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<title>precondition (decorator)</title>
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<a name="boost_test.utf_reference.test_org_reference.decorator_precondition"></a><a class="link" href="decorator_precondition.html" title="precondition (decorator)">precondition
        (decorator)</a>
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<pre class="programlisting"><span class="keyword">typedef</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">function</span><span class="special">&lt;</span><code class="computeroutput"><a class="link" href="../../../boost/test_tools/assertion_result.html" title="Class assertion_result">test_tools::assertion_result</a></code> <span class="special">(</span><span class="identifier">test_unit_id</span><span class="special">)&gt;</span> <span class="identifier">predicate_t</span><span class="special">;</span>

<span class="identifier">precondition</span><span class="special">(</span><span class="identifier">predicate_t</span> <span class="identifier">predicate</span><span class="special">);</span>
</pre>
<p>
          Associates a <span class="emphasis"><em>predicate</em></span> with a test unit that will
          determine its <a class="link" href="../../runtime_config/test_unit_filtering.html#ref_default_run_status"><span class="emphasis"><em>default
          run status</em></span></a> at run-time. See <a class="link" href="../../tests_organization/enabling.html" title="Enabling or disabling test unit execution">here</a>
          for more details.
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