How are egg moves discovered?

Question

So the new starters have been revealed. Soon we will have moves and info on it in the DB. But how do you guys figure out the egg moves. Level up and TM moves are easy to find, but the egg moves?

Comments

My assumption would be that most of the info is obtained by people using hacking methods to simply look at the raw data.  These things are coded directly into the game, so if you know where to look you should be able to find it.

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That or you make a lot of babies. ;D

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Scientist: Okay Ditto, it's that time again, new Pokémon revealed and we need to know their egg moves.

Ditto: Heck naw.

Scientist: You know the drill, we run through all breedable Pokémon one at a time until we've found  all of the egg moves.

Ditto: FML

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So.......  just another day at the daycare?

Answer 1

I believe egg moves are learned from continuous breeding and from the parents learning moves from move tutors. I think its like if the dad has a move from a move tutor that the female line can learn, the Pokemon that hatched from the egg will have that move. People probably discover them by always breeding with Pokemon that have been taught egg moves. Sometimes they are official leaks of egg moves also.

Source:http://bulbapedia.bulbagarden.net/wiki/Egg_Move and https://www.youtube.com/watch?v=1cT410kgzXk

Answer 2

Pikachu With Wings' answer is correct for X&Y - all the egg moves were discovered by extensive testing. This was only because the 3DS had not been hacked yet.

However for other games, the moves are found in the games' code by hacking. The same should happen with Sun/Moon too, we'll get a complete list fairly soon after release.