Regularize "calendar-case-insensitive" tests

For each entry point where a string calendar name is accepted, we should
have a test that ensures the calendar name is case-insensitive. These
tests existed but several were incomplete as they didn't take nested
properties into account, and several entry points were missing this test.

Fix a minor copy-paste issue with double semicolons.

test/built-ins/Temporal/Calendar/prototype/dateAdd/argument-propertybag-calendar-case-insensitive.js

@@ -12,6 +12,10 @@ const instance = new Temporal.Calendar("iso8601");
 
 const calendar = "IsO8601";
 
-const arg = { year: 1976, monthCode: "M11", day: 18, calendar };
-const result = instance.dateAdd(arg, new Temporal.Duration());
-TemporalHelpers.assertPlainDate(result, 1976, 11, "M11", 18, `Calendar created from string "${calendar}"`);
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+const result1 = instance.dateAdd(arg, new Temporal.Duration());
+TemporalHelpers.assertPlainDate(result1, 1976, 11, "M11", 18, "Calendar is case-insensitive");
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+const result2 = instance.dateAdd(arg, new Temporal.Duration());
+TemporalHelpers.assertPlainDate(result2, 1976, 11, "M11", 18, "Calendar is case-insensitive (nested property)");

test/built-ins/Temporal/Calendar/prototype/dateUntil/argument-propertybag-calendar-case-insensitive.js

@@ -0,0 +1,25 @@
+// Copyright (C) 2022 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-temporal.calendar.prototype.dateuntil
+description: The calendar name is case-insensitive
+includes: [temporalHelpers.js]
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = "IsO8601";
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+const result1 = instance.dateUntil(arg, new Temporal.PlainDate(1976, 11, 19));
+TemporalHelpers.assertDuration(result1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, "Calendar is case-insensitive (first argument)");
+const result2 = instance.dateUntil(new Temporal.PlainDate(1976, 11, 19), arg);
+TemporalHelpers.assertDuration(result2, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, "Calendar is case-insensitive (second argument)");
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+const result3 = instance.dateUntil(arg, new Temporal.PlainDate(1976, 11, 19));
+TemporalHelpers.assertDuration(result3, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, "Calendar is case-insensitive (nested property, first argument)");
+const result4 = instance.dateUntil(new Temporal.PlainDate(1976, 11, 19), arg);
+TemporalHelpers.assertDuration(result4, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, "Calendar is case-insensitive (nested property, second argument)");

test/built-ins/Temporal/Calendar/prototype/day/argument-propertybag-calendar-case-insensitive.js

@@ -11,6 +11,10 @@ const instance = new Temporal.Calendar("iso8601");
 
 const calendar = "IsO8601";
 
-const arg = { year: 1976, monthCode: "M11", day: 18, calendar };
-const result = instance.day(arg);
-assert.sameValue(result, 18, `Calendar created from string "${calendar}"`);
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+const result1 = instance.day(arg);
+assert.sameValue(result1, 18, "Calendar is case-insensitive");
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+const result2 = instance.day(arg);
+assert.sameValue(result2, 18, "Calendar is case-insensitive (nested property)");

test/built-ins/Temporal/Calendar/prototype/dayOfWeek/argument-propertybag-calendar-case-insensitive.js

@@ -11,6 +11,10 @@ const instance = new Temporal.Calendar("iso8601");
 
 const calendar = "IsO8601";
 
-const arg = { year: 1976, monthCode: "M11", day: 18, calendar };
-const result = instance.dayOfWeek(arg);
-assert.sameValue(result, 4, `Calendar created from string "${calendar}"`);
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+const result1 = instance.dayOfWeek(arg);
+assert.sameValue(result1, 4, "Calendar is case-insensitive");
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+const result2 = instance.dayOfWeek(arg);
+assert.sameValue(result2, 4, "Calendar is case-insensitive (nested property)");

test/built-ins/Temporal/Calendar/prototype/dayOfYear/argument-propertybag-calendar-case-insensitive.js

@@ -11,6 +11,10 @@ const instance = new Temporal.Calendar("iso8601");
 
 const calendar = "IsO8601";
 
