Temporal: Add tests for fast path in ToTemporalCalendar

Normally, a plain object passed into an API that takes a Temporal.Calendar
has its 'calendar' property checked (observably) with a Has operation
followed by a Get operation if the property is present. In the normative
change https://github.com/tc39/proposal-temporal/pull/2392 which reached
consensus at the September 2022 TC39 meeting, this was changed so that
this check is skipped for objects which have the Temporal.Calendar
internal slots.

This adds tests to all entry points that pass a user-supplied object to
ToTemporalCalendar, with a "poisoned" calendar object which has the
correct internal slots but a 'calendar' accessor property whose getter
throws. A correct implementation should not cause this getter to throw.

test/built-ins/Temporal/Calendar/from/calendar-instance-does-not-get-calendar-property.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.from
+description: >
+  A Temporal.Calendar instance passed to from() does not have its
+  'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const arg = new Temporal.Calendar("iso8601");
+Object.defineProperty(arg, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+Temporal.Calendar.from(arg);
+Temporal.Calendar.from({ calendar: arg });

test/built-ins/Temporal/Calendar/prototype/dateAdd/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.dateadd
+description: >
+  A Temporal.Calendar instance passed to dateAdd() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.dateAdd(arg, new Temporal.Duration());
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.dateAdd(arg, new Temporal.Duration());

test/built-ins/Temporal/Calendar/prototype/dateUntil/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.calendar.prototype.dateuntil
+description: >
+  A Temporal.Calendar instance passed to dateUntil() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+const arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.dateUntil(arg, arg);

test/built-ins/Temporal/Calendar/prototype/day/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.day
+description: >
+  A Temporal.Calendar instance passed to day() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.day(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.day(arg);

test/built-ins/Temporal/Calendar/prototype/dayOfWeek/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.dayofweek
+description: >
+  A Temporal.Calendar instance passed to dayOfWeek() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.dayOfWeek(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.dayOfWeek(arg);

test/built-ins/Temporal/Calendar/prototype/dayOfYear/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.dayofyear
+description: >
+  A Temporal.Calendar instance passed to dayOfYear() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.dayOfYear(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.dayOfYear(arg);

test/built-ins/Temporal/Calendar/prototype/daysInMonth/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.daysinmonth
+description: >
+  A Temporal.Calendar instance passed to daysInMonth() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.daysInMonth(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.daysInMonth(arg);

test/built-ins/Temporal/Calendar/prototype/daysInWeek/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.daysinweek
+description: >
+  A Temporal.Calendar instance passed to daysInWeek() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.daysInWeek(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.daysInWeek(arg);

test/built-ins/Temporal/Calendar/prototype/daysInYear/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.daysinyear
+description: >
+  A Temporal.Calendar instance passed to daysInYear() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.daysInYear(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.daysInYear(arg);

test/built-ins/Temporal/Calendar/prototype/inLeapYear/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.inleapyear
+description: >
+  A Temporal.Calendar instance passed to inLeapYear() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.inLeapYear(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.inLeapYear(arg);

test/built-ins/Temporal/Calendar/prototype/month/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.month
+description: >
+  A Temporal.Calendar instance passed to month() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.month(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.month(arg);

test/built-ins/Temporal/Calendar/prototype/monthCode/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.monthcode
+description: >
+  A Temporal.Calendar instance passed to monthCode() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.monthCode(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.monthCode(arg);

test/built-ins/Temporal/Calendar/prototype/monthsInYear/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.monthsinyear
+description: >
+  A Temporal.Calendar instance passed to monthsInYear() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.monthsInYear(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.monthsInYear(arg);

test/built-ins/Temporal/Calendar/prototype/weekOfYear/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.weekofyear
+description: >
+  A Temporal.Calendar instance passed to weekOfYear() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.weekOfYear(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.weekOfYear(arg);

test/built-ins/Temporal/Calendar/prototype/year/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.year
+description: >
+  A Temporal.Calendar instance passed to year() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.year(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.year(arg);

test/built-ins/Temporal/Instant/prototype/toZonedDateTime/calendar-instance-does-not-get-calendar-property.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.instant.prototype.tozoneddatetime
+description: >
+  A Temporal.Calendar instance passed to toZonedDateTime() does not have its
+  'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Instant(1_000_000_000_000_000_000n);
+
+const arg = new Temporal.Calendar("iso8601");
+Object.defineProperty(arg, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+instance.toZonedDateTime({ calendar: arg, timeZone: "UTC" });
+instance.toZonedDateTime({ calendar: { calendar: arg }, timeZone: "UTC" });

