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title:
  - value: "Assertions aren't just for tests"
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  - value: '2024-05-08T00:00:00+00:00'
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  - value: |
      <p>If you've written or seen automated tests in PHP, you'll have seen lines like this:</p>

      <pre><code class="php">self::assertTrue(FALSE);
      </code></pre>

      <p>But, did you know assertions can be used outside of tests.</p>

      <p>PHP has an <code>assert()</code> function that can be used anywhere.</p>

      <p>For example, if I had this code:</p>

      <pre><code class="php">$node = Node::load(1);

      assert($node instanceof NodeInterface);
      assert($node-&gt;bundle() === 'page');
      </code></pre>

      <p>I know <code>$node</code> is a node with the correct bundle type and I can continue.</p>

      <p>I've made my assumptions explicit.</p>

      <p>If <code>$node</code> is not the correct type or returns an unexpected bundle, the assertion will fail and an Exception will be thrown.</p>

      <p>I think this is better than assuming or hoping the values are as you expect, and it also makes the intent of the code much easier to see and understand.</p>

      <p>If you haven't tried <code>assert()</code> before, give it a try.</p>

              
    format: full_html
    processed: |
      <p>If you've written or seen automated tests in PHP, you'll have seen lines like this:</p>

      <pre><code class="php">self::assertTrue(FALSE);
      </code></pre>

      <p>But, did you know assertions can be used outside of tests.</p>

      <p>PHP has an <code>assert()</code> function that can be used anywhere.</p>

      <p>For example, if I had this code:</p>

      <pre><code class="php">$node = Node::load(1);

      assert($node instanceof NodeInterface);
      assert($node-&gt;bundle() === 'page');
      </code></pre>

      <p>I know <code>$node</code> is a node with the correct bundle type and I can continue.</p>

      <p>I've made my assumptions explicit.</p>

      <p>If <code>$node</code> is not the correct type or returns an unexpected bundle, the assertion will fail and an Exception will be thrown.</p>

      <p>I think this is better than assuming or hoping the values are as you expect, and it also makes the intent of the code much easier to see and understand.</p>

      <p>If you haven't tried <code>assert()</code> before, give it a try.</p>

              
    summary: null
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