Add i18n support for 15 additional languages
Extends internationalization support from 2 languages (EN, DE) to 17 total languages, meeting the DatesAPI website's advertised language count. Added languages (15): - Latin script: ES, FR, IT, PT, NL, PL, RU, TR, VI - Non-Latin script: JA, KO, ZhCN, ZhTW, HI, TH Changes: - Added 15 new Lang constants to date.go (using ZhCN/ZhTW naming convention) - Extended all 5 i18n maps in i18n.go with CLDR-accurate translations: * monthNames: 12 months × 15 languages (180 entries) * monthNamesShort: 12 abbreviated months × 15 languages * weekdayNames: 7 weekdays × 15 languages (105 entries) * weekdayNamesShort: 7 abbreviated weekdays × 15 languages * durationUnits: 7 units × 2 forms × 15 languages (210 entries) - Documented plural form limitation for PL/RU (complex plural rules) - Added comprehensive test coverage (135 new test cases) - Verified UTF-8 encoding for non-Latin scripts Test results: - All 955 tests passing - Coverage: 99.5% (exceeds 95% target) - No performance regression (static data only) Closes: quando-cvw
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4 changed files with 596 additions and 15 deletions
307
i18n_test.go
307
i18n_test.go
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@ -3,6 +3,7 @@ package quando
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import (
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"testing"
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"time"
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"unicode/utf8"
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)
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func TestMonthName(t *testing.T) {
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@ -376,3 +377,309 @@ func TestGermanSpecialCharacters(t *testing.T) {
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})
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}
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}
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func TestNewLanguagesMonthNames(t *testing.T) {
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// Representative tests for new languages (Jan, Jun, Dec)
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tests := []struct {
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lang Lang
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month time.Month
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expected string
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}{
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// Spanish
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{ES, time.January, "enero"},
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{ES, time.June, "junio"},
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{ES, time.December, "diciembre"},
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// French
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{FR, time.January, "janvier"},
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{FR, time.June, "juin"},
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{FR, time.December, "décembre"},
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// Italian
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{IT, time.January, "gennaio"},
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{IT, time.June, "giugno"},
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{IT, time.December, "dicembre"},
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// Portuguese
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{PT, time.January, "janeiro"},
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{PT, time.June, "junho"},
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{PT, time.December, "dezembro"},
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// Dutch
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{NL, time.January, "januari"},
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{NL, time.June, "juni"},
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{NL, time.December, "december"},
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// Polish
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{PL, time.January, "styczeń"},
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{PL, time.June, "czerwiec"},
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{PL, time.December, "grudzień"},
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// Russian
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{RU, time.January, "январь"},
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{RU, time.June, "июнь"},
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{RU, time.December, "декабрь"},
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// Turkish
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{TR, time.January, "Ocak"},
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{TR, time.June, "Haziran"},
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{TR, time.December, "Aralık"},
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// Vietnamese
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{VI, time.January, "Tháng 1"},
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{VI, time.June, "Tháng 6"},
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{VI, time.December, "Tháng 12"},
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// Japanese
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{JA, time.January, "1月"},
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{JA, time.June, "6月"},
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{JA, time.December, "12月"},
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// Korean
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{KO, time.January, "1월"},
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{KO, time.June, "6월"},
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{KO, time.December, "12월"},
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// Chinese Simplified
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{ZhCN, time.January, "一月"},
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{ZhCN, time.June, "六月"},
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{ZhCN, time.December, "十二月"},
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// Chinese Traditional
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{ZhTW, time.January, "一月"},
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{ZhTW, time.June, "六月"},
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{ZhTW, time.December, "十二月"},
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// Hindi
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{HI, time.January, "जनवरी"},
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{HI, time.June, "जून"},
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{HI, time.December, "दिसंबर"},
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// Thai
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{TH, time.January, "มกราคม"},
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{TH, time.June, "มิถุนายน"},
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{TH, time.December, "ธันวาคม"},
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}
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for _, tt := range tests {
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t.Run(tt.expected, func(t *testing.T) {
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result := tt.lang.MonthName(tt.month)
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if result != tt.expected {
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t.Errorf("MonthName(%v, %v) = %v, want %v", tt.lang, tt.month, result, tt.expected)
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}
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})
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}
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}
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func TestNewLanguagesWeekdayNames(t *testing.T) {
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// Representative tests for new languages (Mon, Sat)
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tests := []struct {
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lang Lang
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weekday time.Weekday
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expected string
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}{
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// Spanish
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{ES, time.Monday, "lunes"},
