Jodie Sweetin Finalizes Divorce

Jodie Sweetin and her ex-husband could be facing drug tests with very little warning ... and it's all part of their child custody agreement.

The "Full House" child star finalized her divorce from Morty Coyle Wednesday, and according to the docs -- obtained by TMZ -- they'll have share custody of their 6-year-old daughter ... with a twist.

Jodie and Morty can order one another to submit to a hair follicle drug test, with 12 hours notice, if they suspect the other drove their kid while under the influence.

As for finances ... Jodie will fork over $10k to Morty, on top of the community property thing -- they're splitting all income made during the marriage, which includes her "Full House" and "Fuller House" dough.

According to the docs, Jodie says she's currently making $4,000 a month. Syndication residuals do start shrinking after a while.