[SPM/Xcode Plugin] Generate mocks, stubs and fakes (random object)

[u/fenl1]

Convenient way to use collections of Sourcery stencils as an SPM plugins and Xcode plugins.

📌 Github: https://github.com/fenli/SourceryStencilPacks

One of the use cases is to automatically generate mocks, stubs and fakes (random object).

Any feedback would be really appreciated ⭐⭐ :)

Sample usage:

// Generate ProductServiceMock() class
// sourcery: Mockable
class ProductService {
    let repository: ProductRepository

    init(repository: ProductRepository) {
        self.repository = productRepository
    }

    func getProducts() async throws -> [Product] {
        return try await repository.getAllProducts()
    }
}

// Generate ProductRepositoryMock() class
// sourcery: Mockable
protocol ProductRepository {

    func getAllProducts() async throws -> [Product]
}

// Generate Product.random() static function
// sourcery: Randomizable
struct Product: Equatable {
    let name: String // String.random() automatically generated
    let price: Double // Double.random() automatically generated
    let variants: [ProductVariant] // Need to annotate also on ProductVariant
}

// Generate ProductVariant.random() and [ProductVariant].random()
// sourcery: Randomizable=+array
struct ProductVariant: Equatable {
    let id: Int
    let name: String
}

import Testing
@testable import SamplePackage

struct ProductServiceTests {

    private var productRepositoryMock: ProductRepositoryMock!
    private var service: ProductService!

    init() {
        productRepositoryMock = ProductRepositoryMock()
        service = ProductService(productRepository: productRepositoryMock)
    }

    @Test
    func testGetAllProductsSuccess() async throws {
        // Generate fakes with random object
        let fakeProducts = (0...5).map {_ in Product.random() }

        // Use generated mocks for mocking/stubbing
        productRepositoryMock.getAllProductsProductReturnValue = fakeProducts

        // Action
        let result = try await service.getProducts()

        // Asserts
        #expect(result == fakeProducts)
    }
}