<HTML> <HEAD> <TITLE>The Test Tools</TITLE> <LINK rel="stylesheet" type="text/css" href="../../../style/btl.css" media="screen"> <LINK rel="stylesheet" type="text/css" href="../../../style/btl-print.css" media="print"> <META http-equiv="Content-Language" content="en-us"> <META http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <STYLE type="text/css"> H4 { margin: 0px; } </STYLE> </HEAD> <BODY> <DIV class="body"> <H3>BOOST_MESSAGE( message )</H3> <P class="first-line-indented">This tool is used to log the message in the test output stream. The message is logged as it is without any modifications.</P> <P class="first-line-indented">The only tool's parameter is a message to log. The message argument can be of any type and can be a result of concatenations using the operator <<().</P> <H4>Example: test.cpp</H4> <PRE class="code"><SPAN class="reserv-word">struct</SPAN> A { <SPAN class="reserv-word">friend</SPAN> <SPAN class="cpp-type">std::ostream</SPAN>& <SPAN class=keyword>operator</SPAN><<( <SPAN class="cpp-type">std::ostream</SPAN>& str, A <SPAN class="reserv-word">const</SPAN>& a ) { str << <SPAN class="literal">"struct A"</SPAN>; <SPAN class="reserv-word">return</SPAN> str; } }; <SPAN class="cpp-type">int</SPAN> test_main( <SPAN class="cpp-type">int</SPAN>, <SPAN class="cpp-type">char</SPAN>* [] ) { BOOST_MESSAGE( <SPAN class="literal">"Starting test"</SPAN> ); <SPAN class="cpp-type">int</SPAN> i = <SPAN class="literal">2</SPAN>; BOOST_MESSAGE( <SPAN class="literal">"i="</SPAN> << i ); BOOST_MESSAGE( <SPAN class="literal">"still testing..."</SPAN> ); <SPAN class="reserv-word">struct</SPAN> A a; BOOST_MESSAGE( a << <SPAN class="literal">'.'</SPAN> ); <SPAN class="reserv-word">return</SPAN> <SPAN class="literal">0</SPAN>; }</PRE> <H4>Output:</H4> <P class="test-output">Starting test<BR> i=2<BR> still testing...<BR> struct A.</P> <DIV class="see_also"> <H4>See Also</H4> <P class="see-also-content"><A href="BOOST_CHECK_MESSAGE.html" target="descr">BOOST_CHECK_MESSAGE</A></P> </DIV> </DIV> </BODY> </HTML>