-const arg = { year: 1976, monthCode: "M11", day: 18, calendar };
-const result = instance.dayOfYear(arg);
-assert.sameValue(result, 323, `Calendar created from string "${calendar}"`);
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+const result1 = instance.dayOfYear(arg);
+assert.sameValue(result1, 323, "Calendar is case-insensitive");
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+const result2 = instance.dayOfYear(arg);
+assert.sameValue(result2, 323, "Calendar is case-insensitive (nested property)");

test/built-ins/Temporal/Calendar/prototype/daysInMonth/argument-propertybag-calendar-case-insensitive.js

@@ -11,6 +11,10 @@ const instance = new Temporal.Calendar("iso8601");
 
 const calendar = "IsO8601";
 
-const arg = { year: 1976, monthCode: "M11", day: 18, calendar };
-const result = instance.daysInMonth(arg);
-assert.sameValue(result, 30, `Calendar created from string "${calendar}"`);
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+const result1 = instance.daysInMonth(arg);
+assert.sameValue(result1, 30, "Calendar is case-insensitive");
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+const result2 = instance.daysInMonth(arg);
+assert.sameValue(result2, 30, "Calendar is case-insensitive (nested property)");

test/built-ins/Temporal/Calendar/prototype/daysInWeek/argument-propertybag-calendar-case-insensitive.js

@@ -11,6 +11,10 @@ const instance = new Temporal.Calendar("iso8601");
 
 const calendar = "IsO8601";
 
-const arg = { year: 1976, monthCode: "M11", day: 18, calendar };
-const result = instance.daysInWeek(arg);
-assert.sameValue(result, 7, `Calendar created from string "${calendar}"`);
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+const result1 = instance.daysInWeek(arg);
+assert.sameValue(result1, 7, "Calendar is case-insensitive");
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+const result2 = instance.daysInWeek(arg);
+assert.sameValue(result2, 7, "Calendar is case-insensitive (nested property)");

test/built-ins/Temporal/Calendar/prototype/daysInYear/argument-propertybag-calendar-case-insensitive.js

@@ -11,6 +11,10 @@ const instance = new Temporal.Calendar("iso8601");
 
 const calendar = "IsO8601";
 
-const arg = { year: 1976, monthCode: "M11", day: 18, calendar };
-const result = instance.daysInYear(arg);
-assert.sameValue(result, 366, `Calendar created from string "${calendar}"`);
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+const result1 = instance.daysInYear(arg);
+assert.sameValue(result1, 366, "Calendar is case-insensitive");
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+const result2 = instance.daysInYear(arg);
+assert.sameValue(result2, 366, "Calendar is case-insensitive (nested property)");

test/built-ins/Temporal/Calendar/prototype/inLeapYear/argument-propertybag-calendar-case-insensitive.js

@@ -11,6 +11,10 @@ const instance = new Temporal.Calendar("iso8601");
 
 const calendar = "IsO8601";
 
-const arg = { year: 1976, monthCode: "M11", day: 18, calendar };
-const result = instance.inLeapYear(arg);
-assert.sameValue(result, true, `Calendar created from string "${calendar}"`);
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+const result1 = instance.inLeapYear(arg);
+assert.sameValue(result1, true, "Calendar is case-insensitive");
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+const result2 = instance.inLeapYear(arg);
+assert.sameValue(result2, true, "Calendar is case-insensitive (nested property)");

test/built-ins/Temporal/Calendar/prototype/month/argument-propertybag-calendar-case-insensitive.js

@@ -11,6 +11,10 @@ const instance = new Temporal.Calendar("iso8601");
 
 const calendar = "IsO8601";
 
-const arg = { year: 1976, monthCode: "M11", day: 18, calendar };
-const result = instance.month(arg);
-assert.sameValue(result, 11, `Calendar created from string "${calendar}"`);
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+const result1 = instance.month(arg);
+assert.sameValue(result1, 11, "Calendar is case-insensitive");
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+const result2 = instance.month(arg);
+assert.sameValue(result2, 11, "Calendar is case-insensitive (nested property)");

test/built-ins/Temporal/Calendar/prototype/monthCode/argument-propertybag-calendar-case-insensitive.js

