Lightweight Dependency Injection Using Async Functions

John Sundell:

What if we could actually make our code fully testable in a way that doesn’t require us to introduce any new protocols, mocking types, or complicated abstractions? Let’s explore how we could make use of Swift’s newasync/await capabilities to make that happen.

[…]

One thing that’s very neat about the above pattern is that it still lets us keep using our existingNetworking andProductLoader code just like before — all that we have to do is to call that code within thereloading function/closure that we pass into ourProductViewModel when creating it[…]

Previously:

• Swift 5.5 Released

CraftProgrammingSwift ConcurrencySwift Programming LanguageTesting

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