Swift Adventure Lab Mod (26.2, 1.21.1) – Test Custom Data Packs with Dummy

Swift Adventure Lab Mod lets you write and execute automated game tests inside data packs using mcfunction files. The mod provides built-in testing commands to check game conditions, run asynchronous checks, and verify mechanics without manual testing. It works both inside regular worlds and in automated headless server environments.

Features:

• Runs tests written directly inside the test folder of any data pack.
• Adds asynchronous testing capabilities using the await keyword to delay checks across game ticks.
• Spawns controllable dummy players that jump, sneak, sprint, mine, and attack during testing sequences.
• Checks blocks, NBT data, entity selectors, predicates, scores, and recent chat messages.
• Provides header directives such as @template, @timeout, @optional, and @dummy to set up testing scenes.
• Supports headless server runs with automated exit codes and GitHub workflow annotations for continuous testing.

Commands:

• /test runall: Runs all available tests across all loaded data packs.
• /test runall <namespace>: Runs every test from a specified namespace.
• /test run <test>: Runs a single test by its exact name.
• /test runfailed: Re-runs all tests that failed during the previous check.
• /test runthis: Runs the test nearest to your current position.
• /test runthese: Runs all tests located within a 200-block radius.
• /fail <text>: Immediately fails the current test and stops the function.
• /succeed: Marks the current test as passed and stops the function.
• /assert <condition>: Fails the test if the specified condition is false.
• /assert not <condition>: Fails the test if the specified condition is true.
• /await <condition>: Keeps checking a condition each tick until it succeeds or times out.
• /await delay <time>: Pauses test execution for a specified amount of time.
• /dummy <name> spawn: Spawns a fake player into the world for interaction tests.
• /dummy <name> leave: Removes the fake player from the world.
• /dummy <name> attack <entity>: Forces the fake player to attack a target mob.
• /dummy <name> mine <pos>: Forces the fake player to mine a block at a target coordinate.

How to Use:

1. Create a test folder inside your data pack namespace directory.
2. Add an .mcfunction file inside the test folder with your test logic.
3. Add directives like @template or @dummy at the top of the function file.
4. Write assertion commands such as assert or await to check game states.
5. Run /test runall in-game to execute your tests and review the output.

Screenshots:

Swift Adventure Lab Mod Download Links