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copied!<p>I usually have a data provider to test my input filters.</p> <p>Here's an example input filter with two really simple fields:</p> <pre class="lang-php prettyprint-override"><code>use Zend\InputFilter\InputFilter; use Zend\InputFilter\Input; use Zend\I18n\Validator\Alnum; class MyInputFilter extends InputFilter { public function __construct() { $name = new Input('name'); $name->setRequired(false)->setAllowEmpty(true); $this->add($name); $nickname = new Input('nickname'); $nickname->getValidatorChain()->attach(new Alnum()); $this->add($nickname); } } </code></pre> <p>And here's a test class for it:</p> <pre class="lang-php prettyprint-override"><code>class MyInputFilterTest extends \PHPUnit_Framework_TestCase { public function setUp() { $this->inputFilter = new MyInputFilter(); } /** @dataProvider validatedDataProvider */ public function testValidation($data, $valid) { $this->inputFilter->setData($data); $this->assertSame($valid, $this->inputFilter->isValid()); } public function validatedDataProvider() { return array( array( array(), false ), array( array('name' => '', 'nickname' => 'Ocramius'), true ), array( array('name' => 'Test', 'nickname' => 'Ocramius'), true ), array( array('name' => 'Test', 'nickname' => 'Hax$or'), false ), ); } } </code></pre> <p>This is a very simple example, but I am basically throwing different datasets at the filter and checking what is relevant to me (in this case checking that data is valid or invalid).</p> <p>If your filter applies transformations on the data, you may also want to check what the output of <code>$inputFilter->getValues()</code> is.</p> <p>If the error messages are relevant to you, you can also check <code>$inputFilter->getMessages()</code>.</p>

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