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<div class="titlepage"><div><div><h4 class="title">
<a name="boost_test.utf_reference.test_org_reference.test_org_boost_test_dataset"></a><a class="link" href="test_org_boost_test_dataset.html" title="BOOST_DATA_TEST_CASE"><code class="computeroutput"><span class="identifier">BOOST_DATA_TEST_CASE</span></code></a>
</h4></div></div></div>
<p>
          Declares and registers a data-driven test case, using a particular dataset.
        </p>
<p>
          Several forms of the macro are available.
        </p>
<pre class="programlisting"><span class="identifier">BOOST_DATA_TEST_CASE</span><span class="special">(</span><span class="identifier">test_case_name</span><span class="special">,</span> <span class="identifier">dataset</span><span class="special">)</span>
<span class="special">{</span>
  <span class="identifier">BOOST_TEST</span><span class="special">(</span><span class="identifier">sample</span> <span class="special">!=</span> <span class="number">0</span><span class="special">);</span>
<span class="special">}</span>
</pre>
<p>
          should be used for datasets with arity 1. In the body of the test case,
          the samples of the dataset are taken by the variable <code class="computeroutput"><span class="identifier">sample</span></code>.
        </p>
<pre class="programlisting"><span class="identifier">BOOST_DATA_TEST_CASE</span><span class="special">(</span><span class="identifier">test_case_name</span><span class="special">,</span> <span class="identifier">dataset</span><span class="special">,</span> <span class="identifier">var1</span><span class="special">)</span>
<span class="special">{</span>
  <span class="identifier">BOOST_TEST</span><span class="special">(</span><span class="identifier">var1</span> <span class="special">!=</span> <span class="number">0</span><span class="special">);</span>
<span class="special">}</span>
</pre>
<p>
          same as the first form, but the samples are taken by the variable <code class="computeroutput"><span class="identifier">var1</span></code> instead of the variable <code class="computeroutput"><span class="identifier">sample</span></code>
        </p>
<pre class="programlisting"><span class="identifier">BOOST_DATA_TEST_CASE</span><span class="special">(</span><span class="identifier">test_case_name</span><span class="special">,</span> <span class="identifier">dataset</span><span class="special">,</span> <span class="identifier">var1</span><span class="special">,</span> <span class="identifier">var2</span><span class="special">...,</span> <span class="identifier">varN</span><span class="special">)</span>
<span class="special">{</span>
  <span class="identifier">BOOST_TEST</span><span class="special">(</span><span class="identifier">var1</span> <span class="special">!=</span> <span class="number">0</span><span class="special">);</span>
  <span class="comment">//...</span>
  <span class="identifier">BOOST_TEST</span><span class="special">(</span><span class="identifier">varN</span> <span class="special">!=</span> <span class="number">0</span><span class="special">);</span>
<span class="special">}</span>
</pre>
<p>
          same as the second form, but for dataset of arity <code class="computeroutput"><span class="identifier">N</span></code>.
        </p>
<p>
          For compilers <span class="bold"><strong>lacking the variadic template</strong></span>
          support, the maximal arity (the maximal value of <code class="computeroutput"><span class="identifier">N</span></code>)
          is controlled by the macro <code class="computeroutput"><span class="identifier">BOOST_TEST_DATASET_MAX_ARITY</span></code>
          which is set to <code class="computeroutput"><span class="number">10</span></code> by default.
          If you need a greater value, define <code class="computeroutput"><span class="identifier">BOOST_TEST_DATASET_MAX_ARITY</span></code>
          to the desired value <span class="bold"><strong>before</strong></span> including
          the <span class="emphasis"><em>Unit Test Framework</em></span> headers.
        </p>
<p>
          See <a class="link" href="../../tests_organization/test_cases/test_case_generation/datasets_auto_registration.html" title="Declaring and registering test cases with datasets">here</a>
          for more details.
        </p>
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