Module:Monthly Challenge utils/testcases

local MCU = require('Module:Monthly Challenge utils')
local ScribuntoUnit = require('Module:ScribuntoUnit')
local suite = ScribuntoUnit:new()

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-- Basic tests
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-- test the getNextMonth functions
function suite:test_getNextMonth()
	local y, m = MCU.getNextMonth(2021, 4, 1)
	self:assertEquals(y, 2021)
	self:assertEquals(m, 5)
	
	-- test rollover
	y, m = MCU.getNextMonth(2021, 12, 1)
	self:assertEquals(y, 2022)
	self:assertEquals(m, 1)
	
	-- != 1
	y, m = MCU.getNextMonth(2021, 11, 3)
	self:assertEquals(y, 2022)
	self:assertEquals(m, 2)
end

function suite:test_getPrevMonth()
	local y, m = MCU.getNextMonth(2021, 4, -1)
	self:assertEquals(y, 2021)
	self:assertEquals(m, 3)
	
	-- test rollunder
	y, m = MCU.getNextMonth(2021, 1, -1)
	self:assertEquals(y, 2020)
	self:assertEquals(m, 12)
end

return suite