Practical iOS Unit Testing with XCTest

Writing code is only half the battle; ensuring it works reliably under all conditions is what separates good developers from great ones. Unit testing is the industry-standard way to guarantee your iOS apps remain stable as they grow. This text-based course guides you through the fundamentals of unit testing in iOS using the native XCTest framework. You will transition from writing untested code to designing testable Swift applications, adopting modern testing paradigms that keep your code clean and maintainable. What you'll learn: - Understand the core concepts of test-driven development and the XCTest lifecycle. - Write clear, isolated unit tests for Swift classes, structs, and methods. - Apply dependency injection techniques to mock and stub network requests and database layers. - Test modern asynchronous Swift code using async/await and expectations. - Measure and analyze code coverage to identify untested paths in your codebase. - Structure your test suites for long-term maintainability and readability. Starting with basic definitions and test structure, the course progresses through real-world testing scenarios, including mocking dependencies and handling asynchronous operations. You will read clear explanations and analyze practical Swift code snippets designed to build your confidence step-by-step. This course is designed for beginner iOS developers who want to start testing their code. No prior testing experience is required, though a basic understanding of Swift is helpful. Start writing cleaner, more reliable iOS code today.