SerializationException in Parse cloud code. mdhost.exe crashes - parse-platform

Question

Setting up an nunit test project for some parse cloud code. Testing the hello world example cloud function I receive the following unhandled exception in Xamarin studio. (Test has passed a few times, but still receive exception)
SerializationException: Type 'Parse.ParseException' in Assembly 'Parse, Version=1.5.4.0, Culture=neutral, PublicKeyToken=ba48c3a442de616e' is not marked as serializable.
Also, mdhost.exe crashes a few seconds after the test runs.
Here is the Nunit test code.
[Test()]
public async void HelloTest(){
IDictionary<string, object> param = new Dictionary<string, object> ();
await ParseCloud.CallFunctionAsync<string>("hello",param).ContinueWith(t => {
string resp = t.Result;
Assert.AreEqual("Hello world!", resp);
});
}
I'm running Xamarin Studio 5.9.5 (build 9) on win7
Copied code over to Xamarin 5.9.4 (build 5) on mac. Test runs and passes without getting mdhost.exe crash. However still showing SerializationException.

Answer 1

(Misread your question on the first answer)
Your Parse call is failing with a Parse.ParseException and that exception is what is trying to be serialized/deserialized. Wrapping a try/catch and Asserting the exception should work in order to show the error code what is actually failing in the test. (I can not get a real Parse ParseException to throw but this should get you started).
Than you can lookup the code:
[Test ()]
public async void HelloTest ()
{
IDictionary<string, object> param = new Dictionary<string, object> ();
try {
await ParseCloud.CallFunctionAsync<string> ("hello", param).ContinueWith (t => {
string resp = t.Result;
Assert.AreEqual ("Hello world!", resp);
});
} catch (ParseException ex) {
Assert.Fail (String.Format("{0} : {1}", ex.Code, ex.Message));
} catch (Exception ex) {
Assert.Fail (ex.Message);
}
}