public void Invokes_callback_on_async_completion()
{
OneAsyncStepOperation op = new OneAsyncStepOperation();
object state = new object();
IAsyncResult returnedResult = null;
IAsyncResult callbackResult = null;
AsyncCallback callback = delegate(IAsyncResult r)
{
callbackResult = r;
Assert.NotNull(returnedResult);
Assert.Same(state, r.AsyncState);
Assert.Equal(1234, OneAsyncStepOperation.End(r));
};
returnedResult = op.Start(callback, state);
Assert.Null(callbackResult);
Assert.False(returnedResult.IsCompleted);
op.Complete(1234);
Assert.True(returnedResult.IsCompleted);
Assert.False(returnedResult.CompletedSynchronously);
Assert.Same(callbackResult, returnedResult);
}
public void Completes_async_after_one_async_step()
{
OneAsyncStepOperation op = new OneAsyncStepOperation();
IAsyncResult result = op.Start(null, null);
Assert.False(result.IsCompleted);
op.Complete(1234);
Assert.True(result.IsCompleted);
Assert.False(result.CompletedSynchronously);
Assert.Equal(1234, OneAsyncStepOperation.End(result));
}
public void Completes_with_async_exception_after_one_async_step_with_async_exception()
{
InvalidTimeZoneException expected = new InvalidTimeZoneException("Expected.");
OneAsyncStepOperation op = new OneAsyncStepOperation();
IAsyncResult result = op.Start(null, null);
Assert.False(result.IsCompleted);
op.Complete(expected);
Assert.True(result.IsCompleted);
Assert.False(result.CompletedSynchronously);
InvalidTimeZoneException actual = Assert.Throws <InvalidTimeZoneException>(() => OneAsyncStepOperation.End(result));
Assert.Same(expected, actual);
}