Add ConversationLog (start/append/end with monotonic per-convo index)

2026-06-11 21:13:50 +00:00
parent 99cfe60a2c
commit 13d8773704
3 changed files with 135 additions and 0 deletions
@@ -0,0 +1,71 @@
+using backend.Conversations;
+using backend.Data;
+using FluentAssertions;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.DependencyInjection;
+using Xunit;
+
+namespace backend.tests;
+
+public class ConversationLogTests(ApiFactory factory) : IClassFixture<ApiFactory>
+{
+    private readonly ApiFactory _factory = factory;
+
+    private async Task<(AppDbContext db, ConversationLog log, Guid deviceId)> ArrangeAsync()
+    {
+        var scope = _factory.Services.CreateScope();
+        var db = scope.ServiceProvider.GetRequiredService<AppDbContext>();
+        var log = scope.ServiceProvider.GetRequiredService<ConversationLog>();
+        var deviceId = Guid.NewGuid();
+        return (db, log, deviceId);
+    }
+
+    [Fact]
+    public async Task Start_creates_conversation_row()
+    {
+        var (db, log, deviceId) = await ArrangeAsync();
+
+        var convo = await log.StartAsync(deviceId, default);
+
+        var row = await db.Conversations.FirstAsync(c => c.Id == convo.Id);
+        row.DeviceId.Should().Be(deviceId);
+        row.EndedAt.Should().BeNull();
+        row.EndReason.Should().Be(EndReason.Unknown);
+    }
+
+    [Fact]
+    public async Task Turns_are_persisted_with_monotonic_index_per_conversation()
+    {
+        var (db, log, deviceId) = await ArrangeAsync();
+        var convo = await log.StartAsync(deviceId, default);
+
+        await log.AppendUserAsync(convo.Id, "hi", default);
+        await log.AppendAssistantAsync(convo.Id, "hello there", default);
+        await log.AppendToolAsync(convo.Id, "get_current_time", "{}", "{\"now\":\"2026-06-11T00:00:00Z\"}", default);
+
+        var turns = await db.Turns
+            .Where(t => t.ConversationId == convo.Id)
+            .OrderBy(t => t.Index)
+            .ToListAsync();
+
+        turns.Should().HaveCount(3);
+        turns.Select(t => t.Index).Should().Equal(0, 1, 2);
+        turns.Select(t => t.Role).Should().Equal(TurnRole.User, TurnRole.Assistant, TurnRole.Tool);
+        turns[0].Text.Should().Be("hi");
+        turns[1].Text.Should().Be("hello there");
+        turns[2].ToolName.Should().Be("get_current_time");
+    }
+
+    [Fact]
+    public async Task End_sets_ended_at_and_reason()
+    {
+        var (db, log, deviceId) = await ArrangeAsync();
+        var convo = await log.StartAsync(deviceId, default);
+
+        await log.EndAsync(convo.Id, EndReason.Idle, default);
+
+        var row = await db.Conversations.FirstAsync(c => c.Id == convo.Id);
+        row.EndedAt.Should().NotBeNull();
+        row.EndReason.Should().Be(EndReason.Idle);
+    }
+}