feat(ui): constrain decimal input and add stacked timed toasts with uniform actions

tests/Duempelkas.Tests/BookingFormTests.cs

@@ -15,6 +15,7 @@ public class BookingFormTests
     public void Form_ExplainsMissingFields_AndDoesNotRoundInvalidInput()
     {
         using var context = new BunitContext();
+        context.Services.AddSingleton<ToastService>();
         context.Services.AddSingleton<IEntryService>(new EntryService(null!));
         var dialog = context.Render<AddEntryDialog>(p => p.Add(x => x.AccountName, "Barkasse"));
         Assert.Contains("Barkasse", dialog.Find("h5").TextContent);
@@ -22,7 +23,7 @@ public class BookingFormTests
         Assert.True(dialog.Find("button.btn-success").HasAttribute("disabled"));
         dialog.Find("#entry-title").Input("Porto");
         dialog.Find("#entry-amount").Input("12,501");
-        Assert.Equal("12,501", dialog.Find("#entry-amount").GetAttribute("value"));
+        Assert.Equal("", dialog.Find("#entry-amount").GetAttribute("value"));
         Assert.True(dialog.Find("button.btn-success").HasAttribute("disabled"));
         dialog.Find("#entry-amount").Input("-12,50");
         Assert.True(dialog.Find("button.btn-success").HasAttribute("disabled"));
@@ -39,6 +40,7 @@ public class BookingFormTests
     public void Edit_ShowsFixedTypeAndCorrectionPath_AndRerenderKeepsInput()
     {
         using var context = new BunitContext();
+        context.Services.AddSingleton<ToastService>();
         context.Services.AddSingleton<IEntryService>(new EntryService(null!));
         var entry = new EntryDto(1, 1, "2026-001", EntryType.Expense, new(2026, 1, 1), "Porto", 4.20m, false, false, null, null, null);
         var dialog = context.Render<AddEntryDialog>(p => p.Add(x => x.EditEntry, entry));

tests/Duempelkas.Tests/BookingSaveTests.cs

@@ -37,7 +37,7 @@ public class BookingSaveTests
         Assert.Equal(1, fixture.Entries.WriteCalls);
         delayed.SetResult();
         await pending;
-        page.WaitForAssertion(() => Assert.Contains("gespeichert", page.Find(".alert-success").TextContent));
+        page.WaitForAssertion(() => Assert.Contains("gespeichert", page.Find(".toast-success").TextContent));
         Assert.Single(await fixture.Entries.GetEntriesAsync(1, (int?)null));
         Assert.Single(page.FindAll("tr.entry-recent"));
         if (transfer) Assert.Single(await fixture.Entries.GetEntriesAsync(2, (int?)null));
@@ -62,7 +62,7 @@ public class BookingSaveTests
         fixture.Entries.BeforeWrite = () => Task.FromException(new IOException("Simulierter Speicherfehler"));
         await page.Find("form").TriggerEventAsync("onsubmit", EventArgs.Empty);
         Assert.Contains("Eingaben bleiben erhalten", page.Markup);
-        Assert.Empty(page.FindAll(".alert-success"));
+        Assert.Empty(page.FindAll(".toast-success"));
         Assert.Equal("Testbuchung", page.Find(transfer ? "#transfer-title" : "#entry-title").GetAttribute("value"));
         Assert.Equal("12,50", page.Find(transfer ? "#transfer-amount" : "#entry-amount").GetAttribute("value"));
         Assert.Empty(await fixture.Entries.GetEntriesAsync(1, (int?)null));
@@ -86,7 +86,7 @@ public class BookingSaveTests
         dialog.Find("#entry-title").Input("Testbuchung");
         dialog.Find("#entry-amount").Input("12,50");
         await dialog.Find("form").TriggerEventAsync("onsubmit", EventArgs.Empty);
-        Assert.Contains("Die Buchung ist gespeichert", dialog.Markup);
+        Assert.Contains(fixture.Context.Services.GetRequiredService<ToastService>().Messages, t => t.Message.Contains("Die Buchung ist gespeichert"));
         await dialog.Find("form").TriggerEventAsync("onsubmit", EventArgs.Empty);
         Assert.Equal(1, fixture.Entries.WriteCalls);
         Assert.Equal(2, notifications);

tests/Duempelkas.Tests/ToastTests.cs

@@ -0,0 +1,43 @@
+using Bunit;
+using Duempelkas.App.Components;
+using Duempelkas.App.Services;
+using Microsoft.Extensions.DependencyInjection;
+using Xunit;
+
+namespace Duempelkas.Tests;
+
+public class ToastTests
+{
+    [Fact]
+    public async Task ToastsStack_ExpireIndependently_AndPauseDuringInteraction()
+    {
+        using var context = new BunitContext();
+        context.Services.AddSingleton<ToastService>();
+        var host = context.Render<ToastHost>();
+        var service = context.Services.GetRequiredService<ToastService>();
+        var first = service.Show("Erste Meldung", duration: TimeSpan.FromMilliseconds(100));
+        service.Pause(first);
+        service.Show("Zweite Meldung", ToastKind.Success, persistent: true);
+        host.WaitForAssertion(() => Assert.Equal(2, host.FindAll(".app-toast").Count));
+        await Task.Delay(200);
+        Assert.Equal(2, service.Messages.Count);
+        service.Resume(first);
+        host.WaitForAssertion(() => Assert.Single(host.FindAll(".app-toast")));
+        Assert.Contains("Zweite Meldung", host.Markup);
+        host.Find(".toast-close").Click();
+        Assert.Empty(service.Messages);
+    }
+
+    [Fact]
+    public void AmountControl_RejectsWholePasteWithoutRounding()
+    {
+        using var context = new BunitContext();
+        string amount = "12,50";
+        var control = context.Render<AmountInput>(p => p.Add(x => x.Value, amount).Add(x => x.ValueChanged, value => amount = value));
+        control.Find("input").Input("12,501");
+        Assert.Equal("12,50", amount);
+        Assert.Contains("nicht übernommen", control.Markup);
+        control.Find("input").Input("12.25");
+        Assert.Equal("12.25", amount);
+    }
+}