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Brett Romero

The ability to remove external dependencies from your Swift app when testing is one of the pillars of creating reliable iOS apps. This course teaches how to remove external dependencies and elevate your unit testing with mocks and stubs.

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The ability to remove external dependencies from your Swift app when testing is one of the pillars of creating reliable iOS apps. This course teaches how to remove external dependencies and elevate your unit testing with mocks and stubs.

At the core of unit testing any Swift app is a thorough knowledge of how to create small, fast, and isolated tests that don’t depend on external systems. In this course, Advanced Unit Testing with Swift iOS Through Mocks and Stubs, you’ll learn how to remove external dependencies in your tests through the use of mocks and stubs. First, you’ll learn what mocks and stubs are. Next, you’ll explore how to mock iOS framework classes and remove their dependencies. Finally, you’ll discover how to inject your newly created mocks into production classes, which allows for the use of one context in production and another in testing. When you’re finished with this course, you’ll have a foundational understanding of Swift unit testing with mocks and stubs that will help you as you move forward to building more reliable Swift apps.

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What's inside

Syllabus

Course Overview
Why​ ​Do​ ​We​ ​Need​ ​Mocks​ ​and​ ​Stubs?
Modifying Existing Code for Dependency Injection
Simulating NSUserDefaults Functionality by Mocking It
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Testing Asynchronous Calls
Removing Core Data Integration by Mocking It

Good to know

Know what's good
, what to watch for
, and possible dealbreakers
Develops industry-standard knowledge of how to isolate and control outside dependencies in unit testing software
Provides a deep foundation in unit testing theory with Swift in the context of iOS development
Taught by highly experienced engineers which is rare for a course of this type
Emphasizes the importance of creating reliable iOS apps, which is critical for any developer working with iOS
Requires previous experience with iOS development, potentially limiting audience
May not be suitable for the complete beginner who has yet to gain experience with Swift development

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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 Advanced Unit Testing with Swift​ iOS Through Mocks and Stubs with these activities:
Review existing unit testing knowledge
Solidify your understanding of unit testing through a review of your existing knowledge and review of online resources. This will prepare you for the more advanced techniques you will learn throughout this course.
Browse courses on Unit Testing
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  • Review your notes from previous unit testing courses or tutorials.
  • Read online articles and tutorials about unit testing best practices.
Reach out to experienced iOS developers for mentorship
Seeking guidance from experienced iOS developers can accelerate your learning and help you avoid common pitfalls. Mentors can provide valuable insights, advice, and support throughout your learning journey.
Browse courses on iOS Development
Show steps
  • Identify experienced iOS developers in your network or online communities.
  • Reach out to them and express your interest in mentorship.
  • Meet with your mentor regularly to discuss your progress and seek feedback.
Join a study group or online community focused on iOS unit testing
Connecting with other learners who are also interested in unit testing can provide you with valuable support and motivation. You can share knowledge, ask questions, and collaborate on projects.
Browse courses on iOS Development
Show steps
  • Search for online communities or forums dedicated to iOS development.
  • Join a study group or discussion thread specifically focused on unit testing.
  • Introduce yourself and share your goals with the group.
Three other activities
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Follow online tutorials on mocking and stubbing
Enroll in online video courses or tutorials that teach you specific techniques on how to mock and stub your code. This will deepen your understanding and give you a chance to practice.
Browse courses on Mocking
Show steps
  • Find a comprehensive online course or tutorial on mocking and stubbing for iOS development.
  • Set aside time each week to work through the material and complete the exercises.
  • Post questions in the course forums if you get stuck.
Practice writing mocks and stubs for different scenarios
Dedicate time to actively write mocks and stubs that will help you solidify your understanding and build confidence in applying these techniques to real-world scenarios.
Browse courses on Mocking
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  • Create a list of different scenarios where you might need to use mocks and stubs in your own iOS development projects.
  • For each scenario, write a mock or stub that you could use to test the corresponding code.
  • Share your mocks and stubs with a mentor or more experienced developer for feedback.
Develop a small iOS app that demonstrates your mocking and stubbing skills
Putting your new knowledge to work in a practical setting will help you master these techniques. This will give you hands-on experience working with mocks and stubs in a real-world application context.
Browse courses on iOS Development
Show steps
  • Choose a simple app idea that involves using external dependencies.
  • Design your app's architecture and identify the components that you want to mock and stub.
  • Implement your app's functionality, ensuring that you use mocks and stubs where appropriate.
  • Write unit tests for your app, using mocks and stubs to isolate and test individual components.