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{ES, time.Saturday, "sábado"},
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// French
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{FR, time.Monday, "lundi"},
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{FR, time.Saturday, "samedi"},
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// Italian
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{IT, time.Monday, "lunedì"},
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{IT, time.Saturday, "sabato"},
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// Portuguese
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{PT, time.Monday, "segunda-feira"},
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{PT, time.Saturday, "sábado"},
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// Dutch
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{NL, time.Monday, "maandag"},
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{NL, time.Saturday, "zaterdag"},
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// Polish
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{PL, time.Monday, "poniedziałek"},
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{PL, time.Saturday, "sobota"},
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// Russian
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{RU, time.Monday, "понедельник"},
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{RU, time.Saturday, "суббота"},
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// Turkish
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{TR, time.Monday, "Pazartesi"},
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{TR, time.Saturday, "Cumartesi"},
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// Vietnamese
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{VI, time.Monday, "Thứ Hai"},
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{VI, time.Saturday, "Thứ Bảy"},
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// Japanese
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{JA, time.Monday, "月曜日"},
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{JA, time.Saturday, "土曜日"},
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// Korean
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{KO, time.Monday, "월요일"},
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{KO, time.Saturday, "토요일"},
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// Chinese Simplified
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{ZhCN, time.Monday, "星期一"},
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{ZhCN, time.Saturday, "星期六"},
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// Chinese Traditional
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{ZhTW, time.Monday, "星期一"},
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{ZhTW, time.Saturday, "星期六"},
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// Hindi
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{HI, time.Monday, "सोमवार"},
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{HI, time.Saturday, "शनिवार"},
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// Thai
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{TH, time.Monday, "วันจันทร์"},
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{TH, time.Saturday, "วันเสาร์"},
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}
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for _, tt := range tests {
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t.Run(tt.expected, func(t *testing.T) {
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result := tt.lang.WeekdayName(tt.weekday)
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if result != tt.expected {
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t.Errorf("WeekdayName(%v, %v) = %v, want %v", tt.lang, tt.weekday, result, tt.expected)
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}
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})
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}
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}
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func TestNewLanguagesDurationUnits(t *testing.T) {
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// Representative tests for new languages (year and day, singular/plural)
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tests := []struct {
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lang Lang
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unit string
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plural bool
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expected string
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}{
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// Spanish
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{ES, "year", false, "año"},
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{ES, "year", true, "años"},
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{ES, "day", false, "día"},
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{ES, "day", true, "días"},
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// French
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{FR, "year", false, "an"},
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{FR, "year", true, "ans"},
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{FR, "month", false, "mois"},
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{FR, "month", true, "mois"},
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// Italian
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{IT, "year", false, "anno"},
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{IT, "year", true, "anni"},
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{IT, "hour", false, "ora"},
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{IT, "hour", true, "ore"},
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// Portuguese
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{PT, "year", false, "ano"},
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{PT, "year", true, "anos"},
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{PT, "day", false, "dia"},
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{PT, "day", true, "dias"},
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// Dutch
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{NL, "year", false, "jaar"},
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{NL, "year", true, "jaar"},
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{NL, "month", false, "maand"},
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{NL, "month", true, "maanden"},
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// Polish (using common plural form)
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{PL, "year", false, "rok"},
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{PL, "year", true, "lata"},
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{PL, "month", false, "miesiąc"},
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{PL, "month", true, "miesiące"},
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// Russian (using common plural form)
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{RU, "year", false, "год"},
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{RU, "year", true, "года"},
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{RU, "month", false, "месяц"},
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{RU, "month", true, "месяца"},
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// Turkish
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{TR, "year", false, "yıl"},
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{TR, "year", true, "yıl"},
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{TR, "day", false, "gün"},
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{TR, "day", true, "gün"},
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// Vietnamese
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{VI, "year", false, "năm"},
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{VI, "year", true, "năm"},
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{VI, "day", false, "ngày"},
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{VI, "day", true, "ngày"},
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// Japanese
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{JA, "year", false, "年"},
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{JA, "year", true, "年"},
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{JA, "month", false, "月"},
