Kiwi message expectation

I want to test is method called with specific parameters. But it's always fail, even if I see in the debugger, that method is called.

SPEC_BEGIN(ShareWithFriendsViewControllerSpec)

describe(@"ShareWithFriendsViewController", ^{

    context(@"Test Analytics Share with friends", ^{

        id googleMetricsMock = [GoogleMetrics nullMock];

        beforeAll(^{

            [GoogleMetrics stub:@selector(sharedInstance)
                      andReturn:googleMetricsMock];

        });

        it(@"Should report pressing share button", ^{
            ShareWithFriendsViewController *vc = [ShareWithFriendsViewController new];

            [vc handleButtonCellButtonPressedNotification:nil];

            [[googleMetricsMock should] receive:@selector(pushEventMetrics:)];

            [[googleMetricsMock should] receive:@selector(pushEventMetrics:)
                                  withArguments:[@{ kMetricsEventCategoryKey : kMetricsEventCategorySocialInteractions,
                                          kMetricsEventActionKey : kMetricsEventActionClick,
                                          kMetricsEventLabelKey : kMetricsEventRecommendLabel } mutableCopy]];

        });

    });

});

SPEC_END

My implementation of handleButtonCellButtonPressedNotification:

- (void)handleButtonCellButtonPressedNotification:(NSNotification *)aNotification
{
    [self reportGoogleAnalyticsLabel:kMetricsEventRecommendLabel
                              action:kMetricsEventActionClick
                             context:nil];
}

- (void)reportGoogleAnalyticsLabel:(NSString *)label
                        action:(NSString *)action
                       context:(NSString *)context
{
    NSMutableDictionary *dataDictionary = [@{ kMetricsEventCategoryKey : kMetricsEventCategorySocialInteractions,
        kMetricsEventActionKey : action,
        kMetricsEventLabelKey : label
    } mutableCopy];

    if (context) {
        dataDictionary[kMetricsEventContextKey] = context;
    }

    [[GoogleMetrics sharedInstance] pushEventMetrics:dataDictionary];
}