@@ -11,6 +11,10 @@ const instance = new Temporal.Calendar("iso8601");
 
 const calendar = "IsO8601";
 
-const arg = { year: 1976, monthCode: "M11", day: 18, calendar };
-const result = instance.monthCode(arg);
-assert.sameValue(result, "M11", `Calendar created from string "${calendar}"`);
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+const result1 = instance.monthCode(arg);
+assert.sameValue(result1, "M11", "Calendar is case-insensitive");
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+const result2 = instance.monthCode(arg);
+assert.sameValue(result2, "M11", "Calendar is case-insensitive (nested property)");

test/built-ins/Temporal/Calendar/prototype/monthsInYear/argument-propertybag-calendar-case-insensitive.js

@@ -11,6 +11,10 @@ const instance = new Temporal.Calendar("iso8601");
 
 const calendar = "IsO8601";
 
-const arg = { year: 1976, monthCode: "M11", day: 18, calendar };
-const result = instance.monthsInYear(arg);
-assert.sameValue(result, 12, `Calendar created from string "${calendar}"`);
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+const result1 = instance.monthsInYear(arg);
+assert.sameValue(result1, 12, "Calendar is case-insensitive");
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+const result2 = instance.monthsInYear(arg);
+assert.sameValue(result2, 12, "Calendar is case-insensitive (nested property)");

test/built-ins/Temporal/Calendar/prototype/weekOfYear/argument-propertybag-calendar-case-insensitive.js

@@ -11,6 +11,10 @@ const instance = new Temporal.Calendar("iso8601");
 
 const calendar = "IsO8601";
 
-const arg = { year: 1976, monthCode: "M11", day: 18, calendar };
-const result = instance.weekOfYear(arg);
-assert.sameValue(result, 47, `Calendar created from string "${calendar}"`);
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+const result1 = instance.weekOfYear(arg);
+assert.sameValue(result1, 47, "Calendar is case-insensitive");
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+const result2 = instance.weekOfYear(arg);
+assert.sameValue(result2, 47, "Calendar is case-insensitive (nested property)");

test/built-ins/Temporal/Calendar/prototype/year/argument-propertybag-calendar-case-insensitive.js

@@ -11,6 +11,10 @@ const instance = new Temporal.Calendar("iso8601");
 
 const calendar = "IsO8601";
 
-const arg = { year: 1976, monthCode: "M11", day: 18, calendar };
-const result = instance.year(arg);
-assert.sameValue(result, 1976, `Calendar created from string "${calendar}"`);
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+const result1 = instance.year(arg);
+assert.sameValue(result1, 1976, "Calendar is case-insensitive");
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+const result2 = instance.year(arg);
+assert.sameValue(result2, 1976, "Calendar is case-insensitive (nested property)");

test/built-ins/Temporal/Calendar/prototype/yearOfWeek/argument-propertybag-calendar-case-insensitive.js

@@ -0,0 +1,20 @@
+// Copyright (C) 2022 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-temporal.calendar.prototype.yearofweek
+description: The calendar name is case-insensitive
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = "IsO8601";
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+const result1 = instance.yearOfWeek(arg);
+assert.sameValue(result1, 1976, "Calendar is case-insensitive");
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+const result2 = instance.yearOfWeek(arg);
+assert.sameValue(result2, 1976, "Calendar is case-insensitive (nested property)");

test/built-ins/Temporal/Instant/prototype/toZonedDateTime/calendar-case-insensitive.js

@@ -9,6 +9,6 @@ features: [Temporal]
 
 const instance = new Temporal.Instant(1_000_000_000_000_000_000n);
 
-const arg = "iSo8601";;
+const arg = "iSo8601";
 const result = instance.toZonedDateTime({ calendar: arg, timeZone: "UTC" });
 assert.sameValue(result.calendar.id, "iso8601", "Calendar is case-insensitive");

test/built-ins/Temporal/PlainDate/compare/argument-propertybag-calendar-case-insensitive.js

