Dating is mostly about ensuring there is a great deal of agreement: about values, life goals, mutual interest, and so on. But there does not need to be universal agreement. It is perfectly okay, and more than likely, for a dating couple to discover that they have differences of opinion on various issues.
It is not the end of the world if they have to argue it out. Marriage is rarely without disagreement, and the key is how to resolve differences of opinion. Dating is the arena for testing out your ability to discuss divergences and assess whether the two of you are equipped to handle those differences in an amicable manner.