Test Block

Not to be confused with Test Instance Block.

This feature is exclusive to Java Edition.

Test Block

Test Block fail.png: Infobox image for Minecraftblock Test Block

Test Block accept.png: Infobox image for Minecraftblock Test Block

Rarity tier	Epic
Renewable	No
Stackable	Yes (64)
Tool	None
Blast resistance	3,600,000
Hardness	-1
Luminous	No
Transparent	No
Flammable	No
Catches fire from lava	No

{
    "title": "Test Block",
    "rows": [
        {
            "field": "Epic",
            "label": "(link to Rarity article, displayed as Rarity tier)"
        },
        {
            "field": "No",
            "label": "(link to Renewable resource article, displayed as Renewable)"
        },
        {
            "field": "Yes (64)",
            "label": "Stackable"
        },
        {
            "field": "None",
            "label": "Tool"
        },
        {
            "field": "3,600,000",
            "label": "(link to Explosion#Blast resistance article, displayed as Blast resistance)"
        },
        {
            "field": "-1",
            "label": "(link to Breaking#Blocks by hardness article, displayed as Hardness)"
        },
        {
            "field": "No",
            "label": "(link to Light article, displayed as Luminous)"
        },
        {
            "field": "No",
            "label": "(link to Opacity article, displayed as Transparent)"
        },
        {
            "field": "No",
            "label": "(link to Flammable article, displayed as Flammable)"
        },
        {
            "field": "No",
            "label": "Catches fire<br>from (link to lava article, displayed as lava)"
        }
    ],
    "invimages": [
        "[&dTest Block]Test Block start",
        "[&dTest Block]Test Block log",
        "[&dTest Block]Test Block fail",
        "[&dTest Block]Test Block accept"
    ],
    "images": [
        "Test Block start.png",
        "Test Block log.png",
        "Test Block fail.png",
        "Test Block accept.png"
    ]
}

A test block is a technical block that is used for game tests.

Obtaining

Test blocks are available in the Creative inventory, under the Operator Utilities tab, and using the /setblock, /fill, or /give commands. When placed, test blocks are unbreakable in Survival and have the same blast resistance as bedrock.

Usage

Cannot be placed in Survival. When placed, use the test block to open its GUI. The GUI opens only if the player is in Creative mode, and has permission level 2 or higher.

Start

Emits a constant redstone signal, similarly to a block of redstone, when the test starts. This block is required to be part of the structure of a block-based test.

Log

Logs a message to the server log every time it receives a redstone signal. The message is set in the block's GUI. This has a speech bubble texture.

Fail

Causes a test to fail when it receives a redstone signal. This has a frowning face texture.

Accept

Causes a test to pass when it receives a redstone signal. This block is required to be part of the structure of a block-based test. This has a smiling face texture.

Data values

ID

Java Edition:

Name	Identifier	Form	Translation key
Test Block	`test_block`	Block & Item	`block.minecraft.test_block`

Block states

Name	Default value	Allowed values	Description
mode	`start`	`start` `log` `fail` `accept`	The state the test block is in.

History

This section is missing information about: Include information on early iteration: https://youtu.be/vXaWOJTCYNg

Please expand the section to include this information. Further details may exist on the talk page.

Java Edition
1.21.5	25w03a	Added test blocks.
	25w04a	The name of block state has been changed from `test_block_mode` to `mode`.
	25w10a	The textures of test blocks have been changed.

Issues

Issues relating to "Test Block" are maintained on the bug tracker. Issues should be reported and viewed there.

Navigation

Blocks

Structural
Wood/Hypha	Logs Stripped Wood Stripped Stems Stripped Hyphae Stripped Block of Bamboo Stripped Bamboo Mosaic Planks
Stone-based	Stone Cobblestone Mossy Smooth Stone Stone Bricks Chiseled Cracked Mossy Granite Polished Diorite Polished Andesite Polished Deepslate Chiseled Cobbled Polished Deepslate Bricks Cracked Deepslate Tiles Cracked Tuff Chiseled Polished Tuff Bricks Chiseled
Overworld	Bricks Packed Mud Mud Bricks Block of Resin Resin Bricks Chiseled Sandstone Chiseled Cut Smooth Red Sandstone Chiseled Cut Smooth Prismarine Bricks Dark
The Nether	Netherrack Nether Bricks Chiseled Cracked Red Blackstone Polished Blackstone Chiseled Polished Blackstone Bricks Cracked Basalt Polished Smooth
The End	End Stone Bricks Purpur Block Pillar
Ore/Mineral	Block of Quartz Bricks Chiseled Pillar Smooth Block of Copper Chiseled Cut Grate Block of Iron Block of Gold Raw Block of Amethyst Block of Coal Block of Diamond Block of Emerald Block of Lapis Lazuli Block of Netherite Block of Redstone