@@ -0,0 +1,22 @@
+// Copyright (C) 2022 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-temporal.plaindate.compare
+description: The calendar name is case-insensitive
+features: [Temporal]
+---*/
+
+const calendar = "IsO8601";
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+const result1 = Temporal.PlainDate.compare(arg, new Temporal.PlainDate(1976, 11, 18));
+assert.sameValue(result1, 0, "Calendar is case-insensitive (first argument)");
+const result2 = Temporal.PlainDate.compare(new Temporal.PlainDate(1976, 11, 18), arg);
+assert.sameValue(result2, 0, "Calendar is case-insensitive (second argument)");
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+const result3 = Temporal.PlainDate.compare(arg, new Temporal.PlainDate(1976, 11, 18));
+assert.sameValue(result3, 0, "Calendar is case-insensitive (nested property, first argument)");
+const result4 = Temporal.PlainDate.compare(new Temporal.PlainDate(1976, 11, 18), arg);
+assert.sameValue(result4, 0, "Calendar is case-insensitive (nested property, second argument)");

test/built-ins/Temporal/PlainDate/from/argument-propertybag-calendar-case-insensitive.js

@@ -10,6 +10,10 @@ features: [Temporal]
 
 const calendar = "IsO8601";
 
-const arg = { year: 1976, monthCode: "M11", day: 18, calendar };
-const result = Temporal.PlainDate.from(arg);
-TemporalHelpers.assertPlainDate(result, 1976, 11, "M11", 18, `Calendar created from string "${calendar}"`);
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+const result1 = Temporal.PlainDate.from(arg);
+TemporalHelpers.assertPlainDate(result1, 1976, 11, "M11", 18, "Calendar is case-insensitive");
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+const result2 = Temporal.PlainDate.from(arg);
+TemporalHelpers.assertPlainDate(result2, 1976, 11, "M11", 18, "Calendar is case-insensitive (nested property)");

test/built-ins/Temporal/PlainDate/prototype/equals/argument-propertybag-calendar-case-insensitive.js

@@ -11,6 +11,10 @@ const instance = new Temporal.PlainDate(1976, 11, 18);
 
 const calendar = "IsO8601";
 
-const arg = { year: 1976, monthCode: "M11", day: 18, calendar };
-const result = instance.equals(arg);
-assert.sameValue(result, true, `Calendar created from string "${calendar}"`);
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+const result1 = instance.equals(arg);
+assert.sameValue(result1, true, "Calendar is case-insensitive");
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+const result2 = instance.equals(arg);
+assert.sameValue(result2, true, "Calendar is case-insensitive (nested property)");

test/built-ins/Temporal/PlainDate/prototype/since/argument-propertybag-calendar-case-insensitive.js

@@ -12,6 +12,10 @@ const instance = new Temporal.PlainDate(1976, 11, 18);
 
 const calendar = "IsO8601";
 
-const arg = { year: 1976, monthCode: "M11", day: 18, calendar };
-const result = instance.since(arg);
-TemporalHelpers.assertDuration(result, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, `Calendar created from string "${calendar}"`);
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+const result1 = instance.since(arg);
+TemporalHelpers.assertDuration(result1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, "Calendar is case-insensitive");
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+const result2 = instance.since(arg);
+TemporalHelpers.assertDuration(result2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, "Calendar is case-insensitive (nested property)");

test/built-ins/Temporal/PlainDate/prototype/until/argument-propertybag-calendar-case-insensitive.js

@@ -12,6 +12,10 @@ const instance = new Temporal.PlainDate(1976, 11, 18);
 
 const calendar = "IsO8601";
 
-const arg = { year: 1976, monthCode: "M11", day: 18, calendar };
-const result = instance.until(arg);
-TemporalHelpers.assertDuration(result, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, `Calendar created from string "${calendar}"`);
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+const result1 = instance.until(arg);
+TemporalHelpers.assertDuration(result1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, "Calendar is case-insensitive");
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+const result2 = instance.until(arg);
+TemporalHelpers.assertDuration(result2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, "Calendar is case-insensitive (nested property)");

test/built-ins/Temporal/PlainDate/prototype/withCalendar/calendar-case-insensitive.js

