fix(tests): consolidar V016 en SqlTestFixture post issue #29

Rebase de CAT-001 sobre main (post #29) requiere:
- EnsureV016SchemaAsync en SqlTestFixture
- Rubro_History en TablesToIgnore central (el commit original b1be4a5 se skipeo por ser obsoleto post consolidacion)
- catalogo:rubros:gestionar en seed canonical de Permiso + RolPermiso admin
- RubroRepositoryTests refactorizado al patron [Collection] + SqlTestFixture
- RubrosControllerTests apunta a TestConnectionStrings.ApiTestDb
- Counts de permisos admin actualizados 24 -> 25 en 5 tests

Verify: App 819/819 + Api 251/251 + vitest 349/349 verde post-rebase.

database/README.md

@@ -40,23 +40,24 @@ database/
 - **Idempotentes**: cada migración usa `IF NOT EXISTS` / `MERGE` / `IF NOT EXISTS (SELECT 1 FROM sys....)`. Re-ejecutarlas es seguro.
 - **Boilerplate** inicial: `SET QUOTED_IDENTIFIER ON; SET ANSI_NULLS ON; SET NOCOUNT ON; GO`.
 - **Naming**: `PK_*`, `UQ_*`, `FK_*`, `DF_*`, `CK_*`, `IX_*`.
-- **Se aplican a AMBAS bases**: `SIGCM2` (dev) y `SIGCM2_Test` (integration tests). El orden debe ser idéntico.
+- **Se aplican a TRES bases**: `SIGCM2` (dev), `SIGCM2_Test_App` (Application.Tests) y `SIGCM2_Test_Api` (Api.Tests). El orden debe ser idéntico en las tres.
 
 ## Cómo aplicar migraciones
 
 ### En dev (manual)
 
 ```bash
-# Con sqlcmd:
+# Con sqlcmd (aplicar a las tres bases en orden):
 sqlcmd -S TECNICA3 -d SIGCM2           -U desarrollo -P desarrollo2026 -i database/migrations/V010__audit_infrastructure.sql
-sqlcmd -S TECNICA3 -d SIGCM2_Test -U desarrollo -P desarrollo2026 -i database/migrations/V010__audit_infrastructure.sql
+sqlcmd -S TECNICA3 -d SIGCM2_Test_App  -U desarrollo -P desarrollo2026 -i database/migrations/V010__audit_infrastructure.sql
+sqlcmd -S TECNICA3 -d SIGCM2_Test_Api  -U desarrollo -P desarrollo2026 -i database/migrations/V010__audit_infrastructure.sql
 ```
 
 O desde SSMS: abrir el archivo, conectar a cada base, F5.
 
 ### En integration tests
 
-`tests/SIGCM2.TestSupport/SqlTestFixture.cs` aplica automáticamente el schema necesario en `SIGCM2_Test` al inicializar el fixture (`EnsureV008SchemaAsync`, `EnsureV009SchemaAsync`, `EnsureV010SchemaAsync`…). **NO** hace falta correr el script manualmente.
+`tests/SIGCM2.TestSupport/SqlTestFixture.cs` aplica automáticamente el schema necesario en `SIGCM2_Test_App` al inicializar el fixture (`EnsureV008SchemaAsync`, `EnsureV009SchemaAsync`, `EnsureV010SchemaAsync`…). `TestWebAppFactory` hace lo mismo contra `SIGCM2_Test_Api`. **NO** hace falta correr los scripts manualmente si el fixture ya lo cubre.
 
 ### En producción (roadmap futuro)
 
@@ -94,6 +95,22 @@ O desde SSMS: abrir el archivo, conectar a cada base, F5.
 - `Seccion.Tipo` acepta `'clasificados' | 'notables' | 'suplementos'` (CHECK constraint). Config avanzada (par/impar, suplementos, cupos) se introduce en ADM-003.
 - Rollback: `V012_ROLLBACK.sql` (falla si hay Secciones vivas) → `V011_ROLLBACK.sql`. Rollback en prod NO soportado si ADM-008/009 o PRC-* ya aplicados.
 
+## Bases de datos de integration tests
+
+| Base | Propósito | Usada por |
+|---|---|---|
+| `SIGCM2_Test_App` | Tests de repositorios y Application layer | `SIGCM2.Application.Tests` vía `SqlTestFixture` (parameterless ctor) |
+| `SIGCM2_Test_Api` | Tests de endpoints HTTP / WebApplicationFactory | `SIGCM2.Api.Tests` vía `TestWebAppFactory` |
+
+**Script de creación inicial** (idempotente): `database/init/create-test-api-db.sql`
+
+Ambas bases deben tener **todas las migraciones V001–V015** aplicadas en orden. Al crear una base nueva o al agregar un desarrollador:
+1. Crear las bases con `create-test-api-db.sql`
+2. Aplicar V001–V015 en orden (ver tabla de arriba) contra cada base de test
+3. Las `EnsureV0XX` del fixture validan presencia; no aplican migraciones pesadas
+
+Fuente única de connection strings: `tests/SIGCM2.TestSupport/TestConnectionStrings.cs`
+
 ## Recursos
 
 - Design autoritativo: `Obsidian/02-ARQUITECTURA-y-TECH-STACK/2.5 📋 Auditoría.md`

database/init/create-test-api-db.sql

@@ -0,0 +1,30 @@
+-- create-test-api-db.sql
+-- Creates test databases for integration tests (idempotent).
+-- Run once per environment on TECNICA3 before executing integration tests.
+--
+-- SIGCM2_Test_App  -> used by SIGCM2.Application.Tests
+-- SIGCM2_Test_Api  -> used by SIGCM2.Api.Tests
+-- SIGCM2_Test      -> legacy (kept for old branches e.g. pre-merge CAT-001)
+--
+-- After creating the DBs, apply V010 to both new DBs:
+--   See database/README.md > "Test DBs" section for the PowerShell runbook.
+
+IF DB_ID(N'SIGCM2_Test_App') IS NULL
+BEGIN
+    CREATE DATABASE [SIGCM2_Test_App]
+        COLLATE Modern_Spanish_CI_AS;
+    PRINT 'Database SIGCM2_Test_App created.';
+END
+ELSE
+    PRINT 'Database SIGCM2_Test_App already exists -- skip.';
+GO
+
+IF DB_ID(N'SIGCM2_Test_Api') IS NULL
+BEGIN
+    CREATE DATABASE [SIGCM2_Test_Api]
+        COLLATE Modern_Spanish_CI_AS;
+    PRINT 'Database SIGCM2_Test_Api created.';
+END
+ELSE
+    PRINT 'Database SIGCM2_Test_Api already exists -- skip.';
+GO

src/web/src/components/ui/badge.tsx

@@ -33,4 +33,5 @@ function Badge({ className, variant, ...props }: BadgeProps) {
   )
 }
 
+// eslint-disable-next-line react-refresh/only-export-components -- shadcn/ui generated: badgeVariants is intentionally co-located with the component
 export { Badge, badgeVariants }

src/web/src/components/ui/button.tsx

@@ -53,4 +53,5 @@ const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
 )
 Button.displayName = "Button"
 
+// eslint-disable-next-line react-refresh/only-export-components -- shadcn/ui generated: buttonVariants is intentionally co-located with the component
 export { Button, buttonVariants }

src/web/src/components/ui/form.tsx

@@ -165,6 +165,7 @@ const FormMessage = React.forwardRef<
 FormMessage.displayName = 'FormMessage'
 
 export {
+  // eslint-disable-next-line react-refresh/only-export-components -- shadcn/ui generated: useFormField hook is intentionally co-located with form components
   useFormField,
   Form,
   FormItem,

src/web/src/features/fiscal/iibb/components/IngresosBrutosFormModal.tsx

@@ -14,6 +14,7 @@ import { Alert, AlertDescription } from '@/components/ui/alert'
 import {
   Dialog,
   DialogContent,
+  DialogDescription,
   DialogHeader,
   DialogTitle,
   DialogFooter,
@@ -173,6 +174,11 @@ export function IngresosBrutosFormModal({
           <DialogTitle>
             {isEdit ? 'Editar Ingresos Brutos' : 'Crear Ingresos Brutos'}
           </DialogTitle>
+          <DialogDescription>
+            {isEdit
+              ? 'Modificá los datos de Ingresos Brutos. La alícuota no puede cambiarse aquí; usá "Nueva vigencia".'
+              : 'Completá los datos para crear un nuevo registro de Ingresos Brutos con su alícuota inicial.'}
+          </DialogDescription>
         </DialogHeader>
 
         <Form {...form}>

src/web/src/features/fiscal/iibb/components/NuevaVigenciaIibbModal.tsx

@@ -12,6 +12,7 @@ import { Alert, AlertDescription } from '@/components/ui/alert'
 import {
   Dialog,
   DialogContent,
+  DialogDescription,
   DialogHeader,
   DialogTitle,
   DialogFooter,
@@ -139,6 +140,9 @@ export function NuevaVigenciaIibbModal({
             <TriangleAlert className="h-5 w-5 text-warning" />
             Nueva vigencia — {item?.provinciaDisplay}
           </DialogTitle>
+          <DialogDescription>
+            Crea una nueva versión de Ingresos Brutos para esta provincia con una alícuota y fecha de vigencia nuevas. La versión actual quedará cerrada.
+          </DialogDescription>
         </DialogHeader>
 
         <div

src/web/src/features/fiscal/iva/components/NuevaVigenciaModal.tsx

@@ -13,6 +13,7 @@ import { Alert, AlertDescription } from '@/components/ui/alert'
 import {
   Dialog,
   DialogContent,
+  DialogDescription,
   DialogHeader,
   DialogTitle,
   DialogFooter,
@@ -140,6 +141,9 @@ export function NuevaVigenciaModal({
             <TriangleAlert className="h-5 w-5 text-warning" />
             Nueva vigencia — {item?.codigo}
           </DialogTitle>
+          <DialogDescription>
+            Crea una nueva versión del tipo de IVA con un porcentaje y fecha de vigencia nuevos. La versión actual quedará cerrada.
+          </DialogDescription>
         </DialogHeader>
 
         {/* Banner de advertencia — usa token --warning-bg */}

src/web/src/features/fiscal/iva/components/TipoDeIvaFormModal.tsx

@@ -14,6 +14,7 @@ import { Alert, AlertDescription } from '@/components/ui/alert'
 import {
   Dialog,
   DialogContent,
+  DialogDescription,
   DialogHeader,
   DialogTitle,
   DialogFooter,
@@ -180,6 +181,11 @@ export function TipoDeIvaFormModal({
           <DialogTitle>
             {isEdit ? 'Editar tipo de IVA' : 'Crear tipo de IVA'}
           </DialogTitle>
+          <DialogDescription>
+            {isEdit
+              ? 'Modificá los datos del tipo de IVA. El porcentaje no puede cambiarse aquí; usá "Nueva vigencia".'
+              : 'Completá los datos para crear un nuevo tipo de IVA con su alícuota inicial.'}
+          </DialogDescription>
         </DialogHeader>
 
