lune-packaging/src/tests/task/delay.luau

-- Delaying a task should return the thread that can then be cancelled

local thread = task.delay(0, function() end)
assert(type(thread) == "thread", "Delay should return the thread spawned")

-- Delayed functions should never run right away

local flag: boolean = false
task.delay(0, function()
	flag = true
end)
assert(not flag, "Delay should not run instantly or block")
task.wait(1 / 60)
assert(flag, "Delay should run after the wanted duration")

-- Delayed functions should work with yielding

local flag2: boolean = false
task.delay(0.2, function()
	flag2 = true
	task.wait(0.4)
	flag2 = false
end)
task.wait(0.4)
assert(flag, "Delay should work with yielding (1)")
task.wait(0.4)
assert(not flag2, "Delay should work with yielding (2)")

-- Varargs should get passed correctly

local function fcheck(index: number, type: string, value: any)
	if typeof(value) ~= type then
		console.error(
			string.format(
				"Expected argument #%d to be of type %s, got %s",
				index,
				type,
				console.format(value)
			)
		)
		process.exit(1)
	end
end

local function f(...: any)
	fcheck(1, "string", select(1, ...))
	fcheck(2, "number", select(2, ...))
	fcheck(3, "function", select(3, ...))
end

task.delay(0, f, "", 1, f)
task.delay(0, f, "inf", math.huge, f)
task.delay(0, f, "NaN", 0 / 0, f)