单元测试核心数据-异常退出,代码134

试一试。。。。抓住你的测试用例周围的块。

我想在模型上加载

[NSManagedObjectModel mergedModelFromBundles: nil]

没有按预期工作

+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的单元测试有时有点棘手,因为只暴露了很少的错误信息。

你可以试着把包裹拿过来

[NSBundle bundleForClass:[self class]]

这是我的代码,使核心数据单元测试工作

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

注:请同时确保.xcdatamodel包含在您的单元测试目标中

-(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;
}

以下是如何使用上述上下文:

-(void)testMyStuff
{

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

最后一点,您可能还需要在构建阶段的“编译源代码”下添加源文件和xcmodel。不幸的是,几乎每个版本的Xcode都会改变这种情况。对于Xcode 5: