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  26 <div class="titlepage"><div><div><h4 class="title">
  27 <a name="boost_test.utf_reference.testing_tool_ref.assertion_boost_level_no_throw"></a><a class="link" href="assertion_boost_level_no_throw.html" title="BOOST_&lt;level&gt;_NO_THROW"><code class="computeroutput"><span class="identifier">BOOST_</span><span class="special">&lt;</span><span class="identifier">level</span><span class="special">&gt;</span><span class="identifier">_NO_THROW</span></code></a>
  28 </h4></div></div></div>
  29 <pre class="programlisting"><span class="identifier">BOOST_WARN_NO_THROW</span><span class="special">(</span><span class="identifier">expression</span><span class="special">);</span>
  30 <span class="identifier">BOOST_CHECK_NO_THROW</span><span class="special">(</span><span class="identifier">expression</span><span class="special">);</span>
  31 <span class="identifier">BOOST_REQUIRE_NO_THROW</span><span class="special">(</span><span class="identifier">expression</span><span class="special">);</span>
  32 </pre>
  33 <p>
  34           These assertions validate that the execution of <code class="computeroutput"><span class="identifier">expression</span></code>
  35           does not throw any exception. To that extent, all possible exception are
  36           caught by assertion itself and no exception is propagated to the test body.
  37         </p>
  38 <div class="tip"><table border="0" summary="Tip">
  39 <tr>
  40 <td rowspan="2" align="center" valign="top" width="25"><img alt="[Tip]" src="../../../../../../../doc/src/images/tip.png"></td>
  41 <th align="left">Tip</th>
  42 </tr>
  43 <tr><td align="left" valign="top"><p>
  44             It is possible to test for complex expressions with the use of constructs
  45             such as <code class="computeroutput"><span class="keyword">do</span> <span class="special">{</span>
  46             <span class="comment">/* ... */</span><span class="special">}</span>
  47             <span class="keyword">while</span><span class="special">(</span><span class="number">0</span><span class="special">)</span></code> block.
  48           </p></td></tr>
  49 </table></div>
  50 <h6>
  51 <a name="boost_test.utf_reference.testing_tool_ref.assertion_boost_level_no_throw.h0"></a>
  52           <span class="phrase"><a name="boost_test.utf_reference.testing_tool_ref.assertion_boost_level_no_throw.example_descr"></a></span><a class="link" href="assertion_boost_level_no_throw.html#boost_test.utf_reference.testing_tool_ref.assertion_boost_level_no_throw.example_descr">Example:
  53           BOOST_&lt;level&gt;_NO_THROW usage</a>
  54         </h6>
  55 <div class="informaltable"><table class="table">
  56 <colgroup><col></colgroup>
  57 <thead><tr><th>
  58                   <p>
  59                     Code
  60                   </p>
  61                 </th></tr></thead>
  62 <tbody><tr><td>
  63 <pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="preprocessor">#define</span> <span class="identifier">BOOST_TEST_MODULE</span> <span class="identifier">example</span>
  64 <span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">test</span><span class="special">/</span><span class="identifier">included</span><span class="special">/</span><span class="identifier">unit_test</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
  65
  66 <span class="keyword">class</span> <span class="identifier">my_exception</span><span class="special">{};</span>
  67
  68 <span class="keyword">void</span> <span class="identifier">some_func</span><span class="special">(</span> <span class="keyword">int</span> <span class="identifier">i</span> <span class="special">)</span> <span class="special">{</span> <span class="keyword">if</span><span class="special">(</span> <span class="identifier">i</span><span class="special">&lt;</span><span class="number">0</span> <span class="special">)</span> <span class="keyword">throw</span> <span class="identifier">my_exception</span><span class="special">();</span> <span class="special">}</span>
  69
  70 <span class="identifier">BOOST_AUTO_TEST_CASE</span><span class="special">(</span> <span class="identifier">test</span> <span class="special">)</span>
  71 <span class="special">{</span>
  72     <span class="identifier">BOOST_CHECK_NO_THROW</span><span class="special">(</span> <span class="identifier">some_func</span><span class="special">(-</span><span class="number">1</span><span class="special">)</span> <span class="special">);</span>
  73     <span class="identifier">BOOST_CHECK_NO_THROW</span><span class="special">(</span>
  74       <span class="keyword">do</span> <span class="special">{</span>
  75         <span class="keyword">int</span> <span class="identifier">i</span><span class="special">(-</span><span class="number">2</span><span class="special">);</span>
