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POMockito is giving infinite while loops and finite for loops on the same NavigationSet
 

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    <ul> <li>I am using <strong>Mockito</strong> in a <strong>JUnit test</strong>. I mocked a <code>NavigableSet</code>.</li> <li>In my unit test at some point I need to loop into the objects contained in this <code>NavigableSet</code>.</li> <li>I planned this <code>NavigableSet</code>, for testing purposes, to contain only 1 object.</li> </ul> <p>The following is the code I used with Mockito to create the mock object:</p> <pre><code>NavigableSet&lt;ObjectToProcess&gt; newMockedSet = new TreeSet&lt;ObjectToProcess&gt;(); ObjectToProcess mockedInnerObject = new ObjectToProcess(); // initialization of this object newMockedSet.add(mockedInnerObject); // I just added the only 1 object contained in the NavigableSet Mockito.when(getSetOfObjectToProcess()).thenReturn(newMockedSet); </code></pre> <p>Why the following <code>while</code> loop is giving an infinite loop with a <code>NavigableSet</code> containing only 1 object?</p> <pre><code>NavigableSet&lt;ObjectToProcess&gt; anotherSetOfObjects = getSetOfObjectToProcess(); // retrieving the mocked object while (anotherSetOfObjects.iterator().hasNext()) { ObjectToProcess thisPaymentDemand = anotherSetOfObjects.iterator().next(); // do stuff } </code></pre> <p>Why the following <code>for</code> loop is behaving as expected looping only once? </p> <pre><code>NavigableSet&lt;ObjectToProcess&gt; anotherSetOfObjects = getSetOfObjectToProcess(); // retrieving the mocked object for (ObjectToProcess thisMockedInnerObject : anotherSetOfObjects) { ObjectToProcess thisPaymentDemand = thisMockedInnerObject; // do stuff } </code></pre>
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