Source code
Revision control
Copy as Markdown
Other Tools
// |reftest| skip-if(!this.hasOwnProperty("Intl"))
const {
Era, Year, YearName, RelatedYear, Month, Day, Literal
} = DateTimeFormatParts
const tests = [
// Test with non-leap month.
{
date: new Date("2020-04-23T00:00:00Z"),
options: {},
calendar: "chinese",
locales: {
"en": [Month("4"), Literal("/"), Day("1"), Literal("/"), RelatedYear("2020")],
"de": [Day("1"), Literal("."), Month("4"), Literal("."), Year("37")],
"ja": [YearName("庚子"), Literal("-"), Month("4"), Literal("-"), Day("1")],
"zh": [RelatedYear("2020"), Literal("年"), Month("四月"), Day("1")],
"ar-EG": [RelatedYear("٢٠٢٠"), Literal("-"), Month("٠٤"), Literal("-"), Day("٠١")],
}
},
// Test with leap month.
{
date: new Date("2020-05-23T00:00:00Z"),
options: {},
calendar: "chinese",
locales: {
"en": [Month("4bis"), Literal("/"), Day("1"), Literal("/"), RelatedYear("2020")],
"de": [Day("1"), Literal("."), Month("4bis"), Literal("."), Year("37")],
"ja": [YearName("庚子"), Literal("-"), Month("閏4"), Literal("-"), Day("1")],
"zh": [RelatedYear("2020"), Literal("年"), Month("闰四月"), Day("1")],
"ar-EG": [RelatedYear("٢٠٢٠"), Literal("-"), Month("٠٤bis"), Literal("-"), Day("٠١")],
}
},
// Display only "year" field.
{
date: new Date("2020-04-23T00:00:00Z"),
options: {year: "numeric"},
calendar: "chinese",
locales: {
"en": [RelatedYear("2020"), Literal("("), YearName("geng-zi"), Literal(")")],
"de": [YearName("geng-zi")],
"ja": [YearName("庚子"), Literal("年")],
"zh": [RelatedYear("2020"), YearName("庚子"), Literal("年")],
"ar-EG": [RelatedYear("٢٠٢٠"), Literal("("), YearName("geng-zi"), Literal(")")],
}
},
// Display only "month" field.
{
date: new Date("2020-04-23T00:00:00Z"),
options: {month: "long"},
calendar: "chinese",
locales: {
"en": [Month("Fourth Month")],
"de": [Month("M04")],
"ja": [Month("四月")],
"zh": [Month("四月")],
"ar-EG": [Month("M04")],
}
},
// Display only "month" field. (Leap month)
{
date: new Date("2020-05-23T00:00:00Z"),
options: {month: "long"},
calendar: "chinese",
locales: {
"en": [Month("Fourth Monthbis")],
"de": [Month("M04bis")],
"ja": [Month("閏四月")],
"zh": [Month("闰四月")],
"ar-EG": [Month("M04bis")],
}
},
// Display "year" and "month" fields.
{
date: new Date("2020-04-23T00:00:00Z"),
options: {year: "numeric", month: "long"},
calendar: "chinese",
locales: {
"en": [Month("Fourth Month"), Literal(" "), RelatedYear("2020"), Literal("("), YearName("geng-zi"), Literal(")")],
"de": [Month("M04"), Literal(" "), YearName("geng-zi")],
"ja": [YearName("庚子"), Literal("年"), Month("四月")],
"zh": [RelatedYear("2020"), YearName("庚子"), Literal("年"), Month("四月")],
"ar-EG": [RelatedYear("٢٠٢٠"), Literal("("), YearName("geng-zi"), Literal(") "), Month("M04")],
}
},
// Display "year" and "month" fields. (Leap month)
{
date: new Date("2020-05-23T00:00:00Z"),
options: {year: "numeric", month: "long"},
calendar: "chinese",
locales: {
"en": [Month("Fourth Monthbis"), Literal(" "), RelatedYear("2020"), Literal("("), YearName("geng-zi"), Literal(")")],
"de": [Month("M04bis"), Literal(" "), YearName("geng-zi")],
"ja": [YearName("庚子"), Literal("年"), Month("閏四月")],
"zh": [RelatedYear("2020"), YearName("庚子"), Literal("年"), Month("闰四月")],
"ar-EG": [RelatedYear("٢٠٢٠"), Literal("("), YearName("geng-zi"), Literal(") "), Month("M04bis")],
}
},
// Related year in traditional Korean calendar.
{
date: new Date("2019-01-01T00:00:00Z"),
options: {},
calendar: "dangi",
locales: {
"en": [Month("11"), Literal("/"), Day("26"), Literal("/"), RelatedYear("2018")],
"ko": [RelatedYear("2018"), Literal(". "), Month("11"), Literal(". "), Day("26"), Literal(".")],
}
},
// Allowing the calendar to modify the pattern selection choice can result in falling back to
// the root locale patterns in more cases. That can result in displaying the era field by
// default, among other things.
{
date: new Date("2019-01-01T00:00:00Z"),
options: {},
calendar: "buddhist",
locales: {
"en": [Month("1"), Literal("/"), Day("1"), Literal("/"), Year("2562"), Literal(" "), Era("BE")],
"th": [Day("1"), Literal("/"), Month("1"), Literal("/"), Year("2562")],
}
},
{
date: new Date("2019-01-01T00:00:00Z"),
options: {},
calendar: "hebrew",
locales: {
"en": [Day("24"), Literal(" "), Month("Tevet"), Literal(" "), Year("5779")],
"he": [Day("24"), Literal(" ב"), Month("טבת"), Literal(" "), Year("5779")],
"fr": [Day("24"), Literal("/"), Month("04"), Literal("/"), Year("5779"), Literal(" "), Era("A. M.")],
}
},
{
date: new Date("2019-01-01T00:00:00Z"),
options: {},
calendar: "islamic",
locales: {
"en": [Month("4"), Literal("/"), Day("25"), Literal("/"), Year("1440"), Literal(" "), Era("AH")],
"ar-EG": [Day("٢٥"), Literal("\u200F/"), Month("٤"), Literal("\u200F/"), Year("١٤٤٠"), Literal(" "), Era("هـ")],
}
},
{
date: new Date("2019-01-01T00:00:00Z"),
options: {},
calendar: "japanese",
locales: {
"en": [Month("1"), Literal("/"), Day("1"), Literal("/"), Year("31"), Literal(" "), Era("H")],
"ja": [Era("H"), Year("31"), Literal("/"), Month("1"), Literal("/"), Day("1")],
}
},
{
date: new Date("2019-01-01T00:00:00Z"),
options: {},
calendar: "persian",
locales: {
"en": [Month("10"), Literal("/"), Day("11"), Literal("/"), Year("1397"), Literal(" "), Era("AP")],
"fa": [Year("۱۳۹۷"), Literal("/"), Month("۱۰"), Literal("/"), Day("۱۱")],
}
},
{
date: new Date("2019-01-01T00:00:00Z"),
options: {},
calendar: "roc",
locales: {
"en": [Month("1"), Literal("/"), Day("1"), Literal("/"), Year("108"), Literal(" "), Era("Minguo")],
"zh-Hant-TW": [Era("民國"), Year("108"), Literal("/"), Month("1"), Literal("/"), Day("1")],
}
},
];
for (let {date, options, calendar, locales} of tests) {
for (let [locale, result] of Object.entries(locales)) {
let df = new Intl.DateTimeFormat(`${locale}-u-ca-${calendar}`, {timeZone: "UTC", ...options});
assertParts(df, date, result);
}
}
if (typeof reportCompare === "function")
reportCompare(0, 0, "ok");