cron.lua/spec/cron_spec.lua
2012-10-27 18:44:20 +02:00

132 lines
3.6 KiB
Lua

local cron = require 'cron'
describe( 'cron', function()
local counter = 0
local function count(amount)
amount = amount or 1
counter = counter + amount
end
local countable = setmetatable({}, {__call = count})
before(function()
counter = 0
cron.reset()
end)
describe('.update', function()
it('throws an error if dt is a negative number', function()
assert_error(function() cron.update() end)
assert_error(function() cron.update(-1) end)
assert_not_error(function() cron.update(1) end)
end)
end)
describe('.reset', function()
it('Cancels all timed actions', function()
cron.after(1, count)
cron.after(2, count)
cron.update(1)
assert_equal(counter, 1)
cron.reset()
cron.update(1)
assert_equal(counter, 1)
end)
it('Cancels all periodical actions', function()
cron.every(1, count)
cron.update(1)
assert_equal(counter, 1)
cron.reset()
cron.update(1)
assert_equal(counter, 1)
end)
end)
describe('.after', function()
it('Throws error if time is not a positive number, or callback is not callable', function()
assert_error(function() cron.after('error', count) end)
assert_error(function() cron.after(2, 'error') end)
assert_error(function() cron.after(-2, count) end)
assert_error(function() cron.after(2, {}) end)
assert_not_error(function() cron.after(2, count) end)
assert_not_error(function() cron.after(2, countable) end)
end)
it('Executes timed actions only once, at the right time', function()
cron.after(2, count)
cron.after(4, count)
cron.update(1)
assert_equal(counter, 0)
cron.update(1)
assert_equal(counter, 1)
cron.update(1)
assert_equal(counter, 1)
cron.update(1)
assert_equal(counter, 2)
end)
it('Passes on parameters to the function, if specified', function()
cron.after(1, count, 2)
cron.update(1)
assert_equal(counter, 2)
end)
end)
describe('.every', function()
it('Throws errors if time is not a positive number, or callback is not function', function()
assert_error(function() cron.every('error', count) end)
assert_error(function() cron.every(2, 'error') end)
assert_error(function() cron.every(-2, count) end)
assert_error(function() cron.every(-2, {}) end)
assert_not_error(function() cron.every(2, count) end)
assert_not_error(function() cron.every(2, countable) end)
end)
it('Executes periodical actions periodically', function()
cron.every(3, count)
cron.update(1)
assert_equal(counter, 0)
cron.update(2)
assert_equal(counter, 1)
cron.update(2)
assert_equal(counter, 1)
cron.update(1)
assert_equal(counter, 2)
end)
it('Executes the same action multiple times on a single update if appropiate', function()
cron.every(1, count)
cron.update(2)
assert_equal(counter, 2)
end)
it('Respects parameters', function()
cron.every(1, count, 2)
cron.update(2)
assert_equal(counter, 4)
end)
end)
describe('.cancel', function()
it('Cancels timed entries', function()
local id = cron.after(1, count)
cron.update(1)
assert_equal(counter, 1)
cron.cancel(id)
cron.update(1)
assert_equal(counter, 1)
end)
it('Cancels periodical entries', function()
local id = cron.every(1, count)
cron.update(1)
assert_equal(counter, 1)
cron.cancel(id)
cron.update(1)
assert_equal(counter, 1)
end)
end)
end)