Batch of non-ISO calendar addition tests

test/intl402/Temporal/PlainDate/prototype/add/basic-chinese.js

@@ -0,0 +1,61 @@
+// Copyright (C) 2025 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-temporal.plaindate.prototype.add
+description: Basic addition and subtraction in the chinese calendar
+features: [Temporal, Intl.Era-monthcode]
+includes: [temporalHelpers.js]
+---*/
+
+const calendar = "chinese";
+const options = { overflow: "reject" };
+
+// Years
+
+// Months
+
+const duration1 = new Temporal.Duration(0, 1);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 2019, monthCode: "M11", day: 1, calendar }, options).add(duration1),
+  2019, 12, "M12", 1, "add 1 month, with result in same year"
+);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 2019, monthCode: "M12", day: 1, calendar }, options).add(duration1),
+  2020, 1, "M01", 1, "add 1 month, with result in next year"
+);
+
+// Weeks
+
+const months2weeks3 = new Temporal.Duration(0, /* months = */ 2, /* weeks = */ 3);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 2021, monthCode: "M01", day: 1, calendar }, options).add(months2weeks3),
+  2021, 3, "M03", 22, "add 2 months 3 weeks from non-leap day/month, ending in same year"
+);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 2021, monthCode: "M12", day: 29, calendar }, options).add(months2weeks3),
+  2022, 3, "M03", 21, "add 2 months 3 weeks from end of year to next year"
+);
+
+// Days
+
+const days10 = new Temporal.Duration(0, 0, 0, /* days = */ 10);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 2021, monthCode: "M01", day: 1, calendar }, options).add(days10),
+  2021, 1, "M01", 11, "add 10 days, ending in same month"
+);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 2021, monthCode: "M01", day: 29, calendar }, options).add(days10),
+  2021, 2, "M02", 10, "add 10 days, ending in following month"
+);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 2021, monthCode: "M12", day: 29, calendar }, options).add(days10),
+  2022, 1, "M01", 10, "add 10 days, ending in following year"
+);

test/intl402/Temporal/PlainDate/prototype/add/basic-dangi.js

@@ -0,0 +1,61 @@
+// Copyright (C) 2025 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-temporal.plaindate.prototype.add
+description: Basic addition and subtraction in the dangi calendar
+features: [Temporal, Intl.Era-monthcode]
+includes: [temporalHelpers.js]
+---*/
+
+const calendar = "dangi";
+const options = { overflow: "reject" };
+
+// Years
+
+// Months
+
+const duration1 = new Temporal.Duration(0, 1);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 2019, monthCode: "M11", day: 1, calendar }, options).add(duration1),
+  2019, 12, "M12", 1, "add 1 month, with result in same year"
+);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 2019, monthCode: "M12", day: 1, calendar }, options).add(duration1),
+  2020, 1, "M01", 1, "add 1 month, with result in next year"
+);
+
+// Weeks
+
+const months2weeks3 = new Temporal.Duration(0, /* months = */ 2, /* weeks = */ 3);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 2021, monthCode: "M01", day: 1, calendar }, options).add(months2weeks3),
+  2021, 3, "M03", 22, "add 2 months 3 weeks from non-leap day/month, ending in same year"
+);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 2021, monthCode: "M12", day: 29, calendar }, options).add(months2weeks3),
+  2022, 3, "M03", 21, "add 2 months 3 weeks from end of year to next year"
+);
+
+// Days
+
+const days10 = new Temporal.Duration(0, 0, 0, /* days = */ 10);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 2021, monthCode: "M01", day: 1, calendar }, options).add(days10),
+  2021, 1, "M01", 11, "add 10 days, ending in same month"
+);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 2021, monthCode: "M01", day: 29, calendar }, options).add(days10),
+  2021, 2, "M02", 10, "add 10 days, ending in following month"
+);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 2021, monthCode: "M12", day: 29, calendar }, options).add(days10),
+  2022, 1, "M01", 10, "add 10 days, ending in following year"
+);

test/intl402/Temporal/PlainDate/prototype/add/basic-hebrew.js

@@ -0,0 +1,27 @@
+// Copyright (C) 2025 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-temporal.plaindate.prototype.add
+description: Basic addition and subtraction in the hebrew calendar
+features: [Temporal]
+includes: [temporalHelpers.js]
+---*/
+
+const calendar = "hebrew";
+const options = { overflow: "reject" };
+
+// Years
+
+// Months
+
+// Weeks
+
+// Days
+
+const days10 = new Temporal.Duration(0, 0, 0, /* days = */ 10);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 5785, monthCode: "M01", day: 1, calendar }, options).add(days10),
+  5785, 1, "M01", 11, "adding 10 days", "am", 5785
+);