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{JA, "month", true, "月"},
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// Korean
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{KO, "year", false, "년"},
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{KO, "year", true, "년"},
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{KO, "month", false, "월"},
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{KO, "month", true, "월"},
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// Chinese Simplified
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{ZhCN, "year", false, "年"},
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{ZhCN, "year", true, "年"},
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{ZhCN, "hour", false, "小时"},
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{ZhCN, "hour", true, "小时"},
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// Chinese Traditional
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{ZhTW, "year", false, "年"},
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{ZhTW, "year", true, "年"},
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{ZhTW, "hour", false, "小時"},
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{ZhTW, "hour", true, "小時"},
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// Hindi
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{HI, "year", false, "वर्ष"},
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{HI, "year", true, "वर्ष"},
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{HI, "month", false, "महीना"},
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{HI, "month", true, "महीने"},
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// Thai
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{TH, "year", false, "ปี"},
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{TH, "year", true, "ปี"},
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{TH, "day", false, "วัน"},
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{TH, "day", true, "วัน"},
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}
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for _, tt := range tests {
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pluralStr := "singular"
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if tt.plural {
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pluralStr = "plural"
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}
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name := string(tt.lang) + "_" + tt.unit + "_" + pluralStr
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t.Run(name, func(t *testing.T) {
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result := tt.lang.DurationUnit(tt.unit, tt.plural)
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if result != tt.expected {
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t.Errorf("DurationUnit(%v, %v, %v) = %v, want %v", tt.lang, tt.unit, tt.plural, result, tt.expected)
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}
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})
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}
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}
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func TestUTF8Validity(t *testing.T) {
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// Verify UTF-8 encoding for non-Latin scripts
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tests := []struct {
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name string
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value string
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expected string
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}{
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// Russian (Cyrillic)
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{"Russian January", RU.MonthName(time.January), "январь"},
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{"Russian Monday", RU.WeekdayName(time.Monday), "понедельник"},
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// Japanese (Kanji)
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{"Japanese January", JA.MonthName(time.January), "1月"},
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{"Japanese Monday", JA.WeekdayName(time.Monday), "月曜日"},
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{"Japanese weekday short", JA.WeekdayNameShort(time.Monday), "月"},
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// Korean (Hangul)
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{"Korean January", KO.MonthName(time.January), "1월"},
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{"Korean Monday", KO.WeekdayName(time.Monday), "월요일"},
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// Chinese Simplified
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{"Chinese Simplified January", ZhCN.MonthName(time.January), "一月"},
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{"Chinese Simplified Monday", ZhCN.WeekdayName(time.Monday), "星期一"},
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// Chinese Traditional
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{"Chinese Traditional January", ZhTW.MonthName(time.January), "一月"},
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{"Chinese Traditional Monday", ZhTW.WeekdayName(time.Monday), "星期一"},
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// Hindi (Devanagari)
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{"Hindi January", HI.MonthName(time.January), "जनवरी"},
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{"Hindi Monday", HI.WeekdayName(time.Monday), "सोमवार"},
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// Thai
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{"Thai January", TH.MonthName(time.January), "มกราคม"},
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{"Thai Monday", TH.WeekdayName(time.Monday), "วันจันทร์"},
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// Polish special characters
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{"Polish special char", PL.MonthName(time.January), "styczeń"},
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{"Polish weekday", PL.WeekdayName(time.Wednesday), "środa"},
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// Turkish special characters
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{"Turkish special char", TR.MonthName(time.February), "Şubat"},
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{"Turkish weekday", TR.WeekdayName(time.Wednesday), "Çarşamba"},
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// Spanish special characters
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{"Spanish special char", ES.WeekdayName(time.Wednesday), "miércoles"},
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// French special characters
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{"French special char", FR.MonthName(time.February), "février"},
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{"French December", FR.MonthNameShort(time.December), "déc."},
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// Portuguese special characters
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{"Portuguese March", PT.MonthName(time.March), "março"},
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{"Portuguese month", PT.DurationUnit("month", false), "mês"},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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if tt.value != tt.expected {
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t.Errorf("Expected %v, got %v", tt.expected, tt.value)
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}
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// Verify string is valid UTF-8
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if !isValidUTF8(tt.value) {
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t.Errorf("String %v is not valid UTF-8", tt.value)
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}
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})
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}
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}
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// isValidUTF8 checks if a string is valid UTF-8
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func isValidUTF8(s string) bool {
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return utf8.ValidString(s)
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}
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