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POTesting Wicket panels with constructor arguments
 

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    <p>I got a page with several panels that takes several parameters in their constructors. One of them being a menu that takes a list for the different buttons in the menu.</p> <p>I've tried to test it as <a href="https://stackoverflow.com/questions/6651539/how-to-unit-test-a-custom-wicket-component">components</a> but get a null pointer exception. <a href="https://stackoverflow.com/questions/2221417/wicket-testing-startpanelpanel-and-pageparameters-how-to-set-them">Using a dummy page</a> and creating the panel on the dummy page works. I'm not entirely happy with this approach since it introduces a lot of new code in my tests and more possibilities for errors. </p> <p>Is there a better way of testing panels that takes arguments in their constructor?</p> <hr> <p>Sure thing: The code that gives an null pointer error:</p> <pre><code>public void testVisitPanel(){ VisitPanel v = new VisitPanel("visitPanel"); tester.startComponent(v); tester.assertContains("DATE"); } </code></pre> <p>The panel</p> <pre><code>public VisitPanel(String id) { super(id); add( new Label("visitDate", "DATE")); add( new Label("visitStage", "VISIT SIGNED")); } </code></pre> <p>And the html</p> <pre><code>&lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt; &lt;html xmlns="http://www.w3.org/1999/xhtml" xmlns:wicket="http://wicket.sourceforge.net/" xml:lang="en" lang="en"&gt; &lt;wicket:head&gt; &lt;/wicket:head&gt; &lt;body&gt; &lt;wicket:panel&gt; &lt;span wicket:id="visitDate"&gt;VISIT DATE&lt;/span&gt; &lt;span wicket:id="visitStage"&gt;STAGE&lt;/span&gt; &lt;/wicket:panel&gt; &lt;/body&gt; &lt;/html&gt; </code></pre>
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