         <Form {...form}>

src/web/src/features/permisos/components/RolPermisosEditor.tsx

@@ -33,6 +33,7 @@ export function RolPermisosEditor({ rolCodigo }: RolPermisosEditorProps) {
   // Prefill checkboxes cuando lleguen los permisos asignados al rol
   useEffect(() => {
     if (asignados) {
+      // eslint-disable-next-line react-hooks/set-state-in-effect -- sincroniza prop externa (asignados) con estado local; patrón válido de derived state
       setSelected(new Set(asignados.map((p) => p.codigo)))
       setSaved(false)
     }

src/web/src/features/users/components/PermisosEditor.tsx

@@ -59,6 +59,7 @@ export function PermisosEditor({ userId }: PermisosEditorProps) {
     for (const c of permisoData.overrides.grant) map.set(c, 'concedido')
     // Apply deny overrides
     for (const c of permisoData.overrides.deny) map.set(c, 'denegado')
+    // eslint-disable-next-line react-hooks/set-state-in-effect -- sincroniza prop externa (permisoData) con mapa local de overrides; patrón válido de derived state
     setStates(map)
     setSaveError(null)
   }, [permisoData])

src/web/src/features/users/pages/CreateUserPage.tsx

@@ -12,6 +12,7 @@ import type { CreatedUserDto } from '../api/createUser'
 export function CreateUserPage() {
   const navigate = useNavigate()
 
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars -- el callback recibe CreatedUserDto por contrato de UserForm pero solo necesitamos navegar
   function handleSuccess(_created: CreatedUserDto) {
     void navigate('/')
   }

src/web/src/lib/dateFormat.ts

@@ -25,6 +25,7 @@ interface FormatInstantOptions {
  */
 export function formatInstant(
     iso: string,
+    // eslint-disable-next-line @typescript-eslint/no-unused-vars -- parámetro reservado para futura extensibilidad; el formato está hardcodeado por compatibilidad con entornos donde Intl.DateTimeFormat ignora dateStyle/timeStyle
     _opts: FormatInstantOptions = { dateStyle: 'short', timeStyle: 'medium' }
 ): string {
     const parts = new Intl.DateTimeFormat('es-AR', {

src/web/src/pages/admin/audit/AuditFilters.tsx

@@ -13,6 +13,7 @@ export interface AuditFiltersValue {
   to: string
 }
 
+// eslint-disable-next-line react-refresh/only-export-components -- constante de reset co-ubicada con el componente que la consume como valor inicial
 export const EMPTY_FILTERS: AuditFiltersValue = {
   actor: '',
   targetType: '',
@@ -137,6 +138,7 @@ export function AuditFilters({
  *   Los convertimos a ISO UTC vía `parseArgentinaDateTimeToUtc()` (fix BUG-FE-05).
  * - Strings vacíos → omitidos.
  */
+// eslint-disable-next-line react-refresh/only-export-components -- función utilitaria de mapeo co-ubicada con el componente que la necesita; extraerla a otro archivo aumentaría la fragmentación innecesariamente
 export function toApiFilter(
   value: AuditFiltersValue,
 ): import('@/api/audit').AuditEventsFilter {

src/web/src/pages/admin/audit/AuditPage.tsx

@@ -67,6 +67,7 @@ export function AuditPage() {
   useEffect(() => {
     if (!data) return
     if (cursor === undefined) {
+      // eslint-disable-next-line react-hooks/set-state-in-effect -- acumula datos paginados de una query externa; reset en primera página es intencional
       setAccumulated(data.items)
     } else {
       setAccumulated((prev) => {

src/web/src/tests/api/axiosClient.test.ts

@@ -131,11 +131,8 @@ describe('axiosClient', () => {
       setAuth('expired-access', 'valid-refresh')
 
       let refreshCallCount = 0
-      let requestCount = 0
-
       server.use(
         http.get(`${API_URL}/api/v1/protected`, ({ request }) => {
-          requestCount++
           const auth = request.headers.get('Authorization')
           if (auth === 'Bearer new-access-from-refresh') {
             return HttpResponse.json({ data: 'ok' })

tests/SIGCM2.Api.Tests/Admin/FiscalControllerTests.cs

@@ -17,8 +17,7 @@ namespace SIGCM2.Api.Tests.Admin;
 [Collection("ApiIntegration")]
 public sealed class FiscalControllerTests : IAsyncLifetime
 {
-    private const string TestConnectionString =
+    private const string TestConnectionString = TestConnectionStrings.ApiTestDb;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
 
     private const string IvaEndpoint = "/api/v1/admin/fiscal/iva";
     private const string IibbEndpoint = "/api/v1/admin/fiscal/iibb";

tests/SIGCM2.Api.Tests/Admin/MediosControllerTests.cs

@@ -15,8 +15,7 @@ namespace SIGCM2.Api.Tests.Admin;
 [Collection("ApiIntegration")]
 public sealed class MediosControllerTests : IAsyncLifetime
 {
-    private const string TestConnectionString =
+    private const string TestConnectionString = TestConnectionStrings.ApiTestDb;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
 
     private const string Endpoint = "/api/v1/admin/medios";
     private const string AdminUsername = "admin";

tests/SIGCM2.Api.Tests/Admin/PuntosDeVentaControllerTests.cs

@@ -16,8 +16,7 @@ namespace SIGCM2.Api.Tests.Admin;
 [Collection("ApiIntegration")]
 public sealed class PuntosDeVentaControllerTests : IAsyncLifetime
 {
-    private const string TestConnectionString =
+    private const string TestConnectionString = TestConnectionStrings.ApiTestDb;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
 
     private const string Endpoint = "/api/v1/admin/puntos-de-venta";
     private const string MediosEndpoint = "/api/v1/admin/medios";

tests/SIGCM2.Api.Tests/Admin/SeccionesControllerTests.cs

@@ -15,8 +15,7 @@ namespace SIGCM2.Api.Tests.Admin;
 [Collection("ApiIntegration")]
 public sealed class SeccionesControllerTests : IAsyncLifetime
 {
-    private const string TestConnectionString =
+    private const string TestConnectionString = TestConnectionStrings.ApiTestDb;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
 
     private const string Endpoint = "/api/v1/admin/secciones";
     private const string MediosEndpoint = "/api/v1/admin/medios";

tests/SIGCM2.Api.Tests/Admin/V014MigrationTests.cs

@@ -21,8 +21,7 @@ namespace SIGCM2.Api.Tests.Admin;
 [Collection("ApiIntegration")]
 public sealed class V014MigrationTests : IClassFixture<SIGCM2.TestSupport.TestWebAppFactory>
 {
-    private const string ConnectionString =
+    private const string ConnectionString = TestConnectionStrings.ApiTestDb;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
 
     public V014MigrationTests(SIGCM2.TestSupport.TestWebAppFactory _)
     {

tests/SIGCM2.Api.Tests/Admin/V015MigrationTests.cs

@@ -21,8 +21,7 @@ namespace SIGCM2.Api.Tests.Admin;
 [Collection("ApiIntegration")]
 public sealed class V015MigrationTests : IClassFixture<SIGCM2.TestSupport.TestWebAppFactory>
 {
-    private const string ConnectionString =
+    private const string ConnectionString = TestConnectionStrings.ApiTestDb;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
 
     public V015MigrationTests(SIGCM2.TestSupport.TestWebAppFactory _)
     {

tests/SIGCM2.Api.Tests/Audit/AuditControllerTests.cs

@@ -18,8 +18,7 @@ namespace SIGCM2.Api.Tests.Audit;
 [Collection("ApiIntegration")]
 public sealed class AuditControllerTests : IClassFixture<TestWebAppFactory>
 {
-    private const string ConnectionString =
+    private const string ConnectionString = TestConnectionStrings.ApiTestDb;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
 
     private readonly TestWebAppFactory _factory;
 

tests/SIGCM2.Api.Tests/Audit/TransactionScopeSpikeTests.cs

@@ -12,8 +12,7 @@ namespace SIGCM2.Api.Tests.Audit;
 [Collection("ApiIntegration")]
 public sealed class TransactionScopeSpikeTests
 {
-    private const string ConnectionString =
+    private const string ConnectionString = TestConnectionStrings.ApiTestDb;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
 
     [Fact]
     public async Task TransactionScope_DoesNotEscalateToMSDTC_WithSingleConnectionString()

tests/SIGCM2.Api.Tests/Audit/V010MigrationTests.cs

@@ -13,8 +13,7 @@ namespace SIGCM2.Api.Tests.Audit;
 [Collection("ApiIntegration")]
 public sealed class V010MigrationTests : IClassFixture<SIGCM2.TestSupport.TestWebAppFactory>
 {
-    private const string ConnectionString =
+    private const string ConnectionString = TestConnectionStrings.ApiTestDb;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
 
     public V010MigrationTests(SIGCM2.TestSupport.TestWebAppFactory _)
     {

tests/SIGCM2.Api.Tests/Permisos/PermisosEndpointTests.cs

@@ -15,8 +15,7 @@ namespace SIGCM2.Api.Tests.Permisos;
 [Collection("ApiIntegration")]
 public sealed class PermisosEndpointTests : IAsyncLifetime
 {
-    private const string TestConnectionString =
+    private const string TestConnectionString = TestConnectionStrings.ApiTestDb;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
 
     private const string AdminUsername = "admin";
     private const string AdminPassword = "@Diego550@";

tests/SIGCM2.Api.Tests/Roles/RolesEndpointTests.cs

@@ -14,8 +14,7 @@ namespace SIGCM2.Api.Tests.Roles;
 [Collection("ApiIntegration")]
 public sealed class RolesEndpointTests : IAsyncLifetime
 {
-    private const string TestConnectionString =
+    private const string TestConnectionString = TestConnectionStrings.ApiTestDb;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
 
     private const string Endpoint = "/api/v1/roles";
     private const string AdminUsername = "admin";

tests/SIGCM2.Api.Tests/Rubros/RubrosControllerTests.cs

@@ -17,8 +17,7 @@ namespace SIGCM2.Api.Tests.Rubros;
 [Collection("ApiIntegration")]
 public sealed class RubrosControllerTests : IAsyncLifetime
 {
-    private const string TestConnectionString =
+    private const string TestConnectionString = TestConnectionStrings.ApiTestDb;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
 
     private const string ReadEndpoint = "/api/v1/rubros";
     private const string AdminEndpoint = "/api/v1/admin/rubros";

tests/SIGCM2.Api.Tests/SIGCM2.Api.Tests.csproj

@@ -27,6 +27,7 @@
 
   <ItemGroup>
     <Using Include="Xunit" />
+    <Using Include="SIGCM2.TestSupport" />
   </ItemGroup>
 
 </Project>

tests/SIGCM2.Api.Tests/Usuarios/ChangeMyPasswordEndpointTests.cs

@@ -14,8 +14,7 @@ namespace SIGCM2.Api.Tests.Usuarios;
 [Collection("ApiIntegration")]
 public sealed class ChangeMyPasswordEndpointTests : IAsyncLifetime
 {
-    private const string TestConnectionString =
+    private const string TestConnectionString = TestConnectionStrings.ApiTestDb;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
 
