5
   6 //  See http://www.boost.org/libs/test for the library home page.
   7
   8 #define BOOST_TEST_MAIN
   9 #include <boost/test/unit_test.hpp>
  10
  11 // https://github.com/boostorg/test/issues/209
  12 // no floating point comparison for abstract types.
  13 struct abstract
  14 {
  15     virtual ~abstract() = 0;
  16     bool operator==(const abstract &) const { return true; }
  17 };
  18
  19 std::ostream &operator<<(std::ostream &ostr, const abstract &) {
  20     return ostr << "compared";
  21 }
  22
  23 // the test is checking the compilation of the following snippet
  24 void foo(abstract &a)
  25 {
  26     // pre-C++11 compilers use a copy of the arguments in the
  27     // expansion of the BOOST_TEST macro
  28 #if !defined(BOOST_TEST_MACRO_LIMITED_SUPPORT)
  29     BOOST_TEST(a == a);
  30     BOOST_TEST_CHECK(a == a);
  31     BOOST_TEST_REQUIRE(a == a);
  32     BOOST_TEST_WARN(a == a);
  33 #endif
  34     BOOST_CHECK_EQUAL(a, a);
  35 }
  36
  37 // we need at least one test
  38 BOOST_AUTO_TEST_CASE(dummy)
  39 {
  40     const int x = 1;
  41     BOOST_TEST(x == 1);
  42 }