-- Unit tests for [[Module:Formatnum]]. Click talk page to run tests.
local p = require('Module:UnitTests')
 
function p:test_01_English_basic()
    self:preprocess_equals('{{Formatnum|0|en}}', '0')
    self:preprocess_equals('{{Formatnum|-123|en}}', '−123')
end

function p:test_02_English_precision_rounding()
    self:heading('Comparing Formatnum with Formatnum/old: "Expected" means using Formatnum/old')
    self:preprocess_equals_preprocess_many(
        '{{Formatnum|', '}}',
        '{{Formatnum/old|', '}}',
        {
            {'100|en|prec=1'},
            {'100.0|en|prec=1'},
            {'100.01|en|prec=2'},
            {'100.01|en|prec=3'},
            {'100.010|en|prec=2'},
        })
end

function p:test_03_English_bad_parameters()
    self:heading('Comparing Formatnum with Formatnum/old: "Expected" means using Formatnum/old')
    self:preprocess_equals_preprocess_many(
        '{{Formatnum|', '}}',
        '{{Formatnum/old|', '}}',
        {
            {'.10,00|en'},
            {'.10,00|en|sep='},
            {'100,0.|en'},
            {'100,0.|en|sep='},
            {'100.01|en|prec=-2'},
            {'200.1|en|prec=3.5'},
        }) 
    self:preprocess_equals('{{Formatnum|200.1|en|prec=3,5}}', '200.1')
    self:preprocess_equals('{{Formatnum|200.1|en|prec=a}}', '200.1')
end

function p:test_04_English_unnecessary_signs_removed()
    self:preprocess_equals('{{Formatnum|-0|en}}', '0')
    self:preprocess_equals('{{Formatnum|+123|en}}', '123')
end

function p:test_05_Non_numbers_preserved()
    self:preprocess_equals('{{Formatnum|12:34:45|en}}', '12:34:45')
    self:preprocess_equals('{{Formatnum|12 h 34|fr}}', '12 h 34')
    self:preprocess_equals('{{Formatnum|12:34:45|th}}', '12:34:45')
    self:preprocess_equals('{{Formatnum|12:34:45.00|en}}', '12:34:45.00')
    self:preprocess_equals('{{Formatnum|12°34′45.00″|en}}', '12°34′45.00″')
    self:preprocess_equals('{{Formatnum|some words...|en}}', 'some words...')
end

