test(udt-001): backend unit and integration tests (30 tests)

tests/SIGCM2.TestSupport/SqlTestFixture.cs

@@ -0,0 +1,66 @@
+using Dapper;
+using Microsoft.Data.SqlClient;
+using Respawn;
+using Xunit;
+
+namespace SIGCM2.TestSupport;
+
+/// <summary>
+/// Manages a real SQL Server test database.
+/// Resets state between test runs using Respawn.
+/// Seeds the admin user after each reset.
+/// </summary>
+public sealed class SqlTestFixture : IAsyncLifetime
+{
+    private readonly string _connectionString;
+    private SqlConnection _connection = null!;
+    private Respawner _respawner = null!;
+
+    public SqlTestFixture(string connectionString)
+    {
+        _connectionString = connectionString;
+    }
+
+    public async Task InitializeAsync()
+    {
+        _connection = new SqlConnection(_connectionString);
+        await _connection.OpenAsync();
+
+        _respawner = await Respawner.CreateAsync(_connection, new RespawnerOptions
+        {
+            DbAdapter = DbAdapter.SqlServer
+        });
+
+        await ResetAndSeedAsync();
+    }
+
+    public async Task ResetAndSeedAsync()
+    {
+        await _respawner.ResetAsync(_connection);
+        await SeedAdminAsync();
+    }
+
+    public async Task DisposeAsync()
+    {
+        if (_connection is not null)
+        {
+            await _connection.CloseAsync();
+            await _connection.DisposeAsync();
+        }
+    }
+
+    private async Task SeedAdminAsync()
+    {
+        const string sql = """
+            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
+            );
+            """;
+        await _connection.ExecuteAsync(sql);
+    }
+}