local p = require('Module:UnitTests')

--[[--------------------------< T E S T _ P A T T E R N S _ G E T >--------------------------------------------

build a table of test patterns where each entry in the table is a table with two members:
	{"<name>", "<tag>"}

TODO: make this series of test smart enough to include:
	disambiguated names
	disambiguated names with dab removed (not so straigh-forward as that appears)
		see Module:Lang/name to tag/sandbox (may get moved to name_from_tag)

]]

local function test_patterns_get(lanauage_list)
	local lang_data =  mw.loadData('Module:Lang/data');								-- language name override and transliteration tool-tip tables
	local override_table = lang_data.override;
	local tpats = {}															-- collect test patterns here
	for tag, names in pairs (lanauage_list) do
		local pattern = {};														-- here we assemble the test pattern for <name>
		if override_table[tag] then
			table.insert (pattern, override_table[tag][1]);					-- add first <name> only to the pattern
			table.insert (pattern, tag);									-- add the 'expected result' <tag>
		else
			table.insert (pattern, names[1]);								-- add first <name> only to the pattern
			table.insert (pattern, tag);									-- add the 'expected result' <tag>
		end
		table.insert (tpats, pattern);										-- accumulate in list of patterns
	end

	local function comp (a, b)													-- local function used by table.sort()
		return a[2] < b[2];														-- ascending sort by code (because test limits are by code)
	end
	
	table.sort (tpats, comp);													-- make the list pretty
	return tpats;																-- and done
end




--[[--------------------------< T E S T _ T A G _ F R O M _ N A M E >------------------------------------------
]]

function p:test_tag_from_name_iso_639_deprecated()
	local test_patterns = test_patterns_get(mw.loadData("Module:Language/data/iana languages").deprecated)
	self:preprocess_equals_preprocess_many('((#invoke:Lang/sandbox|tag_from_name|', '))', '', '', test_patterns, {nowiki=1})
end

function p:test_tag_from_name_iso_639_override()
	local test_patterns = test_patterns_get(mw.loadData('Module:Lang/data').override)
	self:preprocess_equals_preprocess_many('((#invoke:Lang/sandbox|tag_from_name|', '))', '', '', test_patterns, {nowiki=1})
end

return p