feat(ui): add MissionControlViewModel

tests/ClaudeDo.Ui.Tests/ViewModels/MissionControlViewModelTests.cs

@@ -0,0 +1,117 @@
+using ClaudeDo.Data;
+using ClaudeDo.Ui.Services;
+using ClaudeDo.Ui.ViewModels;
+using Microsoft.EntityFrameworkCore;
+using Xunit;
+
+namespace ClaudeDo.Ui.Tests.ViewModels;
+
+public class MissionControlViewModelTests : IDisposable
+{
+    private readonly string _dbPath;
+
+    public MissionControlViewModelTests()
+    {
+        _dbPath = Path.Combine(Path.GetTempPath(), $"claudedo_mc_test_{Guid.NewGuid():N}.db");
+        using var ctx = NewContext();
+        ctx.Database.EnsureCreated();
+    }
+
+    public void Dispose()
+    {
+        try { File.Delete(_dbPath); } catch { }
+        try { File.Delete(_dbPath + "-wal"); } catch { }
+        try { File.Delete(_dbPath + "-shm"); } catch { }
+    }
+
+    private ClaudeDoDbContext NewContext()
+    {
+        var opts = new DbContextOptionsBuilder<ClaudeDoDbContext>()
+            .UseSqlite($"Data Source={_dbPath}")
+            .Options;
+        return new ClaudeDoDbContext(opts);
+    }
+
+    private sealed class TestDbFactory : IDbContextFactory<ClaudeDoDbContext>
+    {
+        private readonly Func<ClaudeDoDbContext> _create;
+        public TestDbFactory(Func<ClaudeDoDbContext> create) => _create = create;
+        public ClaudeDoDbContext CreateDbContext() => _create();
+    }
+
+    private sealed class FakeWorker : StubWorkerClient { }
+
+    private MissionControlViewModel BuildVm(StubWorkerClient worker)
+        => new MissionControlViewModel(new TestDbFactory(NewContext), worker);
+
+    [Fact]
+    public void TwoStarts_CreateTwoMonitors_ColumnCountTwo()
+    {
+        var worker = new FakeWorker();
+        using var vm = BuildVm(worker);
+
+        worker.RaiseTaskStarted("slot-1", "t1", DateTime.UtcNow);
+        worker.RaiseTaskStarted("slot-2", "t2", DateTime.UtcNow);
+
+        Assert.Equal(2, vm.Monitors.Count);
+        Assert.Equal(2, vm.ColumnCount);
+    }
+
+    [Fact]
+    public void DuplicateStart_DoesNotAddSecondMonitor()
+    {
+        var worker = new FakeWorker();
+        using var vm = BuildVm(worker);
+
+        worker.RaiseTaskStarted("slot-1", "t1", DateTime.UtcNow);
+        worker.RaiseTaskStarted("slot-1", "t1", DateTime.UtcNow);
+
+        Assert.Equal(1, vm.Monitors.Count);
+    }
+
+    [Fact]
+    public void Finish_KeepsPane_AndFlipsState()
+    {
+        var worker = new FakeWorker();
+        using var vm = BuildVm(worker);
+
+        worker.RaiseTaskStarted("slot-1", "t1", DateTime.UtcNow);
+        worker.RaiseTaskFinished("slot-1", "t1", "done", DateTime.UtcNow);
+
+        Assert.Equal(1, vm.Monitors.Count);
+        Assert.True(vm.Monitors[0].IsDone);
+    }
+
+    [Fact]
+    public void ClearFinished_RemovesTerminalMonitors()
+    {
+        var worker = new FakeWorker();
+        using var vm = BuildVm(worker);
+
+        worker.RaiseTaskStarted("slot-1", "t1", DateTime.UtcNow);
+        worker.RaiseTaskStarted("slot-2", "t2", DateTime.UtcNow);
+        worker.RaiseTaskFinished("slot-1", "t1", "done", DateTime.UtcNow);
+
+        vm.ClearFinishedCommand.Execute(null);
+
+        Assert.Equal(1, vm.Monitors.Count);
+        Assert.Equal("t2", vm.Monitors[0].SubscribedTaskId);
+        Assert.Equal(1, vm.ColumnCount);
+    }
+
+    [Fact]
+    public void SeedsFromActiveTasksOnConstruction()
+    {
+        var worker = new SeededFakeWorker();
+        using var vm = BuildVm(worker);
+
+        Assert.Equal(1, vm.Monitors.Count);
+        Assert.Equal("seed1", vm.Monitors[0].SubscribedTaskId);
+    }
+
+    private sealed class SeededFakeWorker : StubWorkerClient
+    {
+        public override IReadOnlyList<ActiveTask> GetActiveTasks()
+            => new[] { new ActiveTask("slot-1", "seed1", DateTime.UtcNow) };
+    }
+}