public static void test_cancel_after_resolve()
{
bool callbackCalled = false;
eina.Error received_error = eina.Error.NO_ERROR;
efl.ILoop loop = efl.App.GetLoopMain();
eina.Promise promise = new eina.Promise();
eina.Future future = new eina.Future(promise);
future = future.Then((eina.Value value) => {
callbackCalled = true;
value.Get(out received_error);
return(value);
});
promise.Reject(eina.Error.EPERM);
future.Cancel();
loop.Iterate();
Test.Assert(callbackCalled, "Future callback should have been called.");
Test.AssertEquals(received_error, eina.Error.ECANCELED);
Test.AssertRaises <ObjectDisposedException>(() => { promise.Resolve(null); });
Test.AssertRaises <ObjectDisposedException>(future.Cancel);
}
public static void test_simple_cancel()
{
bool cleanCalled = false;
eina.Promise promise = new eina.Promise(() => { cleanCalled = true; });
eina.Future future = new eina.Future(promise);
future.Cancel();
Test.Assert(cleanCalled, "Promise clean callback should have been called.");
Test.AssertRaises <ObjectDisposedException>(() => { promise.Resolve(null); });
Test.AssertRaises <ObjectDisposedException>(future.Cancel);
}
public static System.Threading.Tasks.Task <eina.Value> WrapAsync(eina.Future future, CancellationToken token)
{
// Creates a task that will wait for SetResult for completion.
// TaskCompletionSource is used to create tasks for 'external' Task sources.
var tcs = new System.Threading.Tasks.TaskCompletionSource <eina.Value>();
// Flag to be passed to the cancell callback
bool fulfilled = false;
future.Then((eina.Value received) => {
lock (future)
{
// Convert an failed Future to a failed Task.
if (received.GetValueType() == eina.ValueType.Error)
{
eina.Error err;
received.Get(out err);
if (err == eina.Error.ECANCELED)
{
tcs.SetCanceled();
}
else
{
tcs.TrySetException(new efl.FutureException(received));
}
}
else
{
// Will mark the returned task below as completed.
tcs.SetResult(received);
}
fulfilled = true;
return(received);
}
});
// Callback to be called when the token is cancelled.
token.Register(() => {
lock (future)
{
// Will trigger the Then callback above with an eina.Error
if (!fulfilled)
{
future.Cancel();
}
}
});
return(tcs.Task);
}
public static void test_simple_future_cancel()
{
bool callbackCalled = false;
bool promiseCallbackCalled = false;
eina.Error received_error = eina.Error.NO_ERROR;
eina.Promise promise = new eina.Promise(() => { promiseCallbackCalled = true; });
eina.Future future = new eina.Future(promise);
future = future.Then((eina.Value value) => {
callbackCalled = true;
value.Get(out received_error);
return(value);
});
future.Cancel();
Test.Assert(promiseCallbackCalled, "Promise cancel callback should have been called.");
Test.Assert(callbackCalled, "Future callback should have been called.");
Test.AssertEquals(received_error, eina.Error.ECANCELED);
}