ProfileViewModelTests.swift

class ProfileViewModelTests: XCTestCase {
    func testDelegateNotifiedWhenProfileDeleted_Refactored() {
        // given
        let (viewModel, _, delegate) = initializedViewModel()

        // when
        viewModel.deleteProfile()

        // then
        XCTAssert(delegate.didDeleteUser)
    }

    // MARK: - Helpers
    private func initializedViewModel() -> (ProfileViewModel, FakeAPIClient, FakeDelegate) {
        let fakeClient = FakeAPIClient()
        let delegate = FakeDelegate()
        let viewModel = ProfileViewModel(apiClient: fakeClient, delegate: delegate)
        return (viewModel, fakeClient, delegate)
    }
}