test/built-ins/Temporal/Now/plainDate/calendar-instance-does-not-get-calendar-property.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.now.plaindate
+description: >
+  A Temporal.Calendar instance passed to plainDate() does not have its
+  'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const arg = new Temporal.Calendar("iso8601");
+Object.defineProperty(arg, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+Temporal.Now.plainDate(arg);
+Temporal.Now.plainDate({ calendar: arg });

test/built-ins/Temporal/Now/plainDateTime/calendar-instance-does-not-get-calendar-property.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.now.plaindatetime
+description: >
+  A Temporal.Calendar instance passed to plainDateTime() does not have its
+  'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const arg = new Temporal.Calendar("iso8601");
+Object.defineProperty(arg, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+Temporal.Now.plainDateTime(arg);
+Temporal.Now.plainDateTime({ calendar: arg });

test/built-ins/Temporal/Now/zonedDateTime/calendar-instance-does-not-get-calendar-property.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.now.zoneddatetime
+description: >
+  A Temporal.Calendar instance passed to zonedDateTime() does not have its
+  'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const arg = new Temporal.Calendar("iso8601");
+Object.defineProperty(arg, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+Temporal.Now.zonedDateTime(arg);
+Temporal.Now.zonedDateTime({ calendar: arg });

test/built-ins/Temporal/PlainDate/calendar-instance-does-not-get-calendar-property.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.plaindate
+description: >
+  A Temporal.Calendar instance passed to new PlainDate() does not have
+  its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const arg = new Temporal.Calendar("iso8601");
+Object.defineProperty(arg, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+new Temporal.PlainDate(2000, 5, 2, arg);
+new Temporal.PlainDate(2000, 5, 2, { calendar: arg });

test/built-ins/Temporal/PlainDate/compare/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.plaindate.compare
+description: >
+  A Temporal.Calendar instance passed to compare() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+const arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+Temporal.PlainDate.compare(arg, arg);

test/built-ins/Temporal/PlainDate/from/argument-propertybag-calendar-instance-does-not-get-calendar-property.js

@@ -0,0 +1,23 @@
+// 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.from
+description: >
+  A Temporal.Calendar instance passed to from() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+Temporal.PlainDate.from(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+Temporal.PlainDate.from(arg);

test/built-ins/Temporal/PlainDate/prototype/equals/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.plaindate.prototype.equals
+description: >
+  A Temporal.Calendar instance passed to equals() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainDate(1976, 11, 18);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.equals(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.equals(arg);

test/built-ins/Temporal/PlainDate/prototype/since/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.plaindate.prototype.since
+description: >
+  A Temporal.Calendar instance passed to since() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainDate(1976, 11, 18);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.since(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.since(arg);

test/built-ins/Temporal/PlainDate/prototype/until/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.plaindate.prototype.until
+description: >
+  A Temporal.Calendar instance passed to until() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainDate(1976, 11, 18);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.until(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.until(arg);

test/built-ins/Temporal/PlainDate/prototype/withCalendar/calendar-instance-does-not-get-calendar-property.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.prototype.withcalendar
+description: >
+  A Temporal.Calendar instance passed to withCalendar() does not have its
+  'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainDate(1976, 11, 18, { id: "replace-me" });
+
+const arg = new Temporal.Calendar("iso8601");
+Object.defineProperty(arg, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+instance.withCalendar(arg);
+instance.withCalendar({ calendar: arg });

test/built-ins/Temporal/PlainDateTime/calendar-instance-does-not-get-calendar-property.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.plaindatetime
+description: >
+  A Temporal.Calendar instance passed to new PlainDateTime() does not have
+  its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const arg = new Temporal.Calendar("iso8601");
+Object.defineProperty(arg, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+new Temporal.PlainDateTime(2000, 5, 2, 15, 23, 30, 987, 654, 321, arg);
+new Temporal.PlainDateTime(2000, 5, 2, 15, 23, 30, 987, 654, 321, { calendar: arg });

test/built-ins/Temporal/PlainDateTime/compare/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.plaindatetime.compare
+description: >
+  A Temporal.Calendar instance passed to compare() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+const arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+Temporal.PlainDateTime.compare(arg, arg);

test/built-ins/Temporal/PlainDateTime/from/argument-propertybag-calendar-instance-does-not-get-calendar-property.js

