Module:Sandbox/Izno

local p = {}

function p.file() --frame
	
	local image = 'File:US 730.svg'
	local title = mw.title.new(image)
	
	local width = title.file.width
	local height = title.file.height
	
	return string.format('%s width: %d, height: %d', image, width, height)
end

function p.basic_iteration(frame)
	
	local pv = require('Module:If preview')
	local t = { 'a', 'b', 'c', 'd', }
	local t2 = { a = 'a', b = 'b', c = 'c', d = 'd' }
	local preview = ''
	for _, v in ipairs(t) do -- guarantees ordering
		preview = preview .. pv._warning({
			v
		})
	end
	for _, v in pairs(t2) do -- doesn't guarantee ordering
		preview = preview .. pv._warning({
			v
		})
	end
	
	return preview
end

local msg = mw.message.newRawMessage

function p.message(frame)
	local messages = {}
	table.insert(messages, 'This is an inserted message')
	local msg1 = msg('This is a $1 message.', 'raw')
	local msg2 = msg('This is a $1 message of $2 quality.', '[[raw]]', '{{icon|fa}}')
	local msg3 = msg('This is a $1 message of $2 quality.', '[[raw]]', '{{icon|fa}}'):plain()
	if frame.args[1] then
		table.insert(messages, frame.args[1])
	end
	
	return -- tostring(messages) .. '\n\n' .. -- this prints string 'table'
		 table.concat(messages) .. tostring(msg1) .. '\n\n' .. tostring(msg2) .. '\n\n' .. tostring(msg3)
end

function p.tostringnil()
	return tostring(nil)
end

function p.tonumber()
	local number = tonumber('')
	local number_type = type(number)
	
	return number .. number_type
end

return p