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POHow to use FakeItEasy to fake Enumerable class
 

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  1. POHow to use FakeItEasy to fake Enumerable class
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    <p>I am learning to use/perform/write tests for my code and started using FakeItEasy for my fake/mock objects, now I have encountered a problem :</p> <p>I have the following class that implements <code>IEnumerable</code> and internal class that implements <code>IEnumerator</code> (not complete code below) :</p> <pre><code>public interface IEnumarableString : IEnumarable { } public class AdvancedString : IEnumarableString { private string[] _strings; private class StringEnumerator : IEnumerator { private IEnumerator GetEnumerator() { return (IEnumerator)this; } public object Current {get; set;} public bool MoveNext() { _position++; return _position &lt; strings.Length; } public void Reset() { _position = -1; } } public IEnumerator GetEnumerator() { return new StringEnumerator(_strings); } } </code></pre> <p>I want to use FakeItEasy on my tests and "fake" its iterative behavior, I tried the following code but it does not iterate through itself when it needs to (just skip the foreach like there are no elements) :</p> <pre><code>IEnumarableString stringFake = A.Fake&lt;IEnumarableString&gt;(); A.CallTo(() =&gt; stringFake.GetEnumerator().MoveNext()).Returns(false).Once(); A.CallTo(() =&gt; stringFake.GetEnumerator().MoveNext()).Returns(true).Once(); </code></pre> <p>tried to search the net for example but could not find any. for now my question is how do I configure the <code>stringFake.GetEnumerator()</code> to return the right object so the iteration will work or am I doing something wrong here ?</p> <p>Any help would be appreciated.</p> <p>Thanks</p>
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    1. COWhy are you not using `IEnumerable<string>`?
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    2. CO`Current` is null always ?
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    3. CO@TimS - because i need some extra functionality that IEnumarable<string> does not supply, this is not the entire class just the relevant parts
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