feat(application): repository abstraction + DTOs + validators + handlers CRUD PuntosDeVenta con auditoría + retry deadlock

tests/SIGCM2.Application.Tests/PuntosDeVenta/ProximoNumero/GetProximoNumeroQueryHandlerTests.cs

@@ -0,0 +1,52 @@
+using NSubstitute;
+using SIGCM2.Application.Abstractions.Persistence;
+using SIGCM2.Application.PuntosDeVenta.ProximoNumero;
+using SIGCM2.Domain.Enums;
+
+namespace SIGCM2.Application.Tests.PuntosDeVenta.ProximoNumero;
+
+public class GetProximoNumeroQueryHandlerTests
+{
+    private readonly IPuntoDeVentaRepository _repo = Substitute.For<IPuntoDeVentaRepository>();
+    private readonly GetProximoNumeroQueryHandler _handler;
+
+    public GetProximoNumeroQueryHandlerTests()
+    {
+        _handler = new GetProximoNumeroQueryHandler(_repo);
+    }
+
+    [Fact]
+    public async Task Handle_ExistingSequence_ReturnsUltimoNumeroMasUno()
+    {
+        _repo.GetUltimoNumeroAsync(10, TipoComprobante.FacturaA, Arg.Any<CancellationToken>())
+             .Returns(7);
+
+        var result = await _handler.Handle(new GetProximoNumeroQuery(10, TipoComprobante.FacturaA));
+
+        Assert.Equal(TipoComprobante.FacturaA, result.TipoComprobante);
+        Assert.Equal(8, result.ProximoNumero);
+    }
+
+    [Fact]
+    public async Task Handle_NoExistingSequence_ReturnsOne()
+    {
+        _repo.GetUltimoNumeroAsync(10, TipoComprobante.FacturaB, Arg.Any<CancellationToken>())
+             .Returns((int?)null);
+
+        var result = await _handler.Handle(new GetProximoNumeroQuery(10, TipoComprobante.FacturaB));
+
+        Assert.Equal(1, result.ProximoNumero);
+    }
+
+    [Fact]
+    public async Task Handle_DoesNotCallReservarNumero()
+    {
+        _repo.GetUltimoNumeroAsync(10, TipoComprobante.FacturaA, Arg.Any<CancellationToken>())
+             .Returns(5);
+
+        await _handler.Handle(new GetProximoNumeroQuery(10, TipoComprobante.FacturaA));
+
+        await _repo.DidNotReceive().ReservarNumeroAsync(
+            Arg.Any<int>(), Arg.Any<TipoComprobante>(), Arg.Any<CancellationToken>());
+    }
+}