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POPHPUnit - multiple stubs of same class
 

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    <p>I'm building unit tests for class <code>Foo</code>, and I'm fairly new to unit testing.</p> <p>A key component of my class is an instance of <code>BarCollection</code> which contains a number of <code>Bar</code> objects. One method in <code>Foo</code> iterates through the collection and calls a couple methods on each <code>Bar</code> object in the collection. I want to use stub objects to generate a series of responses for my test class. How do I make the <code>Bar</code> stub class return different values as I iterate? I'm trying to do something along these lines:</p> <pre><code>$stubs = array(); foreach ($array as $value) { $barStub = $this-&gt;getMock('Bar'); $barStub-&gt;expects($this-&gt;any()) -&gt;method('GetValue') -&gt;will($this-&gt;returnValue($value)); $stubs[] = $barStub; } // populate stubs into `Foo` // assert results from `Foo-&gt;someMethod()` </code></pre> <p>So <code>Foo-&gt;someMethod()</code> will produce data based on the results it receives from the <code>Bar</code> objects. But this gives me the following error whenever the array is longer than one:</p> <pre><code>There was 1 failure: 1) testMyTest(FooTest) with data set #2 (array(0.5, 0.5)) Expectation failed for method name is equal to &lt;string:GetValue&gt; when invoked zero or more times. Mocked method does not exist. /usr/share/php/PHPUnit/Framework/MockObject/Mock.php(193) : eval()'d code:25 </code></pre> <p>One thought I had was to use <code>-&gt;will($this-&gt;returnCallback())</code> to invoke a callback method, but I don't know how to indicate to the callback which <code>Bar</code> object is making the call (and consequently what response to give).</p> <p>Another idea is to use the <code>onConsecutiveCalls()</code> method, or something like it, to tell my stub to return 1 the first time, 2 the second time, etc, but I'm not sure exactly how to do this. I'm also concerned that if my class ever does anything other than ordered iteration on the collection, I won't have a way to test it.</p>
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