@@ -0,0 +1,23 @@
+// 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.from
+description: >
+  A Temporal.Calendar instance passed to from() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+Temporal.PlainDateTime.from(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+Temporal.PlainDateTime.from(arg);

test/built-ins/Temporal/PlainDateTime/prototype/equals/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.plaindatetime.prototype.equals
+description: >
+  A Temporal.Calendar instance passed to equals() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainDateTime(1976, 11, 18);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.equals(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.equals(arg);

test/built-ins/Temporal/PlainDateTime/prototype/since/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.plaindatetime.prototype.since
+description: >
+  A Temporal.Calendar instance passed to since() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainDateTime(1976, 11, 18);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.since(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.since(arg);

test/built-ins/Temporal/PlainDateTime/prototype/until/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.plaindatetime.prototype.until
+description: >
+  A Temporal.Calendar instance passed to until() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainDateTime(1976, 11, 18);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.until(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.until(arg);

test/built-ins/Temporal/PlainDateTime/prototype/withCalendar/calendar-instance-does-not-get-calendar-property.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.prototype.withcalendar
+description: >
+  A Temporal.Calendar instance passed to withCalendar() does not have its
+  'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainDateTime(1976, 11, 18, 15, 23, 30, 123, 456, 789, { id: "replace-me" });
+
+const arg = new Temporal.Calendar("iso8601");
+Object.defineProperty(arg, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+instance.withCalendar(arg);
+instance.withCalendar({ calendar: arg });

test/built-ins/Temporal/PlainDateTime/prototype/withPlainDate/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.plaindatetime.prototype.withplaindate
+description: >
+  A Temporal.Calendar instance passed to withPlainDate() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainDateTime(2000, 5, 2, 12, 34, 56, 987, 654, 321);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.withPlainDate(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.withPlainDate(arg);

test/built-ins/Temporal/PlainMonthDay/calendar-instance-does-not-get-calendar-property.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.plainmonthday
+description: >
+  A Temporal.Calendar instance passed to new PlainMonthDay() does not have
+  its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const arg = new Temporal.Calendar("iso8601");
+Object.defineProperty(arg, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+new Temporal.PlainMonthDay(12, 15, arg, 1972);
+new Temporal.PlainMonthDay(12, 15, { calendar: arg }, 1972);

test/built-ins/Temporal/PlainMonthDay/from/argument-propertybag-calendar-instance-does-not-get-calendar-property.js

@@ -0,0 +1,23 @@
+// 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.plainmonthday.from
+description: >
+  A Temporal.Calendar instance passed to from() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { monthCode: "M11", day: 18, calendar };
+Temporal.PlainMonthDay.from(arg);
+
+arg = { monthCode: "M11", day: 18, calendar: { calendar } };
+Temporal.PlainMonthDay.from(arg);

test/built-ins/Temporal/PlainMonthDay/prototype/equals/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.plainmonthday.prototype.equals
+description: >
+  A Temporal.Calendar instance passed to equals() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainMonthDay(11, 18);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { monthCode: "M11", day: 18, calendar };
+instance.equals(arg);
+
+arg = { monthCode: "M11", day: 18, calendar: { calendar } };
+instance.equals(arg);

test/built-ins/Temporal/PlainTime/prototype/toPlainDateTime/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.plaintime.prototype.toplaindatetime
+description: >
+  A Temporal.Calendar instance passed to toPlainDateTime() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainTime(12, 34, 56, 987, 654, 321);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.toPlainDateTime(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.toPlainDateTime(arg);

test/built-ins/Temporal/PlainTime/prototype/toZonedDateTime/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.plaintime.prototype.tozoneddatetime
+description: >
+  A Temporal.Calendar instance passed to toZonedDateTime() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainTime(12, 34, 56, 987, 654, 321);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.toZonedDateTime({ plainDate: arg, timeZone: "UTC" });
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.toZonedDateTime({ plainDate: arg, timeZone: "UTC" });

