jeremieb/swift-unit-test-instructions Skills

Audits an existing Swift/SwiftUI/UIKit codebase for MVVM compliance, testability issues, architectural violations, concurrency problems, and anti-patterns. Use when user says "audit the codebase", "review the architecture", "why is this hard to test", "onboard to this project", "analyze the code structure", "find issues in the code", or "what needs refactoring".

Reviews Swift, SwiftUI, and UIKit code for MVVM compliance, testing standards, naming conventions, async correctness, and anti-patterns. Produces structured feedback grouped by severity. Use when user says "review this code", "check this PR", "code review", "is this correct", "give me feedback on", "review my implementation", or "what's wrong with this code".

Builds a protocol-based async/await networking layer with URLSession, testable abstractions, error handling, and mock support for Swift projects. Use when user says "add networking", "create an API layer", "fetch data from API", "build a network service", "add URLSession", "implement HTTP requests", "create a REST client", or "set up API calls".

Implements a persistence layer using SwiftData or CoreData following MVVM — models, repository abstraction, and testable in-memory setup. Use when user says "add CoreData", "set up SwiftData", "persist data", "save to database", "add a data model", "create Core Data entities", or "use SwiftData models".

Bootstraps a new Swift/SwiftUI/UIKit project with MVVM architecture, standard folder structure, testing targets, and CLAUDE.md configuration. Use when user says "create a new project", "setup a new app", "start a new iOS project", "scaffold a Swift project", "initialize an Xcode project", or "new SwiftUI app".

Writes unit tests and UI tests for Swift, SwiftUI, and UIKit projects following enterprise or indie testing standards. Use when user says "write tests", "add unit tests", "test this code", "create test cases", "add XCTest", "write Swift Testing tests", "help me test this", or "add tests for". Applies enterprise or indie standard from references/ based on project CLAUDE.md config.

Creates SwiftUI views and screens following MVVM with thin view layers, ViewModel extraction, previews, accessibility support, and loading/error states. Use when user says "create a SwiftUI view", "build a screen", "add a new view", "create a component", "build the UI for", "add a SwiftUI screen", or "make a new SwiftUI page".