Inherit TestCase classes from this to setup and tearDown a SQLite-backedMagicalRecord core data stack on each test.The SQLite file itself will be deleted between runs.Test cases should use the context provided on self.context. Note that this has taken many tries to get right! Just deleting the files sometimes resulted in the data being retained …

MagicalRecordTestCase.h

#import <XCTest/XCTest.h>
#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>

/**

Inherit XCTest TestCase classes from this to setup and tearDown a SQLite-backed
MagicalRecord core data stack on each test.

The SQLite file itself will be deleted between runs.

Test cases should use the context provided here
*/
@interface MagicalRecordTestCase : XCTestCase
@property(nonatomic, strong) NSManagedObjectContext *context;
@end

MagicalRecordTestCase.m

#import <CoreData/CoreData.h>
#import "MagicalRecordTestCase.h"
#import "MagicalRecord.h"

@implementation MagicalRecordTestCase
- (void)setUp {
    [super setUp];

    [MagicalRecord setupCoreDataStack];
    self.context = [NSManagedObjectContext MR_defaultContext];
}

- (void)tearDown {
    [super tearDown];
    
    // Save changes - so they don't get re-saved later
    [self.context MR_saveToPersistentStoreAndWait];

    // http://stackoverflow.com/questions/14069563/clean-remove-a-database-in-magicalrecord
    NSString *dbStore = [MagicalRecord defaultStoreName];

    NSURL *storeURL = [NSPersistentStore MR_urlForStoreName:dbStore];
    NSURL *walURL = [[storeURL URLByDeletingPathExtension] URLByAppendingPathExtension:@"sqlite-wal"];
    NSURL *shmURL = [[storeURL URLByDeletingPathExtension] URLByAppendingPathExtension:@"sqlite-shm"];

    NSError *error;
    for (NSURL *url in @[storeURL, walURL, shmURL]) {
        if ([[NSFileManager defaultManager] fileExistsAtPath:url.path]) {
            if (![[NSFileManager defaultManager] removeItemAtURL:url error:&error]) {
                NSLog(@"An error has occurred while deleting %@ at %@ error %@", dbStore, url, error);
                break;
            }
        }
    }
    
    [MagicalRecord cleanUp];
}

@end