ceph/src/boost/libs/proto/test/display_expr.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // display_expr.cpp
   3 //
   4 //  Copyright 2010 Eric Niebler. Distributed under the Boost
   5 //  Software License, Version 1.0. (See accompanying file
   6 //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   7
   8 #include <sstream>
   9 #include <boost/proto/proto.hpp>
  10 #include <boost/test/unit_test.hpp>
  11
  12 namespace mpl = boost::mpl;
  13 namespace proto = boost::proto;
  14 using proto::_;
  15
  16 struct A {};
  17 struct B : A {};
  18 std::ostream& operator<<( std::ostream& out, const A& ) { return out << "this is A!"; }
  19
  20 struct C {};
  21
  22 void test_display_expr()
  23 {
  24     // https://svn.boost.org/trac/boost/ticket/4910
  25     proto::terminal<int>::type i = {0};
  26
  27     {
  28         std::stringstream sout;
  29         proto::display_expr(i + A(), sout);
  30         BOOST_CHECK_EQUAL(sout.str(), std::string(
  31           "plus(\n"
  32           "    terminal(0)\n"
  33           "  , terminal(this is A!)\n"
  34           ")\n"));
  35     }
  36
  37     {
  38         std::stringstream sout;
  39         proto::display_expr(i + B(), sout);
  40         BOOST_CHECK_EQUAL(sout.str(), std::string(
  41           "plus(\n"
  42           "    terminal(0)\n"
  43           "  , terminal(this is A!)\n"
  44           ")\n"));
  45     }
  46
  47     {
  48         std::stringstream sout;
  49         char const * Cname = BOOST_SP_TYPEID(C).name();
  50         proto::display_expr(i + C(), sout);
  51         BOOST_CHECK_EQUAL(sout.str(), std::string(
  52           "plus(\n"
  53           "    terminal(0)\n"
  54           "  , terminal(") + Cname + std::string(")\n"
  55           ")\n"));
  56     }
  57 }
  58
  59 using namespace boost::unit_test;
  60 ///////////////////////////////////////////////////////////////////////////////
  61 // init_unit_test_suite
  62 //
  63 test_suite* init_unit_test_suite( int argc, char* argv[] )
  64 {
  65     test_suite *test = BOOST_TEST_SUITE("test display_expr() function");
  66     test->add(BOOST_TEST_CASE(&test_display_expr));
  67     return test;
  68 }