function p:test_06_Styles_of_decimal_digits()
    self:heading('The choice of decimal system may vary in Malayalam, Sinhalese, Mongolian and Uyghur languages.<br/> Using an explicit script extension to the language code should disambiguate this, but this still does not work.<br/ > In these languages, differences will not be counted as test failures.')
    self:preprocess_equals('{{Formatnum|450|en}}', '450')
    self:preprocess_equals('{{Formatnum|450|as}}', '৪৫০')
    self:preprocess_equals('{{Formatnum|450|bn}}', '৪৫০')
    self:preprocess_equals('{{Formatnum|450|gu}}', '૪૫૦')
    self:preprocess_equals('{{Formatnum|450|hi}}', '४५०')
    self:preprocess_equals('{{Formatnum|450|kn}}', '೪೫೦')
    self:preprocess_equals('{{Formatnum|450|ml-Latn}}', '450') -- displayed with Hindu-Arabic/Latin digits
    self:preprocess_equals('{{Formatnum|450|ml}}', '450', {varying=1}) -- displayed with Hindu-Arabic/Latin digits (for modern use)
    self:preprocess_equals('{{Formatnum|450|ml-Mlym}}', '൪൫൦', {varying=1}) -- displayed INCORRECTLY with Hindu-Arabic/Latin digits
    self:preprocess_equals('{{Formatnum|450|or}}', '୪୫୦')
    self:preprocess_equals('{{Formatnum|450|si-Latn}}', '450') -- displayed with Hindu-Arabic/Latin digits
    self:preprocess_equals('{{Formatnum|450|si}}', '450', {varying=1}) -- displayed with Hindu-Arabic/Latin digits (is it really preferred in modern use?)
    self:preprocess_equals('{{Formatnum|450|si-Sinh}}', '෪෫෦', {varying=1}) -- displayed INCORRECTLY with Hindu-Arabic/Latin digits
    self:preprocess_equals('{{Formatnum|450|ta}}', '௪௫௦')
    self:preprocess_equals('{{Formatnum|450|te}}', '౪౫౦')
    self:preprocess_equals('{{Formatnum|450|bo}}', '༤༥༠')
    self:preprocess_equals('{{Formatnum|450|dz}}', '༤༥༠')
    self:preprocess_equals('{{Formatnum|450|mn-Tibt}}', '༤༥༠', {varying=1}) -- displayed INCORRECTLY with Hindu-Arabic/Latin/Cyrillic digits
    self:preprocess_equals('{{Formatnum|450|mn-Mong}}', '᠔᠕᠐', {varying=1}) -- displayed INCORRECTLY with Hindu-Arabic/Latin/Cyrillic digits
    self:preprocess_equals('{{Formatnum|450|mn}}', '᠔᠕᠐', {varying=1}) -- displayed with Mongolian digits (is it really preferred in modern use?)
    self:preprocess_equals('{{Formatnum|450|mn-Cyrl}}', '450') -- displayed with with Hindu-Arabic/Latin/Cyrillic digits
    self:preprocess_equals('{{Formatnum|450|th}}', '๔๕๐')
    self:preprocess_equals('{{Formatnum|450|km}}', '៤៥០')
    self:preprocess_equals('{{Formatnum|450|lo}}', '໔໕໐')
    self:preprocess_equals('{{Formatnum|450|ar}}', '٤٥٠')
    self:preprocess_equals('{{Formatnum|450|fa}}', '۴۵۰')
    self:preprocess_equals('{{Formatnum|450|ps}}', '۴۵۰')
    self:preprocess_equals('{{Formatnum|450|ks}}', '۴۵۰')
    self:preprocess_equals('{{Formatnum|450|ug-Cyrl}}', '450') -- displayed with Hindu-Arabic/Latin/Cyrillic digits
    self:preprocess_equals('{{Formatnum|450|ug-Latn}}', '450') -- displayed with Hindu-Arabic/Latin/Cyrillic digits
    self:preprocess_equals('{{Formatnum|450|ug}}', '450', {varying=1}) -- displayed with Hindu-Arabic/Latin/Cyrillic digits (is it really preferred in modern use?)
    self:preprocess_equals('{{Formatnum|450|ug-Arab}}', '۴۵۰', {varying=1}) -- displayed INCORRECTLY with Hindu-Arabic/Latin/Cyrillic digits
end

function p:test_07_Decimal_separator()
    self:heading('Basic cases generating a decimal separator appropriate to each language')
    self:preprocess_equals('{{Formatnum|123.45|de}}', '123,45')
    self:preprocess_equals('{{Formatnum|123.45|en}}', '123.45')
    self:preprocess_equals('{{Formatnum|123.45|fr}}', '123,45')
    self:preprocess_equals('{{Formatnum|123.45|sv}}', '123,45')
    self:heading('There should be no trailing decimal separator for integer values')
    self:preprocess_equals('{{Formatnum|123.|en}}', '123')
    self:preprocess_equals('{{Formatnum|123.|fr}}', '123')
    self:preprocess_equals('{{Formatnum|123.00|en}}', '123')
    self:preprocess_equals('{{Formatnum|123.00|fr}}', '123')
    self:heading('There should be at least a leading zero before the decimal separator for small non-zero absolute values')
    self:preprocess_equals('{{Formatnum|.12345|en}}', '0.12345')
    self:preprocess_equals('{{Formatnum|.12345|fr}}', '0,12345')
    self:preprocess_equals('{{Formatnum|-.12345|en}}', '−0.12345')
    self:preprocess_equals('{{Formatnum|-.12345|fr}}', '−0,12345')
end

