A Swift package for simple dependency injection that also supports Swift UI previews.

Features

• ✅ Built upon the amazing Factory
• ✅ Tiny footprint (Injector.swift and Factory.swift are the only source files).
• ✅ Built for mocking in UnitTests, UITests and SwiftUI previews.
• ✅ Unit Tested.
• ✅ Cool logo.

Usage

Injector uses the concept of a syringe:

extension Syringe {

}

Filled with medicine:

extension Syringe {
  // Same mock for all environments
  static let person = Medicine<PersonType>(Person(), mock: Person_Mock())
  // Unique mock for all environments
  static let cat = Medicine<CatType>(
      Cat(), 
      unitTests: Cat_Mock("Mary"), 
      uiTests: Cat_Mock("Sam"), 
      swiftUIPreview: Cat_Mock("Kerry")
  )
  // See Medicine initializer for all combinations
}

And at runtime injected:

let person = Syringe.person.inject()
// or
let person = Syringe.person()
// or
@Inject(Syringe.person) var person

Performing a clean will reset the instances:

Syringe.clean()

Installation

SPM

https://github.com/ptrkstr/injector