/// <inheritdoc cref="IAsyncToken{T}"/>
public IAsyncToken <TR> Map <TR>(Func <T, TR> map)
{
var output = new AsyncToken <TR>();
OnSuccess(value => output.Succeed(map(value)));
OnFailure(output.Fail);
return(output);
}
/// <inheritdoc cref="IAsyncToken{T}"/>
public IAsyncToken <T> Token()
{
var token = new AsyncToken <T>();
OnSuccess(token.Succeed);
OnFailure(token.Fail);
return(token);
}
public void OnSuccessCalledAfterResolved()
{
var token = new AsyncToken <TestResult>();
var called = false;
token.Succeed(new TestResult());
token.OnSuccess(_ => called = true);
Assert.IsTrue(called);
}
public void OnSuccessNotCalledAfterResolved()
{
var token = new AsyncToken <TestResult>();
var called = false;
token.Fail(new Exception());
token.OnSuccess(_ => called = true);
Assert.IsFalse(called);
}
public void OnFinallyCalledFromFail()
{
var token = new AsyncToken <TestResult>();
var called = false;
token.OnFinally(_ => called = true);
token.Fail(new Exception());
Assert.IsTrue(called);
}
public void OnFinallyCalledFromSucceed()
{
var token = new AsyncToken <TestResult>();
var called = false;
token.OnFinally(_ => called = true);
token.Succeed(new TestResult());
Assert.IsTrue(called);
}
public void OnFinallyNotCalledAfterAbort()
{
var token = new AsyncToken <TestResult>();
var called = false;
token.OnFinally(_ => called = true);
token.Abort();
token.Fail(new Exception());
Assert.IsFalse(called);
}
public void OnSuccessAborted()
{
var token = new AsyncToken <TestResult>();
var called = false;
token.OnSuccess(_ => called = true);
token.Abort();
token.Succeed(new TestResult());
token.OnSuccess(_ => called = true);
Assert.IsFalse(called);
}
public void OnFailureAborted()
{
var token = new AsyncToken <TestResult>();
var called = false;
token.OnFailure(_ => called = true);
token.Abort();
token.OnFailure(_ => called = true);
token.Fail(new Exception());
Assert.IsFalse(called);
}
public void AbortInCallbackNotRespected()
{
var token = new AsyncToken <TestResult>();
var called = false;
token
.OnSuccess(_ => token.Abort())
.OnSuccess(_ => called = true)
.OnFinally(_ => called = true);
token.Succeed(new TestResult());
Assert.IsTrue(called);
}
public void Token()
{
var token = new AsyncToken <TestResult>();
var successCalled = true;
token
.Token()
.OnSuccess(_ => successCalled = true);
token.Succeed(new TestResult());
Assert.IsTrue(successCalled);
}
/// <summary>
/// Creates a single token from a collection of tokens.
///
/// A failure from any one of the tokens will result in a failure of
/// the returned token. If only a single token fails, only that exception
/// is returned. If multiple tokens fail, an <c>AggregateException</c>
/// is returned.
///
/// If no tokens are passed in, the returned token is a Success.
///
/// TODO: TESTS.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="tokens"></param>
/// <returns></returns>
public static IAsyncToken <T[]> All <T>(params IAsyncToken <T>[] tokens)
{
var len = tokens.Length;
if (0 == len)
{
return(new AsyncToken <T[]>(new T[0]));
}
var returnToken = new AsyncToken <T[]>();
var values = new T[len];
var exceptions = new List <Exception>();
var numReturned = 0;
for (var i = 0; i < len; i++)
{
var token = tokens[i];
var index = i;
token
.OnSuccess(value => values[index] = value)
.OnFailure(exception => exceptions.Add(exception))
.OnFinally(_ =>
{
if (++numReturned == len)
{
if (exceptions.Count > 1)
{
var aggregate = new AggregateException();
aggregate.Exceptions.AddRange(exceptions);
returnToken.Fail(aggregate);
}
else if (exceptions.Count == 1)
{
returnToken.Fail(exceptions[0]);
}
else
{
returnToken.Succeed(values);
}
}
});
}
return(returnToken);
}
public void OnFinallyCalledInOrderOnFailure()
{
var token = new AsyncToken <TestResult>();
var failCalled = false;
var finallyCalled = false;
token
.OnFailure(_ => failCalled = true)
.OnFinally(_ =>
{
Assert.IsTrue(failCalled);
finallyCalled = true;
});
token.Fail(new Exception());
Assert.IsTrue(finallyCalled);
}
public void OnFinallyCalledInOrderOnSuccess()
{
var token = new AsyncToken <TestResult>();
var successCalled = false;
var finallyCalled = false;
token
.OnSuccess(_ => successCalled = true)
.OnFinally(_ =>
{
Assert.IsTrue(successCalled);
finallyCalled = true;
});
token.Succeed(new TestResult());
Assert.IsTrue(finallyCalled);
}
public void ExceptionIsCaughtOnFinally()
{
var token = new AsyncToken <TestResult>();
var exception = new Exception();
var called = false;
try
{
token
.OnSuccess(_ => throw exception)
.OnFinally(_ => called = true);
token.Succeed(new TestResult());
}
catch (Exception thrown)
{
Assert.AreSame(exception, thrown);
}
Assert.IsTrue(called);
}
public void AggregateExceptionCreated()
{
var token = new AsyncToken <TestResult>();
var exception1 = new Exception();
var exception2 = new Exception();
var called = false;
try
{
token
.OnSuccess(_ => throw exception1)
.OnSuccess(_ => throw exception2)
.OnSuccess(_ => called = true);
token.Succeed(new TestResult());
}
catch (AggregateException exception)
{
Assert.AreEqual(2, exception.Exceptions.Count);
}
Assert.IsTrue(called);
}
public void OnSuccessCalledExclusively()
{
var token = new AsyncToken <TestResult>();
var value = new TestResult();
var successCalled = false;
var failureCalled = false;
token
.OnSuccess(returnedValue =>
{
successCalled = true;
Assert.AreSame(value, returnedValue);
})
.OnFailure(exception =>
{
failureCalled = true;
});
token.Succeed(value);
Assert.IsTrue(successCalled);
Assert.IsFalse(failureCalled);
}
public async Task TaskSuccess()
{
var token = new AsyncToken <float>();
var callbackResult = 0f;
token.OnSuccess(val => callbackResult = val);
var taskResult = 0f;
var task = token
.AsTask()
.ContinueWith(cTask =>
{
taskResult = cTask.Result;
});
var expectedValue = 2.26f;
token.Succeed(expectedValue);
await task;
Assert.AreEqual(expectedValue, callbackResult);
Assert.AreEqual(expectedValue, taskResult);
}
public async Task TaskAborted()
{
var token = new AsyncToken <float>();
Exception callbackException = null;
token.OnFailure(exception => callbackException = exception);
var task = token.AsTask();
var taskSuccess = false;
token.Abort();
try
{
await task;
taskSuccess = true;
}
catch (Exception exception)
{
Assert.IsTrue(exception is OperationCanceledException);
}
Assert.IsFalse(taskSuccess);
}
public async Task TaskFail()
{
var token = new AsyncToken <float>();
Exception callbackException = null;
token.OnFailure(exception => callbackException = exception);
var task = token.AsTask();
var expectedException = new InvalidOperationException("Test exception");
token.Fail(expectedException);
try
{
await task;
}
catch (Exception exception)
{
Assert.AreEqual(expectedException, exception);
}
Assert.AreEqual(expectedException, callbackException);
}
