KVOObjectTests.m

@interface KVOObjectTests : XCTestCase

@property (nonatomic) KVOObject *kVOObject;
@property (nonatomic) BOOL beenDealloc;
@property (nonatomic) id<AspectToken> aspectToken;

@end

- (void)setUp {
    [super setUp];
 
    self.kVOObject = [[KVOObject alloc] init];
    
    @weakify(self);
    self.aspectToken = [KVOObject
    aspect_hookSelector:NSSelectorFromString(@"dealloc")
    withOptions:AspectPositionBefore usingBlock:^(id<AspectInfo> aspectInfo){
        @strongify(self);
        self.beenDealloc = YES;
    } error: nil];
 
}

- (void)tearDown {
    self.kVOObject = nil;
    assertThatBool(self.beenDealloc, isTrue());
    [self.aspectToken remove];
    [super tearDown];
}