@@ -9,6 +9,6 @@ features: [Temporal]
 
 const instance = new Temporal.PlainDate(1976, 11, 18, { id: "replace-me" });
 
-const arg = "iSo8601";;
+const arg = "iSo8601";
 const result = instance.withCalendar(arg);
 assert.sameValue(result.calendar.id, "iso8601", "Calendar is case-insensitive");

test/built-ins/Temporal/PlainDateTime/compare/argument-propertybag-calendar-case-insensitive.js

@@ -0,0 +1,22 @@
+// Copyright (C) 2022 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-temporal.plaindatetime.compare
+description: The calendar name is case-insensitive
+features: [Temporal]
+---*/
+
+const calendar = "IsO8601";
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+const result1 = Temporal.PlainDateTime.compare(arg, new Temporal.PlainDateTime(1976, 11, 18));
+assert.sameValue(result1, 0, "Calendar is case-insensitive (first argument)");
+const result2 = Temporal.PlainDateTime.compare(new Temporal.PlainDateTime(1976, 11, 18), arg);
+assert.sameValue(result2, 0, "Calendar is case-insensitive (second argument)");
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+const result3 = Temporal.PlainDateTime.compare(arg, new Temporal.PlainDateTime(1976, 11, 18));
+assert.sameValue(result3, 0, "Calendar is case-insensitive (nested property, first argument)");
+const result4 = Temporal.PlainDateTime.compare(new Temporal.PlainDateTime(1976, 11, 18), arg);
+assert.sameValue(result4, 0, "Calendar is case-insensitive (nested property, second argument)");

test/built-ins/Temporal/PlainDateTime/from/argument-propertybag-calendar-case-insensitive.js

@@ -10,6 +10,10 @@ features: [Temporal]
 
 const calendar = "IsO8601";
 
-const arg = { year: 1976, monthCode: "M11", day: 18, calendar };
-const result = Temporal.PlainDateTime.from(arg);
-TemporalHelpers.assertPlainDateTime(result, 1976, 11, "M11", 18, 0, 0, 0, 0, 0, 0, `Calendar created from string "${calendar}"`);
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+const result1 = Temporal.PlainDateTime.from(arg);
+TemporalHelpers.assertPlainDateTime(result1, 1976, 11, "M11", 18, 0, 0, 0, 0, 0, 0, "Calendar is case-insensitive");
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+const result2 = Temporal.PlainDateTime.from(arg);
+TemporalHelpers.assertPlainDateTime(result2, 1976, 11, "M11", 18, 0, 0, 0, 0, 0, 0, "Calendar is case-insensitive (nested property)");

test/built-ins/Temporal/PlainDateTime/prototype/equals/argument-propertybag-calendar-case-insensitive.js

@@ -11,6 +11,10 @@ const instance = new Temporal.PlainDateTime(1976, 11, 18);
 
 const calendar = "IsO8601";
 
-const arg = { year: 1976, monthCode: "M11", day: 18, calendar };
-const result = instance.equals(arg);
-assert.sameValue(result, true, `Calendar created from string "${calendar}"`);
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+const result1 = instance.equals(arg);
+assert.sameValue(result1, true, "Calendar is case-insensitive");
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+const result2 = instance.equals(arg);
+assert.sameValue(result2, true, "Calendar is case-insensitive (nested property)");

test/built-ins/Temporal/PlainDateTime/prototype/since/argument-propertybag-calendar-case-insensitive.js

@@ -12,6 +12,10 @@ const instance = new Temporal.PlainDateTime(1976, 11, 18);
 
 const calendar = "IsO8601";
 
-const arg = { year: 1976, monthCode: "M11", day: 18, calendar };
-const result = instance.since(arg);
-TemporalHelpers.assertDuration(result, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, `Calendar created from string "${calendar}"`);
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+const result1 = instance.since(arg);
+TemporalHelpers.assertDuration(result1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, "Calendar is case-insensitive");
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+const result2 = instance.since(arg);
+TemporalHelpers.assertDuration(result2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, "Calendar is case-insensitive (nested property)");