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Infestation is one of the new cantrips from Unearthed Arcana: Starter Spells. Here is the relevant text
The target must succeed on a Constitution saving throw or take 1d6 piercing damage. If the target takes any of that damage, the target moves 5 feet in a random direction. Roll a d8 for the direction...
Does the target's movement here provoke opportunity attacks from any of my adjacent allies?
This spell ended up printed in Xanathar's Guide to Everything, with clarifying language.
This movement doesn’t provoke opportunity attacks, and if the direction rolled is blocked, the target doesn’t move.
I don't believe it was ever intended to provoke AoO.
As written, this doesn't trigger opportunity attacks.
You also don’t provoke an opportunity attack when you teleport or when someone or something moves you without using your movement, action, or reaction.
Since the spell doesn't use the target's movement, action or reaction, it won't provoke opportunity attacks.
That said, this is a very odd spell. With Unearthed Arcana, you have to remember the disclaimer:
These game mechanics are in draft form, usable in your campaign but not refined by design iterations or full game development and editing.
Why do I think it's odd? Well, lots of spells move a target around without using their movement, action, or reaction. But this spell says that "the target moves", not that they are moved. This suggests that it might be intended to use their movement, or possibly a reaction, similar to spells like Dissonant Whispers or Confusion.
So while, in its current form, the spell doesn't provoke opportunity attacks, between its current form and its published form (if it ever gets published), it may well be changed slightly so that it does.
