Federico Maccaroni fedemkr

The Ultimate Swift Testing Playbook (2024 WWDC Edition, expanded with Apple docs from June 2025)

Updated with info from https://developer.apple.com/documentation/testing fetched via Firecrawl on June 7, 2025.

See also my blog: See also my blog post: https://steipete.me/posts/2025/migrating-700-tests-to-swift-testing

A hands-on, comprehensive guide for migrating from XCTest to Swift Testing and mastering the new framework. This playbook integrates the latest patterns and best practices from WWDC 2024 and official Apple documentation to make your tests more powerful, expressive, and maintainable.

1. Migration & Tooling Baseline

Reset mysql root password in Mac OS:

First Stop MySQL:

Go to: 'System Preferences' >> 'MySQL' and stop MySQL

OR,

sudo /usr/local/mysql/support-files/mysql.server start
sudo /usr/local/mysql/support-files/mysql.server stop

Hexadecimal color code for transparency

How to set transparency with hex value ?

For example, you want to set 40% alpha transparence to #000000 (black color), you need to add 66 like this #66000000.

	/// Gathers progression information of all computations within the `operation` block.
	///
	/// This free function sets the `@TaskLocal` value `Task.unsafeProgress`, which serves as an
	/// indicator to any task in the structure concurrency tree to start gathering progression information.
	/// Functions supporting _progress_ will forward such data into the `progress` handler.
	///
	/// ## Features
	/// - Progress data forwarding to the `progress` handler.
	/// - No locks (and no thread hopping).
	/// - Supports concurrent operations.

	using Xamarin.Forms;

	namespace YourProject.Core.Effects
	{
	public class FrameCornerRadius : RoutingEffect
	{
	public FrameCornerRadius()
	: base("YourProject.FrameCornerRadiusEffect")
	{
	}

	using System;
	using Android.Support.Design.Internal;
	using Android.Support.Design.Widget;

	namespace MyProject.App.Droid.Helpers
	{
	public static class AndroidHelpers
	{
	public static void SetShiftMode(this BottomNavigationView bottomNavigationView, bool enableShiftMode, bool enableItemShiftMode)
	{

	<?xml version="1.0" encoding="UTF-8"?>
	<ContentView xmlns="http://xamarin.com/schemas/2014/forms"
	xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
	x:Class="App.Core.Controls.ExtSearchBar"
	x:Name="Root">
	<Grid>
	<Grid.RowDefinitions>
	<RowDefinition Height="50" />
	</Grid.RowDefinitions>

	using System.Collections;
	using System.Diagnostics;
	using A11YGuide.Controls;
	using A11YGuide.Droid.Helpers;
	using A11YGuide.ViewModels.Search;
	using Android.Support.V7.Widget;
	using Android.Views;
	using Android.Widget;
	using fivenine.Core.Extensions;
	using Xamarin.Forms;

	using System.Threading.Tasks;
	using Newtonsoft.Json;
	using Refit;
	using System.Net.Http;
	using System;

	namespace wms_xamarin
	{
	public class LoginApi
	{

	using System;
	using System.Collections.Generic;
	using System.Collections.Specialized;
	using MvvmCross.Binding.Attributes;
	using MvvmCross.Core.ViewModels;
	using MvvmCross.Platform.WeakSubscription;
	using UIKit;

	namespace MvvmCross.StackView
	{