public async Task EntireUniverseTestAsync() { var dataStore = new InMemoryDataStore(); var(planet, children) = await Planetoid.GetPlanetForNewUniverseAsync(dataStore).ConfigureAwait(false); Assert.IsNotNull(planet); var stopwatch = new Stopwatch(); stopwatch.Start(); var json = JsonSerializer.Serialize(children); stopwatch.Stop(); var bytes = Encoding.UTF8.GetBytes(json); Console.WriteLine(); Console.WriteLine($"Size (System.Text.Json): {BytesToString(bytes.Length)}"); Console.WriteLine($"Serialization time (System.Text.Json): {stopwatch.Elapsed}"); //Console.WriteLine(); //Console.WriteLine("JSON (System.Text.Json):"); //Console.WriteLine(json); stopwatch.Reset(); stopwatch.Start(); var deserialized = JsonSerializer.Deserialize <List <CosmicLocation> >(json); stopwatch.Stop(); Assert.IsNotNull(deserialized); Assert.IsTrue(children.SequenceEqual(deserialized !)); Console.WriteLine($"Deserialization time (System.Text.Json): {stopwatch.Elapsed}"); }