test(battle-node): end-to-end flow test through Ready via WebApplicationFactory
Boots SVSimTestFactory (in-memory SQLite + reference-data CSV import), mints a battle via IMatchingBridge, opens a raw Socket.IO v2 client against the in-process TestServer, drives InitNetwork → Loaded → Swap, and asserts the right scripted frames come back in order. Verifies the full transport stack end-to-end: EIO3+SIO2 framing, encryptForNode codec, MsgPayloadCodec roundtrip, InboundTracker pubSeq dedup + ack echo, OutboundSequencer playSeq assignment, and ScriptedLifecycle's Path-A frame builders. Note: RawSocketIoTestClient.DisposeAsync skips the graceful CloseAsync handshake — TestServer's in-process WebSocket implementation can hang on it. Abrupt Dispose is fine: the server's ReceiveAsync throws WebSocketException, BattleSession.RunAsync returns, and the handler completes. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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gamer147
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using Microsoft.AspNetCore.Mvc.Testing;
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using Microsoft.Extensions.DependencyInjection;
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using NUnit.Framework;
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using SVSim.BattleNode.Bridge;
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using SVSim.BattleNode.Protocol;
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using SVSim.BattleNode.Wire;
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using SVSim.EmulatedEntrypoint;
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using SVSim.UnitTests.Infrastructure;
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namespace SVSim.UnitTests.BattleNode.Integration;
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[TestFixture]
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public class BattleNodeFlowTests
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{
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/// <summary>
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/// End-to-end smoke for the v1 scripted lifecycle. Boots the EmulatedEntrypoint via
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/// SVSimTestFactory (in-memory SQLite + reference-data CSV import), mints a battle
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/// through IMatchingBridge, opens a raw Socket.IO v2 client against the in-process
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/// TestServer, and drives InitNetwork → Loaded → Swap, asserting the right scripted
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/// frames come back in order.
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/// </summary>
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[Test]
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[Timeout(30000)]
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public async Task ClientWalksHandshakeToReady_ReceivesAllScriptedFrames()
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{
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await using var factory = new SVSimTestFactory();
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var bridge = factory.Services.GetRequiredService<IMatchingBridge>();
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using var cts = new CancellationTokenSource(TimeSpan.FromSeconds(15));
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var ct = cts.Token;
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var pending = bridge.RegisterPendingBattle(viewerId: 906243102);
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var key = MakeKey();
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var encryptedVid = NodeCrypto.EncryptForNode("906243102", key);
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// TestServer ignores the host portion of the URI — only the path + query route.
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var wsUri = new Uri($"ws://localhost/socket.io/?BattleId={pending.BattleId}&viewerId={Uri.EscapeDataString(encryptedVid)}&EIO=3&transport=websocket");
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var wsClient = factory.Server.CreateWebSocketClient();
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var ws = await wsClient.ConnectAsync(wsUri, ct);
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await using var client = new RawSocketIoTestClient(ws);
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await client.ConsumeHandshakeAsync(ct);
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// 1. InitNetwork → expect InitNetwork ack push, then Matched, then BattleStart.
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await client.SendMsgAsync(MakeEnvelope(NetworkBattleUri.InitNetwork, pubSeq: 1), key, ct);
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var f1 = await client.ReceiveSynchronizeAsync(ct);
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var f2 = await client.ReceiveSynchronizeAsync(ct);
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var f3 = await client.ReceiveSynchronizeAsync(ct);
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Assert.That(f1.Uri, Is.EqualTo(NetworkBattleUri.InitNetwork));
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Assert.That(f2.Uri, Is.EqualTo(NetworkBattleUri.Matched));
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Assert.That(f3.Uri, Is.EqualTo(NetworkBattleUri.BattleStart));
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// 2. Loaded → expect Deal.
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await client.SendMsgAsync(MakeEnvelope(NetworkBattleUri.Loaded, pubSeq: 2), key, ct);
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Assert.That((await client.ReceiveSynchronizeAsync(ct)).Uri, Is.EqualTo(NetworkBattleUri.Deal));
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// 3. Swap with empty idxList → expect Swap response + Ready.
