RxTest: Undefined symbols for architecture x86_64 and arm64
问题 I am trying to run the following test from Chapter 16: Testing with RxTest of Raywenderlich RxSwift book: import XCTest import RxSwift import RxTest @testable import Testing class TestingViewModel : XCTestCase { var viewModel: ViewModel! var scheduler: ConcurrentDispatchQueueScheduler! override func setUp() { super.setUp() viewModel = ViewModel() scheduler = ConcurrentDispatchQueueScheduler(qos: .default) } func testColorNameIsRayWenderlichGreenWhenHexStringIs006636() { // 1 let