Unit Testing Swift Mobile App from Udemy

Unit Testing is a must-have skill and this video course is about Unit Testing Swift code.

If you take this video course, you will learn how to follow a Test Driven Development process to implement a feature for an iOS mobile app built with Swift.

This video course starts with Unit Test basics and continues with a very practical set of lessons that demonstrates how to follow a Test-Driven process to implement the User Signup feature in the Model View Presenter mobile app.

By the end of this video course, you will have a very clear understanding of how to write Unit Tests and UI Tests for your Swift mobile application, and you will be able to test even very complex Swift code.

If you are a freelance developer you might postpone learning how to unit test iOS app for some time. But if you are planning to join a bigger team, then unit testing is a must-have skill for you to be able to work on important app features.

Have a look through the curriculum of this course to see what it covers. Watch a few sample video lessons. And if you have questions, I am always here to help you.

What's inside

Learning objectives

Unit test ios mobile app
Xctest framework
Create, run and debug unit tests

Mock dependencies
Use dependency injection
Ui testing

Unit test ios mobile app
Xctest framework
Create, run and debug unit tests
Mock dependencies
Use dependency injection
Ui testing

Syllabus

Introduction

Source Code

Basics of Unit Testing in Xcode

Testing Pyramid

The F.I.R.S.T Principle

Test-Driven Development Lifecycle

Enable Unit Tests in Xcode Project

The Default Unit Test Case Class Explained

The addTeardownBlock()

Creating a New Test Case Class

Ways to Run Unit Test in Xcode

The Default Order of Unit Tests

Unit Test Naming Requirements

Ways to Disable or Skip Unit Test

Viewing Test Results

Code Coverage

100% Code Coverage

Test Method Code Structure. Arrange, Act, Assert.

Enabling the Failure Debugger Breakpoint

Parallel Distributed Testing on Multiple Simulator Clones

TDD. Implementing Model Validator

Test That User First Name is Valid

Test for a very short First Name

Test for a very long First Name

Challenge: Apply TDD to Implement Validation of Last Name and Email Address

Test if user passwords match

Test if user passwords do not match

Test Code in Isolation

Dependency Injection

Use of Protocols

Test Toubles - Fake, Mock, Stub, Dummy

TDD. Implementing Network Service Class.

Create Initial SignupWebServiceTests Unit Test class

Create Initial SignupWebService Class

Implementing SignupFormRequestModel

Adding CompletionHandler to Signup Method Signature

Implementing the Initial SignupResponseModel

Implementing the Initial SignupErrors Enum

Organize Project Folders

Assert that the Response Status is Equal to "ok"

Adding an Expectation and an Asynchronous Wait Method

Inject URL String

Prepare URL

Prepare URL Request Object

Create DataTask

Inject URLSession

Return Response Model

Trying how it works with Real HTTP Request

Mock URLProtocol

Make URLSession use MockURLProtocol

Handle Unknown JSON Response Model

When Empty URL Provided Return a Specific Error Message

Refactor SignupErrors Enum

Test URL Request Failure

Check Code Coverage

TDD. Implementing Presenter Class in MVP Application

Create Presenter Unit Test Class and Test Method

Create Signup Form Model Struct

Create SignupPresenter class and the processUserSignup() method

Create Initial MockSignupModelValidator class

Create Validator Protocol

Inject Validator Mock and validate each property

Refactor

Unit Test to verify the signup() was called

Create SignupWebService Mock Class

Signup Web Service Protocol

Inject Signup Web Service Mock in to Presenter

Unit Test to assert that Presenter calls a method on View Delagate

Create View Delegate Protocol and MockSignupViewDelegate

Inject View Delegate into Presenter

Counting number of times a method was called

Verify that successfulSignup() called one time only

Coding Challenge

Assert that Presenter calls a Error Handler on View Delagate

Review Code Coverage of Presenter Class

Unit Testing View Controller

Create a New Test Class and a Test Method

Test UITextFields are initially empty

Test UITextField has a referencing outlet

Test UIButton has @IBAction assigned to it

Test UIButton Action invokes code in Presenter

Create MockSignupPresenter class

Inject MockSignupPresenter into View Controller

Testing Old or Legacy Code

Refactor Massive View Controllers

Use Protocols and Dependency Injection

Adding code to existing methods

Break large functions into smaller ones

Wrapping existing classes. Decorator pattern.

