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POMagento - UnitTests - Mock Objects
 

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    <p>I am writing some tests for a Magento module, using <a href="http://www.ecomdev.org/2011/02/10/new-version-of-ecomdev_phpunit-0-1-2-extension-for-magento.html" rel="nofollow">Ivan Chepurnyi's extension</a>, and I'm having trouble using the mock objects.<br> Here is the class:</p> <pre><code>&lt;?php class Namespace_Module_Block_Class extends Mage_Core_Block_Template { private $_salesCollection; public function __construct() { $this-&gt;_salesCollection = Mage::getModel('module/classA')-&gt;getCollection() -&gt;addFieldToFilter('id', $this-&gt;_getId()); } public function _getId() { return Mage::getModel('module/classB')-&gt;getId();//session params } public function getSalesTotalNumber() { return $this-&gt;_salesCollection-&gt;count(); } } </code></pre> <p>The method I'm trying to test is <strong>getSalesTotalNumber()</strong>.<br> And here is the test:</p> <pre><code>&lt;?php class Namespace_Module_Test_Block_Class extends EcomDev_PHPUnit_Test_Case { private $_mock; public function setUp() { $this-&gt;_mock = $this-&gt;getMock('Namespace_Module_Block_Class', array('_getId') ); $this-&gt;_mock-&gt;expects($this-&gt;any()) -&gt;method('_getId') -&gt;will($this-&gt;returnValue(1024)); parent::setUp(); } /** * @test * @loadFixture * @loadExpectation */ public function testSalesTotalNumber() { $actual = $this-&gt;_mock-&gt;getSalesTotalValue(); $expected = $this-&gt;_getExpectations()-&gt;getSalesTotalNumber(); $this-&gt;assertEquals($expected, $actual); } } </code></pre> <p>As you can see, what I want to do is overwrite the <strong>_getId()</strong> method so that it returns an id which match the id in the fixture and so load the collection. But it doesn't work :-(. </p> <p>In my test, if I echo <code>$this-&gt;_mock-&gt;_getId()</code> it returns the correct Id (1024). But in the <code>__construct()</code> of my class <code>$this-&gt;_getId()</code> returns null, which is the <em>expected</em> value during testing (I mean, during testing there is no session, so it can't get the object's Id as I store it in a session variable). So the <strong>_getId()</strong> method isn't <em>mocked</em> by my test case. </p> <p>Any help will be highly appreciated.</p>
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    1. COOk, the prolem was not in the mock but in the class structure. I've deleted the `__construct()` and move his content to a private method which returns the collection object: my test passes and I have a better, decooupled class. I love TDD :D
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    2. COYou might consider answering your own question so other can find it more easily. It's perfectly allowed. At the moment it is classified under "unanswered"
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    3. COThat's true Peter, here you go :)
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