     // This hash corresponds to "@Diego550@"
     private const string DefaultHash = "$2a$12$rmq6tlSAQ8WXhR2CwLCSeuwCJKz/.8Eab95UQCUNfwe4dokeOqMcW";

tests/SIGCM2.Api.Tests/Usuarios/CreateUsuarioEndpointTests.cs

@@ -17,8 +17,7 @@ namespace SIGCM2.Api.Tests.Usuarios;
 [Collection("ApiIntegration")]
 public sealed class CreateUsuarioEndpointTests : IAsyncLifetime
 {
-    private const string TestConnectionString =
+    private const string TestConnectionString = TestConnectionStrings.ApiTestDb;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
 
     private const string Endpoint = "/api/v1/users";
     private const string AdminUsername = "admin";

tests/SIGCM2.Api.Tests/Usuarios/DeactivateReactivateEndpointTests.cs

@@ -14,8 +14,7 @@ namespace SIGCM2.Api.Tests.Usuarios;
 [Collection("ApiIntegration")]
 public sealed class DeactivateReactivateEndpointTests : IAsyncLifetime
 {
-    private const string TestConnectionString =
+    private const string TestConnectionString = TestConnectionStrings.ApiTestDb;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
 
     private readonly HttpClient _client;
     private readonly SqlTestFixture _db;

tests/SIGCM2.Api.Tests/Usuarios/GetUsuarioByIdEndpointTests.cs

@@ -14,8 +14,7 @@ namespace SIGCM2.Api.Tests.Usuarios;
 [Collection("ApiIntegration")]
 public sealed class GetUsuarioByIdEndpointTests : IAsyncLifetime
 {
-    private const string TestConnectionString =
+    private const string TestConnectionString = TestConnectionStrings.ApiTestDb;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
 
     private readonly HttpClient _client;
     private readonly SqlTestFixture _db;

tests/SIGCM2.Api.Tests/Usuarios/ListUsuariosEndpointTests.cs

@@ -14,8 +14,7 @@ namespace SIGCM2.Api.Tests.Usuarios;
 [Collection("ApiIntegration")]
 public sealed class ListUsuariosEndpointTests : IAsyncLifetime
 {
-    private const string TestConnectionString =
+    private const string TestConnectionString = TestConnectionStrings.ApiTestDb;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
 
     private readonly HttpClient _client;
     private readonly SqlTestFixture _db;

tests/SIGCM2.Api.Tests/Usuarios/ResetPasswordEndpointTests.cs

@@ -14,8 +14,7 @@ namespace SIGCM2.Api.Tests.Usuarios;
 [Collection("ApiIntegration")]
 public sealed class ResetPasswordEndpointTests : IAsyncLifetime
 {
-    private const string TestConnectionString =
+    private const string TestConnectionString = TestConnectionStrings.ApiTestDb;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
 
     private readonly HttpClient _client;
     private readonly SqlTestFixture _db;

tests/SIGCM2.Api.Tests/Usuarios/UpdateUsuarioEndpointTests.cs

@@ -14,8 +14,7 @@ namespace SIGCM2.Api.Tests.Usuarios;
 [Collection("ApiIntegration")]
 public sealed class UpdateUsuarioEndpointTests : IAsyncLifetime
 {
-    private const string TestConnectionString =
+    private const string TestConnectionString = TestConnectionStrings.ApiTestDb;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
 
     private readonly HttpClient _client;
     private readonly SqlTestFixture _db;

tests/SIGCM2.Api.Tests/Usuarios/UsuarioPermisosEndpointTests.cs

@@ -15,8 +15,7 @@ namespace SIGCM2.Api.Tests.Usuarios;
 [Collection("ApiIntegration")]
 public sealed class UsuarioPermisosEndpointTests : IAsyncLifetime
 {
-    private const string TestConnectionString =
+    private const string TestConnectionString = TestConnectionStrings.ApiTestDb;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
 
     private const string AdminUsername = "admin";
     private const string AdminPassword = "@Diego550@";

tests/SIGCM2.Application.Tests/Common/PermisoResolverTests.cs

@@ -44,7 +44,7 @@ public sealed class PermisoResolverTests
 
         Assert.DoesNotContain("A", result);
         Assert.Contains("B", result);
-        Assert.Equal(1, result.Count);
+        Assert.Single(result);
     }
 
     // R-04: Grant duplicado (ya en rol) → idempotente, no duplicados

tests/SIGCM2.Application.Tests/Common/TempPasswordGeneratorTests.cs

@@ -66,10 +66,10 @@ public class TempPasswordGeneratorTests
         {
             var pwd = TempPasswordGenerator.Generate(12);
             Assert.True(pwd.Length >= 12);
-            Assert.True(pwd.Any(char.IsUpper));
+            Assert.Contains(pwd, char.IsUpper);
-            Assert.True(pwd.Any(char.IsLower));
+            Assert.Contains(pwd, char.IsLower);
-            Assert.True(pwd.Any(char.IsDigit));
+            Assert.Contains(pwd, char.IsDigit);
-            Assert.True(pwd.Any(c => symbols.Contains(c)));
+            Assert.Contains(pwd, c => symbols.Contains(c));
         }
     }
 

tests/SIGCM2.Application.Tests/DatabaseCollection.cs

@@ -0,0 +1,15 @@
+using SIGCM2.TestSupport;
+using Xunit;
+
+namespace SIGCM2.Application.Tests;
+
+/// <summary>
+/// Declares the "Database" xUnit collection backed by a single shared SqlTestFixture.
+/// All test classes decorated with [Collection("Database")] share one fixture instance
+/// per test run — eliminating concurrent Respawner collisions.
+/// </summary>
+[CollectionDefinition("Database")]
+public sealed class DatabaseCollection : ICollectionFixture<SqlTestFixture>
+{
+    // Intentionally empty: this class only exists to declare the collection/fixture binding.
+}

tests/SIGCM2.Application.Tests/Infrastructure/Audit/AuditEventRepositoryTests.cs

@@ -13,8 +13,7 @@ namespace SIGCM2.Application.Tests.Infrastructure.Audit;
 [Collection("Database")]
 public sealed class AuditEventRepositoryTests : IAsyncLifetime
 {
-    private const string ConnectionString =
+    private const string ConnectionString = TestConnectionStrings.AppTestDb;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
 
     private SqlConnection _connection = null!;
     private AuditEventRepository _repo = null!;
@@ -130,7 +129,10 @@ public sealed class AuditEventRepositoryTests : IAsyncLifetime
     [Fact]
     public async Task QueryAsync_Limit_EmitsCursor_WhenMoreRowsAvailable()
     {
-        var t0 = DateTime.UtcNow.AddMinutes(-10);
+        // Determinístico: DATETIME2(3) + cursor roundtrip via "O" format puede perder ticks
+        // sub-ms de `DateTime.UtcNow` (observado ~37% flake rate, cursor vuelve como parentesis
+        // de la página anterior). Timestamp fijo con sub-ms = 0 elimina la ambigüedad.
+        var t0 = new DateTime(2026, 4, 19, 12, 0, 0, DateTimeKind.Utc);
         await Seed(5, t0);
 
         var page1 = await _repo.QueryAsync(new AuditEventFilter(null, null, null, null, null, null, Limit: 2));

tests/SIGCM2.Application.Tests/Infrastructure/Audit/AuditJobsTests.cs

@@ -16,8 +16,7 @@ namespace SIGCM2.Application.Tests.Infrastructure.Audit;
 [Collection("Database")]
 public sealed class AuditJobsTests : IAsyncLifetime
 {
-    private const string ConnectionString =
+    private const string ConnectionString = TestConnectionStrings.AppTestDb;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
 
     private SqlConnection _connection = null!;
     private SqlConnectionFactory _factory = null!;

tests/SIGCM2.Application.Tests/Infrastructure/Audit/JsonSanitizerTests.cs

@@ -154,9 +154,17 @@ public sealed class JsonSanitizerTests
 
         var input = new
         {
-            password = "1", passwordHash = "2", token = "3", refreshToken = "4",
+            password = "1",
-            accessToken = "5", cvv = "6", card = "7", cardNumber = "8",
+            passwordHash = "2",
-            secret = "9", apiKey = "10", privateKey = "11",
+            token = "3",
+            refreshToken = "4",
+            accessToken = "5",
+            cvv = "6",
+            card = "7",
+            cardNumber = "8",
+            secret = "9",
+            apiKey = "10",
+            privateKey = "11",
             keep = "yes",
         };
 

tests/SIGCM2.Application.Tests/Infrastructure/Audit/SecurityEventRepositoryTests.cs

@@ -11,8 +11,7 @@ namespace SIGCM2.Application.Tests.Infrastructure.Audit;
 [Collection("Database")]
 public sealed class SecurityEventRepositoryTests : IAsyncLifetime
 {
-    private const string ConnectionString =
+    private const string ConnectionString = TestConnectionStrings.AppTestDb;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
 
     private SqlConnection _connection = null!;
     private SecurityEventRepository _repo = null!;

tests/SIGCM2.Application.Tests/Infrastructure/IngresosBrutosRepositoryTests.cs

@@ -18,8 +18,7 @@ namespace SIGCM2.Application.Tests.Infrastructure;
 [Collection("Database")]
 public class IngresosBrutosRepositoryTests : IAsyncLifetime
 {
-    private const string ConnectionString =
+    private const string ConnectionString = TestConnectionStrings.AppTestDb;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
 
     private SqlConnection _connection = null!;
     private IIngresosBrutosRepository _repo = null!;

tests/SIGCM2.Application.Tests/Infrastructure/RefreshTokenRepositoryTests.cs

@@ -1,105 +1,44 @@
 using Dapper;
-using Microsoft.Data.SqlClient;
-using Respawn;
 using SIGCM2.Domain.Entities;
 using SIGCM2.Infrastructure.Persistence;
+using SIGCM2.TestSupport;
 
 namespace SIGCM2.Application.Tests.Infrastructure;
 
 /// <summary>
-/// Integration tests for RefreshTokenRepository against SIGCM2_Test.
+/// Integration tests for RefreshTokenRepository against SIGCM2_Test_App.
-/// Uses Respawn to reset the DB between test classes; the repository opens its own
+/// Uses shared SqlTestFixture via xUnit collection fixture; the repository opens its own
 /// connections so transaction-scoped isolation would block on FK locks.
 /// </summary>
 [Collection("Database")]
 public class RefreshTokenRepositoryTests : IAsyncLifetime
 {
-    private const string ConnectionString =
+    private readonly SqlTestFixture _db;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
-
-    private SqlConnection _connection = null!;
-    private Respawner _respawner = null!;
     private RefreshTokenRepository _repository = null!;
     private int _testUserId;
 
+    public RefreshTokenRepositoryTests(SqlTestFixture db)
+    {
+        _db = db;
+    }
+
     public async Task InitializeAsync()
     {
-        _connection = new SqlConnection(ConnectionString);
+        await _db.ResetAndSeedAsync();
-        await _connection.OpenAsync();
-
-        _respawner = await Respawner.CreateAsync(_connection, new RespawnerOptions
-        {
-            DbAdapter = DbAdapter.SqlServer,
-            // Rol is a lookup table seeded by migration V003 — never wipe or Usuario FK breaks.
-            TablesToIgnore =
-            [
-                new Respawn.Graph.Table("dbo", "Rol"),
-                new Respawn.Graph.Table("dbo", "Permiso"),
-                new Respawn.Graph.Table("dbo", "RolPermiso"),
-                // UDT-010: *_History tables are system-versioned — engine rejects direct DELETE.
-                new Respawn.Graph.Table("dbo", "Usuario_History"),
-                new Respawn.Graph.Table("dbo", "Rol_History"),
-                new Respawn.Graph.Table("dbo", "Permiso_History"),
-                new Respawn.Graph.Table("dbo", "RolPermiso_History"),
-                // ADM-001 (V011): Medio + Seccion are temporal — history tables cannot be directly deleted.
-                new Respawn.Graph.Table("dbo", "Medio_History"),
-                new Respawn.Graph.Table("dbo", "Seccion_History"),
-                // ADM-008 (V013): PuntoDeVenta is temporal; SecuenciaComprobante is NOT temporal (AD8 revisitado).
-                new Respawn.Graph.Table("dbo", "PuntoDeVenta_History"),
-                // ADM-009 (V014): TipoDeIva + IngresosBrutos son temporales.
-                new Respawn.Graph.Table("dbo", "TipoDeIva_History"),
-                new Respawn.Graph.Table("dbo", "IngresosBrutos_History"),
-                new Respawn.Graph.Table("dbo", "TipoDeIva"),
-                new Respawn.Graph.Table("dbo", "IngresosBrutos"),
-                // CAT-001 (V016): Rubro es temporal — history no puede deletearse directo.
-                new Respawn.Graph.Table("dbo", "Rubro_History"),
-            ]
-        });
-
-        await _respawner.ResetAsync(_connection);
-        await SeedRolCanonicalAsync();
         await SeedTestUserAsync();
 