Ornamental
Decorative	Crying Obsidian Gilded Blackstone Honeycomb Block Reinforced Deepslate
Partial Blocks	Bars Iron Copper Chains Iron Copper Dirt Path Fences Wooden Nether Brick Slabs Cut Copper Wooden Stairs Cut Copper Wooden Walls
Dyeable/Dyed	Wool Carpets Terracotta Stained Glazed Concrete Powder Glass Pane Tinted Stained Glass Pane
Lighting	Candle Dyed End Rod Froglight Glowstone Jack o'Lantern Lantern Copper Soul Sea Lantern Torch Copper Soul
BE & edu only	Colored Torches Elements Hardened Glass Pane Hardened Stained Glass Pane

Natural
Sediment/Soil	Clay Dirt Coarse Grass Block Mycelium Podzol Rooted Gravel Mud Nylium Crimson Warped Sand Red Soul Sand Soil
Misc. rock	Bedrock Magma Block Obsidian Calcite Pointed Dripstone Block
Ore/Mineral	Amethyst Bud Cluster Budding Amethyst Ancient Debris Coal Ore Deepslate Copper Ore Deepslate Raw Block Diamond Ore Deepslate Emerald Ore Deepslate Gold Ore Deepslate Nether Iron Ore Deepslate Raw Block Lapis Lazuli Ore Deepslate Nether Quartz Ore Redstone Ore Deepslate
Plant	Azalea Flowering Bamboo Shoot Beetroots Big Dripleaf Small Bush Cactus Carrots Cave Vines Chorus Plant Flower Cocoa Creaking Heart Dead Bush Fern Large Firefly Bush Hanging Roots Leaf Litter Leaves Lily Pad Mangrove Propagule Mangrove Roots Muddy Melon Stem Moss Block Carpet Pale Hanging Moss Pale Moss Block Carpet Potatoes Pumpkin Carved Stem Resin Clump Saplings Seagrass Tall Short Dry Grass Tall Short Grass Tall Sugar Cane Sweet Berry Bush Vines Wheat Crops Hay Bale
Flower	Allium Azure Bluet Blue Orchid Cactus Flower Cornflower Dandelion Golden^{[upcoming First Drop 2026]} Eyeblossom Closed Open Lilac Lily of the Valley Oxeye Daisy Peony Pink Petals Pitcher Plant Crop Poppy Rose Bush Spore Blossom Sunflower Torchflower Crop Tulips Wildflowers Wither Rose
Fungus & Related	Nether Fungi Crimson Warped Glow Lichen Mushrooms Brown Red Blocks Stem Nether Sprouts Nether Wart Wart Block Nether Warped Crimson Roots Warped Roots Shroomlight Twisting Vines Weeping Vines
Fauna & algae	Coral Dead Coral Blocks Dead Coral Fans Dead Dried Ghast Kelp Dried Block Sea Pickle
Fauna/Related	Bee Nest Bone Block Cobweb Dragon Egg Frogspawn Infested Blocks Sniffer Egg Turtle Egg
Sculk	Sculk Sculk Catalyst Sculk Sensor Calibrated Sculk Shrieker Sculk Vein
Fluid & Related	Lava Water Bubble Column Ice Blue Packed Snow Powder Block
Non-physical	Air Cave‌^{[JE only]} Void‌^{[JE only]} Invisible Bedrock‌^{[BE & edu only]} Fire Soul