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await client.SendMsgAsync(MakeEnvelope(NetworkBattleUri.Swap, pubSeq: 3,
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body: new Dictionary<string, object?> { ["idxList"] = new List<object?>() }), key, ct);
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Assert.That((await client.ReceiveSynchronizeAsync(ct)).Uri, Is.EqualTo(NetworkBattleUri.Swap));
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Assert.That((await client.ReceiveSynchronizeAsync(ct)).Uri, Is.EqualTo(NetworkBattleUri.Ready));
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}
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private static MsgEnvelope MakeEnvelope(NetworkBattleUri uri, long pubSeq, Dictionary<string, object?>? body = null) =>
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new(uri, ViewerId: 906243102, Uuid: "udid-test", Bid: null, Try: 0,
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Cat: uri == NetworkBattleUri.InitNetwork ? EmitCategory.General : EmitCategory.Battle,
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PubSeq: pubSeq, PlaySeq: null, Body: body ?? new Dictionary<string, object?>());
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private static string MakeKey()
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{
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var seq = 0;
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return NodeCrypto.GenerateKey(() => (seq++ * 13) % 16);
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}
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}
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118
SVSim.UnitTests/BattleNode/Integration/RawSocketIoTestClient.cs
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118
SVSim.UnitTests/BattleNode/Integration/RawSocketIoTestClient.cs
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using System.Net.WebSockets;
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using System.Text;
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using MessagePack;
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using SVSim.BattleNode.Protocol;
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using SVSim.BattleNode.Wire;
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namespace SVSim.UnitTests.BattleNode.Integration;
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/// <summary>
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/// Minimal raw-WS Socket.IO v2 client for integration testing. Knows enough to send msg events
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/// with one binary attachment, receive synchronize pushes, and ack-callback echo. Takes a
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/// connected <see cref="WebSocket"/> (typically from <c>TestServer.CreateWebSocketClient()</c>).
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/// </summary>
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internal sealed class RawSocketIoTestClient : IAsyncDisposable
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{
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private readonly WebSocket _ws;
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private int _nextAckId = 1;
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public RawSocketIoTestClient(WebSocket connectedWebSocket) => _ws = connectedWebSocket;
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public async Task ConsumeHandshakeAsync(CancellationToken ct = default)
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{
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// Receive and discard the EIO Open frame the server sent on connect.
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await ReceiveTextAsync(ct);
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}
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public async Task<MsgEnvelope> ReceiveSynchronizeAsync(CancellationToken ct = default)
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{
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while (true)
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{
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var text = await ReceiveTextAsync(ct);
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var eio = EngineIoFrame.Parse(text);
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if (eio.Type == EngineIoPacketType.Ping)
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{
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await SendTextAsync("3", ct);
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continue;
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}
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if (eio.Type != EngineIoPacketType.Message) continue;
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var sioHeader = SocketIoFrame.Parse(eio.Payload);
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if (sioHeader.AttachmentCount == 0)
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{
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// Could be an ack — ignore.
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continue;
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}
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var attachments = new List<byte[]>();
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for (var i = 0; i < sioHeader.AttachmentCount; i++)
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attachments.Add(await ReceiveBinaryAsync(ct));
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var assembled = sioHeader.WithAttachments(attachments);
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return MsgPayloadCodec.Decode(assembled.BinaryAttachments[0]);
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}
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}
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public async Task SendMsgAsync(MsgEnvelope env, string key, CancellationToken ct = default)
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{
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var bytes = MsgPayloadCodec.Encode(env, key);
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var sio = SocketIoFrame.BinaryEventWithAttachments("msg", new[] { bytes });
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var (text, bins) = sio.Encode();
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// Insert ack id for ackable emits (those with pubSeq).
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if (env.PubSeq.HasValue)
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{
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var id = _nextAckId++;
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// Re-encode with ackId by hand: type + N + - + id + json
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text = $"5{bins.Count}-{id}{text.Substring(text.IndexOf('['))}";
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}
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await SendTextAsync($"{(int)EngineIoPacketType.Message}{text}", ct);
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foreach (var b in bins)
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await _ws.SendAsync(b, WebSocketMessageType.Binary, true, ct);
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}
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private async Task<string> ReceiveTextAsync(CancellationToken ct)
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{
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using var ms = new MemoryStream();
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var buffer = new byte[8192];
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WebSocketReceiveResult result;
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do
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{
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result = await _ws.ReceiveAsync(buffer, ct);
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ms.Write(buffer, 0, result.Count);
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} while (!result.EndOfMessage);
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return Encoding.UTF8.GetString(ms.ToArray());
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}
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private async Task<byte[]> ReceiveBinaryAsync(CancellationToken ct)
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{
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using var ms = new MemoryStream();
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var buffer = new byte[8192];
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WebSocketReceiveResult result;
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do
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{
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result = await _ws.ReceiveAsync(buffer, ct);
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ms.Write(buffer, 0, result.Count);
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} while (!result.EndOfMessage);
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return ms.ToArray();
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}
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private Task SendTextAsync(string text, CancellationToken ct)
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{
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var bytes = Encoding.UTF8.GetBytes(text);
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return _ws.SendAsync(bytes, WebSocketMessageType.Text, true, ct);
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}
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public ValueTask DisposeAsync()
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{
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// TestServer's in-process WebSocket doesn't always complete the graceful Close
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// handshake — it can hang the test host shutdown. Abrupt dispose is fine for tests:
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// the server-side ReceiveAsync throws WebSocketException, BattleSession.RunAsync
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// returns, and the handler completes.
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_ws.Dispose();
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return ValueTask.CompletedTask;
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}
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}
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// Note on attachments: the SocketIO v2 protocol can split binary attachments across multiple WS
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// frames, but in practice BestHTTP / our codec emits one attachment per binary WS frame, so the
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// receive loop assumes that ordering. If integration tests start to flake on multi-attachment
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// pushes, revisit ReceiveBinaryAsync to handle multi-frame attachments.
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