-        _testUserId = await _connection.QuerySingleAsync<int>(
+        _testUserId = await _db.Connection.QuerySingleAsync<int>(
             "SELECT Id FROM dbo.Usuario WHERE Username = 'test_rt_user'");
 
-        var factory = new SqlConnectionFactory(ConnectionString);
+        var factory = new SqlConnectionFactory(TestConnectionStrings.AppTestDb);
         _repository = new RefreshTokenRepository(factory);
     }
 
-    public async Task DisposeAsync()
+    public Task DisposeAsync() => Task.CompletedTask;
-    {
-        await _respawner.ResetAsync(_connection);
-        await _connection.CloseAsync();
-        await _connection.DisposeAsync();
-    }
-
-    private async Task SeedRolCanonicalAsync()
-    {
-        const string sql = """
-            SET QUOTED_IDENTIFIER ON;
-            MERGE dbo.Rol AS t
-            USING (VALUES
-                ('admin', N'Administrador', N'Supervisor total'),
-                ('cajero', N'Cajero', N'Mostrador contado'),
-                ('operador_ctacte', N'Operador Cta Cte', N'Cuenta corriente'),
-                ('picadora', N'Picadora/Correctora', N'Edición de textos'),
-                ('jefe_publicidad', N'Jefe de Publicidad', N'Supervisión de pauta'),
-                ('productor', N'Productor', N'Carga restringida'),
-                ('diagramacion', N'Diagramación/Taller', N'Solo lectura pauta'),
-                ('reportes', N'Reportes', N'Solo lectura reportes')
-            ) AS s (Codigo, Nombre, Descripcion)
-            ON t.Codigo = s.Codigo
-            WHEN NOT MATCHED BY TARGET THEN
-                INSERT (Codigo, Nombre, Descripcion, Activo)
-                VALUES (s.Codigo, s.Nombre, s.Descripcion, 1);
-            """;
-        await _connection.ExecuteAsync(sql);
-    }
 
     private async Task SeedTestUserAsync()
     {
-        await _connection.ExecuteAsync("""
+        await _db.Connection.ExecuteAsync("""
             SET QUOTED_IDENTIFIER ON;
             IF NOT EXISTS (SELECT 1 FROM dbo.Usuario WHERE Username = 'test_rt_user')
                 INSERT INTO dbo.Usuario (Username, PasswordHash, Nombre, Apellido, Rol, PermisosJson, Activo)

tests/SIGCM2.Application.Tests/Infrastructure/TipoDeIvaRepositoryTests.cs

@@ -19,8 +19,7 @@ namespace SIGCM2.Application.Tests.Infrastructure;
 [Collection("Database")]
 public class TipoDeIvaRepositoryTests : IAsyncLifetime
 {
-    private const string ConnectionString =
+    private const string ConnectionString = TestConnectionStrings.AppTestDb;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
 
     private SqlConnection _connection = null!;
     private ITipoDeIvaRepository _repo = null!;

tests/SIGCM2.Application.Tests/Integration/PermisoRepositoryTests.cs

@@ -11,8 +11,7 @@ namespace SIGCM2.Application.Tests.Integration;
 [Collection("Database")]
 public class PermisoRepositoryTests : IAsyncLifetime
 {
-    private const string ConnectionString =
+    private const string ConnectionString = TestConnectionStrings.AppTestDb;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
 
     private SqlConnection _connection = null!;
     private PermisoRepository _repository = null!;

tests/SIGCM2.Application.Tests/Integration/RolPermisoRepositoryTests.cs

@@ -11,8 +11,7 @@ namespace SIGCM2.Application.Tests.Integration;
 [Collection("Database")]
 public class RolPermisoRepositoryTests : IAsyncLifetime
 {
-    private const string ConnectionString =
+    private const string ConnectionString = TestConnectionStrings.AppTestDb;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
 
     private SqlConnection _connection = null!;
     private RolPermisoRepository _repository = null!;

tests/SIGCM2.Application.Tests/Integration/RolRepositoryTests.cs

@@ -8,8 +8,7 @@ namespace SIGCM2.Application.Tests.Integration;
 [Collection("Database")]
 public class RolRepositoryTests : IAsyncLifetime
 {
-    private const string ConnectionString =
+    private const string ConnectionString = TestConnectionStrings.AppTestDb;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
 
     private SqlConnection _connection = null!;
     private RolRepository _repository = null!;

tests/SIGCM2.Application.Tests/Integration/UsuarioRepositoryTests.cs

@@ -1,68 +1,29 @@
-using Microsoft.Data.SqlClient;
+using Dapper;
-using Respawn;
 using SIGCM2.Infrastructure.Persistence;
+using SIGCM2.TestSupport;
 
 namespace SIGCM2.Application.Tests.Integration;
 
 [Collection("Database")]
 public class UsuarioRepositoryTests : IAsyncLifetime
 {
-    private const string ConnectionString =
+    private readonly SqlTestFixture _db;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
-
-    private SqlConnection _connection = null!;
-    private Respawner _respawner = null!;
     private UsuarioRepository _repository = null!;
 
+    public UsuarioRepositoryTests(SqlTestFixture db)
+    {
+        _db = db;
+    }
+
     public async Task InitializeAsync()
     {
-        _connection = new SqlConnection(ConnectionString);
+        await _db.ResetAndSeedAsync();
-        await _connection.OpenAsync();
 
-        _respawner = await Respawner.CreateAsync(_connection, new RespawnerOptions
+        var factory = new SqlConnectionFactory(TestConnectionStrings.AppTestDb);
-        {
-            DbAdapter = DbAdapter.SqlServer,
-            // Rol is a lookup table seeded by migration V003 — never wipe or Usuario FK breaks.
-            TablesToIgnore =
-            [
-                new Respawn.Graph.Table("dbo", "Rol"),
-                new Respawn.Graph.Table("dbo", "Permiso"),
-                new Respawn.Graph.Table("dbo", "RolPermiso"),
-                // UDT-010: *_History tables are system-versioned — engine rejects direct DELETE.
-                new Respawn.Graph.Table("dbo", "Usuario_History"),
-                new Respawn.Graph.Table("dbo", "Rol_History"),
-                new Respawn.Graph.Table("dbo", "Permiso_History"),
-                new Respawn.Graph.Table("dbo", "RolPermiso_History"),
-                // ADM-001 (V011): Medio + Seccion are temporal — history tables cannot be directly deleted.
-                new Respawn.Graph.Table("dbo", "Medio_History"),
-                new Respawn.Graph.Table("dbo", "Seccion_History"),
-                // ADM-008 (V013): PuntoDeVenta is temporal; SecuenciaComprobante is NOT temporal (AD8 revisitado).
-                new Respawn.Graph.Table("dbo", "PuntoDeVenta_History"),
-                // ADM-009 (V014): TipoDeIva + IngresosBrutos son temporales.
-                new Respawn.Graph.Table("dbo", "TipoDeIva_History"),
-                new Respawn.Graph.Table("dbo", "IngresosBrutos_History"),
-                new Respawn.Graph.Table("dbo", "TipoDeIva"),
-                new Respawn.Graph.Table("dbo", "IngresosBrutos"),
-                // CAT-001 (V016): Rubro es temporal — history no puede deletearse directo.
-                new Respawn.Graph.Table("dbo", "Rubro_History"),
-            ]
-        });
-
-        // Reset DB, re-seed Rol canonical table (lookup) and admin user for each test class run.
-        await _respawner.ResetAsync(_connection);
-        await SeedRolCanonicalAsync();
-        await SeedAdminAsync();
-
-        var factory = new SqlConnectionFactory(ConnectionString);
         _repository = new UsuarioRepository(factory);
     }
 
-    public async Task DisposeAsync()
+    public Task DisposeAsync() => Task.CompletedTask;
-    {
-        await _respawner.ResetAsync(_connection);
-        await _connection.CloseAsync();
-        await _connection.DisposeAsync();
-    }
 
     // Scenario: GetByUsername returns correct entity when user exists
     [Fact]
@@ -90,7 +51,7 @@ public class UsuarioRepositoryTests : IAsyncLifetime
     public async Task GetByUsernameAsync_DifferentUser_ReturnsCorrectUser_Cajero()
     {
         // Insert a second user with canonical rol 'cajero' (post-UDT-004 FK requires Rol.Codigo to exist).
-        await _connection.ExecuteAsync(
+        await _db.Connection.ExecuteAsync(
             "INSERT INTO dbo.Usuario (Username, PasswordHash, Nombre, Apellido, Rol, PermisosJson) " +
             "VALUES ('cajero1', '$2a$12$hash2', 'Juan', 'Pérez', 'cajero', '[]')");
 
@@ -103,48 +64,4 @@ public class UsuarioRepositoryTests : IAsyncLifetime
         Assert.Equal("admin", admin.Rol);
         Assert.Equal("cajero", cajero.Rol);
     }
-
-    private async Task SeedRolCanonicalAsync()
-    {
-        const string sql = """
-            SET QUOTED_IDENTIFIER ON;
-            MERGE dbo.Rol AS t
-            USING (VALUES
-                ('admin', N'Administrador', N'Supervisor total'),
-                ('cajero', N'Cajero', N'Mostrador contado'),
-                ('operador_ctacte', N'Operador Cta Cte', N'Cuenta corriente'),
-                ('picadora', N'Picadora/Correctora', N'Edición de textos'),
-                ('jefe_publicidad', N'Jefe de Publicidad', N'Supervisión de pauta'),
-                ('productor', N'Productor', N'Carga restringida'),
-                ('diagramacion', N'Diagramación/Taller', N'Solo lectura pauta'),
-                ('reportes', N'Reportes', N'Solo lectura reportes')
-            ) AS s (Codigo, Nombre, Descripcion)
-            ON t.Codigo = s.Codigo
-            WHEN NOT MATCHED BY TARGET THEN
-                INSERT (Codigo, Nombre, Descripcion, Activo)
-                VALUES (s.Codigo, s.Nombre, s.Descripcion, 1);
-            """;
-        await _connection.ExecuteAsync(sql);
-    }
-
-    private async Task SeedAdminAsync()
-    {
-        await _connection.ExecuteAsync(
-            "SET QUOTED_IDENTIFIER ON; " +
-            "IF NOT EXISTS (SELECT 1 FROM dbo.Usuario WHERE Username = 'admin') " +
-            "INSERT INTO dbo.Usuario (Username, PasswordHash, Nombre, Apellido, Rol, PermisosJson, Activo) " +
-            "VALUES ('admin', '$2a$12$rmq6tlSAQ8WXhR2CwLCSeuwCJKz/.8Eab95UQCUNfwe4dokeOqMcW', " +
-            "'Administrador', 'Sistema', 'admin', '[\"*\"]', 1)");
-    }
-}
-
-// Dapper extension helper for IDbConnection
-file static class DapperHelper
-{
-    public static async Task ExecuteAsync(this SqlConnection conn, string sql)
-    {
-        using var cmd = conn.CreateCommand();
-        cmd.CommandText = sql;
-        await cmd.ExecuteNonQueryAsync();
-    }
 }

tests/SIGCM2.Application.Tests/Integration/UsuarioRepository_PermisosTests.cs

@@ -1,86 +1,46 @@
 using Dapper;
-using Microsoft.Data.SqlClient;
-using Respawn;
 using SIGCM2.Infrastructure.Persistence;
+using SIGCM2.TestSupport;
 
 namespace SIGCM2.Application.Tests.Integration;
 