test/intl402/Temporal/PlainDate/prototype/add/basic-islamic-civil.js

@@ -0,0 +1,81 @@
+// Copyright (C) 2025 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-temporal.plaindate.prototype.add
+description: Basic addition and subtraction in the islamic-civil calendar
+includes: [temporalHelpers.js]
+features: [Temporal, Intl.Era-monthcode]
+---*/
+
+const calendar = "islamic-civil";
+const options = { overflow: "reject" };
+
+// Years
+
+// Months
+
+const date1 = Temporal.PlainDate.from({ year: 1445, monthCode: "M01", day: 1, calendar }, options);
+TemporalHelpers.assertPlainDate(
+  date1.add(new Temporal.Duration(0, 8)),
+  1445, 9, "M09", 1, "Adding 8 months to Muharram 1445 lands in Ramadan",
+  "ah", 1445
+);
+
+TemporalHelpers.assertPlainDate(
+  date1.add(new Temporal.Duration(0, 11)),
+  1445, 12, "M12", 1, "Adding 11 months to Muharram 1445 lands in Dhu al-Hijjah",
+  "ah", 1445
+);
+
+TemporalHelpers.assertPlainDate(
+  date1.add(new Temporal.Duration(0, 12)),
+  1446, 1, "M01", 1, "Adding 12 months to Muharram 1445 lands in Muharram 1446",
+  "ah", 1446
+);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 1445, monthCode: "M06", day: 15, calendar }).add(new Temporal.Duration(0, 13)),
+  1446, 7, "M07", 15, "Adding 13 months to Jumada II 1445 lands in Rajab 1446",
+  "ah", 1446
+);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 1445, monthCode: "M03", day: 15, calendar }, options).add(new Temporal.Duration(0, 6)),
+  1445, 9, "M09", 15, "Adding 6 months to Rabi I 1445 lands in Ramadan",
+  "ah", 1445
+);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 1444, monthCode: "M10", day: 1, calendar }).add(new Temporal.Duration(0, 5)),
+  1445, 3, "M03", 1, "Adding 5 months to Shawwal 1444 crosses to 1445",
+  "ah", 1445
+);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 1400, monthCode: "M01", day: 1, calendar }).add(new Temporal.Duration(0, 100)),
+  1408, 5, "M05", 1, "Adding a large number of months",
+  "ah", 1408
+);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 1445, monthCode: "M09", day: 1, calendar }, options).add(new Temporal.Duration(0, -8)),
+  1445, 1, "M01", 1, "Subtracting 8 months from Ramadan 1445 lands in Muharram",
+  "ah", 1445
+);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 1445, monthCode: "M06", day: 1, calendar }, options).add(new Temporal.Duration(0, -12)),
+  1444, 6, "M06", 1, "Subtracting 12 months from Jumada II 1445 lands in Jumada II 1444",
+  "ah", 1444
+);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 1445, monthCode: "M02", day: 15, calendar }, options).add(new Temporal.Duration(0, -5)),
+  1444, 9, "M09", 15, "Subtracting 5 months from Safar 1445 crosses to Ramadan 1444",
+  "ah", 1444
+);
+
+// Weeks
+
+// Days

test/intl402/Temporal/PlainDate/prototype/add/basic-islamic-tbla.js

@@ -0,0 +1,81 @@
+// Copyright (C) 2025 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-temporal.plaindate.prototype.add
+description: Basic addition and subtraction in the islamic-tbla calendar
+includes: [temporalHelpers.js]
+features: [Temporal, Intl.Era-monthcode]
+---*/
+
+const calendar = "islamic-tbla";
+const options = { overflow: "reject" };
+
+// Years
+
+// Months
+
+const date1 = Temporal.PlainDate.from({ year: 1445, monthCode: "M01", day: 1, calendar }, options);
+TemporalHelpers.assertPlainDate(
+  date1.add(new Temporal.Duration(0, 8)),
+  1445, 9, "M09", 1, "Adding 8 months to Muharram 1445 lands in Ramadan",
+  "ah", 1445
+);
+
+TemporalHelpers.assertPlainDate(
+  date1.add(new Temporal.Duration(0, 11)),
+  1445, 12, "M12", 1, "Adding 11 months to Muharram 1445 lands in Dhu al-Hijjah",
+  "ah", 1445
+);
+
+TemporalHelpers.assertPlainDate(
+  date1.add(new Temporal.Duration(0, 12)),
+  1446, 1, "M01", 1, "Adding 12 months to Muharram 1445 lands in Muharram 1446",
+  "ah", 1446
+);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 1445, monthCode: "M06", day: 15, calendar }).add(new Temporal.Duration(0, 13)),
+  1446, 7, "M07", 15, "Adding 13 months to Jumada II 1445 lands in Rajab 1446",
+  "ah", 1446
+);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 1445, monthCode: "M03", day: 15, calendar }, options).add(new Temporal.Duration(0, 6)),
+  1445, 9, "M09", 15, "Adding 6 months to Rabi I 1445 lands in Ramadan",
+  "ah", 1445
+);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 1444, monthCode: "M10", day: 1, calendar }).add(new Temporal.Duration(0, 5)),
+  1445, 3, "M03", 1, "Adding 5 months to Shawwal 1444 crosses to 1445",
+  "ah", 1445
+);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 1400, monthCode: "M01", day: 1, calendar }).add(new Temporal.Duration(0, 100)),
+  1408, 5, "M05", 1, "Adding a large number of months",
+  "ah", 1408
+);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 1445, monthCode: "M09", day: 1, calendar }, options).add(new Temporal.Duration(0, -8)),
+  1445, 1, "M01", 1, "Subtracting 8 months from Ramadan 1445 lands in Muharram",
+  "ah", 1445
+);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 1445, monthCode: "M06", day: 1, calendar }, options).add(new Temporal.Duration(0, -12)),
+  1444, 6, "M06", 1, "Subtracting 12 months from Jumada II 1445 lands in Jumada II 1444",
+  "ah", 1444
+);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 1445, monthCode: "M02", day: 15, calendar }, options).add(new Temporal.Duration(0, -5)),
+  1444, 9, "M09", 15, "Subtracting 5 months from Safar 1445 crosses to Ramadan 1444",
+  "ah", 1444
+);
+
+// Weeks
+
+// Days

