DepedencyContainer_UnitTest.swift

    override func setUp() {
        super.setUp()
        Resolver.reset()
        DepedencyContainer.instance.register(depedency: ProductsRepository.self, implemenation: {
            MockProductsRepository()
        })
    }

    func testGivenAProductTheProductsPriceWillBeFiveHundred() {
        let expectedPrice = 100.0
        let viewModel = ProductViewModel()
        XCTAssertTrue(viewModel.products.fetchProducts().first?.price == expectedPrice)
        
    }

struct MockProductsRepository : ProductsRepository {
    func fetchProducts() -> [Product] {
        return [Product(name: "Adidas Sneakers", price: 100.0)]
    }
}