test(adm-009): IngresosBrutos handler tests mirror (Red)

tests/SIGCM2.Application.Tests/IngresosBrutos/Create/CreateIngresosBrutosCommandHandlerTests.cs

@@ -0,0 +1,86 @@
+using NSubstitute;
+using SIGCM2.Application.Abstractions.Persistence;
+using SIGCM2.Application.Audit;
+using SIGCM2.Application.IngresosBrutos.Create;
+using SIGCM2.Domain.Fiscal;
+using IibbEntity = SIGCM2.Domain.Entities.IngresosBrutos;
+
+namespace SIGCM2.Application.Tests.IngresosBrutos.Create;
+
+public class CreateIngresosBrutosCommandHandlerTests
+{
+    private readonly IIngresosBrutosRepository _repo = Substitute.For<IIngresosBrutosRepository>();
+    private readonly IAuditLogger _audit = Substitute.For<IAuditLogger>();
+    private readonly CreateIngresosBrutosCommandHandler _handler;
+
+    private static CreateIngresosBrutosCommand ValidCommand() => new(
+        Provincia: ProvinciaArgentina.BuenosAires,
+        Descripcion: "IIBB Buenos Aires",
+        Alicuota: 3.5m,
+        VigenciaDesde: new DateOnly(2024, 1, 1));
+
+    public CreateIngresosBrutosCommandHandlerTests()
+    {
+        _handler = new CreateIngresosBrutosCommandHandler(_repo, _audit);
+        _repo.InsertAsync(Arg.Any<IibbEntity>(), Arg.Any<CancellationToken>()).Returns(55);
+    }
+
+    [Fact]
+    public async Task Handle_HappyPath_ReturnsDtoWithIdFromRepository()
+    {
+        var result = await _handler.Handle(ValidCommand());
+
+        Assert.Equal(55, result.Id);
+    }
+
+    [Fact]
+    public async Task Handle_HappyPath_DtoContainsCorrectFields()
+    {
+        var result = await _handler.Handle(ValidCommand());
+
+        Assert.Equal(ProvinciaArgentina.BuenosAires, result.Provincia);
+        Assert.Equal(3.5m, result.Alicuota);
+        Assert.True(result.Activo);
+    }
+
+    [Fact]
+    public async Task Handle_HappyPath_CallsAuditWithCreateAction()
+    {
+        await _handler.Handle(ValidCommand());
+
+        await _audit.Received(1).LogAsync(
+            action: "ingresos_brutos.create",
+            targetType: "IngresosBrutos",
+            targetId: "55",
+            metadata: Arg.Any<object?>(),
+            ct: Arg.Any<CancellationToken>());
+    }
+
+    [Fact]
+    public async Task Handle_AuditLoggerThrows_ExceptionBubblesUp()
+    {
+        _audit.LogAsync(Arg.Any<string>(), Arg.Any<string>(), Arg.Any<string>(),
+                        Arg.Any<object?>(), Arg.Any<CancellationToken>())
+              .Returns(Task.FromException(new InvalidOperationException("audit fail")));
+
+        await Assert.ThrowsAsync<InvalidOperationException>(
+            () => _handler.Handle(ValidCommand()));
+    }
+
+    // ── triangulation: zero alicuota ─────────────────────────────────────────
+
+    [Fact]
+    public async Task Handle_WithZeroAlicuota_ReturnsDtoWithCorrectAlicuota()
+    {
+        var cmd = new CreateIngresosBrutosCommand(
+            Provincia: ProvinciaArgentina.CiudadAutonomaDeBuenosAires,
+            Descripcion: "IIBB CABA",
+            Alicuota: 0m,
+            VigenciaDesde: new DateOnly(2024, 1, 1));
+
+        var result = await _handler.Handle(cmd);
+
+        Assert.Equal(0m, result.Alicuota);
+        Assert.Equal(ProvinciaArgentina.CiudadAutonomaDeBuenosAires, result.Provincia);
+    }
+}