Examples: Ways to Load UIViewController in a Unit Test

Good to know

Know what's good

, what to watch for

, and possible dealbreakers

Covers unit testing, dependency injection, handling of asynchronous code, testing API calls, and testing UI elements

Relevant to iOS and mobile app development professionals

Taught by an experienced iOS developer with a strong understanding of unit testing

Requires some prior experience with iOS development and unit testing

Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in Unit Testing Swift Mobile App with these activities:

Follow a tutorial on unit testing in Swift

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Following a tutorial on unit testing in Swift can provide a structured approach to learning the concepts and best practices.

Browse courses on Unit Testing

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Search for a tutorial on unit testing in Swift
Follow the steps in the tutorial
Try to implement the concepts you learn in your own code

Attend a workshop on unit testing in Swift

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Attending a workshop can provide a structured and immersive learning experience on unit testing in Swift.

Browse courses on Unit Testing

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Search for a workshop on unit testing in Swift
Register for the workshop
Attend the workshop

Join a study group or online forum for unit testing

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Engaging with peers can provide valuable insights, support, and motivation for learning about unit testing.

Browse courses on Unit Testing

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Search for a study group or online forum on unit testing
Join the group or forum
Participate in discussions and ask questions

Six other activities

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Show all nine activities

Practice writing unit tests

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Writing unit tests is key to developing robust Swift applications. Practice writing unit tests to reinforce your understanding of the concepts covered in this course.

Browse courses on Unit Testing

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Create a new Xcode project
Write a simple Swift function
Write a unit test for the function
Run the unit test

Develop a personal project that utilizes unit testing

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Building a personal project can provide practical experience in applying unit testing to a real-world scenario.

Browse courses on Unit Testing

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Come up with an idea for a personal project
Design and implement the project
Write unit tests for the project
Deploy and test the project

Develop a unit testing framework for a Swift project

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Developing a unit testing framework can help you gain a deeper understanding of the principles and implementation of unit testing.

Browse courses on Unit Testing

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Design the architecture of the framework
Implement the core functionality of the framework
Write unit tests for the framework
Document the framework

Write a blog post or article about unit testing in Swift

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Writing about unit testing can help you reinforce your understanding of the concepts and share your knowledge with others.

Browse courses on Unit Testing

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Choose a topic related to unit testing in Swift
Research and gather information
Write the blog post or article
Publish and promote your content

Participate in a hackathon or coding competition that involves unit testing

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Participating in a hackathon or coding competition can provide a fun and challenging way to apply your unit testing skills in a real-world setting.

Browse courses on Unit Testing

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Find a hackathon or coding competition that involves unit testing
Form a team or work individually
Develop a solution to the problem
Submit your solution

Mentor a junior developer on unit testing in Swift

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Mentoring others can solidify your understanding of unit testing while also helping others learn and grow.

Browse courses on Unit Testing

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Find a junior developer who is interested in learning about unit testing
Establish a regular meeting schedule
Provide guidance and support
Review code and provide feedback

Career center

Learners who complete Unit Testing Swift Mobile App will develop knowledge and skills that may be useful to these careers:

iOS Developer

iOS Developers design, develop, and test iOS applications. A course on "Unit Testing Swift Mobile App" is very helpful to one who wishes to pursue a career as an iOS Developer because it teaches learners the whole process of writing Unit Tests and UI Tests for Swift mobile apps, which is a key skill for an iOS Developer to have.

See salaries and explore the career path for iOS Developer

Mobile Application Developer

Mobile Application Developers design, develop, and test mobile applications. A course on "Unit Testing Swift Mobile App" is very helpful to one who wishes to pursue a career as a Mobile Application Developer because it teaches learners the whole process of writing Unit Tests and UI Tests for Swift mobile apps, which is a key skill for a Mobile Application Developer to have.

See salaries and explore the career path for Mobile Application Developer

Software Development Engineer in Test

Software Development Engineers in Test (SDETs) are responsible for testing software applications and ensuring their quality. A course on "Unit Testing Swift Mobile App" is very helpful to one who wishes to pursue a career as an SDET because it builds a strong foundation in unit testing, which is a key part of software testing.

