In this speed coding session, we write unit tests for a Swift ViewModel built with the MVVM architecture and powered by Combine and @MainActor concurrency. Youāll see how to: ā Write precise and meaningful unit tests using XCTest š Test async @MainActor functions with Combineās @Published properties š§Ŗ Mock dependencies like ChinesePhraseSaver, Loader, and Deleter š Validate onLoad() and onTapFavorite() logic ā ļø Handle error states with shouldShowErrorAlert š§¼ Ensure correctness using behavior-driven test naming We aim for properly crafted unit tests that naturally lead to high code coverage, making your codebase more robust and regression-proof. šÆ Difficulty: Intermediate to Advanced
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