function p:test_08_Grouping_separators()
    self:heading('There should be grouping separators appropriate to each language')
    self:preprocess_equals('{{Formatnum|123456789|de}}', '123.456.789')
    self:preprocess_equals('{{Formatnum|123456789|en}}', '123,456,789')
    -- self:preprocess_equals('{{Formatnum|123456789|fr}}', '123&nbsp;456&nbsp;789') -- see test 08 below
    self:preprocess_equals('{{Formatnum|123456789|ml}}', '12,34,56,789')
    self:heading('Below there should be no grouping separators in any language')
    self:preprocess_equals('{{Formatnum|123456789|de|sep=1}}', '123456789')
    self:preprocess_equals('{{Formatnum|123456789|en|sep=1}}', '123456789')
    self:preprocess_equals('{{Formatnum|123456789|fr|sep=1}}', '123456789')
    self:preprocess_equals('{{Formatnum|123456789|ml|sep=1}}', '123456789')
end

function p:test_09_Legacy_HTML_entity_or_native_UTF8()
    self:heading('Comparing Formatnum with Formatnum/old: "Expected" means using Formatnum/old.<br /> Actual and expected results are HTMLized in wikitext source format.<br /> Differences will not be counted as test failures.')
    self:preprocess_equals_preprocess_many(
        '{{Formatnum|123456789|', '}}',
        '{{Formatnum/old|123456789|', '}}',
        {
            {'en'}, -- this is OK (see the 2 first lines above)
            {'fr'}, -- this fails when comparing them (difference of encoding for NBSP; see the next test)
            {'br'}, -- this fails when comparing them (the old template had a problem, unexpectedly generating a comma; see the following 2 lines above)
            {'co'}, -- this fails when comparing them (the old template had a problem, unexpectedly generating a comma)
            {'oc'}, -- this fails when comparing them (the old template had a problem, unexpectedly generating a comma)
            {'ty'}, -- this fails when comparing them (the old template had a problem, unexpectedly generating a comma)
            {'pl'} -- this fails when comparing them (difference of encoding for NBSP; see the next test)
        }, {htmlize=1, varying=1} -- don't fail, just warn
    )
end

function p:test_10_Legacy_HTML_entity_or_native_UTF8_asserts()
    self:heading('Actual and expected results are HTMLized in wikitext source format.')
    self:preprocess_equals('{{Formatnum|12345|en}}', '12,345',  {htmlize=1})
    self:preprocess_equals('{{Formatnum/old|12345|en}}', '12,345',  {htmlize=1})
    self:heading('Grouping separators may be non-breaking spaces (preferably narrow), they have several HTML representations.<br /> Possible differences below will not be counted as failures.')
    self:preprocess_equals('{{Formatnum|12345|fr}}', '12\194\160345',  {htmlize=1, varying=1}) -- "\194\160" in Lua litterals is NBSP (U+00A0) encoded in UTF-8 (0xC2,0xA0)
    self:preprocess_equals('{{Formatnum/old|12345|fr}}', '12&nbsp;345', {htmlize=1, varying=1}) -- this difference should be corrected: the old template version generated HTML entities
    self:preprocess_equals('{{Formatnum|12345|pl}}', '12\194\160345',  {htmlize=1, varying=1}) -- "\194\160" in Lua litterals is NBSP (U+00A0) encoded in UTF-8 (0xC2,0xA0)
    self:preprocess_equals('{{Formatnum/old|12345|pl}}', '12&nbsp;345', {htmlize=1, varying=1}) -- this difference should be corrected: the old template version generated HTML entities
end