 /// <summary>
 /// Integration tests for IUsuarioRepository.UpdatePermisosJsonAsync (UDT-009).
-/// Uses SIGCM2_Test database directly.
+/// Uses SIGCM2_Test_App database via shared SqlTestFixture.
 /// </summary>
 [Collection("Database")]
 public sealed class UsuarioRepository_PermisosTests : IAsyncLifetime
 {
-    private const string ConnectionString =
+    private readonly SqlTestFixture _db;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
-
-    private SqlConnection _connection = null!;
-    private Respawner _respawner = null!;
     private UsuarioRepository _repository = null!;
 
+    public UsuarioRepository_PermisosTests(SqlTestFixture db)
+    {
+        _db = db;
+    }
+
     public async Task InitializeAsync()
     {
-        _connection = new SqlConnection(ConnectionString);
+        await _db.ResetAndSeedAsync();
-        await _connection.OpenAsync();
 
-        _respawner = await Respawner.CreateAsync(_connection, new RespawnerOptions
+        var factory = new SqlConnectionFactory(TestConnectionStrings.AppTestDb);
-        {
-            DbAdapter = DbAdapter.SqlServer,
-            TablesToIgnore =
-            [
-                new Respawn.Graph.Table("dbo", "Rol"),
-                new Respawn.Graph.Table("dbo", "Permiso"),
-                new Respawn.Graph.Table("dbo", "RolPermiso"),
-                // UDT-010: *_History tables are system-versioned — engine rejects direct DELETE.
-                new Respawn.Graph.Table("dbo", "Usuario_History"),
-                new Respawn.Graph.Table("dbo", "Rol_History"),
-                new Respawn.Graph.Table("dbo", "Permiso_History"),
-                new Respawn.Graph.Table("dbo", "RolPermiso_History"),
-                // ADM-001 (V011): Medio + Seccion are temporal — history tables cannot be directly deleted.
-                new Respawn.Graph.Table("dbo", "Medio_History"),
-                new Respawn.Graph.Table("dbo", "Seccion_History"),
-                // ADM-008 (V013): PuntoDeVenta is temporal; SecuenciaComprobante is NOT temporal (AD8 revisitado).
-                new Respawn.Graph.Table("dbo", "PuntoDeVenta_History"),
-                // ADM-009 (V014): TipoDeIva + IngresosBrutos son temporales.
-                new Respawn.Graph.Table("dbo", "TipoDeIva_History"),
-                new Respawn.Graph.Table("dbo", "IngresosBrutos_History"),
-                new Respawn.Graph.Table("dbo", "TipoDeIva"),
-                new Respawn.Graph.Table("dbo", "IngresosBrutos"),
-                // CAT-001 (V016): Rubro es temporal — history no puede deletearse directo.
-                new Respawn.Graph.Table("dbo", "Rubro_History"),
-            ]
-        });
-
-        await _respawner.ResetAsync(_connection);
-        await SeedRolCanonicalAsync();
-
-        var factory = new SqlConnectionFactory(ConnectionString);
         _repository = new UsuarioRepository(factory);
 
         // Seed a test user
-        await _connection.ExecuteAsync("""
+        await _db.Connection.ExecuteAsync("""
             INSERT INTO dbo.Usuario (Username, PasswordHash, Nombre, Apellido, Rol, PermisosJson, Activo, MustChangePassword)
             VALUES ('testuser', '$2a$12$hash', 'Test', 'User', 'cajero', '{"grant":[],"deny":[]}', 1, 0)
             """);
     }
 
-    public async Task DisposeAsync()
+    public Task DisposeAsync() => Task.CompletedTask;
-    {
-        if (_connection is not null)
-        {
-            await _respawner.ResetAsync(_connection);
-            await _connection.CloseAsync();
-            await _connection.DisposeAsync();
-        }
-    }
 
     // UPJ-01: UpdatePermisosJsonAsync persists PermisosJson and FechaModificacion
     [Fact]
     public async Task UpdatePermisosJsonAsync_PersistsJsonAndFechaModificacion()
     {
         // Arrange
-        var userId = await _connection.QuerySingleAsync<int>(
+        var userId = await _db.Connection.QuerySingleAsync<int>(
             "SELECT Id FROM dbo.Usuario WHERE Username = 'testuser'");
         var newJson = """{"grant":["textos:editar"],"deny":[]}""";
         var fechaMod = DateTime.UtcNow;
@@ -89,7 +49,7 @@ public sealed class UsuarioRepository_PermisosTests : IAsyncLifetime
         await _repository.UpdatePermisosJsonAsync(userId, newJson, fechaMod);
 
         // Assert
-        var row = await _connection.QuerySingleAsync<(string PermisosJson, DateTime? FechaModificacion)>(
+        var row = await _db.Connection.QuerySingleAsync<(string PermisosJson, DateTime? FechaModificacion)>(
             "SELECT PermisosJson, FechaModificacion FROM dbo.Usuario WHERE Id = @Id",
             new { Id = userId });
 
@@ -114,7 +74,7 @@ public sealed class UsuarioRepository_PermisosTests : IAsyncLifetime
     public async Task UpdatePermisosJsonAsync_GetByIdReflectsChange()
     {
         // Arrange
-        var userId = await _connection.QuerySingleAsync<int>(
+        var userId = await _db.Connection.QuerySingleAsync<int>(
             "SELECT Id FROM dbo.Usuario WHERE Username = 'testuser'");
         var newJson = """{"grant":["pauta:azanu:ver"],"deny":["ventas:contado:cobrar"]}""";
 
@@ -127,22 +87,4 @@ public sealed class UsuarioRepository_PermisosTests : IAsyncLifetime
         Assert.NotNull(usuario);
         Assert.Equal(newJson, usuario!.PermisosJson);
     }
-
-    // ── helpers ───────────────────────────────────────────────────────────────
-
-    private async Task SeedRolCanonicalAsync()
-    {
-        await _connection.ExecuteAsync("""
-            SET QUOTED_IDENTIFIER ON;
-            MERGE dbo.Rol AS t
-            USING (VALUES
-                ('admin', N'Administrador', N'Supervisor total'),
-                ('cajero', N'Cajero', N'Mostrador contado')
-            ) AS s (Codigo, Nombre, Descripcion)
-            ON t.Codigo = s.Codigo
-            WHEN NOT MATCHED BY TARGET THEN
-                INSERT (Codigo, Nombre, Descripcion, Activo)
-                VALUES (s.Codigo, s.Nombre, s.Descripcion, 1);
-            """);
-    }
 }

tests/SIGCM2.Application.Tests/Integration/V009MigrationTests.cs

@@ -1,68 +1,29 @@
 using Dapper;
-using Microsoft.Data.SqlClient;
+using SIGCM2.TestSupport;
-using Respawn;
 
 namespace SIGCM2.Application.Tests.Integration;
 
 /// <summary>
 /// SUITE-B-MIGRATION-V009 — M-01 a M-07 (UDT-009)
 /// Validates the V009 migration SQL and SqlTestFixture.EnsureV009SchemaAsync.
-/// Uses SIGCM2_Test database directly.
+/// Uses SIGCM2_Test_App database via shared SqlTestFixture.
 /// </summary>
 [Collection("Database")]
 public sealed class V009MigrationTests : IAsyncLifetime
 {
-    private const string ConnectionString =
+    private readonly SqlTestFixture _db;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
 
-    private SqlConnection _connection = null!;
+    public V009MigrationTests(SqlTestFixture db)
-    private Respawner _respawner = null!;
+    {
+        _db = db;
+    }
 
     public async Task InitializeAsync()
     {
-        _connection = new SqlConnection(ConnectionString);
+        await _db.ResetAndSeedAsync();
-        await _connection.OpenAsync();
-
-        _respawner = await Respawner.CreateAsync(_connection, new RespawnerOptions
-        {
-            DbAdapter = DbAdapter.SqlServer,
-            TablesToIgnore =
-            [
-                new Respawn.Graph.Table("dbo", "Rol"),
-                new Respawn.Graph.Table("dbo", "Permiso"),
-                new Respawn.Graph.Table("dbo", "RolPermiso"),
-                // UDT-010: *_History tables are system-versioned — engine rejects direct DELETE.
-                new Respawn.Graph.Table("dbo", "Usuario_History"),
-                new Respawn.Graph.Table("dbo", "Rol_History"),
-                new Respawn.Graph.Table("dbo", "Permiso_History"),
-                new Respawn.Graph.Table("dbo", "RolPermiso_History"),
-                // ADM-001 (V011): Medio + Seccion are temporal — history tables cannot be directly deleted.
-                new Respawn.Graph.Table("dbo", "Medio_History"),
-                new Respawn.Graph.Table("dbo", "Seccion_History"),
-                // ADM-008 (V013): PuntoDeVenta is temporal; SecuenciaComprobante is NOT temporal (AD8 revisitado).
-                new Respawn.Graph.Table("dbo", "PuntoDeVenta_History"),
-                // ADM-009 (V014): TipoDeIva + IngresosBrutos son temporales.
-                new Respawn.Graph.Table("dbo", "TipoDeIva_History"),
-                new Respawn.Graph.Table("dbo", "IngresosBrutos_History"),
-                new Respawn.Graph.Table("dbo", "TipoDeIva"),
-                new Respawn.Graph.Table("dbo", "IngresosBrutos"),
-                // CAT-001 (V016): Rubro es temporal — history no puede deletearse directo.
-                new Respawn.Graph.Table("dbo", "Rubro_History"),
-            ]
-        });
-
-        await _respawner.ResetAsync(_connection);
-        await SeedRolAsync();
     }
 
-    public async Task DisposeAsync()
+    public Task DisposeAsync() => Task.CompletedTask;
-    {
-        if (_connection is not null)
-        {
-            await _connection.CloseAsync();
-            await _connection.DisposeAsync();
-        }
-    }
 
     // M-01: migration file exists on filesystem
     [Fact]
@@ -112,7 +73,7 @@ public sealed class V009MigrationTests : IAsyncLifetime
               AND name = 'PermisosJson'
             """;
 
-        var definition = await _connection.QuerySingleOrDefaultAsync<string>(sql);
+        var definition = await _db.Connection.QuerySingleOrDefaultAsync<string>(sql);
 
         Assert.NotNull(definition);
         Assert.Contains(@"{""grant"":[]", definition);
@@ -125,7 +86,7 @@ public sealed class V009MigrationTests : IAsyncLifetime
     {
         await EnsureV009SchemaAsync();
 
-        await _connection.ExecuteAsync("""
+        await _db.Connection.ExecuteAsync("""
             INSERT INTO dbo.Usuario (Username, PasswordHash, Nombre, Apellido, Rol, PermisosJson, Activo, MustChangePassword)
             VALUES ('legacyempty', '$2a$12$hash', 'L', 'E', 'admin', '[]', 1, 0)
             """);
@@ -133,7 +94,7 @@ public sealed class V009MigrationTests : IAsyncLifetime
         // Run migration again to migrate the newly inserted row
         await EnsureV009SchemaAsync();
 
