 a test please refer to <a href="/dev/test.html">this guide</a> and <a href="https://forums.fast.ai/t/improving-expanding-functional-tests/32929">this discussion</a>.</p></div></div><p>Add the <code>items</code> as a test set. Pass along <code>label</code> otherwise label them with <a href="/core.html#EmptyLabel"><code>EmptyLabel</code></a>.</p>

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