public async Task WhenAny_CompletesWhenAnyOperationCompletes()
{
// Arrange
var op1 = AsyncResult.Delay(1);
var op2 = AsyncResult.Delay(Timeout.Infinite);
// Act
await AsyncResult.WhenAny(op1, op2);
// Assert
AssertCompleted(op1);
}
public async Task ToTask_CompletesWhenSourceCompletes()
{
// Arrange
var op = AsyncResult.Delay(1);
var task = op.ToTask();
// Act
await task;
// Assert
Assert.True(op.IsCompleted);
}
public async Task WhenAll_CompletesWhenAllOperationsCompleted()
{
// Arrange
var op1 = AsyncResult.Delay(1);
var op2 = AsyncResult.Delay(2);
// Act
await AsyncResult.WhenAll(op1, op2);
// Assert
AssertCompleted(op1);
AssertCompleted(op2);
}
public async Task TryAddCompletionCallback_ExecutesWhenOperationCompletes()
{
// Arrange
var op = AsyncResult.Delay(1);
var callbackCalled = false;
op.TryAddCompletionCallback(_ => callbackCalled = true, null);
// Act
await op;
// Assert
Assert.True(callbackCalled);
}
public async Task Unwrap_SucceedsIfBothOperationsSucceed()
{
// Arrange
var op1 = AsyncResult.Delay(1);
var op2 = AsyncResult.FromResult(op1);
// Act
var op = op2.Unwrap();
await op;
// Assert
Assert.True(op.IsCompletedSuccessfully);
Assert.True(op1.IsCompleted);
Assert.True(op2.IsCompleted);
}
public async Task ContinueWth_ExecutesOnAntecedentSuccess(AsyncContinuationOptions options, bool expectedCalled)
{
// Arrange
var op = AsyncResult.Delay(1);
var continuationCalled = false;
var continuationCanceled = false;
var continuation = op.ContinueWith(o => continuationCalled = true, options);
// Act
try
{
await continuation;
}
catch (OperationCanceledException)
{
continuationCanceled = true;
}
// Assert
Assert.Equal(expectedCalled, continuationCalled);
Assert.Equal(!expectedCalled, continuationCanceled);
}
public async Task Retry_CompletesWhenSourceCompletes()
{
// Arrange
var counter = 3;
IAsyncOperation OpFactory()
{
if (--counter > 0)
{
return(AsyncResult.FromException(new Exception()));
}
else
{
return(AsyncResult.Delay(1));
}
}
// Act
var op = AsyncResult.Retry(OpFactory, 1);
await op;
// Assert
AssertCompleted(op);
}
/// <summary>
/// Creates an operation that completes after a time delay.
/// </summary>
/// <param name="delay">The time span to wait before completing the returned operation, or <c>TimeSpan.FromMilliseconds(-1)</c> to wait indefinitely.</param>
/// <exception cref="ArgumentOutOfRangeException">Thrown if the <paramref name="delay"/> represents a negative time interval other than <c>TimeSpan.FromMillseconds(-1)</c>.</exception>
/// <returns>An operation that represents the time delay.</returns>
/// <seealso cref="Delay(int)"/>
/// <seealso cref="Delay(float)"/>
public static IAsyncOperation Delay(TimeSpan delay)
{
return(AsyncResult.Delay(delay, GetRootBehaviour().UpdateSource));
}
/// <summary>
/// Creates an operation that completes after a time delay.
/// </summary>
/// <param name="secondsDelay">The number of seconds to wait before completing the returned operation, or -1 to wait indefinitely.</param>
/// <exception cref="ArgumentOutOfRangeException">Thrown if the <paramref name="secondsDelay"/> is less than -1.</exception>
/// <returns>An operation that represents the time delay.</returns>
/// <seealso cref="Delay(int)"/>
/// <seealso cref="Delay(TimeSpan)"/>
public static IAsyncOperation Delay(float secondsDelay)
{
return(AsyncResult.Delay(secondsDelay, GetRootBehaviour().UpdateSource));
}
/// <summary>
/// Creates an operation that completes after a time delay.
/// </summary>
/// <param name="millisecondsDelay">The number of milliseconds to wait before completing the returned operation, or -1 to wait indefinitely.</param>
/// <exception cref="ArgumentOutOfRangeException">Thrown if the <paramref name="millisecondsDelay"/> is less than -1.</exception>
/// <returns>An operation that represents the time delay.</returns>
/// <seealso cref="Delay(float)"/>
/// <seealso cref="Delay(TimeSpan)"/>
public static IAsyncOperation Delay(int millisecondsDelay)
{
return(AsyncResult.Delay(millisecondsDelay, _rootBehaviour.UpdateSource));
}