public async Task CloseOutputAsync() { MemoryStream ms = new MemoryStream(); BsonDataWriter writer = new BsonDataWriter(ms); Assert.IsTrue(ms.CanRead); await writer.CloseAsync(); Assert.IsFalse(ms.CanRead); ms = new MemoryStream(); writer = new BsonDataWriter(ms) { CloseOutput = false }; Assert.IsTrue(ms.CanRead); await writer.CloseAsync(); Assert.IsTrue(ms.CanRead); }