TestCase.m

@interface ViewControllerTests : XCTestCase

@property (nonatomic) CustomViewController *viewController;
@property (nonatomic) BOOL beenDealloc;
@property (nonatomic) id<AspectToken> aspectToken;

@end

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

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