-        var permisosJson = await _connection.QuerySingleAsync<string>(
+        var permisosJson = await _db.Connection.QuerySingleAsync<string>(
             "SELECT PermisosJson FROM dbo.Usuario WHERE Username = 'legacyempty'");
 
         Assert.Equal("""{"grant":[],"deny":[]}""", permisosJson);
@@ -145,14 +106,14 @@ public sealed class V009MigrationTests : IAsyncLifetime
     {
         await EnsureV009SchemaAsync();
 
-        await _connection.ExecuteAsync("""
+        await _db.Connection.ExecuteAsync("""
             INSERT INTO dbo.Usuario (Username, PasswordHash, Nombre, Apellido, Rol, PermisosJson, Activo, MustChangePassword)
             VALUES ('legacywild', '$2a$12$hash', 'L', 'W', 'admin', '["*"]', 1, 0)
             """);
 
         await EnsureV009SchemaAsync();
 
-        var permisosJson = await _connection.QuerySingleAsync<string>(
+        var permisosJson = await _db.Connection.QuerySingleAsync<string>(
             "SELECT PermisosJson FROM dbo.Usuario WHERE Username = 'legacywild'");
 
         Assert.Equal("""{"grant":[],"deny":[]}""", permisosJson);
@@ -168,7 +129,7 @@ public sealed class V009MigrationTests : IAsyncLifetime
         await EnsureV009SchemaAsync();
 
         // Temporarily drop and re-add without the DEFAULT so we can insert ''
-        await _connection.ExecuteAsync("""
+        await _db.Connection.ExecuteAsync("""
             IF EXISTS (
                 SELECT 1 FROM sys.default_constraints
                 WHERE name = 'DF_Usuario_Permisos'
@@ -177,7 +138,7 @@ public sealed class V009MigrationTests : IAsyncLifetime
                 ALTER TABLE dbo.Usuario DROP CONSTRAINT DF_Usuario_Permisos;
             """);
 
-        await _connection.ExecuteAsync("""
+        await _db.Connection.ExecuteAsync("""
             INSERT INTO dbo.Usuario (Username, PasswordHash, Nombre, Apellido, Rol, PermisosJson, Activo, MustChangePassword)
             VALUES ('emptystruser', '$2a$12$hash', 'E', 'S', 'admin', '', 1, 0)
             """);
@@ -185,7 +146,7 @@ public sealed class V009MigrationTests : IAsyncLifetime
         // Re-apply V009 (which restores constraint and migrates '' rows)
         await EnsureV009SchemaAsync();
 
-        var permisosJson = await _connection.QuerySingleAsync<string>(
+        var permisosJson = await _db.Connection.QuerySingleAsync<string>(
             "SELECT PermisosJson FROM dbo.Usuario WHERE Username = 'emptystruser'");
 
         Assert.Equal("""{"grant":[],"deny":[]}""", permisosJson);
@@ -198,7 +159,7 @@ public sealed class V009MigrationTests : IAsyncLifetime
         await EnsureV009SchemaAsync();
 
         // Seed admin as TestFixture does post-V009
-        await _connection.ExecuteAsync("""
+        await _db.Connection.ExecuteAsync("""
             IF NOT EXISTS (SELECT 1 FROM dbo.Usuario WHERE Username = 'admin')
             INSERT INTO dbo.Usuario (Username, PasswordHash, Nombre, Apellido, Rol, PermisosJson, Activo, MustChangePassword)
             VALUES (
@@ -208,7 +169,7 @@ public sealed class V009MigrationTests : IAsyncLifetime
             )
             """);
 
-        var permisosJson = await _connection.QuerySingleAsync<string>(
+        var permisosJson = await _db.Connection.QuerySingleAsync<string>(
             "SELECT PermisosJson FROM dbo.Usuario WHERE Username = 'admin'");
 
         Assert.Equal("""{"grant":[],"deny":[]}""", permisosJson);
@@ -216,19 +177,6 @@ public sealed class V009MigrationTests : IAsyncLifetime
 
     // ── helpers ───────────────────────────────────────────────────────────────
 
-    private async Task SeedRolAsync()
-    {
-        await _connection.ExecuteAsync("""
-            SET QUOTED_IDENTIFIER ON;
-            MERGE dbo.Rol AS t
-            USING (VALUES ('admin', N'Administrador', N'Supervisor total'))
-            AS s (Codigo, Nombre, Descripcion)
-            ON t.Codigo = s.Codigo
-            WHEN NOT MATCHED BY TARGET THEN
-                INSERT (Codigo, Nombre, Descripcion, Activo) VALUES (s.Codigo, s.Nombre, s.Descripcion, 1);
-            """);
-    }
-
     /// <summary>
     /// Replicates V009 migration idempotently — mirrors SqlTestFixture.EnsureV009SchemaAsync.
     /// </summary>
@@ -266,8 +214,8 @@ public sealed class V009MigrationTests : IAsyncLifetime
                OR LTRIM(RTRIM(PermisosJson)) = ''
             """;
 
-        await _connection.ExecuteAsync(dropConstraint);
+        await _db.Connection.ExecuteAsync(dropConstraint);
-        await _connection.ExecuteAsync(addConstraint);
+        await _db.Connection.ExecuteAsync(addConstraint);
-        await _connection.ExecuteAsync(migrateRows);
+        await _db.Connection.ExecuteAsync(migrateRows);
     }
 }

tests/SIGCM2.Application.Tests/Medios/MedioRepositoryTests.cs

@@ -1,71 +1,35 @@
 using Dapper;
-using Microsoft.Data.SqlClient;
-using Respawn;
 using SIGCM2.Domain.Entities;
 using SIGCM2.Infrastructure.Persistence;
+using SIGCM2.TestSupport;
 
 namespace SIGCM2.Application.Tests.Medios;
 
 /// <summary>
-/// Integration tests for MedioRepository against SIGCM2_Test.
+/// Integration tests for MedioRepository against SIGCM2_Test_App.
 /// TDD: RED written before implementation, GREEN after MedioRepository was created.
 /// Temporal: after UpdateAsync, dbo.Medio_History MUST have ≥1 row for that Id.
 /// </summary>
 [Collection("Database")]
 public class MedioRepositoryTests : IAsyncLifetime
 {
-    private const string ConnectionString =
+    private readonly SqlTestFixture _db;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
-
-    private SqlConnection _connection = null!;
-    private Respawner _respawner = null!;
     private MedioRepository _repository = null!;
 
+    public MedioRepositoryTests(SqlTestFixture db)
+    {
+        _db = db;
+    }
+
     public async Task InitializeAsync()
     {
-        _connection = new SqlConnection(ConnectionString);
+        await _db.ResetAndSeedAsync();
-        await _connection.OpenAsync();
 
-        _respawner = await Respawner.CreateAsync(_connection, new RespawnerOptions
+        var factory = new SqlConnectionFactory(TestConnectionStrings.AppTestDb);
-        {
-            DbAdapter = DbAdapter.SqlServer,
-            TablesToIgnore =
-            [
-                new Respawn.Graph.Table("dbo", "Rol"),
-                new Respawn.Graph.Table("dbo", "Permiso"),
-                new Respawn.Graph.Table("dbo", "RolPermiso"),
-                // *_History tables are system-versioned — engine rejects direct DELETE.
-                new Respawn.Graph.Table("dbo", "Usuario_History"),
-                new Respawn.Graph.Table("dbo", "Rol_History"),
-                new Respawn.Graph.Table("dbo", "Permiso_History"),
-                new Respawn.Graph.Table("dbo", "RolPermiso_History"),
-                // ADM-001 (V011): Medio + Seccion are temporal — history tables cannot be directly deleted.
-                new Respawn.Graph.Table("dbo", "Medio_History"),
-                new Respawn.Graph.Table("dbo", "Seccion_History"),
-                // ADM-008 (V013): PuntoDeVenta is temporal; SecuenciaComprobante is NOT temporal (AD8 revisitado).
-                new Respawn.Graph.Table("dbo", "PuntoDeVenta_History"),
-                // ADM-009 (V014): TipoDeIva + IngresosBrutos son temporales.
-                new Respawn.Graph.Table("dbo", "TipoDeIva_History"),
-                new Respawn.Graph.Table("dbo", "IngresosBrutos_History"),
-                new Respawn.Graph.Table("dbo", "TipoDeIva"),
-                new Respawn.Graph.Table("dbo", "IngresosBrutos"),
-                // CAT-001 (V016): Rubro es temporal — history no puede deletearse directo.
-                new Respawn.Graph.Table("dbo", "Rubro_History"),
-            ]
-        });
-
-        await _respawner.ResetAsync(_connection);
-        await SeedRolCanonicalAsync();
-
-        var factory = new SqlConnectionFactory(ConnectionString);
         _repository = new MedioRepository(factory);
     }
 
-    public async Task DisposeAsync()
+    public Task DisposeAsync() => Task.CompletedTask;
-    {
-        await _connection.CloseAsync();
-        await _connection.DisposeAsync();
-    }
 
     // ── AddAsync + GetByIdAsync roundtrip ─────────────────────────────────────
 
@@ -172,7 +136,7 @@ public class MedioRepositoryTests : IAsyncLifetime
         var updated = original!.WithUpdatedProfile("Historial v2", TipoMedio.Web, null, DateTime.UtcNow);
         await _repository.UpdateAsync(updated);
 
-        var historyCount = await _connection.ExecuteScalarAsync<int>(
+        var historyCount = await _db.Connection.ExecuteScalarAsync<int>(
             "SELECT COUNT(*) FROM dbo.Medio_History WHERE Id = @Id", new { Id = id });
 
         Assert.True(historyCount >= 1, $"Expected ≥1 history row for Medio Id={id}, got {historyCount}");
@@ -243,29 +207,4 @@ public class MedioRepositoryTests : IAsyncLifetime
         Assert.Equal(3, result.Total);
         Assert.Equal(2, result.Items.Count);
     }
-
-    // ── helpers ───────────────────────────────────────────────────────────────
-
-    private async Task SeedRolCanonicalAsync()
-    {
-        const string sql = """
-            SET QUOTED_IDENTIFIER ON;
-            MERGE dbo.Rol AS t
-            USING (VALUES
-                ('admin', N'Administrador', N'Supervisor total'),
-                ('cajero', N'Cajero', N'Mostrador contado'),
-                ('operador_ctacte', N'Operador Cta Cte', N'Cuenta corriente'),
-                ('picadora', N'Picadora/Correctora', N'Edición de textos'),
-                ('jefe_publicidad', N'Jefe de Publicidad', N'Supervisión de pauta'),
-                ('productor', N'Productor', N'Carga restringida'),
-                ('diagramacion', N'Diagramación/Taller', N'Solo lectura pauta'),
-                ('reportes', N'Reportes', N'Solo lectura reportes')
-            ) AS s (Codigo, Nombre, Descripcion)
-            ON t.Codigo = s.Codigo
-            WHEN NOT MATCHED BY TARGET THEN
-                INSERT (Codigo, Nombre, Descripcion, Activo)
-                VALUES (s.Codigo, s.Nombre, s.Descripcion, 1);
-            """;
-        await _connection.ExecuteAsync(sql);
-    }
 }

tests/SIGCM2.Application.Tests/Rubros/RubroRepositoryTests.cs

@@ -1,73 +1,37 @@
 using Dapper;
-using Microsoft.Data.SqlClient;
-using Respawn;
 using SIGCM2.Domain.Entities;
 using SIGCM2.Infrastructure.Persistence;
+using SIGCM2.TestSupport;
 
 namespace SIGCM2.Application.Tests.Rubros;
 
