UI Improvements: Planungsdialog, Fehlzeitendarstellung, Vorauswahl der Einheit

LehrerApp.Desktop.Tests/ClassTeacherViewModelsTests.cs

@@ -8,6 +8,37 @@ namespace LehrerApp.Desktop.Tests;
 
 public sealed class ClassTeacherViewModelsTests
 {
+    [Fact]
+    public void Monatskalender_KodiertFehlzeitenUndBlendetHausaufgabenStandardmaessigAus()
+    {
+        var month = new DateOnly(2026, 9, 1);
+        var absences = new[]
+        {
+            new ClassAbsenceDaySummaryRow(new DateOnly(2026, 9, 2), "Müller Ada", 1, 0, 12,
+                ["Deu"], [1], ["entsch."], ["Verspätung"], null, null, false),
+            new ClassAbsenceDaySummaryRow(new DateOnly(2026, 9, 3), "Schmidt Ben", 2, 2, 90,
+                ["Mathe"], [1, 2], ["nicht entsch."], ["Absent"], null, null, false),
+        };
+        var register = new[]
+        {
+            new ClassTeacherClassRegisterRow(new DateOnly(2026, 9, 3), "Deu", "Schmidt Ben", "test",
+                "Störung", "Negativ", "Unterricht massiv gestört"),
+            new ClassTeacherClassRegisterRow(new DateOnly(2026, 9, 4), "Mathe", "Müller Ada", "test",
+                "Hausaufgaben", "Negativ", "Hausaufgaben fehlen"),
+        };
+
+        var days = ClassTeacherDetailsViewModel.BuildCalendarDays(month, absences, register, includeHomework: false);
+
+        Assert.Equal(0, days.Count % 5);
+        Assert.Contains(days.SelectMany(d => d.Events), e => e.Code == "V");
+        Assert.Contains(days.SelectMany(d => d.Events), e => e.Code == "U");
+        Assert.Contains(days.SelectMany(d => d.Events), e => e.Code == "!");
+        Assert.DoesNotContain(days.SelectMany(d => d.Events), e => e.Code == "H");
+
+        var withHomework = ClassTeacherDetailsViewModel.BuildCalendarDays(month, absences, register, includeHomework: true);
+        Assert.Contains(withHomework.SelectMany(d => d.Events), e => e.Code == "H");
+    }
+
     [Fact]
     public void GroupByStudentAndDay_FasstFehlstundenProSchuelerUndTagZusammen()
     {

LehrerApp.Desktop.Tests/PlanningTabViewModelTests.cs

@@ -45,6 +45,21 @@ public class PlanningTabViewModelTests
         Assert.Contains("2 / 3", summary.ProgressText);
     }
 
+    [Fact]
+    public void Initialize_WaehltLaufendeEinheitAlsArbeitskontext()
+    {
+        var (vm, units, _, groupId) = BuildScenario();
+        units.Add(new Unit { GroupId = groupId, Title = "Früher", Status = UnitStatus.Completed,
+            StartDate = new DateOnly(2025, 8, 1) });
+        var active = new Unit { GroupId = groupId, Title = "Aktuell", Status = UnitStatus.Active,
+            StartDate = new DateOnly(2025, 9, 1) };
+        units.Add(active);
+
+        vm.Initialize(groupId);
+
+        Assert.Equal(active.Id, vm.SelectedUnit?.Id);
+    }
+
     [Fact]
     public async Task MoveLesson_MitNachrueckenVerschiebtNurGeplanteFolgestundenNachDemStichtag()
     {

LehrerApp.Desktop.Tests/UnitDialogViewModelTests.cs

@@ -25,4 +25,28 @@ public sealed class UnitDialogViewModelTests
 
         Assert.Equal("10c · kein Fach hinterlegt (siehe Lerngruppe)", vm.GroupSubjectDisplay);
     }
+
+    [Fact]
+    public void Laufend_SetztBisherigeLaufendeEinheitAufAbgeschlossenUndWarntVorher()
+    {
+        var groupId = Guid.NewGuid();
+        var units = new FakeUnits();
+        var previous = new LehrerApp.Core.Models.Unit
+        {
+            GroupId = groupId, Title = "Bruchrechnung", Status = LehrerApp.Core.Models.UnitStatus.Active,
+        };
+        units.Add(previous);
+        var vm = new UnitDialogViewModel(units, new FakeCompetencyDomains(),
+            groupId, null, 6, "6a", "Mathematik", editingUnit: null)
+        {
+            Title = "Prozentrechnung",
+            StatusName = "Laufend",
+        };
+
+        Assert.Contains("Bruchrechnung", vm.StatusNotice);
+        vm.SaveCommand.Execute(null);
+
+        Assert.Equal(LehrerApp.Core.Models.UnitStatus.Completed, previous.Status);
+        Assert.Single(units.GetByGroup(groupId), u => u.Status == LehrerApp.Core.Models.UnitStatus.Active);
+    }
 }