Swift 单元测试时托管对象上下文nil restkit
我正在使用与cocoapods集成的restkit(0.24.1)为我的应用程序开发单元测试:Swift 单元测试时托管对象上下文nil restkit,swift,unit-testing,restkit,cocoapods,nsmanagedobjectcontext,Swift,Unit Testing,Restkit,Cocoapods,Nsmanagedobjectcontext,我正在使用与cocoapods集成的restkit(0.24.1)为我的应用程序开发单元测试: pod "RestKit/Testing", "~> 0.24.1" pod "RestKit", "~> 0.24.1" 我收到一条错误消息,指出managedObjectContext为零。我不同意,因为我已经有很多使用相同对象上下文的单元测试,它们似乎都能工作…:/ Restkit设置: lazy var persistentStoreCoordinator: RKManagedO
pod "RestKit/Testing", "~> 0.24.1"
pod "RestKit", "~> 0.24.1"
我收到一条错误消息,指出managedObjectContext为零。我不同意,因为我已经有很多使用相同对象上下文的单元测试,它们似乎都能工作…:/
Restkit设置:
lazy var persistentStoreCoordinator: RKManagedObjectStore? = {
var coordinator = RKManagedObjectStore(managedObjectModel: self.managedObjectModel)
self.objectManager!.managedObjectStore = coordinator
coordinator.createPersistentStoreCoordinator()
var storePath: NSString = RKApplicationDataDirectory().stringByAppendingPathComponent(self.storeFilename)
var e: NSError?
coordinator.addSQLitePersistentStoreAtPath(storePath as String, fromSeedDatabaseAtPath: nil, withConfiguration: nil,
options: [
NSInferMappingModelAutomaticallyOption: true,
NSMigratePersistentStoresAutomaticallyOption: true
], error: &e)
if(e != nil){
var error: NSError? = nil
coordinator = nil
// Report any error we got.
let dict = NSMutableDictionary()
dict[NSLocalizedDescriptionKey] = "Failed to initialize the application's saved data"
dict[NSLocalizedFailureReasonErrorKey] = "There was an error creating or loading the application's saved data."
dict[NSUnderlyingErrorKey] = error
error = NSError(domain: "YOUR_ERROR_DOMAIN", code: 9999, userInfo: dict as [NSObject : AnyObject])
Logger.Error("Serious error \(error), \(error!.userInfo)")
abort()
}
coordinator.createManagedObjectContexts()
coordinator.managedObjectCache = RKInMemoryManagedObjectCache(managedObjectContext: coordinator.persistentStoreManagedObjectContext)
return coordinator
}()
单元测试:
class TestRestMappers: XCTestCase {
let rootEndpoint = RootEndpoint()
override func setUp() {
super.setUp()
let testTargetBundle = NSBundle(identifier: "anita-borg.malaria-iosTests")
RKTestFixture.setFixtureBundle(testTargetBundle)
}
func testRootEndpointMapper() {
let parsedJson: AnyObject? = RKTestFixture.parsedObjectWithContentsOfFixture("api.json")
let mapping = rootEndpoint.mapping
let test = RKMappingTest(forMapping: mapping, sourceObject: parsedJson, destinationObject: nil)
test.addExpectation(RKPropertyMappingTestExpectation(sourceKeyPath: "users", destinationKeyPath: "users"))
XCTAssertTrue(test.evaluate)
}
}
我从控制台收到的错误消息是:
*** Assertion failure in -[RKMappingTest dataSourceForMappingOperation:], (...): error:
-[malaria_iosTests.TestRestMappers testRootEndpointMapper] : XCTAssertTrue failed: throwing "Cannot test an `RKEntityMapping` with a nil managed object context." -
Test Case '-[malaria_iosTests.TestRestMappers testRootEndpointMapper]' failed (0.010 seconds).
连接存储的映射片段:
let managedObjectStore: RKManagedObjectStore = CoreDataStore.sharedInstance.persistentStoreCoordinator!
let rootMap = RKEntityMapping(forEntityForName: name, inManagedObjectStore: managedObjectStore)
我已经在很多地方找到了问题的根源,但似乎找不到解决办法
先谢谢你
编辑:
NSManagedObjectContext:
lazy var backgroundContext: NSManagedObjectContext? = {
let coordinator = self.store.persistentStoreCoordinator?.persistentStoreCoordinator
if coordinator == nil {
return nil
}
var backgroundContext = NSManagedObjectContext(concurrencyType: NSManagedObjectContextConcurrencyType.PrivateQueueConcurrencyType)
backgroundContext.persistentStoreCoordinator = coordinator
return backgroundContext
}()
测试需要配置。通常,您应该假设,如果您没有显式地为测试提供一些信息,那么它就没有任何信息。因此,您需要为测试提供一个可使用的上下文(在您的特定情况下可能是一个数据源)
您没有设置
test的managedObjectContext
,虽然我不明白,但我认为它是生产测试和单元测试的核心数据/restkit堆栈的横向。那么我怎样才能为测试提供一个呢?您有一个显式映射测试,映射没有显式地使用/保留用于创建它的实体的MOC,因此您需要使用上下文来配置测试,以便我理解。但是当我调用coordinator.createManagedObjectContexts()时,这不就包括在内了吗?。通过创建上下文的文档:“为接收方创建持久存储和主队列管理对象上下文”,当然。你的意思是说你期待着测试出来寻找一个MOC来使用吗?我理解!成功了!感谢您的快速回答和反馈!我是新来的,我怎么能投票给你?(并将此标记为正确答案)编辑:标记为已解决:)
test.managedObjectContext = ...