public async void ShouldWriteToStreamWhenFlushedAsync()
{
var stream = new MemoryStream();
var writer = new MessageWriter(stream, CreatePackStreamFactory());
writer.Write(new RunMessage("RETURN $x", new Dictionary <string, object> {
{ "x", 1L }
}));
await writer.FlushAsync();
Assert.NotEmpty(stream.ToArray());
}