UniTask/src/UniTask.NetCoreTests/AsyncReactivePropertyTest.cs

using Cysharp.Threading.Tasks;
using FluentAssertions;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Channels;
using Cysharp.Threading.Tasks.Linq;
using System.Threading.Tasks;
using Xunit;

namespace NetCoreTests
{
    public class AsyncReactivePropertyTest
    {
        [Fact]
        public async Task Iteration()
        {
            var rp = new AsyncReactiveProperty<int>(99);

            var f = await rp.FirstAsync();
            f.Should().Be(99);

            var array = rp.Take(5).ToArrayAsync();

            rp.Value = 100;
            rp.Value = 100;
            rp.Value = 100;
            rp.Value = 131;

            var ar = await array;

            ar.Should().BeEquivalentTo(new[] { 99, 100, 100, 100, 131 });
        }

        [Fact]
        public async Task WithoutCurrent()
        {
            var rp = new AsyncReactiveProperty<int>(99);

            var array = rp.WithoutCurrent().Take(5).ToArrayAsync();

            rp.Value = 100;
            rp.Value = 100;
            rp.Value = 100;
            rp.Value = 131;
            rp.Value = 191;

            var ar = await array;

            ar.Should().BeEquivalentTo(new[] { 100, 100, 100, 131, 191 });
        }

        [Fact]
        public async Task StateIteration()
        {
            var rp = new State<int>(99);
            var setter = rp.GetSetter();

            var f = await rp.FirstAsync();
            f.Should().Be(99);

            var array = rp.Take(5).ToArrayAsync();

            setter(100);
            setter(100);
            setter(100);
            setter(131);

            var ar = await array;

            ar.Should().BeEquivalentTo(new[] { 99, 100, 100, 100, 131 });
        }

        [Fact]
        public async Task StateWithoutCurrent()
        {
            var rp = new State<int>(99);
            var setter = rp.GetSetter();

            var array = rp.WithoutCurrent().Take(5).ToArrayAsync();
            setter(100);
            setter(100);
            setter(100);
            setter(131);
            setter(191);

            var ar = await array;

            ar.Should().BeEquivalentTo(new[] { 100, 100, 100, 131, 191 });
        }



        [Fact]
        public void StateFromEnumeration()
        {
            var rp = new AsyncReactiveProperty<int>(10);

            var state = rp.ToState(CancellationToken.None);

            rp.Value = 10;
            state.Value.Should().Be(10);

            rp.Value = 20;
            state.Value.Should().Be(20);

            state.Dispose();

            rp.Value = 30;
            state.Value.Should().Be(20);
        }

    }


}