-- simple test function with assert and success callback
mtt.register("my test", function(callback)
    assert(my_condition == true)
    callback()
end)

-- test function with error message callback
mtt.register("my test", function(callback)
    if not check_something then
        callback("didn't work :(")
    end
    callback() -- everything ok
end)

-- alternatively, using error:
mtt.register("my test", function(callback)
    if not check_something then
        error("didn't work :(")
    end
    callback() -- everything ok
end

-- test function with an area
mtt.register_with_area("emerged area test", {
    -- the desired area size
    size = { x=10, y=10, z=10 },
    -- optional, area will be emerged first if true
    emerged = true
}, function(pos1, pos2, callback)
    -- execute test on area here
    assert(pos2.x - pos1.x == 9)
    assert(pos2.y - pos1.y == 9)
    assert(pos2.z - pos1.z == 9)
    callback()
end)

-- emerge area for another test that follows
mtt.emerge_area({x=0,y=0,z=0}, {x=32,y=32,z=32})

-- export all nodenames
local filename = minetest.get_worldpath() .. "/nodenames.txt"
mtt.export_nodenames(filename)

-- validate nodenames
mtt.validate_nodenames(minetest.get_modpath("my_mod") .. "/nodenames.txt")

-- simulate a player (EXPERIMENTAL, some methods aren't implemented yet)
local player = mtt.join_player("singleplayer")
player:leave()