 /// <summary>
-/// Integration tests for RubroRepository against SIGCM2_Test.
+/// Integration tests for RubroRepository against SIGCM2_Test_App.
-/// TDD: RED written before implementation, GREEN after RubroRepository was created.
+/// Uses shared SqlTestFixture via [Collection("Database")] — fixture maneja Respawn + seeds.
 /// Temporal: after UpdateAsync, dbo.Rubro_History MUST have ≥1 row for that Id.
 /// </summary>
 [Collection("Database")]
 public class RubroRepositoryTests : IAsyncLifetime
 {
-    private const string ConnectionString =
+    private readonly SqlTestFixture _db;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
-
-    private SqlConnection _connection = null!;
-    private Respawner _respawner = null!;
     private RubroRepository _repository = null!;
     private TimeProvider _timeProvider = null!;
 
+    public RubroRepositoryTests(SqlTestFixture db)
+    {
+        _db = db;
+    }
+
     public async Task InitializeAsync()
     {
-        _connection = new SqlConnection(ConnectionString);
+        await _db.ResetAndSeedAsync();
-        await _connection.OpenAsync();
 
-        _respawner = await Respawner.CreateAsync(_connection, new RespawnerOptions
+        var factory = new SqlConnectionFactory(TestConnectionStrings.AppTestDb);
-        {
-            DbAdapter = DbAdapter.SqlServer,
-            TablesToIgnore =
-            [
-                new Respawn.Graph.Table("dbo", "Rol"),
-                new Respawn.Graph.Table("dbo", "Permiso"),
-                new Respawn.Graph.Table("dbo", "RolPermiso"),
-                // *_History tables are system-versioned — engine rejects direct DELETE.
-                new Respawn.Graph.Table("dbo", "Usuario_History"),
-                new Respawn.Graph.Table("dbo", "Rol_History"),
-                new Respawn.Graph.Table("dbo", "Permiso_History"),
-                new Respawn.Graph.Table("dbo", "RolPermiso_History"),
-                // ADM-001 (V011): Medio + Seccion are temporal — history tables cannot be directly deleted.
-                new Respawn.Graph.Table("dbo", "Medio_History"),
-                new Respawn.Graph.Table("dbo", "Seccion_History"),
-                // ADM-008 (V013): PuntoDeVenta is temporal.
-                new Respawn.Graph.Table("dbo", "PuntoDeVenta_History"),
-                // ADM-009 (V014): TipoDeIva + IngresosBrutos son temporales.
-                new Respawn.Graph.Table("dbo", "TipoDeIva_History"),
-                new Respawn.Graph.Table("dbo", "IngresosBrutos_History"),
-                new Respawn.Graph.Table("dbo", "TipoDeIva"),
-                new Respawn.Graph.Table("dbo", "IngresosBrutos"),
-                // CAT-001 (V016): Rubro es temporal — history no puede deletearse directo.
-                new Respawn.Graph.Table("dbo", "Rubro_History"),
-            ]
-        });
-
-        await _respawner.ResetAsync(_connection);
-        await SeedRolCanonicalAsync();
-
-        var factory = new SqlConnectionFactory(ConnectionString);
         _repository = new RubroRepository(factory);
         _timeProvider = TimeProvider.System;
     }
 
-    public async Task DisposeAsync()
+    public Task DisposeAsync() => Task.CompletedTask;
-    {
-        await _connection.CloseAsync();
-        await _connection.DisposeAsync();
-    }
 
     // ── AddAsync + GetByIdAsync roundtrip ─────────────────────────────────────
 
@@ -381,7 +345,7 @@ public class RubroRepositoryTests : IAsyncLifetime
         Assert.Equal("Actualizado", result!.Nombre);
         Assert.NotNull(result.FechaModificacion);
 
-        var historyCount = await _connection.ExecuteScalarAsync<int>(
+        var historyCount = await _db.Connection.ExecuteScalarAsync<int>(
             "SELECT COUNT(*) FROM dbo.Rubro_History WHERE Id = @Id", new { Id = id });
 
         Assert.True(historyCount >= 1, $"Expected ≥1 history row for Rubro Id={id}, got {historyCount}");
@@ -423,28 +387,4 @@ public class RubroRepositoryTests : IAsyncLifetime
         Assert.NotNull(result.FechaModificacion);
     }
 
-    // ── helpers ───────────────────────────────────────────────────────────────
-
-    private async Task SeedRolCanonicalAsync()
-    {
-        const string sql = """
-            SET QUOTED_IDENTIFIER ON;
-            MERGE dbo.Rol AS t
-            USING (VALUES
-                ('admin', N'Administrador', N'Supervisor total'),
-                ('cajero', N'Cajero', N'Mostrador contado'),
-                ('operador_ctacte', N'Operador Cta Cte', N'Cuenta corriente'),
-                ('picadora', N'Picadora/Correctora', N'Edición de textos'),
-                ('jefe_publicidad', N'Jefe de Publicidad', N'Supervisión de pauta'),
-                ('productor', N'Productor', N'Carga restringida'),
-                ('diagramacion', N'Diagramación/Taller', N'Solo lectura pauta'),
-                ('reportes', N'Reportes', N'Solo lectura reportes')
-            ) AS s (Codigo, Nombre, Descripcion)
-            ON t.Codigo = s.Codigo
-            WHEN NOT MATCHED BY TARGET THEN
-                INSERT (Codigo, Nombre, Descripcion, Activo)
-                VALUES (s.Codigo, s.Nombre, s.Descripcion, 1);
-            """;
-        await _connection.ExecuteAsync(sql);
-    }
 }

tests/SIGCM2.Application.Tests/SIGCM2.Application.Tests.csproj

@@ -24,10 +24,12 @@
     <ProjectReference Include="..\..\src\api\SIGCM2.Application\SIGCM2.Application.csproj" />
     <ProjectReference Include="..\..\src\api\SIGCM2.Infrastructure\SIGCM2.Infrastructure.csproj" />
     <ProjectReference Include="..\..\src\api\SIGCM2.Domain\SIGCM2.Domain.csproj" />
+    <ProjectReference Include="..\SIGCM2.TestSupport\SIGCM2.TestSupport.csproj" />
   </ItemGroup>
 
   <ItemGroup>
     <Using Include="Xunit" />
+    <Using Include="SIGCM2.TestSupport" />
   </ItemGroup>
 
 </Project>

tests/SIGCM2.Application.Tests/Secciones/SeccionRepositoryTests.cs

@@ -1,64 +1,33 @@
 using Dapper;
-using Microsoft.Data.SqlClient;
-using Respawn;
 using SIGCM2.Domain.Entities;
 using SIGCM2.Infrastructure.Persistence;
+using SIGCM2.TestSupport;
 
 namespace SIGCM2.Application.Tests.Secciones;
 
 /// <summary>
-/// Integration tests for SeccionRepository against SIGCM2_Test.
+/// Integration tests for SeccionRepository against SIGCM2_Test_App.
 /// TDD: RED written before implementation, GREEN after SeccionRepository was created.
 /// Temporal: after UpdateAsync, dbo.Seccion_History MUST have ≥1 row for that Id.
 /// </summary>
 [Collection("Database")]
 public class SeccionRepositoryTests : IAsyncLifetime
 {
-    private const string ConnectionString =
+    private readonly SqlTestFixture _db;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
-
-    private SqlConnection _connection = null!;
-    private Respawner _respawner = null!;
     private SeccionRepository _repository = null!;
     private MedioRepository _medioRepository = null!;
     private int _medioId;
 
+    public SeccionRepositoryTests(SqlTestFixture db)
+    {
+        _db = db;
+    }
+
     public async Task InitializeAsync()
     {
-        _connection = new SqlConnection(ConnectionString);
+        await _db.ResetAndSeedAsync();
-        await _connection.OpenAsync();
 
-        _respawner = await Respawner.CreateAsync(_connection, new RespawnerOptions
+        var factory = new SqlConnectionFactory(TestConnectionStrings.AppTestDb);
-        {
-            DbAdapter = DbAdapter.SqlServer,
-            TablesToIgnore =
-            [
-                new Respawn.Graph.Table("dbo", "Rol"),
-                new Respawn.Graph.Table("dbo", "Permiso"),
-                new Respawn.Graph.Table("dbo", "RolPermiso"),
-                // *_History tables are system-versioned — engine rejects direct DELETE.
-                new Respawn.Graph.Table("dbo", "Usuario_History"),
-                new Respawn.Graph.Table("dbo", "Rol_History"),
-                new Respawn.Graph.Table("dbo", "Permiso_History"),
-                new Respawn.Graph.Table("dbo", "RolPermiso_History"),
-                // ADM-001 (V011): Medio + Seccion are temporal — history tables cannot be directly deleted.
-                new Respawn.Graph.Table("dbo", "Medio_History"),
-                new Respawn.Graph.Table("dbo", "Seccion_History"),
-                new Respawn.Graph.Table("dbo", "PuntoDeVenta_History"),
-                // ADM-009 (V014): TipoDeIva + IngresosBrutos son temporales.
-                new Respawn.Graph.Table("dbo", "TipoDeIva_History"),
-                new Respawn.Graph.Table("dbo", "IngresosBrutos_History"),
-                new Respawn.Graph.Table("dbo", "TipoDeIva"),
-                new Respawn.Graph.Table("dbo", "IngresosBrutos"),
-                // CAT-001 (V016): Rubro es temporal — history no puede deletearse directo.
-                new Respawn.Graph.Table("dbo", "Rubro_History"),
-            ]
-        });
-
-        await _respawner.ResetAsync(_connection);
-        await SeedRolCanonicalAsync();
-
-        var factory = new SqlConnectionFactory(ConnectionString);
         _repository = new SeccionRepository(factory);
         _medioRepository = new MedioRepository(factory);
 
@@ -66,11 +35,7 @@ public class SeccionRepositoryTests : IAsyncLifetime
         _medioId = await _medioRepository.AddAsync(Medio.ForCreation("TESTMEDIO", "Medio de Prueba", TipoMedio.Diario, null));
     }
 
-    public async Task DisposeAsync()
+    public Task DisposeAsync() => Task.CompletedTask;
-    {
-        await _connection.CloseAsync();
-        await _connection.DisposeAsync();
-    }
 
     // ── AddAsync + GetByIdAsync roundtrip ─────────────────────────────────────
 
@@ -173,7 +138,7 @@ public class SeccionRepositoryTests : IAsyncLifetime
         var updated = original!.WithUpdatedProfile("Historial v2", "suplementos", DateTime.UtcNow);
         await _repository.UpdateAsync(updated);
 
-        var historyCount = await _connection.ExecuteScalarAsync<int>(
+        var historyCount = await _db.Connection.ExecuteScalarAsync<int>(
             "SELECT COUNT(*) FROM dbo.Seccion_History WHERE Id = @Id", new { Id = id });
 
