Question

我正在为我的核心数据应用设置单元测试。我在一个非常简单的测试中遇到了一个奇怪的问题。我得到的错误是：

/Developer/Tools/RunPlatformUnitTests.include:451:0 Test rig '/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.0.sdk/Developer/usr/bin/otest' exited abnormally with code 134 (it may have crashed).

我的单元测试的标题是：

#import <SenTestingKit/SenTestingKit.h>
#import <UIKit/UIKit.h>
#import <CoreData/CoreData.h>
#import "Unit.h"

@interface UnitLogicTests : SenTestCase {
    NSManagedObjectContext *managedObjectContext;
    NSPersistentStoreCoordinator *persistentStoreCoordinator;
    NSManagedObjectModel *managedObjectModel;
    NSPersistentStore *persistentStore;
}
@end

实施是：

#import "UnitLogicTests.h"

@implementation UnitLogicTests

#pragma mark Setup and Teardown
- (void)setUp {
    managedObjectModel = [[NSManagedObjectModel mergedModelFromBundles: nil] retain];
    NSLog(@"model: %@", managedObjectModel);
    persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:managedObjectModel];
    persistentStore = [persistentStoreCoordinator addPersistentStoreWithType:NSInMemoryStoreType
                                                               configuration:nil
                                                                         URL:nil
                                                                     options:nil 
                                                                       error:NULL];
    managedObjectContext = [[NSManagedObjectContext alloc] init];
    [managedObjectContext setPersistentStoreCoordinator:persistentStoreCoordinator];
}

- (void)tearDown
{
    [managedObjectContext release];
    managedObjectContext = nil;
    NSError *error = nil;
    STAssertTrue([persistentStoreCoordinator removePersistentStore:persistentStore error:&error], 
                 @"couldn't remove persistent store: %@", error);
    persistentStore = nil;
    [persistentStoreCoordinator release];
    persistentStoreCoordinator = nil;
    [managedObjectModel release];
    managedObjectModel = nil;
}

#pragma mark -
#pragma mark Test Cases
- (void)testThatEnvironmentWorks
{
    STAssertNotNil(persistentStore, @"no persistent store");
}


- (void)testNewUnitDefaults {
    Unit *newUnit = [NSEntityDescription insertNewObjectForEntityForName:@"Unit" 
                                                  inManagedObjectContext:managedObjectContext];
    STAssertEquals(newUnit.floorNumber, 1, @"Default value for new Unit's floor number should be 1");

}

@end

如果我省略- (void)testNewUnitDefaults测试，那么构建完成没有错误，因此最后一次测试中的某些内容将其抛出一个循环。我是新手，所以非常感谢任何帮助！

感谢。

Answer 1

我今天遇到了同样的问题，我认为Martin Brugger是对的，但如果你无法获得资源，还有一种替代方法可以获得bundle resrouce。

您可以尝试通过

获取捆绑包

[NSBundle bundleForClass:[self class]]

这是我的核心数据单元测试工作的代码

NSBundle * bundle = [NSBundle bundleForClass:[self class]];
managedObjectModel_ = [NSManagedObjectModel mergedModelFromBundles:[NSArray arrayWithObject:bundle]];

注意：请确保.xcdatamodel包含在您的单元测试目标中

Answer 2

在你的测试用例周围添加@try .... catch块。

我认为用

加载模型

[NSManagedObjectModel mergedModelFromBundles: nil]

没有按预期工作

使用您的代码初始化核心数据堆栈我得到了一个异常

+entityForName: could not locate an entity named 'Unit' in this model.

将模型初始化更改为以下代码可以正常工作：

    // set according to the identifier in your modeltest Info.plist

    NSString* path = [[NSBundle bundleWithIdentifier:@"com.yourcompany.ModelTest"] 
                                     pathForResource:@"CoreDataUnitTest_DataModel" 
                                              ofType:@"mom"];
    NSURL* modelURL = [NSURL URLWithString:path];
    managedObjectModel = [[NSManagedObjectModel alloc] initWithContentsOfURL:modelURL];

使用OCUnit进行单元测试有时会有点棘手，因为只有很少的错误信息会被曝光。

Answer 3

在2014年7月花了几个小时后，这篇文章是几个部分导致我找到工作解决方案之一。我们设法打破了令人惊讶的脆弱（和神秘）机制，它将源代码所在的bundle链接到运行单元测试的bundle。此外，您可能有一个名不副实的xcdatamodel。请参阅注释以获取解释：

-(NSManagedObjectContext *) getManagedObjectContext
{
   NSManagedObjectContext *moc = [[NSManagedObjectContext alloc] init];
   //Replace MyClass with class that is from your data model
   //really any of your classes should work
   NSBundle * bundle = [NSBundle bundleForClass:[MyClass class]];

   //You can uses this line to figure you what your bundle is actually named
   //In my case the because my PRODUCT_NAME had spaces in it they was replaced with '-' 
   //(dashes) and I couldn't divine it from the info.plist and the Build Settings.
   NSString * ident =[bundle bundleIdentifier];


   //This will show you where your app is actually out building temporary files
   //The exact location appears to change every version or to of Xcode so
   //this is useful for figuring out what your model is named
   NSString * bundlePath =[bundle bundlePath];


   //Here replace Name_of_model_without_the_dot_xcdatamodel with the name of your 
   //xcdatamodel file without an extension
   //Some tutorials will have you use AppName.xcdatamodel others will simply name it
   //DataModel.xcdatamodel.
   //In any event if bothe path and path1 return null then check the 
   //bundlePath by going to Finder and pressing Command-Shift-G and pasting 
   //bundlePath into the pop-up. Look around for a mom or momd file thats the name you want!
   NSString* path = [bundle
              pathForResource:@"Name_of_model_without_the_dot_xcdatamodel"
              ofType:@"momd"];

   //If the above 'path' and 'path1' is not then you want to use this line instead
   NSString* path1 = [bundle
                  pathForResource:@"Name_of_model_without the_dot_xcdatamodel"
                  ofType:@"mom"];

   //the above path lines are simply so you can trace if you have a mom or a momd file
   //replace here appropriately 
   NSURL *modelURL = [bundle URLForResource:@"Name_of_model_without the_dot_xcdatamodel" 
       withExtension:@"momd"];

   //the rest is boiler plate:
   NSManagedObjectModel *mom = [[NSManagedObjectModel alloc] initWithContentsOfURL:modelURL];

   NSPersistentStoreCoordinator *psc =
      [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:mom];

   [psc addPersistentStoreWithType:NSInMemoryStoreType 
      configuration:nil URL:nil options:nil error:nil];

   [moc setPersistentStoreCoordinator:psc];
   return moc;
}

以下是您可以使用上述内容的方法：

-(void)testMyStuff
{

   NSManagedObjectContext* context=[self getManagedObjectContext];
   MyClass *myobj=[NSEntityDescription insertNewObjectForEntityForName:@"MyClass"   
   inManagedObjectContext:context];
}

最后请注意，您可能还需要在构建阶段的“编译源”下添加源文件和xcmodel。不幸的是，这几乎与每个版本的Xcode都有所不同。对于Xcode 5：

enter image description here

单元测试核心数据 - 使用代码134异常退出

3 个答案: