-- 제공합니다. 자세한 것은 위키백과:루아#유닛 테스트를 참조하세요.
-- 사용자를 위한 설명서는 상단의 설명문서를 참고해주세요.
local UnitTester = {}

local frame, tick, cross
local result_table_header = "{|class=\"wikitable\"\n! !! 테스트 구문 !! 기댓값 !! 실젯값"
local result_table = ''
local num_failures = 0

function first_difference
 if s1 == s2 then return '' end
 local max = math.min
 for i = 1, max do
 if s1:sub ~= s2:sub then return i end
 end
 return max + 1
end

function UnitTester:preprocess_equals
 local actual = frame:preprocess(text)
 if actual == expected then
 result_table = result_table .. '| ' .. tick
 else
 result_table = result_table .. '| ' .. cross
 num_failures = num_failures + 1
 end
 local maybe_nowiki = (options and options.nowiki) and mw.text.nowiki or function(...) return ... end
 local differs_at = self.differs_at and (' \n| ' .. first_difference) or ''
 result_table = result_table .. ' \n| ' .. mw.text.nowiki(text) .. ' \n| ' .. maybe_nowiki(expected) .. ' \n| ' .. maybe_nowiki(actual) .. differs_at .. "\n|-\n"
end

function UnitTester:preprocess_equals_many
 for _, case in ipairs(cases) do
 self:preprocess_equals
 end
end

function UnitTester:preprocess_equals_preprocess
 local actual = frame:preprocess(text1)
 local expected = frame:preprocess(text2)
 if actual == expected then
 result_table = result_table .. '| ' .. tick
 else
 result_table = result_table .. '| ' .. cross
 num_failures = num_failures + 1
 end
 local maybe_nowiki = (options and options.nowiki) and mw.text.nowiki or function(...) return ... end
 local differs_at = self.differs_at and (' \n| ' .. first_difference) or ''
 result_table = result_table .. ' \n| ' .. mw.text.nowiki(text1) .. ' \n| ' .. maybe_nowiki(expected) .. ' \n| ' .. maybe_nowiki(actual) .. differs_at .. "\n|-\n"
end

function UnitTester:preprocess_equals_preprocess_many
 for _, case in ipairs(cases) do
 self:preprocess_equals_preprocess(prefix1 .. case[1] .. suffix1, prefix2 .. (case[2] and case[2] or case[1]) .. suffix2, options)
 end
end

function UnitTester:equals
 if actual == expected then
 result_table = result_table .. '| ' .. tick
 else
 result_table = result_table .. '| ' .. cross
 num_failures = num_failures + 1
 end
 local maybe_nowiki = (options and options.nowiki) and mw.text.nowiki or function(...) return ... end
 local differs_at = self.differs_at and (' \n| ' .. first_difference) or ''
 result_table = result_table .. ' \n| ' .. name .. ' \n| ' .. maybe_nowiki(tostring(expected)) .. ' \n| ' .. maybe_nowiki(tostring(actual)) .. differs_at .. "\n|-\n"
end

local function deep_compare
 local ty1 = type(t1)
 local ty2 = type(t2)
 if ty1 ~= ty2 then return false end
 if ty1 ~= 'table' and ty2 ~= 'table' then return t1 == t2 end

 local mt = getmetatable(t1)
 if not ignore_mt and mt and mt.__eq then return t1 == t2 end

 for k1, v1 in pairs(t1) do
 local v2 = t2[k1]
 if v2 == nil or not deep_compare then return false end
 end
 for k2, v2 in pairs(t2) do
 local v1 = t1[k2]
 if v1 == nil or not deep_compare then return false end
 end

 return true
end

function val_to_str(v)
 if type(v) == 'string' then
 v = mw.ustring.gsub
 if mw.ustring.match(mw.ustring.gsub, '^"+$') then
 return "'" .. v .. "'"
 end
 return '"' .. mw.ustring.gsub .. '"'
 else
 return type(v) == 'table' and table_to_str(v) or tostring(v)
 end
end

function table_key_to_str(k)
 if type(k) == 'string' and mw.ustring.match then
 return k
 else
 return '[' .. val_to_str(k) .. ']'
 end
end

function table_to_str(tbl)
 local result, done = {}, {}
 for k, v in ipairs(tbl) do
 table.insert(result, val_to_str(v))
 done[k] = true
 end
 for k, v in pairs(tbl) do
 if not done[k] then
 table.insert(result, table_key_to_str(k) .. '=' .. val_to_str(v))
 end
 end
 return '{' .. table.concat .. '}'
end

function UnitTester:equals_deep
 if deep_compare then
 result_table = result_table .. '| ' .. tick
 else
 result_table = result_table .. '| ' .. cross
 num_failures = num_failures + 1
 end
 local maybe_nowiki = (options and options.nowiki) and mw.text.nowiki or function(...) return ... end
 local actual_str = val_to_str(actual)
 local expected_str = val_to_str(expected)
 local differs_at = self.differs_at and (' \n| ' .. first_difference) or ''
 result_table = result_table .. ' \n| ' .. name .. ' \n| ' .. maybe_nowiki(expected_str) .. ' \n| ' .. maybe_nowiki(actual_str) .. differs_at .. "\n|-\n"
end

function UnitTester:run(frame_arg)
 frame = frame_arg
 self.frame = frame
 self.differs_at = frame.args['differs_at']
 tick = frame:preprocess('')
 cross = frame:preprocess('')

 local table_header = result_table_header
 if self.differs_at then
 table_header = table_header .. ' !! 값이 다르기 시작한 위치'
 end

 -- ABC, 가나다순으로 결과 정렬
 local self_sorted = {}
 for key,value in pairs(self) do
 if key:find('^test') then
 table.insert
 end
 end
 table.sort(self_sorted)
	-- 결과 표에 결과들을 추가
 for i,value in ipairs(self_sorted) do
 result_table = result_table .. "**" .. value .. "**:\n" .. table_header .. "\n|-\n"
 self[value](self)
 result_table = result_table .. "|}\n\n"
 end

 return (num_failures == 0 and "") .. "\n\n" .. frame:preprocess(result_table)
end

function UnitTester:new
 local o = {}
 setmetatable
 self.__index = self
 return o
end

local p = UnitTester:new
function p.run_tests(frame) return p:run(frame) end