         Assert.True(historyCount >= 1, $"Expected ≥1 history row for Seccion Id={id}, got {historyCount}");
@@ -236,29 +201,4 @@ public class SeccionRepositoryTests : IAsyncLifetime
         Assert.Equal(3, result.Total);
         Assert.Equal(2, result.Items.Count);
     }
-
-    // ── helpers ───────────────────────────────────────────────────────────────
-
-    private async Task SeedRolCanonicalAsync()
-    {
-        const string sql = """
-            SET QUOTED_IDENTIFIER ON;
-            MERGE dbo.Rol AS t
-            USING (VALUES
-                ('admin', N'Administrador', N'Supervisor total'),
-                ('cajero', N'Cajero', N'Mostrador contado'),
-                ('operador_ctacte', N'Operador Cta Cte', N'Cuenta corriente'),
-                ('picadora', N'Picadora/Correctora', N'Edición de textos'),
-                ('jefe_publicidad', N'Jefe de Publicidad', N'Supervisión de pauta'),
-                ('productor', N'Productor', N'Carga restringida'),
-                ('diagramacion', N'Diagramación/Taller', N'Solo lectura pauta'),
-                ('reportes', N'Reportes', N'Solo lectura reportes')
-            ) AS s (Codigo, Nombre, Descripcion)
-            ON t.Codigo = s.Codigo
-            WHEN NOT MATCHED BY TARGET THEN
-                INSERT (Codigo, Nombre, Descripcion, Activo)
-                VALUES (s.Codigo, s.Nombre, s.Descripcion, 1);
-            """;
-        await _connection.ExecuteAsync(sql);
-    }
 }

tests/SIGCM2.Application.Tests/TiposDeIva/List/ListTiposDeIvaQueryHandlerTests.cs

@@ -42,7 +42,7 @@ public class ListTiposDeIvaQueryHandlerTests
 
         var result = await _handler.Handle(new ListTiposDeIvaQuery(1, 10, null, null));
 
-        Assert.Equal(0, result.Items.Count);
+        Assert.Empty(result.Items);
         Assert.Equal(0, result.Total);
     }
 

tests/SIGCM2.TestSupport/SqlTestFixture.cs

@@ -16,7 +16,14 @@ public sealed class SqlTestFixture : IAsyncLifetime
     private SqlConnection _connection = null!;
     private Respawner _respawner = null!;
 
-    public SqlTestFixture(string connectionString)
+    /// <summary>Parameterless ctor for xUnit ICollectionFixture — uses SIGCM2_Test_App.</summary>
+    public SqlTestFixture() : this(TestConnectionStrings.AppTestDb) { }
+
+    /// <summary>
+    /// Explicit connection string ctor — used by TestWebAppFactory (same assembly).
+    /// Internal to satisfy xUnit's "single public constructor" rule for ICollectionFixture.
+    /// </summary>
+    internal SqlTestFixture(string connectionString)
     {
         _connectionString = connectionString;
     }
@@ -77,7 +84,7 @@ public sealed class SqlTestFixture : IAsyncLifetime
                 // Seed de TipoDeIva e IngresosBrutos son datos de referencia — no limpiar con Respawn.
                 new Respawn.Graph.Table("dbo", "TipoDeIva"),
                 new Respawn.Graph.Table("dbo", "IngresosBrutos"),
-                // CAT-001 (V016): Rubro es system-versioned — Respawn no puede DELETE su history.
+                // CAT-001 (V016): Rubro es temporal — history no puede deletearse directo.
                 new Respawn.Graph.Table("dbo", "Rubro_History"),
             ]
         });
@@ -85,6 +92,13 @@ public sealed class SqlTestFixture : IAsyncLifetime
         await ResetAndSeedAsync();
     }
 
+    /// <summary>
+    /// Exposes the open SqlConnection for tests that need to run ad-hoc queries
+    /// (e.g. seed extra rows, assert history tables). Connection is opened during
+    /// InitializeAsync and closed in DisposeAsync.
+    /// </summary>
+    public SqlConnection Connection => _connection;
+
     public async Task ResetAndSeedAsync()
     {
         await _respawner.ResetAsync(_connection);
@@ -787,11 +801,70 @@ public sealed class SqlTestFixture : IAsyncLifetime
         // desde SeedPermisosCanonicalAsync / SeedRolPermisosCanonicalAsync (post-respawn).
     }
 
+    /// <summary>
+    /// UDT-011 (V015): applies dbo.v_AuditEvent_Local + dbo.v_SecurityEvent_Local views
+    /// idempotently to the test database. Mirrors V015__create_local_timezone_views.sql.
+    /// Views expose OccurredAtLocal (DateTimeOffset, offset -03:00 Argentina Standard Time).
+    /// Note: CREATE VIEW cannot be inside IF...BEGIN...END directly — uses EXEC('CREATE VIEW ...').
+    /// </summary>
+    private async Task EnsureV015SchemaAsync()
+    {
+        const string createAuditEventLocal = """
+            IF OBJECT_ID('dbo.v_AuditEvent_Local', 'V') IS NULL
+            BEGIN
+                EXEC('
+                    CREATE VIEW dbo.v_AuditEvent_Local AS
+                    SELECT
+                        Id,
+                        OccurredAt,
+                        OccurredAt AT TIME ZONE ''UTC'' AT TIME ZONE ''Argentina Standard Time'' AS OccurredAtLocal,
+                        ActorUserId,
+                        ActorRoleId,
+                        Action,
+                        TargetType,
+                        TargetId,
+                        CorrelationId,
+                        IpAddress,
+                        UserAgent,
+                        Metadata
+                    FROM dbo.AuditEvent;
+                ');
+            END
+            """;
+
+        const string createSecurityEventLocal = """
+            IF OBJECT_ID('dbo.v_SecurityEvent_Local', 'V') IS NULL
+            BEGIN
+                EXEC('
+                    CREATE VIEW dbo.v_SecurityEvent_Local AS
+                    SELECT
+                        Id,
+                        OccurredAt,
+                        OccurredAt AT TIME ZONE ''UTC'' AT TIME ZONE ''Argentina Standard Time'' AS OccurredAtLocal,
+                        ActorUserId,
+                        AttemptedUsername,
+                        SessionId,
+                        Action,
+                        Result,
+                        FailureReason,
+                        IpAddress,
+                        UserAgent,
+                        Metadata
+                    FROM dbo.SecurityEvent;
+                ');
+            END
+            """;
+
+        await _connection.ExecuteAsync(createAuditEventLocal);
+        await _connection.ExecuteAsync(createSecurityEventLocal);
+    }
+
     /// <summary>
     /// CAT-001 (V016): applies dbo.Rubro schema + temporal + filtered unique index + covering index
-    /// + permiso 'catalogo:rubros:gestionar' idempotentemente. Mirrors V016__create_rubro.sql.
+    /// idempotentemente. Mirrors V016__create_rubro.sql.
     /// Nota: COLLATE debe ir ANTES de NOT NULL — parser de SQL Server 2019 es estricto con ese orden.
-    /// Permiso y asignación a admin se siembran desde SeedPermisosCanonicalAsync / SeedRolPermisosCanonicalAsync.
+    /// Permiso 'catalogo:rubros:gestionar' y asignación a admin se siembran
+    /// desde SeedPermisosCanonicalAsync / SeedRolPermisosCanonicalAsync (post-respawn).
     /// </summary>
     private async Task EnsureV016SchemaAsync()
     {
@@ -859,65 +932,5 @@ public sealed class SqlTestFixture : IAsyncLifetime
         await _connection.ExecuteAsync(setRubroVersioning);
         await _connection.ExecuteAsync(createUqIndex);
         await _connection.ExecuteAsync(createCoveringIndex);
-        // Permiso 'catalogo:rubros:gestionar' y asignación a admin se siembran
-        // desde SeedPermisosCanonicalAsync / SeedRolPermisosCanonicalAsync (post-respawn).
-    }
-
-    /// <summary>
-    /// UDT-011 (V015): applies dbo.v_AuditEvent_Local + dbo.v_SecurityEvent_Local views
-    /// idempotently to the test database. Mirrors V015__create_local_timezone_views.sql.
-    /// Views expose OccurredAtLocal (DateTimeOffset, offset -03:00 Argentina Standard Time).
-    /// Note: CREATE VIEW cannot be inside IF...BEGIN...END directly — uses EXEC('CREATE VIEW ...').
-    /// </summary>
-    private async Task EnsureV015SchemaAsync()
-    {
-        const string createAuditEventLocal = """
-            IF OBJECT_ID('dbo.v_AuditEvent_Local', 'V') IS NULL
-            BEGIN
-                EXEC('
-                    CREATE VIEW dbo.v_AuditEvent_Local AS
-                    SELECT
-                        Id,
-                        OccurredAt,
-                        OccurredAt AT TIME ZONE ''UTC'' AT TIME ZONE ''Argentina Standard Time'' AS OccurredAtLocal,
-                        ActorUserId,
-                        ActorRoleId,
-                        Action,
-                        TargetType,
-                        TargetId,
-                        CorrelationId,
-                        IpAddress,
-                        UserAgent,
-                        Metadata
-                    FROM dbo.AuditEvent;
-                ');
-            END
-            """;
-
-        const string createSecurityEventLocal = """
-            IF OBJECT_ID('dbo.v_SecurityEvent_Local', 'V') IS NULL
-            BEGIN
-                EXEC('
-                    CREATE VIEW dbo.v_SecurityEvent_Local AS
-                    SELECT
-                        Id,
-                        OccurredAt,
-                        OccurredAt AT TIME ZONE ''UTC'' AT TIME ZONE ''Argentina Standard Time'' AS OccurredAtLocal,
-                        ActorUserId,
-                        AttemptedUsername,
-                        SessionId,
-                        Action,
-                        Result,
-                        FailureReason,
-                        IpAddress,
-                        UserAgent,
-                        Metadata
-                    FROM dbo.SecurityEvent;
-                ');
-            END
-            """;
-
-        await _connection.ExecuteAsync(createAuditEventLocal);
-        await _connection.ExecuteAsync(createSecurityEventLocal);
     }
 }

tests/SIGCM2.TestSupport/TestConnectionStrings.cs

@@ -0,0 +1,20 @@
+using System.Runtime.CompilerServices;
+
+[assembly: InternalsVisibleTo("SIGCM2.Api.Tests")]
+
+namespace SIGCM2.TestSupport;
+
+/// <summary>
+/// Centralized connection string constants for integration test databases.
+/// Single source of truth — change server/credentials here only.
+/// </summary>
+public static class TestConnectionStrings
+{
+    /// <summary>Used by SIGCM2.Application.Tests via SqlTestFixture (parameterless ctor).</summary>
+    public const string AppTestDb =
+        "Server=TECNICA3;Database=SIGCM2_Test_App;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
+
+    /// <summary>Used by SIGCM2.Api.Tests via TestWebAppFactory.</summary>
+    public const string ApiTestDb =
+        "Server=TECNICA3;Database=SIGCM2_Test_Api;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
+}

tests/SIGCM2.TestSupport/TestWebAppFactory.cs

@@ -13,12 +13,11 @@ namespace SIGCM2.TestSupport;
 
 /// <summary>
 /// WebApplicationFactory for integration tests against SIGCM2.Api.
-/// Uses SIGCM2_Test database (separate from production SIGCM2).
+/// Uses SIGCM2_Test_Api database (isolated from Application.Tests which uses SIGCM2_Test_App).
 /// </summary>
 public sealed class TestWebAppFactory : WebApplicationFactory<Program>, IAsyncLifetime
 {
-    private const string TestConnectionString =
+    private const string TestConnectionString = TestConnectionStrings.ApiTestDb;
-        "Server=TECNICA3;Database=SIGCM2_Test;User Id=desarrollo;Password=desarrollo2026;TrustServerCertificate=True;";
 
     // Resolved once — absolute paths independent of working directory
     private static readonly string RepoRoot = ResolveRepoRoot();