test/built-ins/Temporal/PlainYearMonth/calendar-instance-does-not-get-calendar-property.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.plainyearmonth
+description: >
+  A Temporal.Calendar instance passed to new PlainYearMonth() does not have
+  its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const arg = new Temporal.Calendar("iso8601");
+Object.defineProperty(arg, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+new Temporal.PlainYearMonth(2000, 5, arg, 1);
+new Temporal.PlainYearMonth(2000, 5, { calendar: arg }, 1);

test/built-ins/Temporal/PlainYearMonth/compare/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.plainyearmonth.compare
+description: >
+  A Temporal.Calendar instance passed to compare() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+const arg = { year: 2019, monthCode: "M06", calendar };
+Temporal.PlainYearMonth.compare(arg, arg);

test/built-ins/Temporal/PlainYearMonth/from/argument-propertybag-calendar-instance-does-not-get-calendar-property.js

@@ -0,0 +1,23 @@
+// 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.plainyearmonth.from
+description: >
+  A Temporal.Calendar instance passed to from() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 2019, monthCode: "M06", calendar };
+Temporal.PlainYearMonth.from(arg);
+
+arg = { year: 2019, monthCode: "M06", calendar: { calendar } };
+Temporal.PlainYearMonth.from(arg);

test/built-ins/Temporal/PlainYearMonth/prototype/equals/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.plainyearmonth.prototype.equals
+description: >
+  A Temporal.Calendar instance passed to equals() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainYearMonth(2019, 6);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 2019, monthCode: "M06", calendar };
+instance.equals(arg);
+
+arg = { year: 2019, monthCode: "M06", calendar: { calendar } };
+instance.equals(arg);

test/built-ins/Temporal/PlainYearMonth/prototype/since/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.plainyearmonth.prototype.since
+description: >
+  A Temporal.Calendar instance passed to since() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainYearMonth(2019, 6);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 2019, monthCode: "M06", calendar };
+instance.since(arg);
+
+arg = { year: 2019, monthCode: "M06", calendar: { calendar } };
+instance.since(arg);

test/built-ins/Temporal/PlainYearMonth/prototype/until/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.plainyearmonth.prototype.until
+description: >
+  A Temporal.Calendar instance passed to until() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainYearMonth(2019, 6);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 2019, monthCode: "M06", calendar };
+instance.until(arg);
+
+arg = { year: 2019, monthCode: "M06", calendar: { calendar } };
+instance.until(arg);

test/built-ins/Temporal/TimeZone/prototype/getInstantFor/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.timezone.prototype.getinstantfor
+description: >
+  A Temporal.Calendar instance passed to getInstantFor() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.TimeZone("UTC");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.getInstantFor(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.getInstantFor(arg);

test/built-ins/Temporal/TimeZone/prototype/getPlainDateTimeFor/calendar-instance-does-not-get-calendar-property.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.timezone.prototype.getplaindatetimefor
+description: >
+  A Temporal.Calendar instance passed to getPlainDateTimeFor() does not have its
+  'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.TimeZone("UTC");
+
+const arg = new Temporal.Calendar("iso8601");
+Object.defineProperty(arg, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+instance.getPlainDateTimeFor(new Temporal.Instant(0n), arg);
+instance.getPlainDateTimeFor(new Temporal.Instant(0n), { calendar: arg });

test/built-ins/Temporal/TimeZone/prototype/getPossibleInstantsFor/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.timezone.prototype.getpossibleinstantsfor
+description: >
+  A Temporal.Calendar instance passed to getPossibleInstantsFor() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.TimeZone("UTC");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.getPossibleInstantsFor(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.getPossibleInstantsFor(arg);

test/built-ins/Temporal/ZonedDateTime/calendar-instance-does-not-get-calendar-property.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.zoneddatetime
+description: >
+  A Temporal.Calendar instance passed to new ZonedDateTime() does not have
+  its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const arg = new Temporal.Calendar("iso8601");
+Object.defineProperty(arg, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+new Temporal.ZonedDateTime(0n, "UTC", arg);
+new Temporal.ZonedDateTime(0n, "UTC", { calendar: arg });

test/built-ins/Temporal/ZonedDateTime/compare/argument-propertybag-calendar-instance-does-not-get-calendar-property.js

