Test Block
Minecraft Wiki article. Categories: Java_Edition, Non-renewable_resources, Stackable_resources, Articles_to_be_expanded, Blocks, Creative_or_commands_only_blocks, Blocks_with_GUI
This article is reproduced from Test Block on the Minecraft Wiki. Mirrored from revision 3643260. It is licensed CC BY-NC-SA 3.0 by the Minecraft Wiki contributors — not under the Codex’s CC BY-SA 4.0, and it may not be used commercially. Edits belong upstream, not here.
{
"title": "Test Block",
"rows": [
{
"field": "<span nowrap;\"><span inline-block; background-color: #f5f; border: 1px solid #888; border-radius: 0.3em; color: transparent; width: 1em; height: 1em; vertical-align: -0.36em; margin-right: -0.1em\"><br></span> </span> 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 Fire#Flammable blocks article, displayed as Flammable)"
},
{
"field": "No",
"label": "Catches fire<br>from (link to lava article, displayed as lava)"
},
{
"field": "<span nowrap;\"><span inline-block; background-color: rgb(135, 107, 98); border: 1px solid #888; border-radius: 0.3em; color: transparent; width: 1em; height: 1em; vertical-align: -0.36em; margin-right: -0.1em\"><br></span> 44 TERRACOTTA<wbr/>_LIGHT<wbr/>_GRAY</span>",
"label": "(link to Map item format#Color table article, displayed as Map color)"
},
{
"field": "Default (Harp)",
"label": "(link to Note Block#Instruments article, displayed as Note block instrument)"
}
],
"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
| Name | Identifier | Form | Translation key |
|---|---|---|---|
 Test Block | test_block | Block & Item | block |
Block states
| Name | Default value | Allowed values | Description |
|---|---|---|---|
| mode | start | startlogfailaccept | The state the test block is in. |
History
| 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
Sources
- Test Block — Minecraft Wiki, CC BY-NC-SA 3.0, revision 3643260.