Test blocks are a new type of unused operator blocks that were recently added to Minecraft 25w03a snapshot. They will soon be a part of the title with its upcoming drop.

If you are on the latest snapshot, you will also see five new test blocks recently added by Mojang in the Minecraft snapshot 25w03a. These blocks will remain in the operator utilities tab from ...

Minecraft: Java Edition Snapshot 22w45a is now available for players to test, and includes plenty of changes to Vex designs, the Creative Inventory, and more. There are also two new bamboo blocks.