Weird news: How many times can you fail a citizenship test ?

If you want to take citizenship of a country, a lot of countries insist on a test where you can show that you have the learnt the culture and the ethos of the country, know its history to some degree, and so on. This is because this would show that you are willing to assimilate in the culture of the country. One would expect that you would pass this test mostly the first time, since you would have done some preparation for this, but even if you were to fail it once, you would understand that there is a lot more needed to be done, and you would be allowed to give the test again, so that you could prepare more and be ready the next time.
The idea being, that if you fail this test multiple times, it shows that either you don't know enough about the country, or you could not be bothered with trying to learn more about the country. But no limits for how many times you can give this test ? That seems a bit strange. 60+ times, something is weird. And for 50 pounds per test, it is not such a small amount. (link to article):

Woman has spent more than £3,000 repeatedly sitting the £50-a-time exam Citizenship test asks 24 questions about British traditions and customs Individual case reveals that questionnaire can be completed infinite times Tory MP blasted situation, insisting that it just cannot be justified