function p:test_11_Legacy_grouping_separators()
    self:heading('Comparing Formatnum with Formatnum/old: "Expected" means using Formatnum/old.<br /> Actual and expected results are HTMLized in wikitext source format.<br /> Differences will not be counted as test failures.')
    self:preprocess_equals_preprocess_many(
        '{{Formatnum|1234567890|', '}}',
        '{{Formatnum/old|1234567890|', '}}',
        {   -- for each case below, this uses the same value to compare the preprocessed (prefix1..case..suffix1) with the preprocessed (prefix2..case..suffix2)
            {'en'},
            {'ru'},
            {'hy'},
            {'ka'},
            {'mn'},
            {'as'},
            {'bn'},
            {'gu'},
            {'hi'},
            {'kn'},
            {'ml'},
            {'or'},
            {'pa'},
            {'ta'},
            {'te'},
            {'bo'},
            {'th'},
            {'km'},
            {'lo'},
            {'ja'},
            {'ko'},
            {'zh'},
            {'zh-hans'},
            {'zh-hant'},
            {'wuu'},
            {'yue'},
            {'he'},
            {'yi'},
        }, 
        {varying=1} -- don't fail, just warn
    )
    self:heading('The Arabic script normally uses its own grouping separator U+066C (not to be confused with U+066B for its decimal separator).<br /> It also uses two different styles of digits: Western digits for standard Arabic and related languages in Africa, and Eastern digits for Farsi and related languages in Central Asia.<br /> In India or China, Latin-Arabic digits may be used with the ASCII comma U+0044 for the grouping separator.')
    self:preprocess_equals_preprocess_many(
        '{{Formatnum|1234567890|', '}}',
        '{{Formatnum/old|1234567890|', '}}',
        {   -- for each case below, this uses the same value to compare the preprocessed (prefix1..case..suffix1) with the preprocessed (prefix2..case..suffix2)
            {'ar'},
            {'fa'},
            {'ps'},
            {'ks'},
            {'ur'},
            {'ug'},
        }, 
        {varying=1} -- don't fail, just warn
    )
end

function p:test_99_Unsupported_languages_using_user_default_language_instead()
    self:heading('Results may vary depending on supported language of the user if it uses non-ASCII digits.<br /> Differences will not be counted as test failures.')
    self:preprocess_equals('{{Formatnum|100000|sep=1}}', '100000',  {varying=1} )
    self:preprocess_equals('{{Formatnum|100000||sep=1}}', '100000',  {varying=1} )
    self:preprocess_equals('{{Formatnum|100000|qq|sep=1}}', '100000',  {varying=1} )
    self:preprocess_equals('{{Formatnum|100000|qqa|sep=1}}', '100000',  {varying=1} )
    self:preprocess_equals('{{Formatnum|100000|mul|sep=1}}', '100000',  {varying=1} )
    self:preprocess_equals('{{Formatnum|100000|und|sep=1}}', '100000',  {varying=1} )
    self:preprocess_equals('{{Formatnum|100000|root|sep=1}}', '100000',  {varying=1} )
    self:preprocess_equals('{{Formatnum|100000|user|sep=1}}', '100000',  {varying=1} )
    self:preprocess_equals('{{Formatnum|100000|invalid|sep=1}}', '100000',  {varying=1} )
    self:heading('If too many languages are used (more than 20?), they may behave like default languages.<br /> Differences will not be counted as test failures.')
    self:preprocess_equals('{{Formatnum|100000|aa|sep=1}}', '100000',  {varying=1} ) -- Afar
    self:preprocess_equals('{{Formatnum|100000|ab|sep=1}}', '100000',  {varying=1} ) -- Abkhaz
    self:preprocess_equals('{{Formatnum|100000|ace|sep=1}}', '100000',  {varying=1} ) -- Acehnese
    self:preprocess_equals('{{Formatnum|100000|mwl|sep=1}}', '100000',  {varying=1} ) -- Mirandese
    self:preprocess_equals('{{Formatnum|100000|ydd|sep=1}}', '100000',  {varying=1} ) -- Eastern Yiddish
    self:preprocess_equals('{{Formatnum|100000|zea|sep=1}}', '100000',  {varying=1} ) -- Zealandic
end

return p