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    <H1 CLASS="title">Filter Testing Functions</H1>
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<DL class="page-index">
  <DT><A href="#overview">Overview</A></DT>
  <DT><A href="#headers">Headers</A></DT>
  <DT><A href="#reference">Reference</A>
    <DL>
      <DT><A href="#test_input">Function template <CODE>test_input_filter</CODE></A></DT>
      <DT><A href="#test_output">Function template <CODE>test_output_filter</CODE></A></DT>
      <DT><A href="#test_pair">Function template <CODE>test_filter_pair</CODE></A></DT>
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<A NAME="overview"></A>
<H2>Overview</H2>

<P>
    The header <A CLASS="header" HREF="../../../../boost/iostreams/filter/test.hpp"><CODE>&lt;boost/iostreams/filter/test.hpp&gt;</CODE></A> provides several overloaded function templates for verifying that a filter works as expected when used in conjunction with non-<A HREF='../concepts/blocking.html'>Blocking</A> <A HREF='../concepts/source.html'>Sources</A> and <A HREF='../concepts/sink.html'>Sinks</A>.
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<A NAME="headers"></A>
<H2>Headers</H2>

<DL class="page-index">
  <DT><A CLASS="header" HREF="../../../../boost/iostreams/filter/test.hpp"><CODE>&lt;boost/iostreams/filter/test.hpp&gt;</CODE></A></DT>
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<A NAME="reference"></A>
<H2>Reference</H2>

<A NAME="test_input"></A>
<H3>Function template <CODE>test_input_filter</CODE></H3>

<H4>Description</H4>

<P>Verifies that the given <A HREF='../concepts/input_filter.html'>InputFilter</A> yields the given output when passed the given input.</P>

<H4>Synopsis</H4>

<PRE CLASS="broken_ie"><SPAN CLASS="keyword">namespace</SPAN> boost { <SPAN CLASS="keyword">namespace</SPAN> iostreams {

<SPAN CLASS='keyword'>template</SPAN>&lt;<SPAN CLASS='keyword'>typename</SPAN> InputFilter&gt;
<SPAN CLASS='keyword'>bool</SPAN> test_input_filter( InputFilter filter, 
                        <SPAN CLASS='keyword'>const</SPAN> std::string&amp; input,
                        <SPAN CLASS='keyword'>const</SPAN> std::string&amp; output );

<SPAN CLASS='keyword'>template</SPAN>&lt;<SPAN CLASS='keyword'>typename</SPAN> InputFilter, <SPAN CLASS='keyword'>typename</SPAN> Source1, <SPAN CLASS='keyword'>typename</SPAN> Source2&gt;
<SPAN CLASS='keyword'>bool</SPAN> test_input_filter( InputFilter filter, 
                        <SPAN CLASS='keyword'>const</SPAN> Source1&amp; input,
                        <SPAN CLASS='keyword'>const</SPAN> Source2&amp; output );

} } <SPAN CLASS='comment'>// End namespace boost::io</SPAN></PRE>


<A NAME="test_output"></A>
<H3>Function template <CODE>test_output_filter</CODE></H3>

<H4>Description</H4>

<P>Verifies that the given <A HREF='../concepts/output_filter.html'>OutputFilter</A> yields the given output when passed the given input.</P>

<H4>Synopsis</H4>

<PRE CLASS="broken_ie"><SPAN CLASS="keyword">namespace</SPAN> boost { <SPAN CLASS="keyword">namespace</SPAN> iostreams {

<SPAN CLASS='keyword'>template</SPAN>&lt;<SPAN CLASS='keyword'>typename</SPAN> OutputFilter&gt;
<SPAN CLASS='keyword'>bool</SPAN> test_output_filter( OutputFilter filter, 
                         <SPAN CLASS='keyword'>const</SPAN> std::string&amp; input,
                         <SPAN CLASS='keyword'>const</SPAN> std::string&amp; output );

<SPAN CLASS='keyword'>template</SPAN>&lt;<SPAN CLASS='keyword'>typename</SPAN> OutputFilter, <SPAN CLASS='keyword'>typename</SPAN> Source1, <SPAN CLASS='keyword'>typename</SPAN> Source2&gt;
<SPAN CLASS='keyword'>bool</SPAN> test_output_filter( OutputFilter filter, 
                         <SPAN CLASS='keyword'>const</SPAN> Source1&amp; input,
                         <SPAN CLASS='keyword'>const</SPAN> Source2&amp; output );

} } <SPAN CLASS='comment'>// End namespace boost::io</SPAN></PRE>

<A NAME="test_pair"></A>
<H3>Function template <CODE>test_filter_pair</CODE></H3>

<H4>Description</H4>

<P>Verifies that the given data is preserved when it is passed first through a given <A HREF='../concepts/output_filter.html'>OutputFilter</A> and then through a given <A HREF='../concepts/input_filter.html'>InputFilter</A>.</P>

<H4>Synopsis</H4>

<PRE CLASS="broken_ie"><SPAN CLASS="keyword">namespace</SPAN> boost { <SPAN CLASS="keyword">namespace</SPAN> iostreams {

<SPAN CLASS='keyword'>template</SPAN>&lt;<SPAN CLASS='keyword'>typename</SPAN> OutputFilter, <SPAN CLASS='keyword'>typename</SPAN> InputFilter&gt;
<SPAN CLASS='keyword'>bool</SPAN> test_filter_pair( OutputFilter first, 
                       InputFilter second,
                       <SPAN CLASS='keyword'>const</SPAN> std::string&amp; data );

<SPAN CLASS='keyword'>template</SPAN>&lt;<SPAN CLASS='keyword'>typename</SPAN> OutputFilter, <SPAN CLASS='keyword'>typename</SPAN> InputFilter, <SPAN CLASS='keyword'>typename</SPAN> Source&gt;
<SPAN CLASS='keyword'>bool</SPAN> test_filter_pair( OutputFilter first, 
                       InputFilter second, 
                       <SPAN CLASS='keyword'>const</SPAN> Source&amp; data );

} } <SPAN CLASS='comment'>// End namespace boost::io</SPAN></PRE>

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    Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at <A HREF="http://www.boost.org/LICENSE_1_0.txt">http://www.boost.org/LICENSE_1_0.txt</A>)
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