See salaries and explore the career path for Software Development Engineer in Test

Quality Assurance Analyst

Quality Assurance Analysts (QAAs) are responsible for ensuring the quality of software products. A course on "Unit Testing Swift Mobile App" is very helpful to one who wishes to pursue a career as a QAA because it provides a comprehensive overview of unit testing, which is a critical skill for a QAA to have.

See salaries and explore the career path for Quality Assurance Analyst

Software Tester

Software Testers test software applications and systems to ensure their quality. A course on "Unit Testing Swift Mobile App" is helpful to one who wishes to pursue a career as a Software Tester because it provides a comprehensive overview of unit testing, which is a critical skill for a Software Tester to have.

See salaries and explore the career path for Software Tester

Software Engineer

Software Engineers design, develop, test, deploy, and maintain software programs and systems. A course on "Unit Testing Swift Mobile App" is very helpful to one who wishes to pursue a career as a Software Engineer or a similar role because mobile application development is a major branch of software engineering. This course teaches learners the whole process of writing Unit Tests and UI Tests for Swift mobile apps, which is a very useful skill for a Software Engineer to have.

See salaries and explore the career path for Software Engineer

Computer Programmer

Computer Programmers write, test, and maintain the code that makes software programs and applications work. A course on "Unit Testing Swift Mobile App" is helpful to one who wishes to pursue a career as a Computer Programmer because it teaches learners the whole process of writing Unit Tests and UI Tests for Swift mobile apps. Even though this course is specific to iOS, many of the concepts and principles can be applied to other programming languages and platforms.

See salaries and explore the career path for Computer Programmer

Android Developer

Android Developers design, develop, and test Android applications. While a course on "Unit Testing Swift Mobile App" is not directly related to Android development, it may be useful to one who wishes to pursue a career as an Android Developer because it provides a comprehensive overview of unit testing, which is a key skill for a mobile application developer in general to have.

See salaries and explore the career path for Android Developer

Web Developer

Web Developers design, develop, and test websites. While a course on "Unit Testing Swift Mobile App" is not directly related to web development, it may be useful to one who wishes to pursue a career as a Web Developer because it provides a comprehensive overview of unit testing, which is a key skill for a web developer in general to have.

See salaries and explore the career path for Web Developer

Technical Support Specialist

Technical Support Specialists provide technical support to users of software applications and systems. A course on "Unit Testing Swift Mobile App" may be useful to one who wishes to pursue a career as a Technical Support Specialist because it provides a comprehensive overview of unit testing, which is a skill that can be helpful in troubleshooting software issues.

See salaries and explore the career path for Technical Support Specialist

IT Consultant

IT Consultants provide consulting services to businesses on how to use and implement software and technology solutions. A course on "Unit Testing Swift Mobile App" may be useful to one who wishes to pursue a career as an IT Consultant because it provides a comprehensive overview of unit testing, which is a skill that can be helpful in evaluating and recommending software solutions to clients.

See salaries and explore the career path for IT Consultant

Project Manager

Project Managers plan, execute, and close out projects. A course on "Unit Testing Swift Mobile App" may be useful to one who wishes to pursue a career as a Project Manager because it provides a comprehensive overview of unit testing, which is a skill that can be helpful in managing software development projects.

See salaries and explore the career path for Project Manager

Product Manager

Product Managers plan and manage the development of software products. A course on "Unit Testing Swift Mobile App" may be useful to one who wishes to pursue a career as a Product Manager because it provides a comprehensive overview of unit testing, which is a skill that can be helpful in managing the development of software products.

See salaries and explore the career path for Product Manager

Business Analyst

Business Analysts analyze business needs and develop solutions to improve business processes. A course on "Unit Testing Swift Mobile App" may be useful to one who wishes to pursue a career as a Business Analyst because it provides a comprehensive overview of unit testing, which is a skill that can be helpful in analyzing and improving software-based business processes.

See salaries and explore the career path for Business Analyst

Data Analyst

Data Analysts collect, clean, and analyze data to identify trends and patterns. A course on "Unit Testing Swift Mobile App" may be useful to one who wishes to pursue a career as a Data Analyst because it provides a comprehensive overview of unit testing, which is a skill that can be helpful in analyzing and verifying data-driven insights.

See salaries and explore the career path for Data Analyst