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 {};
operator <<(std::ostream & out,const A &)18 std::ostream& operator<<( std::ostream& out, const A& ) { return out << "this is A!"; }
19
20 struct C {};
21
test_display_expr()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 //
init_unit_test_suite(int argc,char * argv[])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 }
69