InfoSys_13Sept25 — SwiftUI Assignment

Overview

SwiftUI app that lists Australian cities grouped by state (collapsible sections).
Implements MVVM, SOLID principles, dependency injection, caching, pull-to-refresh, and supports both light & dark mode.
Includes unit tests and UI tests with mock services for reliable coverage.

Project Structure

• Models: City
• Services:
  • CityService (fetch & cache with JSONDecoder.convertFromSnakeCase)
  • CityServiceProtocol (abstraction for DI)
  • InMemoryCityService (mock for UI tests)
• ViewModels: CitiesViewModel
• Views: ContentView
• Utility: AppConstants (project-level constants, e.g. cache expiry)
• Tests:
  • InfoSys_13Sept25Tests (unit tests with mock services)
  • InfoSys_13Sept25UITests (UI tests with deterministic data)

Features

• au_cities.json is bundled for offline fallback
• Collapsible sections grouped by state
• Reverse order button
• Dark & Light mode (uses system semantic colors, no hard-coded whites/blacks)
• Pull-to-refresh with async/await
• Cache data to disk until manual refresh or expiry
• Unit tests with mock service
• UI tests with stable accessibility identifiers
• MVVM + DI
• SOLID design principles for clean, scalable code

Tech Stack

• Requires iOS 15+ (uses async/await)
• Language: Swift 5.9
• UI Framework: SwiftUI
• Architecture: MVVM, SOLID principles
• Testing: XCTest (Unit & UI tests)
• Minimum iOS: iOS 18+
• IDE: Xcode 16+