Career center

Learners who complete Advanced Unit Testing with Swift​ iOS Through Mocks and Stubs will develop knowledge and skills that may be useful to these careers:
Test Automation Engineer
A Test Automation Engineer designs and develops automated software testing tools and scripts. They work with development teams to ensure that software meets requirements and is free of defects. This course is highly relevant to this career as it teaches how to create and use mocks and stubs to remove external dependencies and elevate unit testing.
Software Quality Assurance Engineer
A Software Quality Assurance Engineer designs and executes software tests to ensure that software meets requirements and is free of defects. They work with development teams to identify and fix bugs. This course can help Software Quality Assurance Engineers write better tests by teaching how to remove external dependencies and elevate unit testing with mocks and stubs.
Software Tester
A Software Tester tests software to ensure that it meets requirements and is free of defects. They work with development teams to identify and fix bugs. This course can help Software Testers create more effective and efficient tests by removing external dependencies and elevating unit testing with mocks and stubs.
Quality Assurance Analyst
A Quality Assurance Analyst tests software to ensure that it meets requirements and is free of defects. They work with development teams to identify and fix bugs. This course can help Quality Assurance Analysts create more effective and efficient tests by removing external dependencies and elevating unit testing with mocks and stubs.
Software Test Engineer
A Software Test Engineer designs and executes software tests to ensure that software meets requirements and is free of defects. They work with development teams to identify and fix bugs. This course can help Software Test Engineers write better tests by teaching how to remove external dependencies and elevate unit testing with mocks and stubs.
iOS Developer
An iOS Developer designs, develops, and maintains iOS applications. They work with clients and engineers to understand requirements and translate them into technical specifications. This course can help iOS Developers create more reliable iOS applications through the use of mocks and stubs in testing.
Application Developer
An Application Developer designs, develops, and maintains software applications. They work with clients and engineers to understand requirements and translate them into technical specifications. This course can help Application Developers create more reliable software applications through the use of mocks and stubs in testing.
Software Architect
A Software Architect designs, builds, and maintains software applications. They work with clients and engineers to understand requirements and translate them into technical specifications. This course can help Software Architects create more robust and reliable software through the use of mocks and stubs in testing.
Mobile Developer
A Mobile Developer designs, develops, and maintains mobile applications. They work with clients and engineers to understand requirements and translate them into technical specifications. This course can help Mobile Developers create more reliable mobile applications through the use of mocks and stubs in testing.
Software Engineer
A Software Engineer designs, develops, and maintains software applications. They work with clients and engineers to understand requirements and translate them into technical specifications. This course can help Software Engineers create more reliable software through the use of mocks and stubs in testing.
Computer Programmer
A Computer Programmer designs, develops, and maintains computer programs. They work with clients and engineers to understand requirements and translate them into technical specifications. This course can help Computer Programmers create more reliable software through the use of mocks and stubs in testing.
Web Developer
A Web Developer designs, develops, and maintains websites. They work with clients and engineers to understand requirements and translate them into technical specifications. This course may be useful for this career as it helps build a foundation for understanding how to test and ensure the quality of software.
Systems Analyst
A Systems Analyst designs, develops, and maintains computer systems. They work with clients and engineers to understand requirements and translate them into technical specifications. This course may be useful for this career as it helps build a foundation for understanding how to test and ensure the quality of software.
Database Administrator
A Database Administrator designs, develops, and maintains databases. They work with clients and engineers to understand requirements and translate them into technical specifications. This course may be useful for this career as it helps build a foundation for understanding how to test and ensure the quality of software.
Software Development Manager
A Software Development Manager leads a team of developers who work on software and computer systems. They oversee and guide the development of technology to ensure all components work together seamlessly. This course may be useful for this career as it helps build a foundation for understanding how to test and ensure the quality of software.

Reading list

We've selected 15 books that we think will supplement your learning. Use these to develop background knowledge, enrich your coursework, and gain a deeper understanding of the topics covered in Advanced Unit Testing with Swift​ iOS Through Mocks and Stubs.
Comprehensive guide to unit testing in Swift, covering everything from the basics of unit testing to more advanced topics such as mocking and stubbing. It great resource for anyone who wants to learn more about unit testing in Swift.
Provides a comprehensive guide to the Swift programming language. It great resource for anyone who wants to learn more about the language and how to use it to develop iOS apps.
Provides comprehensive coverage of unit testing concepts and best practices, including how to design tests, write effective assertions, and use mocks and stubs. It is an excellent resource for anyone who wants to improve their unit testing skills.
Provides a comprehensive guide to advanced Swift programming techniques. It great resource for anyone who wants to learn more about the language and how to use it to develop more advanced iOS apps.
Provides a comprehensive overview of design patterns. It covers topics such as creational patterns, structural patterns, and behavioral patterns. It valuable resource for any developer who wants to learn more about design patterns.
Provides an in-depth look at the Swift programming language. It great resource for anyone who wants to learn more about the language and how it works.
Provides a hands-on guide to unit testing in Swift with Xcode. It covers all the essential concepts and techniques, and provides detailed examples.
Provides a comprehensive overview of mocking in iOS development. It covers topics such as how to choose the right mocking framework, how to create mocks, and how to use mocks in unit tests. It valuable resource for any iOS developer who wants to learn more about mocking.
Provides a more accessible overview of design patterns than the previous book. It uses a conversational style and plenty of diagrams to explain complex concepts. It valuable resource for any developer who wants to learn more about design patterns without getting bogged down in the details.
Provides comprehensive coverage of Objective-C best practices. It covers topics such as memory management, object-oriented design, and concurrency. It valuable resource for any Objective-C developer.
Provides a comprehensive guide to functional programming in Swift. It great resource for anyone who wants to learn more about functional programming and how to use it in Swift.
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Provides a comprehensive overview of dependency injection in iOS development. It covers topics such as what dependency injection is, how to use dependency injection, and how to test code that uses dependency injection. It valuable resource for any iOS developer who wants to learn more about dependency injection.
Provides a comprehensive guide to debugging with GDB, the GNU debugger. It great resource for anyone who wants to learn more about debugging in Swift.

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