Inherit from this to automatically create and delete [RLMRealm defaultRealm] files between tests

RealmTestCase.h

#import <XCTest/XCTest.h>

// Inherit from this to automatically create and delete [RLMRealm defaultRealm] files between tests
@interface RealmTestCase : XCTestCase
@end

RealmTestCase.m

#import "RealmTestCase.h"
#import "RLMRealm.h"

@interface RealmTestCase ()
@property(nonatomic, copy) NSString *testRealmPath;
@end

@implementation RealmTestCase

- (void)RLMDeleteRealmFilesAtPath:(NSString *)path {
    NSFileManager *fileManager = [NSFileManager defaultManager];
    [fileManager removeItemAtPath:path error:nil];
    NSString *lockPath = [path stringByAppendingString:@".lock"];
    [fileManager removeItemAtPath:lockPath error:nil];
}

- (void)setUp {
    [super setUp];

    self.testRealmPath = [NSString stringWithFormat:@"%@/Library/Caches/test.realm", NSHomeDirectory()];

    [self RLMDeleteRealmFilesAtPath:self.testRealmPath];
    // Optionally override the default realm path.
    [RLMRealm setDefaultRealmPath:self.testRealmPath];
}

- (void)tearDown {
    [super tearDown];

    [self RLMDeleteRealmFilesAtPath:self.testRealmPath];
}

@end