目的のcでコアデータを使用したユニットテスト

Question

私のcoredataメソッドはこちらです。これをチェックするユニットテストケースを書く方法。

方法は

- (NSArray *)fetchUserWithUsername:(NSString *)username { 
if (username != nil) { 
    NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; 

    NSEntityDescription *userEntity = [NSEntityDescription entityForName:@“EntityName” inManagedObjectContext:[self sharedContext]]; 
    [fetchRequest setEntity:userEntity]; 
    fetchRequest.predicate = [NSPredicate predicateWithFormat:@"username = %@", username]; 

    NSError *error; 
    NSArray *fetchedObjects = [[self sharedContext] executeFetchRequest:fetchRequest error:&error]; 

    return fetchedObjects; 
} 

return nil; 
} 

Answer 1

は、メモリ内ストアを作成し、オブジェクトにこれを注入coredataからフェッチするcoredataに

- (void)saveUserDetails:(Model *)userDetail { 
if(userDetail != nil) { 
    UserEntity *user = [NSEntityDescription insertNewObjectForEntityForName:@“EntityName” inManagedObjectContext:[self sharedContext]]; 

    NSArray *fetchArray = [self fetchUserWithUsername:userDetail.username]; 

    if ([fetchArray count] == 0) { 
     user.username = userDetail.username; 
     [self saveContext]; 
    } 
} 
} 

メソッドを保存します。

NSURL *modelURL = [[NSBundle mainBundle] URLForResource:@"MyResource" withExtension:@"momd"]; 
NSManagedObjectModel *mom = [[NSManagedObjectModel alloc] initWithContentsOfURL:modelURL]; 
NSPersistentStoreCoordinator *psc = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:mom]; 
XCTAssertTrue([psc addPersistentStoreWithType:NSInMemoryStoreType configuration:nil URL:nil options:nil error:NULL] ? YES : NO, @"Should be able to add in-memory store"); 

NSManagedObjectContext *context = [[NSManagedObjectContext alloc] initWithConcurrencyType:NSMainQueueConcurrencyType]; 
context.persistentStoreCoordinator = psc;