test/intl402/Temporal/PlainDate/prototype/add/basic-islamic-umalqura.js

@@ -0,0 +1,81 @@
+// Copyright (C) 2025 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-temporal.plaindate.prototype.add
+description: Basic addition and subtraction in the islamic-umalqura calendar
+includes: [temporalHelpers.js]
+features: [Temporal, Intl.Era-monthcode]
+---*/
+
+const calendar = "islamic-umalqura";
+const options = { overflow: "reject" };
+
+// Years
+
+// Months
+
+const date1 = Temporal.PlainDate.from({ year: 1445, monthCode: "M01", day: 1, calendar }, options);
+TemporalHelpers.assertPlainDate(
+  date1.add(new Temporal.Duration(0, 8)),
+  1445, 9, "M09", 1, "Adding 8 months to Muharram 1445 lands in Ramadan",
+  "ah", 1445
+);
+
+TemporalHelpers.assertPlainDate(
+  date1.add(new Temporal.Duration(0, 11)),
+  1445, 12, "M12", 1, "Adding 11 months to Muharram 1445 lands in Dhu al-Hijjah",
+  "ah", 1445
+);
+
+TemporalHelpers.assertPlainDate(
+  date1.add(new Temporal.Duration(0, 12)),
+  1446, 1, "M01", 1, "Adding 12 months to Muharram 1445 lands in Muharram 1446",
+  "ah", 1446
+);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 1445, monthCode: "M06", day: 15, calendar }).add(new Temporal.Duration(0, 13)),
+  1446, 7, "M07", 15, "Adding 13 months to Jumada II 1445 lands in Rajab 1446",
+  "ah", 1446
+);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 1445, monthCode: "M03", day: 15, calendar }, options).add(new Temporal.Duration(0, 6)),
+  1445, 9, "M09", 15, "Adding 6 months to Rabi I 1445 lands in Ramadan",
+  "ah", 1445
+);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 1444, monthCode: "M10", day: 1, calendar }).add(new Temporal.Duration(0, 5)),
+  1445, 3, "M03", 1, "Adding 5 months to Shawwal 1444 crosses to 1445",
+  "ah", 1445
+);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 1400, monthCode: "M01", day: 1, calendar }).add(new Temporal.Duration(0, 100)),
+  1408, 5, "M05", 1, "Adding a large number of months",
+  "ah", 1408
+);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 1445, monthCode: "M09", day: 1, calendar }, options).add(new Temporal.Duration(0, -8)),
+  1445, 1, "M01", 1, "Subtracting 8 months from Ramadan 1445 lands in Muharram",
+  "ah", 1445
+);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 1445, monthCode: "M06", day: 1, calendar }, options).add(new Temporal.Duration(0, -12)),
+  1444, 6, "M06", 1, "Subtracting 12 months from Jumada II 1445 lands in Jumada II 1444",
+  "ah", 1444
+);
+
+TemporalHelpers.assertPlainDate(
+  Temporal.PlainDate.from({ year: 1445, monthCode: "M02", day: 15, calendar }, options).add(new Temporal.Duration(0, -5)),
+  1444, 9, "M09", 15, "Subtracting 5 months from Safar 1445 crosses to Ramadan 1444",
+  "ah", 1444
+);
+
+// Weeks
+
+// Days