Utility
Interactable	Anvil Chipped Damaged Barrel Beacon Brewing Stand Cartography Table Chest Ender Copper Crafting Table Enchanting Table Furnace Blast Smoker Grindstone Lectern Loom Shulker Box Dyed Sign Hanging Smithing Table Stonecutter
Utilizable	Banners Ominous Beehive Beds Bell Bookshelf Cake with Candle Campfire Soul Cauldron Chiseled Bookshelf Composter Conduit Copper Golem Statue Decorated Pot End Gateway End Portal End Portal Frame Farmland Fletching Table Flower Pot Frosted Ice Heads Skeleton Wither Skeleton Zombie Creeper Piglin Dragon Heavy Core Jukebox Ladder Lodestone Monster Spawner Nether Portal Respawn Anchor Scaffolding Shelf Sponge Wet Suspicious Gravel Suspicious Sand TNT Trial Spawner Ominous Vault Ominous
Redstone/ Mechanical	Buttons Wooden Stone Polished Blackstone Copper Bulb Crafter Daylight Detector Dispenser Dropper Doors Copper Iron Wooden Honey Block Hopper Lever Lightning Rod Note Block Observer Piston Sticky Pressure Plates Wooden Stone Polished Blackstone Heavy Weighted Light Weighted Rail Activator Detector Powered Redstone Lamp Redstone Wire Comparator Repeater Torch Slime Block Target Trapped Chest Trapdoors Copper Iron Wooden Fence Gates Tripwire Hook Tripwire
BE & edu only	Allow Border Chalkboards Compound Creator Deny Element Constructor Heat Block Item Frame Glow Lab Table Material Reducer Underwater TNT Underwater Torch

Creative or commands only
All editions	Barrier Command Block Chain Repeating Jigsaw Block Light Petrified Oak Slab Player Head Structure Block Void
Java Edition only	Test Block Test Instance Block
China Edition only	mod_ore micro_block

Removed
All editions	Grassless Dirt Seamless Stone Slab
Java Edition only	Cloth Dead Coral Block Gear Lava Spawner Locked chest Rose Potted Shrub Water Spawner
Bedrock Edition only	Blue Rose grass_carried leaves_carried Fern Fern Smooth Stone Bricks Structure Air mysterious_frame_slot
MinecraftEdu only	Big Sign Border block Build allow block Build disallow block Foundation block Home Block Information block Information Sign Number Block Spawn Block Teleport Block
Minecraft 4k only	XOR Block

Unused
Bedrock Edition only	Chalkboard
BE & edu only	Camera Block Chiseled Purpur tile.client_request_placeholder_block.name Deprecated Anvil tile.deprecated_purpur_block_2.name Glowing Obsidian tile.info_update.name tile.info_update2.name Nether Reactor Core tile.reserved6.name Stonecutter (old) Unknown

Joke
April Fools 2013	Block of Coal Etho Slab Tinted Glass Torch (Burnt-out)
April Fools 2016	USB Charger Block
April Fools 2020	An Ant Box of Infinite Books Cursor Funky Portal Leftover Swaggiest stairs ever
April Fools 2022	How did we get here?
April Fools 2023	Cheese Copper Sink Filled Copper Spleaves Golden Chest Other Portal Packed Air Pickaxe Block Place Block
April Fools 2024	Baked Potato Bricks Expired Charred Big Brain Block of Amber Block of Potato Peels Corrupted Floatater Floatato Frying Table Gravtater Pedestal Peelgrass Block Corrupted Poison Farmland Poison Path Poisonous Mashed Potato Poisonous Potato Block Compressed Double Compressed Triple Compressed Quadruple Compressed Poisonous Potato Cutter Poisonous Potato Head Block Poisonous Potato Headpiece Poisonous Potato Ore Deepslate Potato Battery Potato Bud Potato flower Potato Fruit Potato Leaves Potato Pedicule Potato Portal Potato Refinery Potato Sprouts Potato Stem Planks Slab Stairs Door Trapdoor Button Pressure Plate Sign Hanging Sign Fence Fence Gate Potone Copper Ore Diamond Ore Gold Ore Iron Ore Lapis Lazuli Ore Redstone Ore Resin Ore Powerful Potato Strong Roots Taterstone Terre de Pomme Vicious Potato Weak Roots
April Fools 2025	Dimension Control Mine Travelling Block Mine Revisitor Mine Crafter Mob Trophy Shimmering Door Sky Trophy

Extreme metadata variants
All editions	Directionless Hopper Seamless Stone Slab Six-sided Hay Bale Six-sided Piston
Java Edition only	Faceless Furnace Faceless Jack o'Lantern Green Shrub Potted Invisible stairs Misaligned torch Redstone Nether portal post Overripe Melon Stem Attached Overripe Pumpkin Stem Attached Overgrown Cocoa Overeaten Cake Overgrown Wheat Crops Potted non-flower block Snowy Dirt Coarse Strange buttons Others
Bedrock Edition only	Bell Stand Diorite Bell Granite Bell Polished Six-sided Bone Block Six-sided Purpur Pillar Six-sided Quartz Pillar Smokeless Campfire