Akka.Streams.Tests.Dsl.FlowIntersperseSpec.A_Intersperse_must_inject_element_between_existing_elements_when_downstream_is_aggregate C# (CSharp) Method

        public void A_Intersperse_must_inject_element_between_existing_elements_when_downstream_is_aggregate()
        {
            var concated =
                Source.From(new[] { 1, 2, 3 })
                    .Select(x => x.ToString())
                    .Intersperse(",")
                    .RunAggregate("", (s, s1) => s + s1, Materializer);

            concated.Wait(TimeSpan.FromSeconds(3)).Should().BeTrue();
            concated.Result.Should().Be("1,2,3");
        }