local p = require('Module:UnitTests')
local roman = require('Module:Roman/sandbox')

function p:test_1__number__toRoman__toArabic()
    local nums = { 0, 5001, 7468, 10000, 12345, 13798, 21856, 123456, 1048576, 4999999999 }
    for i, num in ipairs(nums) do
        self:equals('roman.toArabic(roman._Numeral(' .. num .. '))', roman.toArabic(roman._Numeral(num)), num)
    end
end

function p:test_2_Roman__shorter()
    --old {{Roman}} template produced unnecessarily long Roman numerals for these values
    self:preprocess_equals_many('{{#invoke:Roman/sandbox|Numeral|', '}}', {
        { '9999', 'I̅X̅CMXCIX' },
        { '14999', 'X̅I̅V̅CMXCIX' },
        { '34850', 'X̅X̅X̅I̅V̅DCCCL' },
    })
end

function p:test_3_Roman__misc__formatting()
    self:preprocess_equals_many('{{#invoke:Roman/sandbox|Numeral|', '}}', {
        { '0', 'N' },
        { ' 1', 'I' },
        { '04', 'IV' },
        { '0004', 'IV' },
        { ' 04 ', 'IV' },
        { '5987654321', '5987654321' },
    })
end

function p:test_4_isRoman()
    self:equals('roman.isRoman("")', roman.isRoman(""), false)
    self:equals('roman.isRoman("AbCd")', roman.isRoman("AbCd"), false)
    self:equals('roman.isRoman("第")', roman.isRoman("第"), false)
    self:equals('roman.isRoman("34")', roman.isRoman("34"), false)
    self:equals('roman.isRoman("I")', roman.isRoman("I"), true)
    self:equals('roman.isRoman("ⅩⅣ")', roman.isRoman("ⅩⅣ"), true)
    self:equals('roman.isRoman("V̅")', roman.isRoman("V̅"), true)
end

function p:test_5_Roman__toArabic()
    self:equals('roman.toArabic("")', roman.toArabic(""), nil)
    self:equals('roman.toArabic("AbCd")', roman.toArabic("AbCd"), nil)
    self:equals('roman.toArabic("第")', roman.toArabic("第"), nil)
    self:equals('roman.toArabic("34")', roman.toArabic("34"), 34)
    self:equals('roman.toArabic("  I ")', roman.toArabic("  I "), 1)
    self:equals('roman.toArabic("ⅩⅣ")', roman.toArabic("ⅩⅣ"), 14)
    self:equals('roman.toArabic("  V̅ ")', roman.toArabic("  V̅ "), 5000)

    self:equals('roman.toArabic("I")', roman.toArabic("I"), 1)
    self:equals('roman.toArabic("II")', roman.toArabic("II"), 2)
    self:equals('roman.toArabic("IV")', roman.toArabic("IV"), 4)
    self:equals('roman.toArabic("XIV")', roman.toArabic("XIV"), 14)
    self:equals('roman.toArabic("XLIX")', roman.toArabic("XLIX"), 49)
    self:equals('roman.toArabic("L")', roman.toArabic("L"), 50)
    self:equals('roman.toArabic("LI")', roman.toArabic("LI"), 51)
    self:equals('roman.toArabic("CI")', roman.toArabic("CI"), 101)
    self:equals('roman.toArabic("CCIII")', roman.toArabic("CCIII"), 203)
    self:equals('roman.toArabic("DX")', roman.toArabic("DX"), 510)
    self:equals('roman.toArabic("CMXCIX")', roman.toArabic("CMXCIX"), 999)
    self:equals('roman.toArabic("M")', roman.toArabic("M"), 1000)
    self:equals('roman.toArabic("MXXIV")', roman.toArabic("MXXIV"), 1024)
    self:equals('roman.toArabic("MCMLXXIX")', roman.toArabic("MCMLXXIX"), 1979)
    self:equals('roman.toArabic("MM")', roman.toArabic("MM"), 2000)
    self:equals('roman.toArabic("MMXI")', roman.toArabic("MMXI"), 2011)
    self:equals('roman.toArabic("MMCMXCIX")', roman.toArabic("MMCMXCIX"), 2999)
    self:equals('roman.toArabic("MMM")', roman.toArabic("MMM"), 3000)
    self:equals('roman.toArabic("MMMI")', roman.toArabic("MMMI"), 3001)
    self:equals('roman.toArabic("MMMMCMLXXXVII")', roman.toArabic("MMMMCMLXXXVII"), 4987)
    self:equals('roman.toArabic("MMMMCMXCIX")', roman.toArabic("MMMMCMXCIX"), 4999)
    self:equals('roman.toArabic("V̅")', roman.toArabic("V̅"), 5000)
end

function p:test_6_Compare__Roman__Numeral__with__old__template()
    self:preprocess_equals_preprocess_many(
        '{{#invoke:Roman/sandbox|Numeral|', '}}',
        '{{Roman/old|','}}', {
            { '1' },
            { '2' },
            { '49' },
            { '50' },
            { '51' },
            { '101' },
            { '203' },
            { '510' },
            { '999' },
            { '1024' },
            { '1979' },
            { '2000' },
            { '2011' },
            { '2999' },
            { '3000' },
            { '3001' },
    })
end

function p:test_7_Compare__Roman__Numeral__with__old__template__overlines()
    self:preprocess_equals_preprocess_many(
        '{{#invoke:Roman/sandbox|Numeral|', '}}',
        '{{Roman/old|','}}', {
            { '4987' },
            { '4999' },
            { '5000' },
            { '5001' },
            { '7468' },
            { '10000' },
            { '12345' },
            { '13798' },
            { '21856' },
            { '123456' },
            { '1048576' },
    }, {varying=1})
end

return p