cerberodev

import 'dart:async';

/// En este ejemplo:
/// nivel1, nivel3, y nivel4 son funciones asíncronas que simulan completarse correctamente después de 2 segundos.
/// nivel2 simula un error al lanzar una excepción.
/// En la función main, realizamos las operaciones de manera secuencial y manejamos errores para cada nivel con bloques catch.
/// Ten en cuenta que al haber un error en el nivel 2, el código salta directamente al bloque catch sin ejecutar los niveles posteriores. Es esencial recordar que una vez se captura un error en un nivel, la ejecución no continuará hacia los niveles siguientes y se dirigirá al bloque catch.

Future<String> nivel1() async {
  await Future.delayed(Duration(seconds: 2));

cerberodev

import 'package:flutter/material.dart';

const Color darkBlue = Color.fromARGB(255, 18, 32, 47);

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

cerberodev

import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  // This widget is the root of your application.

cerberodev

import 'package:flutter/material.dart';
import 'package:flutter/cupertino.dart';
import 'package:intl/intl.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(

cerberodev

import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override

cerberodev

import 'package:flutter/material.dart';
import 'package:flutter/cupertino.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',

cerberodev

import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override

cerberodev

aws dynamodb create-table \
    --table-name Hero \
    --attribute-definitions \
        AttributeName=ID,AttributeType=S \
        AttributeName=Name,AttributeType=S \
    --key-schema AttributeName=ID,KeyType=HASH AttributeName=Name,KeyType=RANGE \
    --provisioned-throughput ReadCapacityUnits=1,WriteCapacityUnits=1

cerberodev

import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:golden_toolkit/golden_toolkit.dart';
import 'package:tdd/main.dart';

void main() {
  testGoldens('DeviceBuilder - one scenario - default devices', (tester) async {
    final builder = DeviceBuilder()
      ..addScenario(
        widget: MyApp(),

cerberodev

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(