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POTesting exceptions in async methods with Touch.Unit (NunitLite)
 

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  1. POTesting exceptions in async methods with Touch.Unit (NunitLite)
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    <p>I am trying to write unit test for my async method that throws exception.</p> <p>Here is my unit test. I am expecting WebException. The test fails as WebException is not returned immediately. Test runner exits with Unhandled Exception.</p> <p>Is there any way of testing exceptions in async methods with Touch.Unit?</p> <pre class="lang-cs prettyprint-override"><code>[Test] [ExpectedException(typeof(WebException))] public async void Throws_Exception_When_GetOrders() { DataService service = new DataService(); await service.GetOrders(); } </code></pre> <p>Console output </p> <pre><code>2013-07-01 16:46:08.552 TestsiOS[32724:c07] ExceptionsTests 2013-07-01 16:46:09.855 TestsiOS[32724:c07] [FAIL] Throws_Exception_When_GetOrders : System.Net.WebException was expected ... Unhandled Exception: System.Net.WebException: Error: NameResolutionFailure at System.Net.HttpWebRequest.EndGetResponse (IAsyncResult asyncResult) [0x00065] in /Developer/MonoTouch/Source/mono/mcs/class/System/System.Net/HttpWebRequest.cs:947 at RestSharp.Http.GetRawResponseAsync (IAsyncResult result, System.Action`1 callback) [0x00000] in &lt;filename unknown&gt;:0 ... </code></pre> <p>I have tried to return Task in my test method. It simply ignores my test method. </p> <pre><code>public async Task Throws_Exception_When_GetOrders() </code></pre> <p>I have also tried this. And the test run hangs up. </p> <pre><code>public void Throws_Exception_When_GetOrders() { DataService service = new DataService(); service.GetOrders().Wait(); } </code></pre>
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    1. USDaria Trainor
    1. USDaria Trainor
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    1. COI don't know Touch.Unit, but have you tried changing your method to `async Task`? If that doesn't work, the Touch.Unit probably doesn't support `async` tests.
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    2. COIf I change return type to Task it simply ignores my test method
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      1. USDaria Trainor
 

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