For AP-EAMCET, there are 2 official mock tests available.

-> AP EAMCET 2018: Official Mock Test

-> AP EAMCET 2018: Second Official Mock Test

For TS-EAMCET, there's a mock test as well as a practice test is being conducted on April 19 and April 20.

-> TS EAMCET 2018: Official Mock Test

-> TS EAMCET 2018: Practice Test

Hi You can attempt mock test for AP EAMCET if you go to their official website (http://sche.ap.gov.in/eamcet/Eamcet/EAMCET_HomePage.aspx). i that page you can find the link for mock test and select the stream you want.

Good Luck.