@@ -0,0 +1,21 @@
+// 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.zoneddatetime.compare
+description: >
+  A Temporal.Calendar instance passed to compare() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+const timeZone = new Temporal.TimeZone("UTC");
+const arg = { year: 1970, monthCode: "M01", day: 1, timeZone, calendar };
+Temporal.ZonedDateTime.compare(arg, arg);

test/built-ins/Temporal/ZonedDateTime/from/argument-propertybag-calendar-instance-does-not-get-calendar-property.js

@@ -0,0 +1,24 @@
+// 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.zoneddatetime.from
+description: >
+  A Temporal.Calendar instance passed to from() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+const timeZone = new Temporal.TimeZone("UTC");
+let arg = { year: 1970, monthCode: "M01", day: 1, timeZone, calendar };
+Temporal.ZonedDateTime.from(arg);
+
+arg = { year: 1970, monthCode: "M01", day: 1, timeZone, calendar: { calendar } };
+Temporal.ZonedDateTime.from(arg);

test/built-ins/Temporal/ZonedDateTime/prototype/equals/argument-propertybag-calendar-instance-does-not-get-calendar-property.js

@@ -0,0 +1,26 @@
+// 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.zoneddatetime.prototype.equals
+description: >
+  A Temporal.Calendar instance passed to equals() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const timeZone = new Temporal.TimeZone("UTC");
+const instance = new Temporal.ZonedDateTime(0n, timeZone);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1970, monthCode: "M01", day: 1, timeZone, calendar };
+instance.equals(arg);
+
+arg = { year: 1970, monthCode: "M01", day: 1, timeZone, calendar: { calendar } };
+instance.equals(arg);

test/built-ins/Temporal/ZonedDateTime/prototype/since/argument-propertybag-calendar-instance-does-not-get-calendar-property.js

@@ -0,0 +1,26 @@
+// 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.zoneddatetime.prototype.since
+description: >
+  A Temporal.Calendar instance passed to since() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const timeZone = new Temporal.TimeZone("UTC");
+const instance = new Temporal.ZonedDateTime(0n, timeZone);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1970, monthCode: "M01", day: 1, timeZone, calendar };
+instance.since(arg);
+
+arg = { year: 1970, monthCode: "M01", day: 1, timeZone, calendar: { calendar } };
+instance.since(arg);

test/built-ins/Temporal/ZonedDateTime/prototype/until/argument-propertybag-calendar-instance-does-not-get-calendar-property.js

@@ -0,0 +1,26 @@
+// 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.zoneddatetime.prototype.until
+description: >
+  A Temporal.Calendar instance passed to until() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const timeZone = new Temporal.TimeZone("UTC");
+const instance = new Temporal.ZonedDateTime(0n, timeZone);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1970, monthCode: "M01", day: 1, timeZone, calendar };
+instance.until(arg);
+
+arg = { year: 1970, monthCode: "M01", day: 1, timeZone, calendar: { calendar } };
+instance.until(arg);

test/built-ins/Temporal/ZonedDateTime/prototype/withCalendar/calendar-instance-does-not-get-calendar-property.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.zoneddatetime.prototype.withcalendar
+description: >
+  A Temporal.Calendar instance passed to withCalendar() does not have its
+  'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.ZonedDateTime(1_000_000_000_000_000_000n, "UTC", { id: "replace-me" });
+
+const arg = new Temporal.Calendar("iso8601");
+Object.defineProperty(arg, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+instance.withCalendar(arg);
+instance.withCalendar({ calendar: arg });

test/built-ins/Temporal/ZonedDateTime/prototype/withPlainDate/argument-propertybag-calendar-instance-does-not-get-calendar-property.js

@@ -0,0 +1,26 @@
+// 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.zoneddatetime.prototype.withplaindate
+description: >
+  A Temporal.Calendar instance passed to withPlainDate() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const timeZone = new Temporal.TimeZone("UTC");
+const instance = new Temporal.ZonedDateTime(1_000_000_000_000_000_000n, timeZone);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.withPlainDate(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.withPlainDate(arg);

test/intl402/Temporal/Calendar/prototype/era/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.era
+description: >
+  A Temporal.Calendar instance passed to era() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.era(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.era(arg);

test/intl402/Temporal/Calendar/prototype/eraYear/argument-propertybag-calendar-instance-does-not-get-calendar-property.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.erayear
+description: >
+  A Temporal.Calendar instance passed to eraYear() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.eraYear(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.eraYear(arg);