<p>In <a href="https://github.com/mlpack/mlpack/pull/747#discussion_r74709361">src/mlpack/tests/spill_tree_test.cpp</a>:</p>
<pre style='color:#555'>&gt; +
&gt; +/**
&gt; + * Simple test for the move constructor.
&gt; + */
&gt; +BOOST_AUTO_TEST_CASE(SpillTreeMoveDatasetTest)
&gt; +{
&gt; +  arma::mat dataset = arma::randu&lt;arma::mat&gt;(3, 1000);
&gt; +  typedef SPTree&lt;EuclideanDistance, EmptyStatistic, arma::mat&gt; TreeType;
&gt; +
&gt; +  TreeType tree(std::move(dataset));
&gt; +
&gt; +  BOOST_REQUIRE_EQUAL(dataset.n_elem, 0);
&gt; +  BOOST_REQUIRE_EQUAL(tree.Dataset().n_rows, 3);
&gt; +  BOOST_REQUIRE_EQUAL(tree.Dataset().n_cols, 1000);
&gt; +}
&gt; +
</pre>
<p>Should we also test the copy constructor?  You could do this:</p>

<pre><code>TreeType t = new TreeType(dataset);
TreeType t2(t);
delete t;

// Now check that everything is still valid.
</code></pre>

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