  76         <span class="identifier">some_func</span><span class="special">(</span><span class="identifier">i</span><span class="special">);</span>
  77       <span class="special">}</span> <span class="keyword">while</span><span class="special">(</span><span class="number">0</span><span class="special">)</span>
  78     <span class="special">);</span>
  79 <span class="special">}</span>
  80 </pre>
  81                 </td></tr></tbody>
  82 </table></div>
  83 <div class="informaltable"><table class="table">
  84 <colgroup><col></colgroup>
  85 <thead><tr><th>
  86                   <p>
  87                     Output
  88                   </p>
  89                 </th></tr></thead>
  90 <tbody><tr><td>
  91 <pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="special">&gt;</span> <span class="identifier">example</span>
  92 <span class="identifier">Running</span> <span class="number">1</span> <span class="identifier">test</span> <span class="keyword">case</span><span class="special">...</span>
  93 <span class="special">../</span><span class="identifier">doc</span><span class="special">/</span><span class="identifier">examples</span><span class="special">/</span><span class="identifier">exception_nothrow</span><span class="special">.</span><span class="identifier">run</span><span class="special">-</span><span class="identifier">fail</span><span class="special">.</span><span class="identifier">cpp</span><span class="special">:</span><span class="number">18</span><span class="special">:</span> <span class="identifier">error</span><span class="special">:</span> <span class="identifier">in</span> <span class="string">"test"</span><span class="special">:</span> <span class="identifier">exception</span> <span class="identifier">thrown</span> <span class="identifier">by</span> <span class="identifier">some_func</span><span class="special">(-</span><span class="number">1</span><span class="special">)</span>
  94 <span class="special">../</span><span class="identifier">doc</span><span class="special">/</span><span class="identifier">examples</span><span class="special">/</span><span class="identifier">exception_nothrow</span><span class="special">.</span><span class="identifier">run</span><span class="special">-</span><span class="identifier">fail</span><span class="special">.</span><span class="identifier">cpp</span><span class="special">:</span><span class="number">24</span><span class="special">:</span> <span class="identifier">error</span><span class="special">:</span> <span class="identifier">in</span> <span class="string">"test"</span><span class="special">:</span> <span class="identifier">exception</span> <span class="identifier">thrown</span> <span class="identifier">by</span> <span class="keyword">do</span> <span class="special">{</span> <span class="keyword">int</span> <span class="identifier">i</span><span class="special">(-</span><span class="number">2</span><span class="special">);</span> <span class="identifier">some_func</span><span class="special">(</span><span class="identifier">i</span><span class="special">);</span>
  95  <span class="special">}</span> <span class="keyword">while</span><span class="special">(</span><span class="number">0</span><span class="special">)</span>
  96
  97 <span class="special">***</span> <span class="number">2</span> <span class="identifier">failures</span> <span class="identifier">are</span> <span class="identifier">detected</span> <span class="identifier">in</span> <span class="identifier">the</span> <span class="identifier">test</span> <span class="identifier">module</span> <span class="string">"example"</span>
  98 </pre>
  99                 </td></tr></tbody>
 100 </table></div>
 101 <p>
 102           See also:
 103         </p>
 104 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
 105 <li class="listitem">
 106               <a class="link" href="assertion_boost_level_throw.html" title="BOOST_&lt;level&gt;_THROW"><code class="computeroutput"><span class="identifier">BOOST_</span><span class="special">&lt;</span><span class="identifier">level</span><span class="special">&gt;</span><span class="identifier">_THROW</span></code></a>
 107             </li>
 108 <li class="listitem">
 109               <a class="link" href="../../testing_tools/exception_correctness.html" title="Exception correctness">Exception
 110               correctness</a> section
 111             </li>
 112 </ul></div>
 113 </div>
 114 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 115 <td align="left"></td>
 116 <td align="right"><div class="copyright-footer">Copyright &#169; 2001-2019 Boost.Test
 117       contributors<p>
 118         Distributed under the Boost Software License, Version 1.0. (See accompanying
 119         file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
 120       </p>
 121 </div></td>
 122 </tr></table>
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