Stundenplan verbesserung

LehrerApp.Desktop.Tests/LessonSchedulingServiceTests.cs

@@ -0,0 +1,90 @@
+using LehrerApp.Core.Models;
+using LehrerApp.Core.Services;
+using LehrerApp.Desktop.ViewModels.Planning;
+using Xunit;
+
+namespace LehrerApp.Desktop.Tests;
+
+public sealed class LessonSchedulingServiceTests
+{
+    [Fact]
+    public void UnitPicker_SchlaegtLaufendeEinheitVor_UndSpeichertNeuanlageNochNicht()
+    {
+        var groupId = Guid.NewGuid();
+        var planned = new Unit { GroupId = groupId, Title = "Später", Status = UnitStatus.Planned };
+        var active = new Unit { GroupId = groupId, Title = "Aktuell", Status = UnitStatus.Active };
+        var repo = new FakeUnits();
+        repo.Add(planned); repo.Add(active);
+        var vm = new TimetableUnitPickerViewModel(repo, groupId, "10c", new(2026, 9, 2), 3);
+
+        Assert.Equal(active.Id, vm.SelectedUnit?.Model.Id);
+        vm.NewUnitTitle = "Neue Reihe";
+        vm.SaveCommand.Execute(null);
+
+        Assert.True(vm.ResultIsNew);
+        Assert.Equal("Neue Reihe", vm.Result?.Title);
+        Assert.Null(repo.GetById(vm.Result!.Id));
+    }
+
+    [Fact]
+    public void Move_AendertDatumUndStunde_UndRuecktNurNichtDurchgefuehrteFolgestundenNach()
+    {
+        var unitId = Guid.NewGuid();
+        var groupId = Guid.NewGuid();
+        var moved = new Lesson { UnitId = unitId, GroupId = groupId, Date = new(2026, 9, 1), LessonNumber = 2 };
+        var draftFollowing = new Lesson { UnitId = unitId, GroupId = groupId, Date = new(2026, 9, 3), Status = LessonStatus.Draft };
+        var conducted = new Lesson { UnitId = unitId, GroupId = groupId, Date = new(2026, 9, 4), Status = LessonStatus.Conducted };
+        var repo = new FakeLessons();
+        repo.Add(moved); repo.Add(draftFollowing); repo.Add(conducted);
+
+        new LessonSchedulingService(repo).Move(moved, new(2026, 9, 8), 5, shiftFollowing: true);
+
+        Assert.Equal(new DateOnly(2026, 9, 8), moved.Date);
+        Assert.Equal(5, moved.LessonNumber);
+        Assert.Equal(new DateOnly(2026, 9, 10), draftFollowing.Date);
+        Assert.Equal(new DateOnly(2026, 9, 4), conducted.Date);
+    }
+
+    [Fact]
+    public void SplitAndMoveSecondPart_TeiltAuchEineUeberDieGrenzeLaufendePhase()
+    {
+        var source = new Lesson
+        {
+            UnitId = Guid.NewGuid(), GroupId = Guid.NewGuid(), Date = new(2026, 9, 1),
+            LessonNumber = 3, Topic = "Fotosynthese", Homework = "Aufgabe 2",
+            Phases =
+            [
+                new LessonPhaseStep { Name = "Einstieg", DurationMinutes = 30 },
+                new LessonPhaseStep { Name = "Experiment", DurationMinutes = 30 },
+                new LessonPhaseStep { Name = "Sicherung", DurationMinutes = 20 },
+            ],
+        };
+        var repo = new FakeLessons();
+        repo.Add(source);
+
+        var continuation = new LessonSchedulingService(repo).SplitAndMoveSecondPart(source, 45,
+            new(2026, 9, 3), 6, new TimeOnly(12, 15));
+
+        Assert.Equal([30, 15], source.Phases.Select(p => p.DurationMinutes));
+        Assert.Equal([15, 20], continuation.Phases.Select(p => p.DurationMinutes));
+        Assert.Equal("Fotosynthese – Fortsetzung", continuation.Topic);
+        Assert.Null(source.Homework);
+        Assert.Equal("Aufgabe 2", continuation.Homework);
+        Assert.Equal(6, continuation.LessonNumber);
+    }
+
+    [Fact]
+    public void Move_LehntBelegtenZielterminAb()
+    {
+        var groupId = Guid.NewGuid();
+        var source = new Lesson { GroupId = groupId, Date = new(2026, 9, 1), LessonNumber = 1 };
+        var occupied = new Lesson { GroupId = groupId, Date = new(2026, 9, 2), LessonNumber = 4 };
+        var repo = new FakeLessons();
+        repo.Add(source); repo.Add(occupied);
+
+        var error = Assert.Throws<InvalidOperationException>(() =>
+            new LessonSchedulingService(repo).Move(source, occupied.Date, 4, false));
+
+        Assert.Contains("bereits eine Planung", error.Message);
+    }
+}

LehrerApp.Desktop.Tests/TimetableViewModelTests.cs

@@ -277,7 +277,23 @@ public sealed class TimetableViewModelTests
 
         Assert.Equal(group.Id, navigatedTo);
         Assert.False(viewerOpened);
-        Assert.Equal("Zur Lerngruppe", vm.TodayItems[0].OpenButtonLabel);
+        Assert.Equal("Stunde anlegen", vm.TodayItems[0].OpenButtonLabel);
+    }
+
+    [Fact]
+    public async Task OpenTodayLesson_OhneLesson_StartetDirektanlageMitExaktemTermin()
+    {
+        var today = DateOnly.FromDateTime(DateTime.Today);
+        var group = new LearningGroup { Name = "Q1 Chemie" };
+        var slots = new FakeTimetableSlots();
+        slots.Add(new TimetableSlot { GroupId = group.Id, Weekday = today.DayOfWeek, PeriodNumber = 4 });
+        var vm = BuildViewModel(slots, new FakeGroups([group]));
+        TimetableLessonRequest? requested = null;
+        vm.OnCreateLesson = request => { requested = request; return Task.CompletedTask; };
+
+        await vm.OpenTodayLessonCommand.ExecuteAsync(vm.TodayItems[0]);
+
+        Assert.Equal(new TimetableLessonRequest(group.Id, today, 4), requested);
     }
 
     // ── Unterrichtsmodus (14.x) ────────────────────────────────────────────────